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Sample records for reservoirs shengli oilfield

  1. Reservoir Characteristics and Guidance for Exploration in the Beach Area of Shengli Oilfields

    Institute of Scientific and Technical Information of China (English)

    Yang Xinmin

    1994-01-01

    @@ The beach area of Shengli Oilfield lies in the east and north of Zhanhua sag which is located in the southern end of Bohai Bay Basin (Fig.1). Its geological situation is generally similar to that in Zhanhua sag.Several decades of exploration shows that this area is the most enriched petroleum area in Bohai Bay Basin. Oil and gas distributed there in a same way as in Bohai Bay Basin, but also distributed in its own unique way.

  2. Geological Scientific Research Institute of Shengli Oilfield

    Institute of Scientific and Technical Information of China (English)

    1995-01-01

    @@ Geological Scientific Research Institute of Shengli Oilfield is a scientific and technological research organization for exploration and development of oil/gas fields in Shengli oil province. The main work of the institute involves program for exploration and development, medium/long term planning,program for productivity construction in the new areas, program for adjustment of the old oilfields and undertaking key task of scientific research assigned by CNPC and Shengli Petroleum Administrative Bureau.

  3. Petroleum Engineering Technology of Shengli Oilfield

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ Shengli Oilfield (hereafter referred to as Shengli), a subordinate company of China Petrochemical Corporation (Sinopec), is the second largest oil field in China and an important oil industry base in east China. It lies in the Yellow River Delta, bordering the Bohai Bay.It plays an enormous role in the economic circle around Bohai Bay and the economic belt of Yellow River area for its well developed infrastructure, transportation and communication system, and favorable geographical location.

  4. Speciality of Coring Technology in Shengli Oilfield

    Institute of Scientific and Technical Information of China (English)

    Sun Baowei; Li Kairong

    1994-01-01

    @@ Shengli Oilfield is a large complicated oil-gas province which is complex in geological structure and unusual in lithological change. Rich oil and gas resources exist in Cenozoic to Palaeozoic, from very unconsolidated sandstone to very hard granite gneiss and from fractured mudstone to crushed limestone.

  5. New Star in Yellow River Delta --Daming Group Co.,Ltd,Shengli Oilfield

    Institute of Scientific and Technical Information of China (English)

    Guo Shuren

    1994-01-01

    @@ Daming Group Co.,Ltd.,Shengli Oilfield is a high set-off,pluralized and multioriented limited-liability company which was initiated and established by four units of Shengli Petroleum Administration,CNPC,Dongsheng Petroleum Development Co.,Ltd.,Shengli Oilfield,Zhongyuan Company of Dongying Branch,Bank of China,and Shengli Oilfield Labour Service Company,It is the first share-system enterprise in China's petroleum industry.Its total capital is 120 million yuan (RMB).The Shengli Petroleum Administration,CNPC is the biggest shareholder occupying more than 20% of the total capital.

  6. Crosslinked Polymer Injection Showing Notable Effectiveness in Shengli Oilfields

    Institute of Scientific and Technical Information of China (English)

    Zhao Shouzeng

    1994-01-01

    @@ After more than half a year of crosslinked polymer inection test, oil production increased notably in western district No.7 of Gudong Oil Production Plant, Shengli Oilfields. In the test area, through the test daily fluid production increased from 397.9 tons to 434.6 tons and daily oil production increased from 79.6 to 101.3 tons, but comprehensive water cut dropped from 80.6% to 79.6%.

  7. Subtle trap recognition based on seismic sedimentology-A case study from Shengli Oilfield

    Institute of Scientific and Technical Information of China (English)

    Huang Handong; Zhang Ruwei; Luo Qun; Zhao Di; Peng Yongmin

    2009-01-01

    Seismic sedimentology is the study of sedimentary rocks and facies using seismic data. However, often the sedimentary body features can't be described quantitatively due to the limit of seismic resolution. High resolution inversion offsets this limitation and is applied to seismic sedimentology to identify subtle traps under complex geologic conditions, thereby widening the applicable range of seismic sedimentology. In this paper, based on seismic sedimentology, seismic phase-controlled nonlinear random inversion is used to predict the sandy conglomerate reservoir of Es3 in the Chezhen depression in Shengli Oilfield. Thickness and sedimentary microfacies maps of sandy conglomerate bodies in several stages are presented and several subtle traps were predicted and verified by drilling.

  8. WASTE WATER TREATMENT IN VISCOUS CRUDE PROCESSING IN SHENGLI OILFIELDS

    Institute of Scientific and Technical Information of China (English)

    Yang Huaijie; Xu Hui

    1997-01-01

    @@ Apart from sewage pretreatment and stepped control, the Viscous Crude Processing Plant of Shengli Petrochemical General Works has established a new process of sewage treatment featuring with flexible and advanced technology and strong impact strength, with the crude sewage treatment yield reaching more than 95%.

  9. Development of Low Permeability Oilfields in Shengli Oil Province

    Institute of Scientific and Technical Information of China (English)

    Wang Binhai; Fan Naifu

    1995-01-01

    @@ Shengli oil province,complicated in geology and rich in resources, is the second largest oil production basin of China. Except for some big/medium sized oil/gas field with high and medium permeability which have already been put into production. There are 11oil fields at great depth with low permeability of less than 50 ×10-3 μm2 have been discovered with 12. 2% of the total proved original oil in place.

  10. Developing Sand-Gravel Viscous Oil Reservoir in Le'an Oilfield

    Institute of Scientific and Technical Information of China (English)

    He Shenghou

    1995-01-01

    @@ The main oil-bearing series of Le'an Oilfield, Shengli Oil Province, which was discovered in 1970s are sand-gravel bodies on the base of the Eocene Guantao Formation. It is difficult to produce crude oil with conventional method from this thin reservoir due to its complicated lithology, extra viscous oil and edge water. We have conducted integrated study on geology, reservoir engineering, thermal production technology, horizontal drilling technology and comprehensive study. By five years' field experiment and operation, a prominent effect of development and good economic benefit have been achieved and an example has been set up for thermal recovery from extra viscous reservoir.

  11. Distribution characteristics of terrestrial heat flow density in Jiyang depression of Shengli Oilfield, East China

    Institute of Scientific and Technical Information of China (English)

    GONG Yuling; WANG Liangshu; LIU Shaowen; LI Cheng; HAN Yongbing; LI Hua; LIU Bo; CAI Jingong

    2004-01-01

    Based on the geo-temperature data of 13 systematically continuous temperature log curves and 700 testing oil boreholes in Jiyang depression, Shengli Oilfield, and the measured thermal conductivities of 47 rock samples, the terrestrial heat flow densities of 114 boreholes of Jiyang depression and its surrounding areas are determined, including 13 of those data derived from systemically continuous temperature logging. The results show that Jiyang depression has a relatively high background heat flow with an average value (65.8 ± 5.4) mW/m2. The lateral variation of heat flow in basin has negative correlation with basement depth. Moreover, heat flow of uplift areas with shallower basement is high, so are those of regions with volcanic rocks, and those of depression areas with deep basement are relatively low. The heat flow densities of different structural units of Jiyang depression can be summarized as follows: The average heat flow value of Zhanhua sag is (67.4 ± 5.3) mW/m2, higher than that of the whole basin, that of Dongying sag is (66.0 ± 6.1) mW/m2, and that of Chezhen sag is (65.1 ± 3.7) mW/m2. It is apparent that these latter two values are approximate to the average value of the whole Jiyang depression,while the average value of Huimin sag is (63.6±5.0) mW/m2, lower than that of the whole basin. In fact, the basement depth and the distribution framework of uplift and depression areas are all controlled by the process of lithosphere extension. In addition, the distribution of volcanic rocks in basin is also relatively close to this extension geodynamic process. In summary, the distribution characteristics of terrestrial heat flow of Jiyang depression is determined by the Cenozoic tectono-thermal events of this region.

  12. 胜利油田超稠油蒸汽驱汽窜控制技术%Steam channeling control in the steam flooding of super heavy oil reservoirs, Shengli Oilfield

    Institute of Scientific and Technical Information of China (English)

    曹嫣镔; 刘冬青; 张仲平; 王善堂; 王全; 夏道宏

    2012-01-01

    In view of the severe steam channeling in the steam flooding of super heavy reservoir, lab experiment on steam channeling control were carried out. The combination of nitrogen foam and thermoset blocking agent was tested to seal steam channeling, in which thermoset blocking agent plugs big pore throats, while nitrogen foam adjusts steam absorption profile. The optimized foam formulation has a resistance factor of over 30 at 300 ℃, can plug low oil saturation areas selectively, and applies to the plugging of high permeability zones in super-heavy oil reservoirs. Thermoset blocking agent, which would consolidate at 120℃ in 4 h and consolidate at 150℃ in 2 h, can provide effective plugging during dynamic steam flooding. The best steam channeling control mode was determined using parallel tube model. By the combination of nitrogen foam and thermoset blocking agent, the recovery rate is 5.7% higher than the application of nitrogen foam only, with the overall sweeping efficiency reaching up to 60.8%. In 2011, the mode was used in the steam flooding in Shan-56 reservoir. The water cut drops 10.2%, the wellhead temperature of producer drops more than 15℃, the oil production of the well group increases over 28 tons per day, the valid period of a single cycle is up to 198 days, and the oil production increases 2 562 t, showing significant improvement in steam flooding.%针对超稠油油藏蒸汽驱过程中汽窜严重的问题,开展室内蒸汽驱汽窜控制技术研究,将氮气泡沫与热固性堵剂相结合封堵汽窜,热固性堵剂封堵大孔道,氮气泡沫调整蒸汽的吸汽剖面.优化后的泡沫剂体系300℃阻力因子达到30以上,且对低含油饱和度区域具有选择性封堵作用,适用于超稠油油藏条件下高渗透带的封堵;热固性堵剂在静态120℃可4h形成固结,150℃可2h有效固结,在蒸汽动态驱替过程中可形成有效封堵.利用双岩心管开展堵调工艺评价研究,结果表明,采用热固

  13. 有机盐强抑制可降解钻(完)井液在胜利油田的应用%Application of Degradable Organic Salt Drilling Fluid with Strong Inhibition and Completion Fluid in Shengli Oilfield

    Institute of Scientific and Technical Information of China (English)

    贺伦俊

    2012-01-01

    Shengli oilfield is rich in oil reserves of low permeability reservoirs, and developed mainly by horizontal drilling process at pres- ent with conventional drilling fluid. But the reservoir damages are often found by the drilling fluid for drawdown of production in the oil and gas wells. So it is necessary to optimiZe the drilling fluid system. In this paper, the degradable organic salt drilling fluid with strong inhibi- tion and completion fluid is studied and applied to many blocks in Shengli oilfield, and good effects have been obtained. The case study in- dicates that such drilling and completion fluids are good at protection of the low permeability reservoir, obvious increase of oil and gas pro- duction and improvement of exploration and development benefits in this oilfield.%胜利油田低渗油藏储量丰富,目前多采用水平井开发方式,但常规钻井液往往会对储集层造成伤害,降低油气井产量。因此,有必要选择一种适合的钻井液体系。对有机盐强抑制可降解钻、完井液技术进行了筛选,并在胜利油田多个区块进行了现场应用,取得了较为理想的效果,有机盐强抑制可降解钻、完井液体系对胜利油田低渗储集层有较好的保护作用,能显著提高油气产量,提高勘探开发效益。

  14. Reservoir Screening Criteria for Heavy Oil Thermal Recovery in Liaohe Oilfield

    Institute of Scientific and Technical Information of China (English)

    Lin Yuqiu; Zhang Yali

    2009-01-01

    @@ Characteristics of heavy oil reservoirsin Liaohe Oilfield Liaohe Oilfield is rich in heavy oil and is the largest base of heavy oil recovery in China. Its heavy oil reservoirs have following characteristics:

  15. [Petroleum pollution and the microbial community structure in the soil of Shengli Oilfield].

    Science.gov (United States)

    Liu, Jian; Song, Xue-Ying; Sun, Rui-Lian; Xie, Fu-Ju; Wang, Ren-Qing; Wang, Wen-Xing

    2014-03-01

    Soils around a new oil well (2011- ) and an old oil well (1966-2003) were sampled to investigate the characteristics of petroleum pollution in the oilfield. The structure of soil microbial community was analyzed by PCR-DGGE and clone sequencing techniques. Results showed that the soils around the two oil wells were generally contaminated with petroleum, and the concentrations of total petroleum hydrocarbons mostly exceeded the threshold of the environmental quality standards of soil (500 mg x kg(-1)). The total petroleum hydrocarbons concentration of the polluted soil was significantly positively correlated with the contents of organic carbon, total nitrogen and available potassium, respectively. The microbial diversity index in the soil around the old oil well decreased with the increasing total petroleum hydrocarbons concentration, however, it was reversed for the soil around the new oil well. Sequence analysis of the prominent bands in DGGE profiles showed that some dominant species existed in the petroleum-contaminated soils around the oil wells and mostly were oil-associated and hydrocarbon degrading bacteria, including Microbacterium, Streptomyces, Dietzia, Flavobacterium, alpha-Proteobacteria, and gamma-Proteobacteria.

  16. Shengli Diamond Bits

    Institute of Scientific and Technical Information of China (English)

    Yang Yukun; Han Tao

    1995-01-01

    @@ The geologic condition of Shengli Oilfield (SLOF)is complicated and the range of the rock drillability is wide. For more than 20 years,Shengli Drilling Technology Research Institute, in view of the formation conditions of SLOF,has done a lot of effort and obtained many achivements in design,manufacturing technology and field service. Up to now ,the institute has developed several ten kinds of diamond bits applicable for drilling and coring in formations from extremely soft to hard.

  17. 胜利油田驻疆新春采油厂管理创新研究%A Study on Management Innovation in Xinchun Oil Recovery Plant of Shengli Oilfield in Xinjiang

    Institute of Scientific and Technical Information of China (English)

    王学忠

    2015-01-01

    随着经济体制的改革和市场环境的变化,胜利油田新春采油厂所面临的竞争日趋激烈。针对石油行业环境的新变化,特别是为了应对低油价、低劳动生产率,新春采油厂迫切需要构建一个科学的管理体系。该厂承担胜利油田新疆油区勘探开发任务,以薄浅层超稠油、深层低渗透、火山岩裂缝等低品位油藏为主,在低油价常态下采取了一系列管理创新:首先,在借鉴先进油公司模式基础上,立足于自身实际,进行管理体制的创新,采取扁平化管理、制度化管控、“四化”建设;建立以专业化外包,项目化用工、共驻共建为特色的共驻甲乙方合作机制;其次,促进企业文化建设,坚持党组织在企业的核心地位,打造业务一流的队伍。最后,注重核心技术的研发,首创了薄浅层超稠油水平井、降黏剂、氮气、蒸汽吞吐开发技术,使搁置多年未能经济开发的低品位储量实现了高效开发,吨油成本在胜利油田同类型油藏中最低。%With the reform of economic system and changes in market environment,Xinchun Oil Recovery Plant of Shengli Oilfield is faced with increasingly fierce competition. It is urgent for Xinchun Oil Recovery Plant to set up a scientific man-agement system. The plant undertakes the exploration task of Shengli Oilfield in Xinjiang which mainly involves low-grade reservoirs like extra-heavy oil in shallow layer,deep-seated low permeable reservoirs and crack-type volcanic reservoirs. To cope with low oil price and low working efficiency,the plant has carried out a series of management innovations. Firstly, based on the advanced management experiences from other oil companies,they implement flat management and institutional-ized management. Secondly,they build a new contracting mechanism including outsourcing and project-based hiring. Thirdly, they promote the construction of company culture,aiming to

  18. A preliminary evaluation model for reservoir hydrocarbon-generating potential established based on dissolved hydrocarbons in oilfield water

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    A large number of oilfield water samples were analyzed in this work. Research on the relationship between the concentrations and distribution of dissolved hydrocarbons sug gested that the contents and composition of dissolved hydrocarbons varied with the hydrocar bon-generating potential of reservoirs. The concentrations of dissolved hydrocarbons were low in dry layers, water layers and gas-water layers, but high in gas reservoirs and oil reservoirs, especially in gas reservoirs with condensed oil. Series of carbon-number alkanes were usually absent in oilfield water from dry layers, water layers and gas-water layers but abundant in oil field water from oil-water reservoirs, gas reservoirs and oil reservoirs, whose carbon numbers varied most widely in oil reservoirs and least in gas reservoirs. A preliminary evaluation model for reservoir hydrocarbon-generating potential was established based on the characteristics of dissolved hydrocarbons in oilfield water to assist hydrocarbon exploration.

  19. Study on fine geological modelling of the fluvial sandstone reservoir in Daqing oilfield

    Energy Technology Data Exchange (ETDEWEB)

    Zhoa Han-Qing [Daqing Research Institute, Helongjiang (China)

    1997-08-01

    These paper aims at developing a method for fine reservoir description in maturing oilfields by using close spaced well logging data. The main productive reservoirs in Daqing oilfield is a set of large fluvial-deltaic deposits in the Songliao Lake Basin, characterized by multi-layers and serious heterogeneities. Various fluvial channel sandstone reservoirs cover a fairly important proportion of reserves. After a long period of water flooding, most of them have turned into high water cut layers, but there are considerable residual reserves within them, which are difficult to find and tap. Making fine reservoir description and developing sound a geological model is essential for tapping residual oil and enhancing oil recovery. The principal reason for relative lower precision of predicting model developed by using geostatistics is incomplete recognition of complex distribution of fluvial reservoirs and their internal architecture`s. Tasking advantage of limited outcrop data from other regions (suppose no outcrop data available in oilfield) can only provide the knowledge of subtle changing of reservoir parameters and internal architecture. For the specific geometry distribution and internal architecture of subsurface reservoirs (such as in produced regions) can be gained only from continuous infilling logging well data available from studied areas. For developing a geological model, we think the first important thing is to characterize sandbodies geometries and their general architecture`s, which are the framework of models, and then the slight changing of interwell parameters and internal architecture`s, which are the contents and cells of the model. An excellent model should possess both of them, but the geometry is the key to model, because it controls the contents and cells distribution within a model.

  20. How to Strengthen the Construction of HSE Team in Shengli Oilfield%胜利油田 HSE 队伍建设现状与发展思路

    Institute of Scientific and Technical Information of China (English)

    王晖

    2015-01-01

    Comprehensively deepening the reform and managing enterprises in accordance with the law and domestic oil companies'new normal have brought new more serious challenges to Shengli Oilfield ,and also put forward higher requirements for corporate HSE work .In this situation ,the existing problems in the construction of Shengli Oilfield HSE team must be ad-dressed ,such as personnel structure ,work style ,competency ,business capability ,business communication ,and HSE manage-ment .Therefore ,we should strength the construction of HSE team by considering the reality of Shengli Oilfield in terms of strengthening education and training ,establishing HSE institute of technology and highlighting the HSE management system , deepening "I can ensure safety"activities ,conducting HSE knowledge and experience sharing activities ,providing safety techni-cal support for the HSE management personnel and strengthening information management aspects .%全面深化改革、依法治企以及国内石油企业新常态给胜利油田带来新的更加严峻的挑战 ,也对企业 HSE工作提出了更高的要求.在这一形势下 ,胜利油田 HSE队伍建设中存在的队伍建设、人才结构、工作方式、业务能力、业务交流和HSE管理水平等方面的问题就必须解决 ,为此 ,应结合胜利油田实际 ,在强化教育培训、组建 HSE技术研究院、突出 HSE管理体系、深化"我能安全"活动、开展HSE知识和经验分享活动、为HSE管理人员提供安全技术支持、强化信息化管理等方面入手 ,强化HSE队伍建设.

  1. Geological Model of Member 3 of Shahejie Formation Reservoir in Liuzan Oilfield, Eastern Hebei Province

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    A new geological model of Member 3 of Shahejie Formation reservoir in the Liuzan Oilfield, eastern Hebei Province was constructed by using modern reservoir modeling technology as sequence stratigraphy and conditional simulation combined with traditional geological analysis. The model consists of a stratigraphic framework model, a structural model, a sedimentary model and a reservoir model. The study shows that the reservoir is a relatively integrated nose structure, whose strata can be divided into 4 sets of parasequence, 12 parasequences. The submerged branched channel of fan delta front is the favorable microfacies, which controls the geometric shape and physical properties of reservoir sandstone. Oil is distributed in premium reservoir sandstones at structural high positions. According to the new geological model, not only the geological contradictions appearing during oil field development are resolved, but also the oil-bearing area is enlarged by 2.7km2 and geological reserves increased by 156.9 million tons. The production capacity of the Liuzan Oilfield is increased by 0.27 million tons per year.

  2. 对如何做好胜利油田职业指导工作的几点思考%Several Thoughts about Vocational Guidance Work in Shengli Oilfield

    Institute of Scientific and Technical Information of China (English)

    许刚

    2014-01-01

    Vocational guidance ,also called career counseling or career guidance ,which is an important content of employ-ment service ,plays a more and more important role in promoting employment and realizing reasonable match of human resource and related jobs .Along with the width and depth of vocational guidance development ,systemized ,specialized and scientific vo-cational guidance is becoming the development direction of employment service ,accordingly the requirement for the career guid-ance personnel are much more higher .The paper analyzes the current situation of the vocational guidance work of Shengli Oil-field and gives some related ideas and suggestions ,which might promote the whole service level of vocational guidance work of Shengli Oilfield .%“职业指导”也称职业咨询或就业指导,职业指导作为就业服务工作的一项重要内容,在促进就业以及实现人职合理匹配等方面发挥着越来越重要的作用,同时随着职业指导在深度与广度上的不断延伸,系统化、专业化、科学化的职业指导逐步成为就业服务工作的发展方向,也给职业指导人员提出了新的更高的要求。本文通过分析胜利胜利油田职业指导工作的现状,就提升胜利油田职业指导工作水平提出了一些意见及建议,以促进胜利油田职业指导队伍整体职业素质的提升。

  3. HSE 全员培训模式探讨——以胜利油田为例%Research on HSE Training Method on Staff Taking Shengli Oilfield As An Example

    Institute of Scientific and Technical Information of China (English)

    刘圆

    2015-01-01

    The New Production Safety Law requires the production and business units to provide safety training for their employees ,so that they can go to their post after qualified training assessment .With increasingly strict requirements for pro-duction safety by the government ,Shengli Oilfield has also strengthened the safety management ,and expanded the HSE training program to all staff .Currently the HSE training on staff mainly adopts the patterns of classroom teaching ,scene simulation training ,internet -based training ,etc .It has produced a favorable training effect in Shengli Oilfield by selecting one or more training types while combining the HSE training program with the training objects'facts .%新安全生产法要求生产经营单位需对其从业人员进行安全教育培训 ,培训合格后方可上岗作业.随着国家对安全生产管理要求的逐步严格 ,胜利油田对安全生产工作加强了管理 ,并把 HSE培训项目扩展到全员范畴.目前 ,HSE全员培训主要采取课堂式培训模式、现场模拟培训模式和基于互联网的培训模式.胜利油田 HSE全员培训项目结合培训对象的实际情况 ,选用一种或多种培训模式开展培训 ,取得了良好的培训效果.

  4. Characteristics of remaining oil viscosity in water-and polymer-flooding reservoirs in Daqing Oilfield

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The experimental analysis of 21 crude oil samples shows a good correlation between high molecular-weight hydrocarbon components (C 40+) and viscosity.Forty-four remaining oil samples extracted from oil sands of oilfield development coring wells were analyzed by high-temperature gas chromatography (HTGC),for the relative abundance of C 21-,C 21-C 40 and C 40+ hydrocarbons.The relationship between viscosity of crude oil and C 40+ (%) hydrocarbons abundance is used to expect the viscosity of remaining oil.The mobility characteristics of remaining oil,the properties of remaining oil,and the next displacement methods in reservoirs either water-flooded or polymer-flooded are studied with rock permeability,oil saturation of coring wells,etc.The experimental results show that the hydrocarbons composition,viscosity,and mobility of remaining oil from both polymer-flooding and water-flooding reservoirs are heterogeneous,especially the former.Relative abundance of C 21- and C 21-C 40 hydrocarbons in polymer-flooding reservoirs is lower than that of water-flooding,but with more abundance of C 40+ hydrocarbons.It is then suggested that polymer flooding must have driven more C 40- hydrocarbons out of reservoir,which resulted in relatively enriched C 40+,more viscous oils,and poorer mobility.Remaining oil in water-flooding reservoirs is dominated by moderate viscosity oil with some low viscosity oil,while polymer-flooding mainly contained moderate viscosity oil with some high viscosity oil.In each oilfield and reservoir,displacement methods of remaining oil,viscosity,and concentration by polymer-solution can be adjusted by current viscosity of remaining oil and mobility ratio in a favorable range.A new basis and methods are suggested for the further development and enhanced oil recovery of remaining oil.

  5. Donghe Sandstone Subtle Reservoir Exploration and Development Technology in Hade 4 Oilfield

    Institute of Scientific and Technical Information of China (English)

    SunLongde; ZhouXinyuan; SongWenjie; JiangTongwen; ZhuWeihong; YangPing; NiuYujie; DiHongli

    2004-01-01

    Hade 4 oilfield is located on the Hadexun tectonic belt north of the Manjiaer depression in the Tarim basin, whose main target layer is the Donghe sandstone reservoir, with a burial depth over 5,000m and an amplitude below 34m, at the bottom of the Carboniferous. The Donghe sandstone reservoir consists of littoral facies deposited quartz sandstones of the transgressive system tract, overlapping northward and pinching out. Exploration and development confirms that water-oil contact tilts from the southeast to the northwest with a drop height of nearly 80m. The reservoir, under the control of both the stratigraphic overlap pinch-out and tectonism, is a typical subtle reservoir. The Donghe sandstone reservoir in Hade 4 oilfield also has the feature of a large oil-bearing area (over 130 km2 proved), a small thickness (average efficient thickness below 6m) and a low abundance (below 50)< 104t/km2). Moreover, above the target layer developed a set of igneous rocks with an uneven thickness in the Permian formation, thus causing a great difficulty in research of the velocity field. Considering these features,an combination mode of exploration and development is adopted, namely by way of whole deployment, step-by-step enforcement and rolling development with key problems to be tackled, in order to further deepen the understanding and enlarge the fruits of exploration and development. The paper technically focuses its study on the following four aspects concerning problem tackling. First, to strengthen the collecting, processing and explanation of seismic data, improve the resolution, accurately recognize the pinch-out line of the Donghe sandstone reservoir by combining the drilling materials in order to make sure its distribution law; second, to strengthen the research on velocity field, improve the accuracy of variable speed mapping, make corrections by the data from newlydrilled key wells and, as a result, the precision of tectonic description is greatly improved; third

  6. Application of Reservoir Seismic Inversion to the Damintun Sag in the Liaohe Oilfield

    Institute of Scientific and Technical Information of China (English)

    Duan Yunqing; Wang Yanchun; Qin Tian; Yang Wenjun; Gao Haiyan

    2007-01-01

    According to the special geologic conditions of the Damintun (大民屯) sag in the Liaohe(辽河) basin, with a complex structure and rapid lateral change of thin interbeds, the technique of logging-constraint seismic inversion based on prestack high-resolution seismic data was used in the description of oil-gas reservoirs. Reservoir seismic inversion can effectively identify underground complex geologic structures and seismic anomalous reflection volumes and quantitatively predict the distribution of sandstones in space and their variant law in combination with lithologic interpretation.This work studies the wave impedance inversion of high-resolution prestack seismic data, and logging multi-attribute data inversion, and applies these methods to the Damintun sag. As a result, the vertical resolution of reservoir prediction is raised, ability of identifying thin-interbed sand bodies is enhanced,reliability of reservoir prediction is improved, and favorable lithologic traps of this area are further confirmed. These effects are of significance in the exploration of hidden hydrocarbons in this oilfield.

  7. Comprehensive Adjustment in Late High Water Cut Stage for Wumishan Reservoir of Renqiu Oilfield

    Institute of Scientific and Technical Information of China (English)

    Liu Renda; Yuan Jianguo; Ke Quanming; Zhang Xuechen; Yu Junji

    1994-01-01

    @@ Introduction Wumishan reservoir of Renqiu Oilfield located in the north of Raoyang sag,Jizhong is a low saturation block-reservoir with bottom water, driven by elastic water pressure. The payzones belong to the Wumishan formation of Jixian system of Middle Proterozoic and their average oil column is 272 m hight. Reservoir rocks mainly consist of porous and cavernous dolomites. Effective fracture permeability is 1253 × 10-3μm2. Well completion method in the early stage is mainly open hole with average interval105 m, and the average well depth is 3141 m. Oil/water viscosity ratio in place is 34. 2m Pa. S. The reservoir was put into development in April 1976.Triangle pattern (3.02 wells/km2) was adopted. In December of the same year, it began to implement peripheral and bottom water flooding. By the end of1993, daily oil production was 2051 t ,recovery percent of the proven original oil in place was 30 % integrated with water cut was 86.1 %.

  8. 胜利油田勘探开发安全风险评估和应对管理研究%Research on Safety Risk Evaluation and Response Management for Exploration and Development in Shengli Oilfield

    Institute of Scientific and Technical Information of China (English)

    王来忠

    2011-01-01

    -surface structures in a networking way. Degree of risk is determined for each production process during construction of exploration and development project on basis of analysis on safety production status quo in Shengli Oilfield and dangerous factors during exploration and development project and safety risk management mode suitable for exploration and development project in an oilfield is researched to provide for construction and management organizations of construction project with reasonable and feasible suggestions and countermeasures of safety. Meanwhile, it may provide for oilfield administration and authority with technical support for implementation of supervision and decision-making to minimum potential risks related to safety and reduce damage due to possible accidents.

  9. Discrete Fracture Network Modelling in a Naturally Fractured Carbonate Reservoir in the Jingbei Oilfield, China

    Directory of Open Access Journals (Sweden)

    Junling Fang

    2017-02-01

    Full Text Available This paper presents an integrated approach of discrete fracture network modelling for a naturally fractured buried-hill carbonate reservoir in the Jingbei Oilfield by using a 3D seismic survey, conventional well logs, and core data. The ant tracking attribute, extracted from 3D seismic data, is used to detect the faults and large-scale fractures. Fracture density and dip angle are evaluated by observing drilling cores of seven wells. The fracture density distribution in spatiality was predicted in four steps; firstly, the ant tracking attribute was extracted as a geophysical log; then an artificial neural network model was built by relating the fracture density with logs, e.g., acoustic, gamma ray, compensated neutron, density, and ant tracking; then 3D distribution models of acoustic, gamma ray, compensated neutron and density were generated by using a Gaussian random function simulation; and, finally, the fracture density distribution in 3D was predicted by using the generated artificial neural network model. Then, different methods were used to build the discrete fracture network model for different types of fractures of which large-scale fractures were modelled deterministically and small-scale fractures were modelled stochastically. The results show that the workflow presented in this study is effective for building discrete fracture network models for naturally fractured reservoirs.

  10. 胜利油田采油工人体育锻炼行为特征的调查研究%The Investigation of the Behavioural Characteristics of Physical Exercises of Oil -extraction workers’in Shengli Oilfield

    Institute of Scientific and Technical Information of China (English)

    王合霞; 唐亮

    2015-01-01

    This study takes the workers from the front line as this research sample,who are in GuD-ong Oil -extraction Factory and ZhuangXi Oil -extraction Factory,which are two branches in Shen-gli Oilfield.This study approaches are literary investigation,questionnaires,experts interviews,log-ic analytical method,and data statistics.Meanwhile,this study utilizes the theory of transtheoretical model (TTM),which theory discusses the process from “stillness”to “activity”in the physical ex-ercises.As a result,this study reaches these conclusions as follows:Know about their general health at a low level.To most of them,their physical exercises are at preparation stage or at action stage. The orders of influential factors on physical exercise in this study are:⑴no time /tired⑵want to take exercise but indolent⑶feel bad /illness⑷short of relevant knowledge of physical exercises⑸short of coach⑹short of friends to take exercises together⑺afraid of trauma⑻short of ground and instruments⑼climate /environment is not good⑽cost of physical exercise is much higher⑾short of leader’s sup-port⑿short of families’support⒀short of interests of physical exercise.%以胜利油田桩西采油厂和孤东采油厂的第一线的采油工人为研究对象,采用文献资料法、访谈法、问卷调查法、逻辑分析法和数理统计法,以转换理论模型为指导,探讨采油工人从“静止”到“活动”再到“保持体育锻炼”的动态变化过程。结果表明:胜利油田采油工人对自身身体健康的整体认知水平较低。胜利油田采油工人的体育锻炼大都处于准备阶段及行动阶段。“没有时间且工作很累”和“想锻炼但惰性大”是影响采油工人体育锻炼行为最主要因素。

  11. Mechanistic understanding of calcium-phosphonate solid dissolution and scale inhibitor return behavior in oilfield reservoir: formation of middle phase.

    Science.gov (United States)

    Zhang, Ping; Shen, Dong; Ruan, Gedeng; Kan, Amy T; Tomson, Mason B

    2016-08-03

    Phosphonates are an important class of mineral scale inhibitors used for oilfield scale control. By injecting the phosphonate into an oilfield reservoir, calcium-phosphonate precipitate will form and subsequently release the phosphonate into produced water for scale control. In this study, a systematic procedure is developed to mechanistically characterize an acidic calcium-phosphonate amorphous material that is later developed into a middle phase and eventually a crystalline phase. The phosphonate used in this study is diethylenetriamine pentakis (methylene phosphonic acid) (DTPMP). An amorphous calcium-DTPMP solid is precipitated by mixing a calcium-containing solution with a DTPMP solution. The stoichiometry of this initially formed solid can be experimentally confirmed via a static dissolution test. Following another dynamic development test, two additional Ca-DTPMP solid phases, i.e., a middle phase and a crystalline phase have been observed. Electron microscopy and X-ray diffraction were employed to characterize the morphology and crystallinity of different Ca-DTPMP solids of interest. Evidently, the dynamic brine flushing of the Ca-DTPMP solid developed the initially amorphous material into a middle phase solid with an amorphous/microcrystalline structure and eventually into a crystalline material. Furthermore, a dissolution characterization study was carried out to determine the solubility product of the middle phase solid at different conditions. The obtained mechanistic understanding of the Ca-DTPMP solid related to precipitation chemistry, dissolution behavior and phase transition is critical to elucidate oilfield DTPMP return data and more importantly, can optimize the oilfield scale squeeze design to achieve an extended squeeze lifetime.

  12. Analysis of Information of Oil-bearing Reservoir Using Seismic Attributes Technique--A Case Study of HD4 Oilfield, Tarim Basin

    Institute of Scientific and Technical Information of China (English)

    CHEN Bo; LING Yun; LIU Qin-fu; WANG Xiao-ping

    2005-01-01

    The theoretical and practical analysis of reservoir thickness and oil-bearing information of thin reservoirs is performed by using seismic attributes and forward modelling. The results show that thin reservoir can be recognized using seismic attributes technique when its thickness is less than 1/4 of wavelength. Through analyzing the influence of tuning effect, the relationship between thin layer thickness and tuning amplitude is well revealed. A precise structure interpretation is conducted using relative amplitude preserved high-resolution seismic data. By taking the geologic condition and well data into account, the distribution of oil and gas of HD4 oilfield is analyzed and predicted. Based on seismic attributes. The result is helpful to promote the exploration and development in this oilfield.

  13. Predicting Terrestrial Flagstone Reservoirs in the Sha-I Member of the Qibei Depression in the Dagang Oilfield

    Institute of Scientific and Technical Information of China (English)

    LEI Huaiyan; LIU Zhihong; XU Maoquan; GUAN Baocong

    2004-01-01

    There are few 3-D seismic profiles and drillings in the middle part of the Qibei depression in the Dagang oilfield, and more than 70% of the 2-D seismic profiles were completed before the 1980s. Meanwhile, changes in the terrestrial formations in this region have been large and complex. These factors have made it difficult to predict reservoirs in this area. The purpose of this paper is to establish a methodology for predicting potential gas and oil reservoirs. Our research combines sequence stratigraphy, well-logs, and seismic analysis to elucidate the prediction of flagstone reservoirs in the S1 (Sha-I) Member in the middle of the Qibei depression. Previous research indicates that these rocks were deposited in an environment that had a semiarid, northern subtropical, and warm, humid climate. The objective strata currently consist mainly of lake facies, deeper lake facies, and shore-shallow lake facies. The study reveals that the lower section of the S1 Member is an important objective region for exploration.

  14. Impact of stylolitization on diagenesis of a Lower Cretaceous carbonate reservoir from a giant oilfield, Abu Dhabi, United Arab Emirates

    Science.gov (United States)

    Paganoni, Matteo; Al Harthi, Amena; Morad, Daniel; Morad, Sadoon; Ceriani, Andrea; Mansurbeg, Howri; Al Suwaidi, Aisha; Al-Aasm, Ihsan S.; Ehrenberg, Stephen N.; Sirat, Manhal

    2016-04-01

    Bed-parallel stylolites are a widespread diagenetic feature in Lower Cretaceous limestone reservoirs, Abu Dhabi, United Arab Emirates (UAE). Diagenetic calcite, dolomite, kaolin and small amounts of pyrite, fluorite, anhydrite and sphalerite occur along and in the vicinity of the stylolites. Petrographic observations, negative δ18OVPDB, fluid inclusion microthermometry, and enrichment in 87Sr suggest that these cements have precipitated from hot basinal brines, which migrated along the stylolites and genetically related microfractures (tension gashes). Fluid migration was presumably related to lateral tectonic compression events related to the foreland basin formation. The low solubility of Al3 + in formation waters suggests that kaolin precipitation was linked to derivation of organic acids during organic matter maturation, probably in siliciclastic source rocks. The mass released from stylolitization was presumably re-precipitated as macro- and microcrystalline calcite cement in the host limestones. The flanks of the oilfield (water zone) display more frequent presence and higher amplitude of stylolites, lower porosity and permeability, higher homogenization temperatures and more radiogenic composition of carbonates compared to the crest (oil zone). This indicates that oil emplacement retards diagenesis. This study demonstrates that stylolitization plays a crucial role in fluid flow and diagenesis of carbonate reservoirs during basin evolution.

  15. Study of Controll over Karstification of Buried Carbonate Hill Reservoir in Renqiu Oilfield

    Institute of Scientific and Technical Information of China (English)

    于俊吉; 韩宝平; 罗承建

    2004-01-01

    Based on boreholes and dynamic development data, the control over karstification of buried carbonate hill reservoir in Renqiu oil field was studied. The result shows that 1) Karstific caves, fissures, and pores in dolomite of Wumishan Formation are the most important reservoir voids, 2) the barrier of argillaceous dolomite can result in the existence of residual oil areas under oil-water interface, and 3) the mosores located on the surface of buried hill are also potential areas of residual oil.

  16. Shengli Making New Progress in Expansion at Overseas Markets

    Institute of Scientific and Technical Information of China (English)

    Yu Ankun

    2001-01-01

    @@ Aiming at its established strategic goal for international operation, Shengli Oilfields made new progress last year in expansion at overseas markets and cooperation with foreign firms. In the fields of contracting projects and providing labor services on the international oil/gas exploration and development market, it has embarked on a higher level of starting point with respect to number of projects,value of investment and volume of engineering.

  17. Sand control with ceramic screens in unconsolidated reservoirs demonstrated in the mature Gaiselberg oilfield

    Energy Technology Data Exchange (ETDEWEB)

    Wildhack, Stefanie [ESK Ceramics GmbH und Co. KG, Kempten (Germany); Muessig, Siegfried; Strahammer, Franz; Leitner, Manfred [Rohoel Aufsuchungs-AG (RAG), Vienna (Austria)

    2012-06-15

    The Oil Production in the operation centre Zistersdorf of the Rohoel-Aufsuchungs AG (RAG) looks back on a long history and a great variety of different types of completions. After the first oil-bearing well RAG-002 in 1937 the development of the RAG field started, followed by more exploration successes in the Gaiselberg oil field from 1938 onwards. The production comes primarily from the sandstone reservoirs of the Sarmat; the deeper horizons usually show a good compaction paired with reasonable permeability. The lower layers, however, are more and more unconsolidated. To prevent sand production and to protect the completion equipment metal screens in combination with gravel packs were installed. Gravel Packs, however, generate an additional pressure drop, which can lead in some cases to a production loss of up to 50% from the very beginning. In addition they are prone to abrasion and incur high completion costs. With the completion of the newly developed sand control screen based on ceramic materials, the next step towards sand control in an unconsolidated reservoir was implemented subsequent to the successful protection of well jewellery in wells after massive hydraulic frac operations. In this article the construction, deployment in the well Ga-016 below a sucker rod pump and the analysis of the production performance are all discussed. It will be demonstrated that with this application a fundamental step in sand control in unconsolidated reservoirs has been achieved. (orig.)

  18. Legal aspects and technical alternatives for the treatment of reservoir brines at the Activo Luna oilfield, Mexico.

    Science.gov (United States)

    Birkle, Peter; Cid Vázquez, Adolfo L; Fong Aguilar, J L

    2005-01-01

    Deep formation water, extracted as an undesired byproduct from on-shore production wells at the Activo Luna oilfield and processed in adjacent oil fields, are highly enriched in salt minerals, especially in sodium chloride (NaCl) (262 000 mg/L), but also in metals and nonmetals, such as strontium (Sr) (2068 mg/L), bromine (Br) (2034 mg/L), boron (B) (396 mg/ L), iodine (I) (43.4 mg/L), selenium (Se) (3.74 mg/L), and arsenic (As) (0.55 mg/L). Direct reinjection of the brine underground is not possible because of elevated pressure conditions within the petroleum reservoir. The disposal into near shore areas of the Gulf of Mexico without treatment must be rejected because of a) elevated concentrations of some toxic elements, such as B, silver (Ag), thallium (Tl), Se and cadmium (Cd), which exceed permissible limits of environmental legislation for surface discharge (Official Mexican norms NOM-001-ECOL-1998 and CE-CCA-001/89), and b) differences in density that could cause the descent of hypersaline fluid to the ocean floor, potentially affecting the diversity and survival of the benthic ecosystem. Conventional treatment techniques, such as microfiltration or reverse osmosis, are not suitable for the Activo Luna brines because of their extreme mineralization, which will cause pressure conditions exceeding 200 bars across the membrane. As an alternative process, the evaporation of the entire brine volume of approximately 200 m3/day by solar ponds or industrial crystallization plants is suggested. The residual precipitated residuals are composed mainly of chlorine (Cl) (9460 tons/year), sodium (Na) (4230 tons/ year), calcium (Ca) (1028 tons/year), potassium (K) (207 tons/year), and magnesium (Mg) (65.8 tons/year). As an alternative to its disposal on a dumpsite, some special minerals (especially NaCl, Mg, Sr, and Br) could be recovered for its economic value.

  19. Statistical Verification of Hydraulic Units in a Heterogeneous Reservoir of the Liaohe Oilfield

    Institute of Scientific and Technical Information of China (English)

    Wei Zhou; Shuxian Liang; Desheng Ma; Zhonghua Tang

    2014-01-01

    The Liaohe Oil Field has passed peak production and correct discrimination of hy-draulic units (HU) has vital significance for forecasting remaining oil distribution in a petroleum reservoir, enhancing the recovery ratio and adjusting development plans. A unified multi-parameter cluster analysis and fuzzy quality synthetic evaluations have been used for the identification of res-ervoir hydraulic units. This paper analyzes three predictions within Block Shen-95: intersection of multiple well-logs, independent mulitple well-logs and mutually exclusive multiple well-logs. HU has been delineated to conveniently compute permeability and serve as the basis of a structural model for enhanced simulation study. HU has been defined by the flow zone indicator concept using a modified Kozeny-Carmen equation. The Bayesian method was used to predict HU at uncored wells by constructing a probability database and then integrating established HU and well-log responses at cored wells. HU has then been inferred from the database using well-log responses. Estimated permeability from predicted HU gave an overall improved permeability match when compared with traditional statistical methods. The method proved most favourable when using mutually exclusive multiple well-logs, most significant by integrating reservoir performance with HU distribution and indicating that reasonable prediction had been obtained at uncored wells using this mutually exclu-sive approach. The distribution pattern was revealed by interwell HU correlation using modified depositional cycles as a framework, an integration step that qualitatively examines prediction accu-racy. Detailed analysis has been carried out to determine and verify the characteristics of each kind of flow unit, providing a detailed geological basis for control of the oil field.

  20. Alkali/Surfactant/Polymer Flooding in the Daqing Oilfield Class II Reservoirs Using Associating Polymer

    Directory of Open Access Journals (Sweden)

    Ru-Sen Feng

    2013-01-01

    Full Text Available Hydrophobically modified associating polyacrylamide (HAPAM has good compatibility with the Daqing heavy alkylbenzene sulfonate surfactant. The HAPAM alkali/surfactant/polymer (ASP system can generate ultralow interfacial tension in a wide range of alkali/surfactant concentrations and maintain stable viscosity and interfacial tension for 120 days. The HAPAM ASP system has good injectivity for the Daqing class II reservoirs (100–300 × 10−3 μm2 and can improve oil recovery by more than 25% on top of water flooding. In the presence of both the alkali and the surfactant, the surfactant interacts with the associating groups of the polymer to form more micelles, which can significantly enhance the viscosity of the ASP system. Compared with using HPAM (Mw = 2.5 MDa, using HAPAM can reduce the polymer use by more than 40%.

  1. Jet Drilling and Optimizing Parameter Drilling Technology in Shengli Oil Fields

    Institute of Scientific and Technical Information of China (English)

    Chen Yue; Peng Junsheng

    1996-01-01

    @@ In Shengli oilfield, remarkable achievements have been obtained in research and tests on the technologies of jet drilling and optimizing parameter drilling, extensive applications of the technologies have greatly improved drilling speed and sharply decreased drilling time and costs, thus achieving excellent social and economic benefits.

  2. Effects of nitrate injection on microbial enhanced oil recovery and oilfield reservoir souring.

    Science.gov (United States)

    da Silva, Marcio Luis Busi; Soares, Hugo Moreira; Furigo, Agenor; Schmidell, Willibaldo; Corseuil, Henry Xavier

    2014-11-01

    Column experiments were utilized to investigate the effects of nitrate injection on sulfate-reducing bacteria (SRB) inhibition and microbial enhanced oil recovery (MEOR). An indigenous microbial consortium collected from the produced water of a Brazilian offshore field was used as inoculum. The presence of 150 mg/L volatile fatty acids (VFA´s) in the injection water contributed to a high biological electron acceptors demand and the establishment of anaerobic sulfate-reducing conditions. Continuous injection of nitrate (up to 25 mg/L) for 90 days did not inhibit souring. Contrariwise, in nitrogen-limiting conditions, the addition of nitrate stimulated the proliferation of δ-Proteobacteria (including SRB) and the associated sulfide concentration. Denitrification-specific nirK or nirS genes were not detected. A sharp decrease in water interfacial tension (from 20.8 to 14.5 mN/m) observed concomitantly with nitrate consumption and increased oil recovery (4.3 % v/v) demonstrated the benefits of nitrate injection on MEOR. Overall, the results support the notion that the addition of nitrate, at this particular oil reservoir, can benefit MEOR by stimulating the proliferation of fortuitous biosurfactant-producing bacteria. Higher nitrate concentrations exceeding the stoichiometric volatile fatty acid (VFA) biodegradation demands and/or the use of alternative biogenic souring control strategies may be necessary to warrant effective SRB inhibition down gradient from the injection wells.

  3. Application of Spectral Decomposition to Detection of Fracture-Cavity Carbonate Reservoir Beds in the Tahe Oilfield, Tarim Basin, NW China

    Institute of Scientific and Technical Information of China (English)

    LIU Xiaoping; YANG Xiaolan; ZHANG Yazhong; HAN Long

    2008-01-01

    Ordovician fracture-cavity carbonate reservoir beds are the major type of producing formations in the Tahe oilfieid, Tarim Basin. The seismic responses of these beds clearly changes depending on the different distance of the fracture-cavity reservoir bed from the top of the section. The seismic reflection becomes weak or is absent when the fracture-cavity reservoir beds are less than 20 ms below the top Ordovician. The effect on top Ordovician reflection became weaker with deeper burial of fracture-cavity reservoir beds but the developed deep fracture-cavity reservoir beds caused stronger reflection in the interior of the Ordovician. This interior reflection can be divided into strong long-axis, irregular and bead string reflections, and was present 80 ms below the top Ordovician. Aimed at understanding reflection characteristics, the spectral decomposition technique, which uses frequency to "tune-in" bed thickness, was used to predict Ordovician fracture-cavity carbonate formations in the Tahe oilfield. Through finely adjusting the processing parameters of spectral decomposition, it was found that the slice at 30 Hz of the tuned data cube can best represent reservoir bed development. Two large N-S-trending strong reflection belts in the mid-western part of the study area along wells TK440- TK427-TK417B and in the eastern part along wells TK404-TK409 were observed distinctly on the 30 Hz slice and 4-D time-frequency data cube carving. A small N-S trending reflection belt in the southern part along wells T403-TK446B was also clearly identified. The predicted reservoir bed development area coincides with the fracture-cavities connection area confirmed by drilling pressure testing results. Deep karst cavities occur basically in three reservoir bed-development belts identified by the Ordovician interior strong reflection. Spectral decomposition proved to be a useful technique in identifying fracture-cavity reservoir beds.

  4. Diagenetic characteristics and reservoir quality of the Lower Cretaceous Biyadh sandstones at Kharir oilfield in the western central Masila Basin, Yemen

    Science.gov (United States)

    Hakimi, Mohammed Hail; Shalaby, Mohamed Ragab; Abdullah, Wan Hasiah

    2012-06-01

    The Lower Cretaceous Biyadh Formation in the Masila Basin is an important hydrocarbon reservoir. However, in spite of its importance as a reservoir, published studies on the Biyadh Formation more specifically on the diagenesis and relate with reservoir quality, are limited. Based on core samples from one well in the Kharir oilfield, western central Masila Basin, this study reports the lithologic and diagenetic characteristics of this reservoir. The Biyadh sandstones are very fine to very coarse-grained, moderate to well sorted quartzarenite and quartzwacke. The diagenetic processes recognized include mechanical compaction, cementation (carbonate, clay minerals, quartz overgrowths, and a minor amount of pyrite), and dissolution of the calcite cement and feldspar grains. The widespread occurrences of early calcite cement suggest that the Biyadh sandstones lost a significant amount of primary porosity at a very early stage of its diagenetic history. Based on the framework grain-cement relationships, precipitation of the early calcite cement was either accompanied or followed by the development of part of the pore-lining and pore-filling clay cements. Secondary porosity development occurred due to partial to complete dissolution of early calcite cement and feldspar grains. In addition to calcite, several different clay minerals including kaolinite and chlorite occur as pore-filling and pore-lining cements. Kaolinite largely occurs as vermiform and accelerated the minor porosity loss due to pore-occlusion. Chlorite coating grains helps to retain primary porosity a by retarding the envelopment of quartz overgrowths. Porosity and permeability data exhibit good inverse correlation with cement. Thus, reservoir quality is controlled by pore occluding cement. Diagenetic history of the Biyadh sandstones as established here is expected to help better understanding and exploitation of this reservoir. The relation between diagenesis and reservoir quality is as follows: the

  5. 大庆葡萄花油层氮气专打技术实践%Practice of Nitrogen Drilling in Putaohua Reservoir of Daqing Oilfield

    Institute of Scientific and Technical Information of China (English)

    王建艳; 李瑞营; 孙妍; 孙莉

    2013-01-01

    大庆油田外围葡萄花油层作为中浅层探评井开发的主要目的层,属于“三低”油藏,常规钻井方式开发成本高,经济效益差。由于受“三低”油藏地质特点的影响,常规钻进时钻井液在压差作用下产生滤液从而对储层造成一定程度的损害,受地层本身特性以及过平衡钻井2个因素共同作用,造成单井产量低。氮气作为一种循环介质在储层进行气体钻井,在储层发现和保护上具有明显优势。2011年在外围中浅层进行了葡萄花油层氮气专打钻井技术实践,从井身结构、钻井方式和完井方式3方面进行技术创新,现场试验4口井,平均钻速达24.43 m/h,为邻井常规钻井相应井段机械钻速的2倍以上,钻进过程中排砂口处即发现油流,储层保护效果好,预计增产效果显著。%Putaohua reservoir is the main target layer for exploration appraisal well in middle-shallow layer of periphery of Daqing oilfield, but it is a“three low” reservoir, the conventional drilling will cause high cost and low benefit;and by the characteristics of“three low” reservoir, the filtrate under differential pressure is harmful to reservoir.The formation charac-teristics and overbalance drilling result in low single well production.As a circulating medium of gas drilling in the reser-voir, nitrogen has obvious advantages in the reservoir discovery and protection.The nitrogen drilling practice was made in Putaohua reservoir in middle-shallow layer of periphery of Daqing oilfield in 2011, technological innovation was carried out in the well structure, drilling technology and completion methods, the average penetration rate reached 24.43m/h in the 4 test wells, which was more than 2 times of that of adjacent wells by conventional drilling technology.Oil flow was found at sand draining outlet in the drilling process with good reservoir protection effects.

  6. Heavy Oil Development Technology of Liaohe Oilfield

    Institute of Scientific and Technical Information of China (English)

    Han Yun

    2007-01-01

    @@ Liaohe Oilfield, the largest heavy oil production base in China, features in various reservoir types, deep burial, and wide range of crude oil viscosity. For many years, a series of technologies have been developed for different oil products and reservoir types of the oilfield, of which water flooding, foam slug drive, steam stimulation, steam drive,and SAGD are the main technologies. After continuous improvement, they have been further developed and played an important role in the development of heavy oil in the oilfield.

  7. Research of HDNS technology for shallow super heavy oil reservoir in Chunfeng Oilfield%春风油田浅层超稠油HDNS技术研究

    Institute of Scientific and Technical Information of China (English)

    王学忠; 席伟军; 沈海兵

    2013-01-01

    There are thinner layers and serious thermal loss in shallow super heavy oil reservoir in Chunfeng Oilfield on the west of Junggar Basin.Aiming at these difficult problems,this paper puts forward a HDNS thermal recovery technology which includes drilling horizontal wells,adding viscosity reducer,and injecting nitrogen gas and steam.Nitrogen gas can re-duce the thermal conductivity factor of rock and the heat loss of thin heavy oil reservoir along the top caprock.Upward o-verlapped N2 gas has heat preservation function for the formation.The viscosity reducer can effectively reduce viscosity of crude oil and significantly decrease the yield value of underground crude oil and the critical temperature of crude oil flow. As a result,production period is extended and periodic oil production is increased.The injection-production integration string and the high angle deviated pump technology for horizontal well were adopted.Using the HDNS technology,it is to form productivity of 61.7 ×104 t/a with a oil production rate of more than 3.0% in Chunfeng Oilfield.%针对准噶尔盆地西缘春风油田浅层超稠油油层薄、地层热损失严重的难题,提出了水平井、降黏剂、氮气、蒸汽强化热采方式(HDNS)。氮气降低岩石导热系数,降低薄层稠油油藏沿上部盖层的热量损失。地层内氮气向上超覆,起到地层保温作用。降黏剂有效降低原油黏度,大幅降低了地下原油屈服值和原油能够流动的临界温度,延长了生产周期,增加了周期产油量。配套了注采一体化管柱和水平井大斜度泵工艺。春风油田应用HDNS技术已经建成产能61.7×104 t/a,采油速度大于3%。

  8. The Reservoir Sensitivity and Water Injection Feasibility Analysis on Chang-2 Reservoir in Xiasiwan Oilfield%下寺湾油田长2储层敏感性及注水可行性分析

    Institute of Scientific and Technical Information of China (English)

    肖转; 王桂成; 刘志强; 周婷婷; 王媛媛; 叶超

    2012-01-01

    By studying the basic character of Xiasiwan oilfield chang-2 reservoirs,evaluation and analysis of the reservoir rock sensitivity.The results show that acid sensitivity is medium,velocity,salt,alkali sensitivity are weak,water sensitivity is weaker than medium.The chlorite content is relatively high in the clay minerals,so it is possible occur acid sensitivity and not suitable for transform of acidification.Chang-2 reservoir is low porosity and low permeability,the lack of natural energy and seriousness of formation deficit.To solve the above problem and restore the formation energy.In papers Xiasiwan oilfield chang-2 reservoirs conduct analysis and research of water injection development and demonstrated its feasibility,by implement and effect of water injection development,ultimately improving the recovery ratio and development benefit.%通过下寺湾油田长2储层基本性质的研究,储层岩石的敏感性评价分析,得出该区具有弱速敏、中等偏弱水敏、弱盐敏、中等酸敏和弱碱敏等储层敏感性。粘土矿物中绿泥石含量相对较高,该区储层发生酸敏的可能性较大,不适合酸化改造。长2油藏是低孔、低渗油藏,天然能量不足,地层亏空严重。针对以上问题,为了恢复地层能量,本文对下寺湾油田长2油藏进行了注水开发的分析研究,论证了注水开发的可行性,通过注水开发的实施及效果观察,最终达到提高该油田的采收率与开发效益。

  9. Study and application on the evaluation method of porous formation for long-term waterflooding sand reservoir

    Institute of Scientific and Technical Information of China (English)

    Wang Changjiang; Jiang Hanqiao; Chen Minfeng; Geng Zhanli; Liu Pengfei

    2009-01-01

    Nine targets which stand both for the static characteristic of produced formations and the dynamic parameter of wells including the average permeability, variation coefficient of permeability, moving capability, remaining recoverable reserves, coefficient of flooding, daily oil production, increasing rate of water cut, cumulative liquid production per unit meter and efficiency index of oil production are selected as the evaluation indexes, a novel model to evaluate the porous formations in long-term waterflooding sand reservoir was established by using the support vector machine and clustering analysis. Data of 57 wefts from Shentuo 21 block Shengli oilfield was analyzed by using the model. Four kinds of forma-tion groups were gained. According to the analysis result, different adjustment solutions were put forward to develop the relevant formations. The Monthly oil production increased 7.6 % and the water cut decreased 8.9 % after the adjusted solutions. Good results indicate that the learning from this method gained will be valuable adding to other long-term wa-terflooding sand reservoirs in Shengli oilfield and other similar reservoirs worldwide.

  10. Appalachian region oilfield reservoir investigations, Gordon Stray, Gordon, and fourth sands, Smithfield field, Grant District, Wetzel County, W. Va

    Energy Technology Data Exchange (ETDEWEB)

    Whildon, C.E. Jr.; Overbey, W.K. Jr.

    1965-09-01

    The U.S. Bureau of Mines is investigating the susceptibility of selected pressure-depleted Appalachian region oil reservoirs to more intensive oil recovery methods. A map shows the well locations, formation samples and published reports of wells cored under the current reservoir evaluation program. Also, a map shows a part of Wetzel County, W. Va., showing oil-productive areas, the location of the cored well and geologic structure. A columnar section is given of the geological formations in the vicinity of the cored wells. Well logs were taken to supplement core information. Core analysis, well logs, geology, field development, and production history are presented. (19 refs.)

  11. Research on reservoir bed heterogeneity, interlayers and seal layers and controlling factors of 2+3 sands of upper second member, Shahejie Formation, in the west of the Pucheng Oilfield

    Institute of Scientific and Technical Information of China (English)

    Zhang Wei; Zhang Jinliang; Xie Jun

    2008-01-01

    Terminal fans have formed the sedimentary system of the 2+3 sands of the upper second member,Shahejie formation in the west of the Pucheng Oilfield,Bohai Bay Basin,East China.Based on well logging data and physical properties of the reservoir beds,the 2+3 sands were divided into 16 sublayers.The heterogeneity of reservoir beds and distribution of interlayers and seal layers in the 2+3 sands were investigated.The intra-layer heterogeneity and inter-layer heterogeneity primarily belong to the severely heterogeneous classification.The spatial differentiation of sedimentary microfacies resulted in a change of reservoir bed heterogeneity,strong in the middle and southern parts,weak in the northern part.Spatial distribution of interlayers and seal layers is dominated by sedimentary microfacies,and they are thick in north-eastern and middle parts,thin in the south-western part.

  12. Study on Relation between Hydrodynamic Feature Size of HPAM and Pore Size of Reservoir Rock in Daqing Oilfield

    Directory of Open Access Journals (Sweden)

    Qing Fang

    2015-01-01

    Full Text Available The flow mechanism of the injected fluid was studied by the constant pressure core displacement experiments in the paper. It is assumed under condition of the constant pressure gradient in deep formation based on the characteristic of pressure gradient distribution between the injection and production wells and the mobility of different polymer systems in deep reservoir. Moreover, the flow rate of steady stream was quantitatively analyzed and the critical flow pressure gradient of different injection parameters polymer solutions in different permeability cores was measured. The result showed that polymer hydrodynamic feature size increases with the increasing molecular weight. If the concentration of polymer solutions overlaps beyond critical concentration, then molecular chains entanglement will be occur and cause the augment of its hydrodynamic feature size. The polymer hydrodynamic feature size decreased as the salinity of the dilution water increased. When the median radius of the core pore and throat was 5–10 times of the polymer system hydrodynamic feature size, the polymer solution had a better compatibility with the microscopic pore structure of the reservoir. The estimation of polymer solutions mobility in the porous media can be used to guide the polymer displacement plan and select the optimum injection parameters.

  13. The Analysis on the Reservoir Characteristics and Reservoir Performance Analysis in Chunfeng Oilfield%春风油田沙湾组储层特征及储集性能分析

    Institute of Scientific and Technical Information of China (English)

    张瑞香; 杨少春; 宋璠; 王杰

    2016-01-01

    春风油田位于准噶尔盆地西部车排子凸起的东北部,主要发育扇三角洲前缘水下分流河道与辫状河三角洲前缘水下分流河道微相。在地层精细划分对比及沉积微相研究基础之上,通过岩心、薄片观察,结合扫描电镜、X-衍射分析、压汞曲线等实验数据,对春风油田沙湾组一段1砂组展开储层特征及主控因素研究。研究结果表明:沙湾组一段1砂组N1 s11层主要为棕褐色含砾不等粒砂岩,经鉴定认为属于岩屑质长石砂岩,目的层自下而上呈现出底砾岩→粗砂岩+含砾砂岩→细砂岩+泥质粉砂岩三层结构;储集空间主要为原生粒间孔,大孔粗喉型及大孔中喉型为目的层油气主要富集型孔隙结构;常见碳酸盐胶结,不同井区不同相带下碳酸盐含量差异较大,为影响储层物性的主控因素。%The Chunfeng Oilfield is locates in the northeast of the Chepaizi Uplift , the western margin of the Junggar Basin , the main Sedimentary microfacies are fan detla front underwater distributary channel and braided river delta front underwater distributary channel .Base on the contrast of stratigraphic subdivision and the research of sedimentary microfacies , through observing the core , thin sections , combineing with the experimental datas of scanning electron microscopy , X-difraction analysis and mercury curve , the reservoir characteristics and the main controlling factors of N 1 s11 layer in Chunfeng Oilfield were researched .The results show that N 1 s11 brown conglomerat-ic sandstone reservoirs are mainly identified lithic arkose , the layer from bottom to top presents three layers struc-ture:the basal conglomerate grit , conglomeratic sandstone and fine sandstone , fine sandstone and argillaceous silt-stone .Reservoir spaces are mainly primary intergranular pore , large pore coarse throat type and large pore medium throat type are the main pore structures for storing oil

  14. 坪北油田特低渗透油藏超前注水探索与实践%Exploration and Practice of Advanced Waterflooding in Ultra-Low-Permeability Reservoirs of Pingbei Oilfield

    Institute of Scientific and Technical Information of China (English)

    张丽媛; 朱党辉; 祝俊山

    2012-01-01

    As an important technique for enhancing recovery ratio of low-permeability oilfield,advanced waterflooding has been widely applied to many oilfields in China and has achieved a good development effect.To increase proven deposits recovery and development effect in low-permeability oilfield,this paper,with the help of development experiences abroad and at home as well as from neighbor oilfields,explores reasonable technical parameters for advanced waterflooding favorable to geological features of Pingbei Oilfield and builds displacement pressure system to decrease damage on the stratum caused by start-up pressure gradient and medium deformation.In practice,it suggests using advanced waterflooding to keep desirable strata pressure,lessen the damage on reservoir permeability,lower water content and decline rate in oil production and improve ultimate recovery.%超前注水作为特低渗透油田提高采收率的一种重要的技术方法,在我国很多油田得到广泛的应用,并且都获得了良好的开发效果。为了提高特低渗透油田探明储量的采收率和开发效果,根据坪北油田的地质特点,借鉴国内外油田及邻近油田的开发经验,探索适合油田超前注水的合理技术参数,建立有效的驱替压力系统,在一定程度上减小启动压力梯度和介质变形对地层的伤害。利用超前注水保持合理的地层压力,降低对储层渗透率的伤害,降低油井投产后的含水率和递减率,提高最终采收率。

  15. Well logging evaluation of water-flooded layers and distribution rule of remaining oil in marine sandstone reservoirs of the M oilfield in the Pearl River Mouth basin

    Science.gov (United States)

    Li, Xiongyan; Qin, Ruibao; Gao, Yunfeng; Fan, Hongjun

    2017-03-01

    In the marine sandstone reservoirs of the M oilfield the water cut is up to 98%, while the recovery factor is only 35%. Additionally, the distribution of the remaining oil is very scattered. In order to effectively assess the potential of the remaining oil, the logging evaluation of the water-flooded layers and the distribution rule of the remaining oil are studied. Based on the log response characteristics, the water-flooded layers can be qualitatively identified. On the basis of the mercury injection experimental data of the evaluation wells, the calculation model of the initial oil saturation is built. Based on conventional logging data, the evaluation model of oil saturation is established. The difference between the initial oil saturation and the residual oil saturation can be used to quantitatively evaluate the water-flooded layers. The evaluation result of the water-flooded layers is combined with the ratio of the water-flooded wells in the marine sandstone reservoirs. As a result, the degree of water flooding in the marine sandstone reservoirs can be assessed. On the basis of structural characteristics and sedimentary environments, the horizontal and vertical water-flooding rules of the different types of reservoirs are elaborated upon, and the distribution rule of the remaining oil is disclosed. The remaining oil is mainly distributed in the high parts of the structure. The remaining oil exists in the top of the reservoirs with good physical properties while the thickness of the remaining oil ranges from 2–5 m. However, the thickness of the remaining oil of the reservoirs with poor physical properties ranges from 5–8 m. The high production of some of the drilled horizontal wells shows that the above distribution rule of the remaining oil is accurate. In the marine sandstone reservoirs of the M oilfield, the research on the well logging evaluation of the water-flooded layers and the distribution rule of the remaining oil has great practical significance

  16. M 油田稠油油藏蒸汽驱数值模拟研究%Numerical Simulation of Steam Drive for the Heavy Oil Reservoirs of M Oilfield

    Institute of Scientific and Technical Information of China (English)

    张博; 陈军斌

    2014-01-01

    M 油田为一浅层特稠油油藏,目前已进入蒸汽开发后期,采出程度高,产量递减加快,开发效益下降。为挖掘油藏北部汽驱区潜力并提升开发效果,选择有代表性的井组,利用数值模拟的方法对其注汽速度、注汽干度进行优化设计,并对不同间歇汽驱开发方式的效果进行了对比研究,最后优选出适合目标区域的蒸汽驱开发方式。研究结果对相似油田蒸汽驱的开发具有一定的借鉴意义。%M oilfield belongs to shallow extra-heavy oil reservoir.It has come into later stage of steam drive and takes on characteristics as high degree of recovery, increasing decline of production and shrinking benefits.In order to exploit potentialities of northern reservoir and improve the reservoir development,typical well groups were chosen for numerical simulation to optimize injection rates,team quality and to compare development effect of different intermittent steam-flood.As a result,an optimal alternative was chosen for the target zone.This research approach provided a reference significance for steam-flood of similar oilfield.

  17. SZ36-1油田注入水与储层配伍性实验研究%SZ36-1 oilfield injection water with experimental study on reservoir compatibility

    Institute of Scientific and Technical Information of China (English)

    余焱冰; 高建崇; 孟祥海; 山金城; 张岭; 邹剑; 刘长龙; 周法元

    2012-01-01

    The offshore oilfield water flooding has been restricted by ocean operational environment and resource constraints. The source of injected water can only use the resources such as limited groundwater as well as production treated wastewater. Therefore it is particularly important to study the compatibility between injected water and reservoir bed. Based on the compatibility study on shallow groundwater, production wastewater and mixed compatible water with underground rocks, the reservoir damage caused by different kinds of injection water is discussed. It provides the foundation for selecting the best mixed proportion of clean-polluted, and provides the basis for efficient water injecting work with limited water resources in oilfields.%海上注水开发油田由于受到海洋作业环境与资源限制,注水水源仅能采用有限的地下水以及生产处理污水资源,为此对注入水与储层进行配伍性研究显得尤为重要.通过浅层地下水、生产污水以及混配水与地层岩石的配伍性实验研究,论证不同注入水源对储层的伤害程度,为油田选取最佳清污混配比例提供依据,保障油田在有限的水资源条件下的高效注水工作.

  18. Prediction Method of Safety Mud Density in Depleted Oilfields

    Directory of Open Access Journals (Sweden)

    Yuan Jun-Liang

    2013-04-01

    Full Text Available At present, many oilfields were placed in the middle and late development period and the reservoir pressure depleted usually, resulting in more serious differential pressure sticking and drilling mud leakage both in the reservoir and cap rock. In view of this situation, a systematic prediction method of safety mud density in depleted oilfields was established. The influence of reservoir depletion on stress and strength in reservoir and cap formation were both studied and taken into the prediction of safety mud density. The research showed that the risk of differential pressure sticking and drilling mud leakage in reservoir and cap formation were both increased and they were the main prevention object in depleted oilfields drilling. The research results were used to guide the practice drilling work, the whole progress gone smoothly.

  19. Study on effective method for development of heavy oil reservoir with high wax content in Jilin Oilfield%吉林油田高含蜡稠油油藏有效开发方式研究

    Institute of Scientific and Technical Information of China (English)

    程静波

    2011-01-01

    C油田为吉林油田新发现的浅层稠油油田,由于埋藏浅而引起油层低温、低压,油层条件下原油流动性差,开采过程中储层易受析蜡冷伤害,造成常规开采产能低,甚至无产能,严重影响了油田的正常生产,制约了该区储量的有效动用。针对这一现状,对该油田重点开展了原油析蜡实验、热采物理模拟实验、热采数值模拟研究,从理论上明确了提高地层温度、保持地层压力、预防原油析蜡是实现C油田有效开发的关键。结合现场蒸汽吞吐、蒸汽驱、火烧油层等多种热采试验的开发效果,明确了主体资源可采用热水驱开发,局部低温、高含蜡区可采用火烧油层的开发方式。%C oil field is shallow heavy oil reservoir discovered recently in Jilin Oilfield.Due to the shallow burial depth,the reservoir temperature and pressure are low,the crude oil fluidity is poor,and the reservoir suffers easily wax precipitation code damage during the production process,which makes the low deliverability,even no deliverability.That seriously affects the normal production of oilfield and restricts the effective development of reserves in the area.In view of this situation,crude oil wax precipitation experiment,physical simulation experiment and numerical simulation of thermal recovery are carried out.It is defined that the key for effective development is to increase the formation temperature,to maintain reservoir pressure and to prevent crude oil wax precipitation.Combined with the development effectiveness of the steam stimulation,steam flood and fire flood,it is defined that hot water drive can be used to most resources and fire flood can be used in local district with low temperature and high wax content.

  20. Study on distribution of reservoir endogenous microbe and oil displacement mechanism.

    Science.gov (United States)

    Yue, Ming; Zhu, Weiyao; Song, Zhiyong; Long, Yunqian; Song, Hongqing

    2017-02-01

    In order to research oil displacement mechanism by indigenous microbial communities under reservoir conditions, indigenous microbial flooding experiments using the endogenous mixed bacterium from Shengli Oilfield were carried out. Through microscopic simulation visual model, observation and analysis of distribution and flow of the remaining oil in the process of water flooding and microbial oil displacement were conducted under high temperature and high pressure conditions. Research has shown that compared with atmospheric conditions, the growth of the microorganism metabolism and attenuation is slowly under high pressure conditions, and the existence of the porous medium for microbial provides good adhesion, also makes its growth cycle extension. The microbial activities can effectively launch all kinds of residual oil, and can together with metabolites, enter the blind holes off which water flooding, polymer flooding and gas flooding can't sweep, then swap out remaining oil, increase liquidity of the crude oil and remarkably improve oil displacement effect.

  1. 胜利油田存货管理的问题及对策%On The Inventory Management Problems and Its Solution in Shengli Oilfiled

    Institute of Scientific and Technical Information of China (English)

    张晓君

    2015-01-01

    Being an important asset of an enterprise,inventory can't be ignored in enterprise management.As a large state-owned enterprise,Shengli Oilfield has many kinds of inventories,which occupy much fund.Therefore,it is especially impor-tant to improve the benefits of Shengli Oilfield by carrying out the correct inventory management,reducing the average level of fund occupation,speeding up the inventory flow and the turnover rate of total assets.Based on the actual work,the list of the problems on the inventory management and the proposal for solution has been put forward in this article,which is of some cer-tain reference value for the inventory management in Shengli Oilfield.%存货是企业的重要资产,是企业管理中不可忽视的一部分。胜利油田作为大型国有企业,存货种类名目繁多,资金占用额度大,因而通过实施正确的存货管理方法,降低企业的平均资金占用水平,提高存货的流转速度和总资产周转率等办法来提高胜利油田效益尤为重要。

  2. Methods of Maintaining Steady Oil Production In Late High- Water-Cut Stage in Daqing Oilfields

    Institute of Scientific and Technical Information of China (English)

    Liu Heng; Wang Jiaying

    1994-01-01

    @@ Introduction By the end of 1990, Daqing Oilfields had been producing for 30 years with water flooding. The composite water cut was as high as 79%. In the general regularity of developing large scale sandstone reservoirs,the oilfields had been in their later stage of production, characterized by rapid decline of oil output. It is very difficult to keep a steady oil production without any breakthrough in oilfield development technologies.

  3. Adjustment and effects of polymer flooding at heave oil fracking reservoirs in He-II Block of Shuanghe Oilfield%双河油田核二段断块油藏聚合物驱调整对策及效果

    Institute of Scientific and Technical Information of China (English)

    李红; 段小坤; 李志超; 赵瑞; 李志平; 蒋彩红

    2015-01-01

    The test of polymer flooding at a heavy oil fracking reservoir in He-II Block, Shuanghe Oilfield is investigated in this paper for reference of other similar adjustment.%本文对双河油田核二段的普通稠油断块油藏聚驱开发试验进行了讨论,为其它类似单元的聚驱调整提供参考依据。

  4. Microbial Communities in Long-Term, Water-Flooded Petroleum Reservoirs with Different in situ Temperatures in the Huabei Oilfield, China

    Science.gov (United States)

    Tang, Yue-Qin; Li, Yan; Zhao, Jie-Yu; Chi, Chang-Qiao; Huang, Li-Xin; Dong, Han-Ping; Wu, Xiao-Lei

    2012-01-01

    The distribution of microbial communities in the Menggulin (MGL) and Ba19 blocks in the Huabei Oilfield, China, were studied based on 16S rRNA gene analysis. The dominant microbes showed obvious block-specific characteristics, and the two blocks had substantially different bacterial and archaeal communities. In the moderate-temperature MGL block, the bacteria were mainly Epsilonproteobacteria and Alphaproteobacteria, and the archaea were methanogens belonging to Methanolinea, Methanothermobacter, Methanosaeta, and Methanocella. However, in the high-temperature Ba19 block, the predominant bacteria were Gammaproteobacteria, and the predominant archaea were Methanothermobacter and Methanosaeta. In spite of shared taxa in the blocks, differences among wells in the same block were obvious, especially for bacterial communities in the MGL block. Compared to the bacterial communities, the archaeal communities were much more conserved within blocks and were not affected by the variation in the bacterial communities. PMID:22432032

  5. Microbial communities in long-term, water-flooded petroleum reservoirs with different in situ temperatures in the Huabei Oilfield, China.

    Directory of Open Access Journals (Sweden)

    Yue-Qin Tang

    Full Text Available The distribution of microbial communities in the Menggulin (MGL and Ba19 blocks in the Huabei Oilfield, China, were studied based on 16S rRNA gene analysis. The dominant microbes showed obvious block-specific characteristics, and the two blocks had substantially different bacterial and archaeal communities. In the moderate-temperature MGL block, the bacteria were mainly Epsilonproteobacteria and Alphaproteobacteria, and the archaea were methanogens belonging to Methanolinea, Methanothermobacter, Methanosaeta, and Methanocella. However, in the high-temperature Ba19 block, the predominant bacteria were Gammaproteobacteria, and the predominant archaea were Methanothermobacter and Methanosaeta. In spite of shared taxa in the blocks, differences among wells in the same block were obvious, especially for bacterial communities in the MGL block. Compared to the bacterial communities, the archaeal communities were much more conserved within blocks and were not affected by the variation in the bacterial communities.

  6. The Status and Prospects of Enhancing Oil Recovery Technology for Waterflooding Oilfields in China

    Institute of Scientific and Technical Information of China (English)

    Shen Pingping; Yuan Shiyi

    1994-01-01

    @@ The water injection method has been used in most of oilfields in China even at the beginning of development, meanwhile the laboratory research on enhancing oil recovery (EOR) for these oilfields simultareously started too. Oilfields developed in 1960's have mostly been at a high watercut stage since 1990.Tasks in face of petroleum reservoir engineers are on the one hand, further improving recovery of waterflooding by integrated adjustments such as infill well drilling, water/oil ratio controlling, injection profile adjusting, etc. On the other hand, EOR techniques for waterflooding oilfields must be studied and applied to improve mostly the potential of underground resources and to increase recoverable reserves.

  7. 全谱饱和度测井在塔河碎屑岩储层评价中的应用%The Applications of Pulsed Neutron Spectrum Saturation Log to Clastic Rock Reservoir Evaluation in Tahe Oilfield

    Institute of Scientific and Technical Information of China (English)

    王勤聪; 马立新; 许克亮; 邹宁

    2013-01-01

    介绍全谱饱和度测井仪(PSSL)技术原理,对比不同脉冲中子测井仪器的优缺点,评价PSSL饱和度测井仪碳氧比组合中子寿命测井模式在塔河油田低孔隙度低渗透率储层中应用效果及PSSL俘获模式在凝析气藏储层中应用,通过PND俘获模式与PSSL俘获模式测井资料对比,评价仪器性能,分析时间推移测井应用.全谱饱和度测井能定量评价储层并可将储层进行精细划分;对于同一套地层,利用纵横向渗透率级差可以进行层内剩余油解释和评价.与传统脉冲中子测井对比,PSSL仪器使用范围宽,测井成本低,录取资料信息多,能有效反映储层剩余油饱和度的变化情况,为寻找潜力油层、识别水淹层提供了科学依据.%We discuss the technology principle of the PSSL(Pulsed Neutron Spectrum Saturation Log) logging tool.With comparing the advantages and disadvantages of different pulse neutron logging tool,we evaluate the application effect of Carbon-Oxygen Ratio combined capture modes of PSSL logging in low porosity reservoirs and capture mode of PSSL in condensate gas reservoir in Tahe oilfield.Through the logging data contrast and analysis of PND capture mode and PSSL capture mode,we evaluate the tool performance and analyze time lapse logging application.PSSL logging mode can quantitatively evaluate reservoirs and finely divide reservoirs; can interpret and evaluate residual oil by longitudinal and vertical permeability range in the same layer.Compared with traditional pulsed neutron logging,PSSL tool has wider applications,provides rich information and lower logging cost; it can reflect changes in the remaining oil saturation in reservoirs.It provides the basis for finding potential oil layers and identification of water out layers.

  8. New Technology of Optimizing Heavy Oil Reservoir Management by Geochemical Means: A Case Study in Block Leng 43, Liaohe Oilfield, China

    Institute of Scientific and Technical Information of China (English)

    ZHAO HONGJING(赵红静); ZHANG CHUNMING(张春明); MEI BOWEN(梅博文); S. R. LARTER; WU TIESHENG(吴铁生)

    2002-01-01

    Geochemical methods can be used to optimize heavy oil reservoir management. The distribution of some biomarkers in oils is different with the degree of biodegradation. Geochemical parameters can be used to predict oil viscosity and thus to preliminarily evaluate the difficulties involved in oil production. The results of viscosity prediction for oils from reservoir S2 3 in block Leng 43 and preliminary evaluation of oil production difficulty are consistent with the geological data.

  9. 旅大5-2油田储层敏感性实验评价%On the Sensitivity Evaluation of Luda 5-2 Oilfield Reservoir

    Institute of Scientific and Technical Information of China (English)

    刘璐

    2011-01-01

    旅大5-2油田的主力储层为东二上段,高孔高渗,粘土矿物绝对含量低。通过岩心敏感性流动实验,研究该储层潜在伤害因素。研究表明,速敏损害程度为无-弱,水敏损害程度总体弱至中等偏强,无酸敏损,碱敏损害为弱中等偏弱。%The main producing layer of Luda 5-2 oilfield is the second part of Dongying formation,which is of high porosity and permeability,low clay mineral absolute content.The author researches reservoir potential damage factors by the core sensitivity experiments.Results show that the speed sensitivity is from zero to weakness,the water sensitivity extent is from weakness to medium strong.There is no acid sensitivity,and the alkali sensitivity extent is from weakness to moderate weakness.

  10. The Result and Knowledge of the Putaohua Reservoir Old Well Reexamination in Weixing Oilfield%卫星油田葡萄花油层老井复查成果与认识

    Institute of Scientific and Technical Information of China (English)

    叶烨

    2013-01-01

    本次老井复查以测井解释标准的修订与完善为基础。对卫星油田葡萄花油层的含油性进行全面复查,共计复查测井曲线697口。本次复查紧密结合测井资料、试油结果和生产开发数据,寻找潜力层,落实补孔潜力。已达到对卫星油田挖潜增储的目的。%The old well reexamination is based on revising and improving the logging interpretation standard. Completely reexamine oil potential of Putaohua reservoir. Totally reexamine the well logging curve 697. It uses the data of logging, oil testing, dynamic analysis to find potential of the oil zones and implement perforation potential. It provides good reference experience for potential finding and increasing effect in weixing oilfield.

  11. Study on the connectivity of heavy oil reservoirs by ultraviolet spectrum technique in the western part of the QHD32-6 oilfield

    Institute of Scientific and Technical Information of China (English)

    XU Yaohui; CHEN Dan

    2008-01-01

    As a new method, the ultraviolet spectrum technique is applied to studying the connectivity of biodegradable heavy oil reservoirs. The similarity of crude oils can be judged according to the extinction coefficient (E)because aromatic hydrocarbons and non-hydrocarbons have conjugated bonds and obvious absorption in the ultraviolet range, and different materials have different characteristics and additives. The relationship diagram is made in terms of the extinction coefficients (E) of the samples by taking E as the Y-axis and wavelength as the X-axis. The connectivity of oil reservoirs is estimated according to the curve positions and characteristic fingerprints of the samples. The connectivity of part of the reservoirs in the western part of the QHD32-6 oilfieid was studied with this method. The results showed that the connectivity of samples from wells F7 and F8 in the Nm-2 oil reservoir zone is good, that of samples from wells F17 and F20 in the Nm-1 oil reservoir zone also is good, and that of samples from wells F17, F19, and F20 is poor.

  12. 中国东部W油田T区中浅层储层特征研究%Research on Middle-shallow Layer Reservoir Characteristics at T Area in W Oilfield in East China

    Institute of Scientific and Technical Information of China (English)

    董亚东; 范兴燕; 袁志云; 任涛; 肖高杰; 赵健

    2013-01-01

    W oilfield, located in the east of China, was characterized by its reservoirs' non-homogeneity. The reservoir sandstone developed irregularly, and its thickness, merely 3-20 meters, changes quickly in the field. In addition, the wave impedance characteristics of the sandstone and shale were similar in this district. It is difficult, or even impossible, to classify the sand and shale using the traditional reservoir inversion. According to the small layer division results and chose the favorable lithology sensitivity factors, the relationship between sensitivity curve with acoustic curve was build up and based on that the wave impedance inversion was done to the target layer again. Then the threshold values were marked on the cubic data of wave inversion . And the sand could be easily recognized from the three-dimensional perspective maps according to the threshold value. After that the reservoir distribution could be acquired directly . This results were proven by the drilling data and this method could be applied in this district also. Based on the regional structure evolution and the signal well facies, also the transition of the channel deposit is did preliminary analysed.%W油田位于中国东部;该油田存在多套河道砂.通过井上统计,该区砂体厚度纵向变化快,3-20 m不等;且砂泥岩在常规波阻抗上难于区分,常规储层预测方法难于区分.在细分层基础上,通过交会分析,选取岩性敏感因子,建立了敏感曲线与声波曲线的关系,通过重构曲线进行波阻抗反演.以此为基础,在波阻抗体上设定砂泥岩区分的门槛值.通过立体透视方法,大于砂岩阻抗值的定义为砂岩.通过变色显示,对T组各砂体的平面展布特征进行了定量刻画.通过对比分析,认为该方法与现有钻探结果吻合度较高,证明了该方法在本区的适用性.同时研究结合区域构造、单井相等资料,对该区河道沉积的变迁的期次进行了初步分析.

  13. Shengli Oil Fields: Today and Tomorrow

    Institute of Scientific and Technical Information of China (English)

    Lu Renjie

    1996-01-01

    @@ Shengli oil area lies in the Yellow River Delta, in the north of Shandong Province bordering the Bohai Bay. The area is scattered over 28 counties, covering 37 000 square kilom eters. The main part of exploration and exploitation is located on both sides of the Yellow River estuary within the territory of Dongying City.

  14. 塔河油田碳酸盐岩缝洞型油藏堵水效果地质影响因素%Geological factors influencing water shutoff effects of fractured-vuggy carbonate reservoirs in Tahe oilfield

    Institute of Scientific and Technical Information of China (English)

    荣元帅; 高艳霞; 李新华

    2011-01-01

    塔河油田主力油藏是受多期岩溶作用叠加改造、多期油气充注形成的碳酸盐岩缝洞型油藏,储集体非均质性极强,油水关系复杂,堵水效果整体较差.通过对塔河油田碳酸盐岩缝洞型油藏堵水效果地质影响因素分析后认为,油井储集体类型和油水分布模式是影响堵水效果最关键的地质因素.由于大型溶洞特别是高角度裂缝的存在,碳酸盐岩缝洞型油藏剩余油分布复杂,且分别易造成工艺上封堵难度大和堵死的现象,堵水效果较差.而裂缝-孔洞型储集体类似砂岩油藏,储层呈“似均质”状,堵水效果相对较好.与储集体类型相对应的似均质型油水关系模式以及表现出来的缓升型、台阶式上升型的含水率上升类型的油井,堵水效果好;同时致密段的存在提高了堵水效果.%The major reservoirs of Tahe oilfield consist of fractured-vuggy carbonates which underwent multiple stages of karstification and hydrocarbon charging. These reservoirs are of strong heterogeneity, complex oil-water contact and poor water shutoff effect. This study indicates that reservoir types and oil-water distribution patterns are the two key geological factors affecting water shutoff. The remaining oil distribution of the carbonate reservoirs of fractured-vuggy type is quite complicated due to the existence of big solution cavities, especially the high-angle fractures. The big solution cavities can make plugging water diffcult , while the high-angle fractures can easily result in complete shutoff, leading to poor shutoff effects. The fracture-vuggy reservoirs show quasi-homogeneity similar to sandstone reservoirs, thus their water shutoff effects are fair. Oil-water relationship pattern of quasi-homogeneous type corresponding to the reservoir types and wells with slowly-increasing or step-wise increasing water cuts have better water shutoff effects. Moreover, the existence of tight sections also can improve the

  15. 陆梁油田薄层底水油藏水平井井筒模拟研究%Study on the Horizontal Wellbore Model of Thin-layered Bottom-water Reservoir in Luliang Oilfield

    Institute of Scientific and Technical Information of China (English)

    许维娜; 石军; 颜江; 范赛华; 何长坡

    2013-01-01

      新疆陆梁油田呼图壁河组油藏发育一类特殊的薄层底水型油藏,其特点是油层厚度薄,构造幅度低,底水能量大,利用水平井开采,表现出无水采油期短、含水率上升速度快、产量递减大的特点。针对这些问题,采用水平井数值模拟方法,建立了考虑摩擦压力损失的水平井井筒模型,明确了摩擦压力损失对水平井的压力分布以及水平段产量的影响,在此基础上,分析研究了水平井底水锥进的水脊特征,判断了水平井出水位置,提出了封堵出水井段并结合油藏工程方法确定了水平井合理产液量,从而达到抑制底水快速锥进,减小压力损失,降低含水率上升速度的目的。%A special thin layer of bottom water reservoir has developed in Hutubi River Layer in Luliang Oilfield of Xinjiang. This kind of reservoir has thin thickness,small sand body amplitude and large bottom-water energy. Drilled with horizontal well,this kind of reservoir has possessed some characteristics such as short water free production period and water-cut with faster ascending velocity and big decline production. Aiming at solving these problems,we established the horizontal well-bore model which takes the pressure loss into consideration with the numerical simulation method,and obtained the pressure distribution of horizontal wells and the influence of horizontal section production due to the pressure loss. On this basis,we analyzed the features of water cresting characteristic of the horizontal well bottom water coning,and judged the location of water breakthrough in horizontal section. Finally,the paper suggests that the reasonable liquid production can be achieved by plugging the location of water breakthrough and using pump which has smaller diameter. Such method will control bottom water coning and decrease the pressure loss and reduce the water cut increasing rate.

  16. Argillaceous Dolostone Reservoir Characters and Porosity Interpreting Methods in Tanggu Oilfield%塘沽油田泥质白云岩储层特征及孔隙度解释方法

    Institute of Scientific and Technical Information of China (English)

    刘艳芬; 丁亚军

    2015-01-01

    塘沽油田古近系沙河街组沙三段5油组储油层为泥质白云岩,形成于断隆背景下的微咸—半咸、弱还原较深水湖相碳酸盐岩沉积环境,白云岩为次生交代成因,白云石含量低(65%),泥质含量高(30%),储层电性特征具有高自然伽马、高中子、低密度、中声波时差、低—中电阻率的特点,属中—高孔、低渗储层,储集类型为孔隙、裂缝双重孔隙介质,在岩心孔隙度分析资料较少的地区,有效孔隙度的解释方法成为储层评价及储量参数研究的难点.通过应用薄片、岩心物性分析资料及测井资料,采用了交会图、统计图等技术手段,开展了泥质白云岩岩性识别、储层特征研究、储层泥质含量及裂缝孔隙度、基质孔隙度的解释方法研究,为今后类似储层的评价研究提供了方法和依据.%The oil reservoir of five oil groups in the third member of Shahejie Formation of Paleocene in Tanggu Oilfield is argillaceous dolomites which developed in brackish, weak reductive and deeper lacustrine facies carbonate deposit environ-ment under the background of faulted uplift. Dolomite is of secondary replacement genesis, with low content of dolomite ( 65%) and high shale content ( 30%) . The electrical features of the reservoir are characteristic of high natural gamma, high neutron, low density, middle acoustic time difference, and low-middle resistivity. It has medium-high porosity and low permeability, and double porosity of pores and fractures. In the area with less data for core porosity analysis, the ap-proach for interpreting effective porosity becomes the difficult for reservoir evaluation and reserves parameters research. By applying thin slice and core property analysis data as well as logging data, we adopted such technical means as crossplot and statistical chart for interpretive method study on lithology identification of argillaceous dolostone, reservoir features, reservoir shale content and

  17. 裂缝性碳酸盐岩油藏裂缝网络的识别方法研究--以胜利油区F潜山油藏应用为例%Logging Identification Method of Fracture Network in Fractured Carbonate Reservoirs:An Application Example of F Buried Hill in Shengli Oil Field

    Institute of Scientific and Technical Information of China (English)

    张丽艳; 乌洪翠; 王敏; 王伟; 张孝珍

    2014-01-01

    提出了针对碳酸盐岩裂缝型储层的裂缝识别和类型判别方法:在对常规测井曲线进行小波多尺度分析的基础上,通过求取剩余曲线变化率,以消除岩性对测井曲线的影响,突出裂缝信号,提高常规测井对裂缝的分辨率;以岩心描述和成像测井所识别的裂缝类型为样本,以多测井参数为变量,运用主成分分析和Fisher判别等方法,建立裂缝类型的判别模型。此方法应用于胜利油区F潜山碳酸盐岩储层的裂缝类型判别,效果较好。%Based on the application of wavelet analysis to conventional logs, through extracting the residual logging gradient, the influence of lithology to logging curves can reduced for highlighting the fracture signs. As a results, the fracture resolution from conventional logging is improved. On the basis of core observation and description, combined with FMI information, different types of fractures are identified using geostatistics method. An identification method of fracture network is established by multi-logging parameters. The proposed identification method of fracture network has obtained good results in the application of identifying the types of fractures in carbonate reservoirs of F Burial Hill in Shengli Oil Field.

  18. Imaging technologies in oilfield applications

    Institute of Scientific and Technical Information of China (English)

    XIE C.G.; NORTH R.; WILT M.; ZHANG P.; DENACLARA H.; LEVESQUE C.

    2005-01-01

    In this paper, we describe some recent imaging technologies developed by Schlumberger for oilfield downhole multiphase flow production logging (PL) and cross-well electromagnetic (EM) survey applications. FloScan Imager (FSITM) has been introduced as a 3-phase oil/gas/water flow PL tool for deviated and horizontal wells. FSI sensors can map fluid velocity and holdup profiles along a vertical diameter of the wellbore at every survey depth, enabling a robust estimate of the individual phase flow rates in complex flow regimes. The cross-well EM survey is based on cross-borehole induction logging technique and provides resistivity distribution at a reservoir scale. It is a useful tool for reservoir management and is most effective in dynamic fields where fluid saturations are variable in time and space. The tool can be used to identify (water or steam) flooded and bypassed regions. By monitoring changes in the resistivity spatial distribution with time, cross-well EM survey is very effective at mapping inter-well temperature and structure. Some field examples are shown for both FloScan Imager PL tool and cross-well resistivity imaging survey.

  19. Approach to Karst Reservoir Types and Classification of Ordovician Carbonate in Tahe Oilfield%塔河油田奥陶系碳酸盐岩岩溶储集体类型及划分方法研究

    Institute of Scientific and Technical Information of China (English)

    康志宏; 戎意民; 魏历灵; 李雪; 陈夷; 陈琳

    2014-01-01

    塔河油田奥陶系油藏储集体类型的多样性和复杂性,给常规测井定量解释带来了很大困难。此类油藏储集体类型的划分和识别对油田开发极为重要。根据6口关键井的电成像测井(FMI)和岩心样品特征,将塔河碳酸盐岩储集体划分为未充填洞穴型、垮塌充填洞穴型、机械充填洞穴型和裂缝型4类。依据其中5口井的常规测井响应和4类储集体划分结果,选用 GR、RD、RS、K3(深浅侧向电阻率倒数差的绝对值)、AC、DEN 和 CNL 共7种测井信息作为神经网络的输入学习样本,经学习训练建立了储层划分的神经网络模型。通过检验井对比,说明基于神经网络模型,通过常规测井的多参数约束,可以判断岩溶型储集体类型。经本次研究,初步形成了储集体半定量评价标准。%tion in the Tahe areas 6 and 7.Real data processing has proved that this method is effective.Through the actual data processing proved that the conventional log multiparameter constraint can be used to judge karst reservoir type,and initially semi-quantitative evaluation standard is formed,showing preliminarily that the method of the neural network method based on the imaging logging is suitable for complex carbonate reservoir in Tahe oilfield.

  20. Water Flooding Development and Enhanced Oil Recovery of Daqing Oilfields

    Institute of Scientific and Technical Information of China (English)

    Cao Zefu; Yue Dengtai; Rong Jiashu

    1997-01-01

    @@ The Daqing oil region consists of typical sand oilfields formed by a large inland shallow water lake basin and riverdelta. It is characterized by multiple reservoirs, extreme heterogeneity, and insufficient natural oil reservoir energy. A comparatively long period of high stable yield and high efficiency recovery was achieved in the initial stage of development through the use of the hydraulic pressure drive technique, which manually injected water to maintain formation pressure.

  1. Research on Techniques for Rolling Exploration and Development and Application to Dongying Oilfield

    Institute of Scientific and Technical Information of China (English)

    Du Xiangyue; Sun Longde

    1995-01-01

    @@ The central anticlinal zone of Dongying Basin and Tong-Wang tectonic zone, subordinate to the Xianhe Oil Mine of Shengli Oilfield, are a composite tectonic belt, very complex in geology and diverse in oil pool types, with high oil and gas productivity, and also a very complex geologic body consisting of different strata and oil pools of different types and origins (Fig. 1). This situation made us to work out a complex and step-by-step continuous process of oil and gas exploration and exploitation,i.e. ,the rolling oil exploration and exploitation process.

  2. Optimized Drilling Technologies for Tight Sandstone Reservoirs in Canada Daylight Oilfield%加拿大 Daylight 油田致密砂岩油藏优快钻井技术

    Institute of Scientific and Technical Information of China (English)

    侯立中; 谈心; 曲洪娜

    2014-01-01

    为经济高效地开发致密砂岩油藏,并为国内同类型油气田开发提供借鉴,进行了Daylight油田优快钻井技术研究。对Daylight油田地层岩性进行了研究,根据地层压力优化了井身结构;通过分析测井资料并结合统计数据,研制了个性化的钻头;在分析钻井技术难点、地层压力的基础上,研制了油基钻井液体系,并采取严格措施确保其性能稳定;采取防碰技术控制井眼轨迹,满足了井工厂钻井的要求;优选先进的井下工具进行配套应用。该油田油气井井身结构按地区简化为二开和三开2种;研制了适应该地区软硬交错地层的复合钻头;油基钻井液体系为井壁稳定提供了保障;提前防碰技术缩短了滑动钻进时间;振荡钻井技术和AGITATOR井下工具可以解决水平井钻井中的托压问题,黑匣子为分析钻柱涡动提供了数据支持。应用结果表明,同地区平均井深为3000 m的井,平均钻井周期由原来的18 d缩短为8 d。Daylight油田优快钻井技术研究为快速钻井提供了保证,为国内致密油藏开发提供了技术参考。%In order to develop tight sandstone reservoirs economically and efficiently ,and provide refer-ences for development of similar oil and gas fields ,the drilling technologies in Canada Daylight Oilfield have been investigated .By analyzing main affecting factors on optimized drilling technologies ,some important a-chievements have been obtained ,including casing program optimization on the basis of formation pressure ;specific bit developed through logging data analysis and statistics ;oil-base drilling fluid system developed through the analysis of drilling troubles and formation pressure ,and anti-collision drilling techniques were taken to control wellbore trajectory ,so as to meet the requirement of well factory drilling ;Optimization of advanced downhole tools for matching application ;wellbore structures

  3. High Efficiency to Develop in Cainan Oilfield

    Institute of Scientific and Technical Information of China (English)

    Zhao Lichun; Sun Chuansheng; Chen Gengwen

    1994-01-01

    @@ Introdution Cainan Oilfield is located in the desert area,eastern Junggar Basin, with regional structure scattering over the slope zones in central uplift of the basin. In May 1990, commercial oil and gas flow was discovered in Well Cainan-2, and further prospecting obtained oil-bearing area of 57. 2 km2with reserves 62. 52 million tons. Jurassic reservoir is braided-river deposit, whose main oil-bearing lithology is middle fine grained sandstone. Sangonghe and Xishanyao Formation have average porosities of 19% and 15% respectively, and are bounded in the same pressure system. Sangonghe Formation has the saturation degree of 71. 3%.

  4. GIANT OILFIELD DISCOVERED IN BOHAI

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ PetroChina announced a discovery of a giant oilfield in the beginning of May, which has a reserve of one billion tons, or about 7.35 billion barrels, the largest discovery in China over four decades. Of the reserves, the basically proven oil in place is 405 million tons with the average thickness of oil formations ranging between 80 meters and 100 meters. The oilfield lies in the Nanpu block of PetroChina Jidong Oilfield Company in Caofeidian industrial zone, north China's Hebei province. The area is expected to enjoy a better chance of becoming a national oil strategic reserve base following the discovery of the Nanpu Oilfield.

  5. A Developing Dagang Oilfields

    Institute of Scientific and Technical Information of China (English)

    Yao Heqing

    1996-01-01

    @@ Dagang Oilfield Group Ltd.Company (Dagang Oilfields),which is renamed from the former Dagang Petroleum Administration Bureau, is a supergiant petroleum exploration and development complex enterprise under China National Petroleum Corporation (CNPC).Its exploration and development area is composed of three parts -- onshore area, beach and shallow sea (with a depth within five meters). This area, with an 18 600 square meters area,rich in hydrocarbon generation and accumulation, covers the central, southern onshore and offshore parts of Huanghua Depression, the eastern part of Cangxian Uplift and the northern onshore part of Chengning Uplift. A total of 23 second-class structural belts have been so far discovered with 21 oil and gas fields of different types.

  6. Fast Growing Changqing Oilfield

    Institute of Scientific and Technical Information of China (English)

    Chen Licheng

    2005-01-01

    @@ Ordos Basin, the second largest sedimentary basin located in central China with an area of 250,000 square kilometers, spreads over 5 provinces including Shaanxi,Gansu, Ningxia Hui Autonomous Region, Inner Mongolia Autonomous Region and Shanxi. As one of China's major energy resource bases, Ordos Basin contains abundant petroleum resources. Changqing oilfield located in Ordos Basin has long been the key exploration area of China National Petroleum Corporation (CNPC).

  7. Geochemical Characteristics of Oilfield Waters from the Turpan Depression,Xinjiang and Their Petroleum Geological Significance

    Institute of Scientific and Technical Information of China (English)

    李伟; 陈晓红; 等

    1996-01-01

    This paper,based on the fundamental inorganic chemical and organic geochemical characteristics of oilfield waters from the Turpan Depression,presents the contents of organic matter,the distribution of low-carbon fatty acids and the contents of aromatic hydrocarbons as well as their principal ultraviolet absorption spectral and fluorescence spectral characteristics in oilfield waters from different oil/gas-bearing areas.The oil/gas reservoirs in this depression are classified in terms of their conserving conditions.In additon,the paper also discusses the chemical characteristics of oilfield waters from different types of oil/gas reservoirs with an emphasis on the characteristics of their localization in the γNa/γCa-γN a/γCl correction diagram.On this basis it is attempted to expound the fundamental geochemical characteristics of oilfield waters from the Turpan Depression and their geological significance.

  8. Types of Sandstone Reservoir Diagenetic Facies and Microscopic Pore Structure Characteristics of Chang 8 1 Reservoir in Huaqing Oilfield%华庆油田长81储层成岩相类型及微观孔隙结构特征

    Institute of Scientific and Technical Information of China (English)

    任大忠; 孙卫; 魏虎; 周树勋; 张一果; 张茜

    2014-01-01

    In order to characterize the diagenetic facies and microscopic pore structure characteristics of low/ul-tra-low permeability sandstone reservoir in Chang 8 1 segments of Huaqing Oilfield,this paper discusses the dia-genetic process,cement type of each diagenetic facies,pore evolution,the effect of pore structure on the physi-cal property and fluid seepage characteristics.On the background of reservoir sedimentary characteristics,the test analysis methods are used and the testing oil exploration results for dynamic data validation is made,such as,physical property,casting lamella,scanning electron microscope (SEM),conventional pressure mercury, image pore,X-ray diffraction,oil-water relative permeability.Establishing the reservoir evolution frame in time and space:deposition (sedimentary facies)-diagenesis (diagenetic facies)-pore evolution are the controls of microscopic pore structure of reservoir physical property and seepage characteristics.Different diagenetic facies type have both constructive and destructive dual effects,specificing in the degrees of differences of compaction, cementation,function,dissolution.The qualitative analysis and quantitative description of indoor experiment of diagenetic facies microscopic pore structure have a consistency with testing for oil exploration results and experi-mental data.It is pointed out that the diagenetic facies and microscopic pore structure characteristics of this kind of reservoir can predict and evaluate favorable space.Chang 81 reservoir underwater distributary channel micro-facies with chlorite lining edge residual pore-dissolution phase combination of intergranular pore development is the most favorable reservoir belt.Pore of forced compaction-carbonate +illite cementation facies association is damaged too seriously to be an invalid reservoir zone.%为探讨华庆油田长81储层成岩相类型及相内微观孔隙结构特征,在储层沉积特征背景上,开展物性、铸体薄片、扫描电镜、

  9. Applications of Oilfield Produced Formation Water for Fracturing Fluid

    Directory of Open Access Journals (Sweden)

    Kehinde S. Bankole

    2014-03-01

    Full Text Available Oilfield produced formation water containing complex mixture of Dissolved Solid Compounds (DSC, including sodium, boron, chloride, magnesium, potassium, calcium, barium, iron and other salts is used in this research with the objective to develop stable and degradable cross linked fracturing fluid useful in both oil and gas producing reservoirs. As a result of recent increasing interest in horizontal drilling and hydraulic fracturing operations, large volume of produced and/or flow back water containing complex mixture of organic and inorganic compounds is generated in the oilfield during the oil and gas recovery operations. Independently owned to larger oil and gas producing operators manage the generated oilfield produced water by one or more of the strategies, which include disposal, re-use and recycling of the produced water. However, large water consumption and strict environmental disposal issues associated with hydraulic fracturing treatment, combined with industry growth, are generating a crucial need for developing a good viscosity and reliably stable cross linked fracturing fluid systems, useful for transporting propping agents into the fracturing zones at moderate to high temperature range using the generated oilfield produced water. Presented in this study are the results of rheology and residue analysis of fracturing fluid systems prepared with oilfield produced formation water from a broad spectrum of geologic basins. The rheology studies were conducted to measure viscosity under a nitrogen pressure of >400 Psi and temperature window of 210-260F. The guar residue analysis test was performed with series of gel breakers at 185°F. The fluid systems presented provide proof of concept of the ability to crosslink and degrade cross linked fluids to below 100 cP at shear rate of 100/sec under the considered treating down hole conditions. Data presented provide guidance for the potential use of generated oilfield produced water as source

  10. 塔河油田奥陶系缝洞型储层小型缝洞及其充填物测井识别%Identification of small fracture-vugs and their fillings through log interpretation in fractured-vuggy Ordovician reservoirs in Tahe oilfield

    Institute of Scientific and Technical Information of China (English)

    田飞; 金强; 李阳; 张宏方; 张文博

    2012-01-01

    塔河油田是以奥陶系碳酸盐岩古岩溶油藏为主的古生界海相大油田,洞穴和其周缘的裂缝是其主要储集空间.由于数量众多,小型缝洞成为缝洞型储层的重要储集空间和渗流通道.小型缝洞可以在露头、岩心和成像测井上识别,但在非取心和非成像测井段还不能有效识别,影响了油藏地质模型的建立.利用岩心和成像测井资料标定常规测井信息,优选出5个洞穴敏感参数和3个裂缝敏感参数,建立了塔河油田小型缝洞归一化加权识别函数,并利用DEN-Vsh和RLLD-Vsh交会图版识别出了洞穴充填物类型:碎屑充填物、垮塌角砾岩和化学充填物.识别效果与岩心及FMI成像对比,洞穴符合率超过81%,裂缝符合率超过82%,洞穴充填物识别成功率超过84%,基本满足了小型缝洞识别要求.利用此方法对塔河油田117口井进行了识别,结果显示该方法也适用于洞高在0.5m以上的缝洞及充填物识别,并提高了识别精度,为精细研究古岩溶缝洞型储层提供了新方法.%Tahe oilfield is a famous marine Paleozoic giant oilfield dominated by paleokarstic reservoirs of the Or-dovician carbonates. Caverns and fractures around them are the main pore space. Numerous small fracture-vugs act as important pore space and and flowpaths. Although the small fracture-vugs can be recognized on outcrops, cores and image logs, they are not readily recognizable in intervals without core and image logging data, seriously influencing the study of fractured-vuggy reservoirs and the establishment of accurate reservoir geological model. To tackle the problem, we calibrated the conventional logging data with cores and image logs and selected five vug-sensitive parameters and three fracture-sensitive parameters. These parameters were used to build a normalized and weighted function for identification of small fracture-vugs in Tahe oilfield. We used DEN-Vsh ,RLLD-Vsh cross plot method to

  11. Development of the Extra-low Permeability Oilfield of Ansai

    Institute of Scientific and Technical Information of China (English)

    Hu Wenrui

    1995-01-01

    @@ Reservoir Characteristics Ansai Oilfield is located in Ordos Basin. Its regional structure is a large westward-dipping monocline with dip angle less than 1°. The main producing interval is in Yanchang formation,Triassic, and the depositional environment is a delta deposit of inland fresh water lake. This oilfield is distributed in distributary channel sandstone of delta plain,front underwater distributary channel sandstone and front river mouth bar sandstone of flowershape. Lithologic trap is the primary trap type and shows complex rhythm with average reservoir thickness of 11 to 15 m and Average porosity of 11% to14%. It is fine grained and well sorted sandy arkose. The cementing material is predominantly secondary chlorite, secondary laumontite and calcite with content of 11% to 14%.

  12. Electromagnetic Measurements in an Active Oilfield Environment

    Science.gov (United States)

    Schramm, K. A.; Aldridge, D. F.; Bartel, L. C.; Knox, H. A.; Weiss, C. J.

    2015-12-01

    An important issue in oilfield development pertains to mapping and monitoring of the fracture distributions (either natural or man-made) controlling subsurface fluid flow. Although microseismic monitoring and analysis have been used for this purpose for several decades, there remain several ambiguities and uncertainties with this approach. We are investigating a novel electromagnetic (EM) technique for detecting and mapping hydraulic fractures in a petroleum reservoir by injecting an electrically conductive contrast agent into an open fracture. The fracture is subsequently illuminated by a strong EM field radiated by a large engineered antenna. Specifically, a grounded electric current source is applied directly to the steel casing of the borehole, either at/near the wellhead or at a deep downhole point. Transient multicomponent EM signals (both electric and magnetic) scattered by the conductivity contrast are then recorded by a surface receiver array. We are presently utilizing advanced 3D numerical modeling algorithms to accurately simulate fracture responses, both before and after insertion of the conductive contrast agent. Model results compare favorably with EM field data recently acquired in a Permian Basin oilfield. However, extraction of the very-low-amplitude fracture signatures from noisy data requires effective noise suppression strategies such as long stacking times, rejection of outliers, and careful treatment of natural magnetotelluric fields. Dealing with the ever-present "episodic EM noise" typical in an active oilfield environment (associated with drilling, pumping, machinery, traffic, etc.) constitutes an ongoing problem. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the US Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.

  13. Reservoir

    Directory of Open Access Journals (Sweden)

    M. Mokhtar

    2016-12-01

    Full Text Available Scarab field is an analog for the deep marine slope channels in Nile Delta of Egypt. It is one of the Pliocene reservoirs in West delta deep marine concession. Channel-1 and channel-2 are considered as main channels of Scarab field. FMI log is used for facies classification and description of the channel subsequences. Core data analysis is integrated with FMI to confirm the lithologic response and used as well for describing the reservoir with high resolution. A detailed description of four wells penetrated through both channels lead to define channel sequences. Some of these sequences are widely extended within the field under study exhibiting a good correlation between the wells. Other sequences were of local distribution. Lithologic sequences are characterized mainly by fining upward in Vshale logs. The repetition of these sequences reflects the stacking pattern and high heterogeneity of the sandstone reservoir. It also refers to the sea level fluctuation which has a direct influence to the facies change. In terms of integration of the previously described sequences with a high resolution seismic data a depositional model has been established. The model defines different stages of the channel using Scarab-2 well as an ideal analog.

  14. TX, OK, NM- Oilfield pollution

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Open oilfield pits and tanks as well as a proliferation of production saltwater spills continue to impact migratory birds and other resident fish and wildlife...

  15. Computer Application in Daqing Oilfield

    Institute of Scientific and Technical Information of China (English)

    Li Manfu

    1994-01-01

    @@ Daqing is the first oilfield of CNPC, where computer was the earlist application in China's oil industry. From 1961 to present, it underwent four generations in evolution and application of computer there.

  16. Produce reserves from shallow reservoirs under surface pressure-summing zones by large drill platform in Fuyu oilfield-a case in Chengping 12 block%利用浅层大平台钻井技术挖潜扶余油田压覆区储量——以城平12区块为例

    Institute of Scientific and Technical Information of China (English)

    何增军; 林燕萍; 李桂娟; 张莉; 王鑫

    2012-01-01

    Fuyu oilfield development has been affected by its special geographical conditions of surface pressure-summing zones which have led to poor well conditions, imperfect well pattern, big difficulty in potential tapping, and ineffective reserves recovery. This paper takes the reservoir in Chengping 12 block as an example to study the application of large drill platform technology for drilling horizontal wells in shallow reservoirs of Fuyu oilfield. The technology has been successfully applied to confined surface condition and has fully produced the reserves. This study provides a solid basis for increasing recoverable reserves and stabilizing oil production for the " twelfth five-year plan" .%地面压覆区的特殊地理条件造成了油水井井况差、井网不完善、措施挖潜难度大、储量无法有效动用等现状,影响了扶余油田的综合调整.针对此问题,以城平12块油藏为例,开展了浅层大平台水平井技术在扶余油田的试用研究.该项技术在有限的地面条件下得到了成功应用,地下储量得到充分动用.该研究为扶余油田增加可采储量、实现“十二五”稳产奠定了坚实基础.

  17. Diagenesis and The Porosity Evolution Analysis of Chang 2 Reservoir in Resiwan Oilfield,Ordos Basin%鄂尔多斯盆地子长油田热寺湾油区长2储层成岩作用及孔隙度演化定量分析

    Institute of Scientific and Technical Information of China (English)

    宋珈萱; 弓虎军; 王永东; 杨燕; 马晓玲

    2016-01-01

    通过扫描电镜、铸体薄片以及X射线衍射等分析化验资料,对子长油田热寺湾油区长2储层的成岩作用及孔隙度演化进行分析研究,揭示了储层物性及孔隙演化的主要控制因素。研究表明:热寺湾油区长2储集层属于低孔特低渗油气储集层,主要发育原生粒间孔隙及次生溶蚀孔隙。孔隙度演化定量计算结果表明,原始孔隙度平均值为35.29%,成岩作用过程中,受压实作用损失的孔隙度平均为22.01%,受胶结作用损失的孔隙度平均为4.13%。研究区长石、岩屑等矿物溶解作用强烈,溶蚀作用增加孔隙度平均为2.73%,最终孔隙度为11.70%。造成孔隙度损失的主要成岩作用为压实作用。%The scanning electron microscope( SEM),casting thin-sections and X-ray diffraction were used to ana-lyze the diagenesis and the porosity eVolution of the Chang 2 reserVoir in Resiwan oilfield,Ordos basin. The study suggests that Chang 2 reserVoir of Resiwan oilfield is the low-porosity and ultra-low permeability reserVoir type,the main pore types of the reserVoir are primary intergranular pores and secondary dissolution pores. The result of the e-Volution of porosity parameters indicates that the aVerage primary porosity is 35 . 29%. During the diagenesis process,the lost porosity of compaction and cementation are 22. 01% and 6. 40% respectiVely. Strong dissolution had been obserVed in study which added an aVerage porosity of 2 . 73%,making the final porosity increased to 11 . 90%. Compaction is the predominating cause of the porosity loss.

  18. Characteristics and genesis of reservoir spaces in Neocene reef reservoir of Liuhua Oilfield,Pearl River Mouth Basin%珠江口盆地流花油田新近系生物礁灰岩储层特征及成因分析

    Institute of Scientific and Technical Information of China (English)

    古莉; 胡光义; 罗文生; 倪军娥; 梁卫; 吴亚生; 梅冥相; 陆嫣

    2012-01-01

    南海珠江口盆地东沙隆起流花油田新近系灰岩储层为典型的台地边缘生物礁储层。岩石类型包括皮壳状珊瑚藻黏结灰岩、缠绕状珊瑚藻-珊瑚骨架灰岩、泥晶有孔虫-珊瑚藻颗粒灰岩、亮晶有孔虫-珊瑚藻颗粒灰岩、含红藻石灰岩、泥晶珊瑚颗粒灰岩、生屑泥晶灰岩7类。孔缝类型丰富,包括泥晶基质溶孔、粒间溶孔、藻架溶孔、粒内溶孔、铸模孔、体腔孔、晶间微孔7类孔隙及溶蚀缝、珊瑚藻皮壳间隙缝、似缝合线溶蚀缝、构造缝4类裂缝。划分了孔洞-网状裂缝型、孔隙型、裂缝-孔洞型、致密裂缝型4种储集类型。皮壳状珊瑚藻灰岩属于孔洞-网状裂缝型储层,泥晶颗粒灰岩、含红藻石灰岩和红藻石灰岩属于孔隙型,珊瑚骨架灰岩属于裂缝-孔洞型,亮晶生屑灰岩和胶结作用较强的皮壳状藻灰岩属于致密裂缝型。沉积微相和成岩作用控制了不同储集类型的分布,生物礁形成过程中的多期暴露对沉积微相和储集空间有重要影响。沉积-成岩演化过程划分为早期成礁与早期暴露、晚期成礁与次级暴露、埋藏压实与泥岩再造水改造阶段、两期成藏与地下水溶蚀4个阶段。根据沉积-成岩演化分析,预测了研究区储集类型空间分布。%The reservoir of Liuhua oilfield,which belongs to Zhujiang Formation,is a typical Neocene platform-rim reef located on the margin of carbonate platform of Dongsha Massif in Pearl River Mouth Basin,South China Sea.There are 7 types of rocks,including crusty algal boundstone,twined algal-coral framestone,foraminifer and algal grainstone and rhodolite reef limestone.The reservoir spaces include 7 types of pores and 4 types of fractures.The main pores include primary intergranular pores,pores in algal frames,intragranular dissolved pores,cavity pores and intercrystalline micropores.The main fractures include dissolution fractures,interlayer fractures

  19. Development Techniques of Zaoyuan Oilfield

    Institute of Scientific and Technical Information of China (English)

    Yang Tianji

    1995-01-01

    @@ Situation of the Oilfield Zaoyuan Oilfield located in Cangxian County of Hebei Province is a main production oilfield of Dagang Petroleum Administration Bureau. Its structure location is in the center of Kongdian Uplift and at two sides of Kongxi Fault. The main oil-bearing sequences of the oil field are No. 1 and 2 formations of Tertiary Period and andesite formation of Mesozoic with buried depth of 1 700- 3 050 m, composed of Zilaitun,Fenghuadian and Shenjiapu oil-bearing structures (Fig. 1). The industrial oil flow was firstly obtained from Kong well No. 17 in Zaobei area in 1971,which was put into development in 1978. By the end of 1992,the proven oil-bearing area was 48. 1 km2,original oil in place 147 million tons ,developed producing oil-bearing area 21.6 km2,and proven producing reserves in place 60 460 000 tons.

  20. Alloy 718 for Oilfield Applications

    Science.gov (United States)

    deBarbadillo, John J.; Mannan, Sarwan K.

    2012-02-01

    Alloy 718 (UNS N07718) was developed for use in aircraft gas turbine engines, but its unique combination of room-temperature strength and aqueous corrosion resistance made it a candidate for oilfield fasteners, valves, drill tools, and completion equipment. As well environments became more severe, stress corrosion and hydrogen embrittlement failures in production equipment drove the evolution of the composition and microstructure that distinguish today's oilfield-grade 718 from aerospace grades. This paper reviews the development of the grade and its applications and describes some of its unique characteristics, testing, and manufacturing methods as well as newer alloys designed for high-pressure high-temperature (HPHT) conditions.

  1. Synthesis and application of magnetic chitosan nanoparticles in oilfield

    Science.gov (United States)

    Lian, Qi; Zheng, Xuefang

    2016-01-01

    The novel magnetic Co0.5Mn0.5Fe2O4-chitosan nanoparticles has the advantage of excellent biodegradation and a high level of controllability. The Co0.5Mn0.5Fe2O4-chitosan nanoparticles was prepared successfully. The size of the Co0.5Mn0.5Fe2O4-chitosan nanoparticles were all below 100 nm. The saturated magnetization of the Co0.5Mn0.5Fe2O4-chitosan nanoparticles could reach 80 emu/g and showed the characteristics of superparamagnetism at the same time. The image of TEM and SEM electron microscopy showed that the cubic-shape magnetic Co0.5Mn0.5Fe2O4 particles were encapsulated by the spherical chitosan nanoparticles. The evaluation on the interfacial properties of the product showed that the interfacial tension between crude oil and water could be reduce to ultra-low values as low as 10-3 mN/m when the magnetic Co0.5Mn0.5Fe2O4-chitosan nanoparticle was used in several blocks in Shengli Oilfield without other additives. Meanwhile, the magnetic Co0.5Mn0.5Fe2O4-chitosan nanoparticles possessed good salt-resisting capacity.

  2. 火电厂锅炉烟气捕集CO2用于油田驱油工业化试验%Research on boiler flue gas capture carbon dioxide in the power plant for industrial oilfield flooding test

    Institute of Scientific and Technical Information of China (English)

    杨志泉; 杨龙举

    2015-01-01

    为了解决油田强化采油所需的CO2来源和减少火电厂烟气中CO2的排放污染,保护环境,胜利油田在其自备发电厂建成了用化学法捕集CO2工业化示范工程,用于油田“低渗透油藏驱油”先导试验。该试验取得成功,使CO2变废为宝,实现了驱油效益与环境效益双赢,为我国碳减排和资源化利用探索了一条有效的途径,对油田和火电厂均有借鉴意义。%In order to solve the required source of CO2 enhanced oil production and reducing power plant emis-sions of CO2 pol ution,protect the environment,Shengli oilfield in the self-provided power plant is built by using the chemical method to capture CO2 industrialization demonstration project,used in oil fields in the low permea-bility reservoirs flooding pilot test,to be successful,make the CO2 ,waste oil displacement efficiency and environ-mental benefits win-win,for carbon emission reduction and resource utilization in our country to explore an ef-fective way,has the reference value to oilfield and fossil power plant.

  3. Development adjustments: a case of an offshore heavy oilfield

    Energy Technology Data Exchange (ETDEWEB)

    Chen Peng; Tian Ji; Zhang Guoxiang

    2007-07-01

    The JZ9-3 Oilfield, operated by CNOOC limited in the northeast of the Bohai bay, has been put on production since 1999. Though there are some disadvantages in development, such as the gas cap, the weak nature energy, the thin oil-bearing formation and bottom water in some layers, the oilfield developed well by cold waterflooding. To date over 14% of its OOIP has been recovered and its production was continually improved. Since the high cost operation on offshore, few adjustments were taken in these fields. From the beginning of development, many adjustments were taken in the JZ9-3 oilfield, such as the adjustment of production layers, the well converting, the satisfaction control and the adjustment wells. These activities hold up the increasing rate of water cut, improved the oil production and make good profits. The integrate research of geology and reservoir, the sufficient well testing/logging activities and the reliable engineering operation gave solid foundations for these adjustments. (auth)

  4. A Sand Control System for Light Oil Reservoir

    Institute of Scientific and Technical Information of China (English)

    Xiang Yuzhang

    1996-01-01

    @@ Over 30-year water flooding in light oil sandstone reservoirs with loose argillaceous cement in Karamay oilfield results in severe sand production, varying from well to well with the different date of well completion.

  5. Research on Composite Fracturing Technology in Qiaokou Oilfield, Dongpu Depression

    Institute of Scientific and Technical Information of China (English)

    呼舜兴; 侯平舒

    2003-01-01

    Limited by serious heterogeneity both horizontally and vertically, water driving of low-permeability layers in Qiaokou oilfield appears to be very difficult. As the classⅠ layer reaches the stage of high water-content too early, the level of exploitation became worse with low-recovery. Regarding the serious heterogeneity and low recovery in layers class Ⅱand Ⅲ, composite fracturing technology suitable for this kind of reservoir was applied. Its basement was a lab study of indoor water driving efficiency and fracturing experiment. Perfect result has achieved by using the technology.

  6. China's Giant Oilfields: Discovered & to Be Discovered

    Institute of Scientific and Technical Information of China (English)

    Li Xiaodi

    2006-01-01

    @@ World oil production and reserve additions heavily depend on giant oilfields. Currently, there are more than 4,000 producing oilfields in the world, producing around 68 million barrels of oil per day. Most oilfields in the world are minor ones, with oil production below 20,000barrels per day; only 3% (about 120) oilfields in the world produce over 100,000 barrels per day with overall daily production exceeding 32 million barrels, which accounts for 47% of the total world oil supply [1].

  7. Advances in China's Oil Reservoir Description Technique

    Institute of Scientific and Technical Information of China (English)

    Mu Longxin; Huang Shiyan; Jia Ailin; Rong Jiashu

    1997-01-01

    @@ Oil reservoir description in China has undergone rapid development in recent years. Extensive research carried out at various oilfields and petroleum universities has resulted in the formulation of comprehensive oil reservoir description techniques and methods uniquely suited to the various development phases of China's continental facies. The new techniques have the following characteristics:

  8. 3D Geologic Modeling Technology of Complex Fault-block Reservoirs---A Case of An Overseas Oilfield%复杂断块油藏的三维地质建模方法--以国外某油田为例

    Institute of Scientific and Technical Information of China (English)

    金春玉; 宋扬

    2015-01-01

    随着油气勘探开发的不断深入,一些具有复杂断块构造特征的油藏已逐渐成为开发的主体目标。建立精准的复杂断块油藏三维地质模型对指导油田开发有着重要的意义。三维地质建模技术能够更细致、准确地研究地下的油藏,为油藏的后续开发提供可靠的地质依据。以国外某油田断块构造发育区块为研究对象,针对研究区地质条件复杂、断层发育的特点,以地质、地震、测井资料为基础,搭建构造框架模型,应用地质统计学理论建立储层岩相及物性参数模型,揭示构造和储层空间分布特征,最终建立一个三维定量的油藏地质模型,在储层计算中各断块误差均小于5%,符合精度要求。该模型将为该区块数值模拟和井位设计等后续工作提供可靠的地质依据,同时也为同类复杂断块油藏的三维地质建模提供借鉴。%With the development of oil and gas exploration,some complex fault-block reservoirs have be-come the main objective.3D geologic modeling of complex fault-block reservoirs is an important significance to guide oilfield development.Study on underground reservoirs,3D geologic modeling technology is more particular and accurate,which supplies reliable data for future development.Study on an overseas oilfield which has the complex fault-block,the geologic condition of the complex fault-block is complex.Based on geological,seismic and logging data,the structural modeling had been built.The lithofacies modeling and physical property modeling had been built by geostatistics theory which reveal the structural attitude and spatial distribution.3D geologic modeling of the block had been built at last.The results showed that the reserves error of these fault-blocks were within 5%,which meet the requirement.The 3D geologic modeling of the block will provide reliable geological basis for the numerical simulation and the location and so on, and provide

  9. Diversification Develops Rapidly in Henan Oilfields

    Institute of Scientific and Technical Information of China (English)

    Sun Qiao

    1997-01-01

    @@ During the 12 years ( 1985-1996 ),diversification in Henan oilfields produced altogether 3.25 billion yuan of output value,including over 2.9 billion yuan of sales income, more than 400 million yuan of fixed assets, over 230 million yuan of profit tax, and over 400 million yuan born as wages for the oilfields.

  10. 二连盆地阿南低渗透火山碎屑砂岩油藏储层特征及其对开发的影响%Reservoir characteristics of low-permeability pyroclastic sandstones and their influences on petroleum development in A'nan oilfield of Erlian Basin

    Institute of Scientific and Technical Information of China (English)

    梁官忠; 姜振学; 刘忠; 尹志军; 申保华; 马俊恒

    2013-01-01

    The reservoir rocks of A' nan sandstone oilfield are dominated by feldspar lithic sandstone, and are proximal subaqueous fan deposits with prominent influences of volcanic activity.They feature in high content of pyroclastic debris and tufaceous cements,low composition maturity and structure maturity.Although their burial depth is shallow, epidiagenesis such as compaction and cementation are intense, leading to the poor development of primary porosity.As the major secondary pores,the dissolution pores feature in micro-pore throat and poor sorting of pore throat, resulting in poor storage capacity and permeability.Therefore, A' nan oil reservoir is typical low permeable pyroclastic sandstone reservoir.The pore structure deteriorates during water flooding due to various factors such as water sensitivity and velocity sensitivity.As a result,the displacement-pressure increases, while water-free oil recovery and ultimate oil displacement efficiency decrease.During waterflooding, water injection pressure increases continuously, and pressure buildup is significant, but well deliverability is commonly low.Several measures such as layer-subdivision and infill drilling are carried out to improve oilfield development.%阿南砂岩油藏储集岩以长石岩屑砂岩为主,属近源快速沉积的水下扇砂体,且沉积时受火山活动影响明显.岩石中火山成因岩屑及凝灰质胶结物含量高,岩石成分成熟度和结构成熟度均较低,储集体具有埋藏浅但压实作用、胶结作用等成岩后生作用强烈的特点,导致油层原生孔隙不发育,主要发育次生溶孔.孔喉以微喉为主,吼道分选差、储渗能力较弱,油藏具有典型的低渗火山碎屑砂岩油藏特征.油藏注水开发后,由于水敏和速敏等因素的影响,孔隙结构进一步变差,油层驱替压力上升,无水采收率和最终驱油效率下降,油藏注水开发表现出注水压力不断上升、地层憋压现象明显但油井供液能力普

  11. 尼日尔三角洲盆地Akpo油田新近系深水浊积水道储层构型表征%Characterization of reservoir architectures for Neogene deepwater turbidity channels of Akpo oilfield, Niger Delta Basin

    Institute of Scientific and Technical Information of China (English)

    赵晓明; 吴胜和; 刘丽

    2012-01-01

    由于深水浊积水道油藏多位于深海区,受作业成本的限制,其开发井距往往较大,利用现行的针对密井网区的多井模式拟合方法进行该类油藏的地下储层构型表征,其精度较低.为此,利用西非尼日尔三角洲盆地深水区Akpo油田稀井条件下的钻井与地震资料,提出了基于井-震联合的该区深水浊积水道储层构型表征技术,论述了其表征思路与方法.深水浊积水道储层构型可分为水道体系、复合水道和单一水道3个层次,其中复合水道层次又可细分为复合水道系列和复合水道2个亚层次,不同层次构型单元规模差异大,需要在构型模式指导下,分别开展基于油组、小层及小层内部切片的井-震联合,将不同层次的构型模式与钻井、地震资料进行拟合,完成深水浊积水道的储层构型表征.这一研究不仅对高效开发深水浊积水道油藏具有实用价值,对利用井-震联合方法开展储层构型研究也具有重要参考价值.%Deepwater turbidity channel reservoirs are usually located in deep sea areas, where a distant spacing pattern for development wells is often allocated due to the cost constraint of prospecting operation. Consequently, the characterization of such underground reservoir architectures of deepwater turbidity channels with the current overlay method for multi-well models used mainly under dense-well pattern conditions usually achieves a poor precision. Therefore, based on drilling and seismic data of a distant well spacing pattern for deepwater turbidity channel reservoirs of the Akpo oilfield in Niger Delta Basin, West Africa, we introduced a novel method to characterize such turbidity channel reservoir architectures in terms of well-to-seismic integration, and discussed its conception and procedures as well. Reservoir architectures of deepwater turbidity channels can be classified into three orders, channel system, channel complex and single channel. Of

  12. The Accumulation Rules of Budate Buried Hill Hydrocarbon Reservoir of Sudeerte Oilfield in Hailar Basin%海拉尔盆地苏德尔特油田布达特潜山油藏成藏规律

    Institute of Scientific and Technical Information of China (English)

    施尚明; 付红军; 樊自立

    2011-01-01

    Metamorphic rock burial hill reservoir of Bell rift in Hailaer Basin, with large scale reservoir and high output, has complex fault system.The fault throughgoing direction roughly is NEE direction, and has wide fault section and lateral quickly changed fault displacement.Through the analysis of the core, debris, electric curve and seismic cross section, metamorphic rock reservoir can be divided in the vertical: weathered fracture zone, crack and corroded hollow and cave development belt, and tight zone.Accumulation is controlled by hydrocarbon ability of source rock, contacting relationship of source rock and reservoir, oil storage ability of reservoir,and vertical and lateral oil-gas migration of fault and unconformity surface.And formed top surface weathering crust accumulation pattern which the oil and gas is lateral migration along the unconformity surface, and inside reservoir pattern of crack broken zone accumulation which oil and gas has the vertical migration along fault.%海拉尔盆地贝尔断陷中的变质岩潜山油藏规模大,产量高.断裂系统复杂,断层展布方向大致为北东东向,断面宽度大、断距横向变化快.变质岩储层在纵向上可分为:风化破碎带,裂缝、溶孔、溶洞发育带和致密带.油藏成藏规律受烃源岩供烃能力及与储层接触关系、储层自身的储油能力、断层及不整合面垂向、侧向运移油气能力控制.形成了以油气沿断裂和不整合面组合侧向运移的布达特群顶面风化壳聚集成藏模式和油气沿断裂垂向运移的布达特群内部裂缝破碎带聚集成藏的内幕油气藏模式.

  13. Research and Development of Beach -Bar Sandstone Reservoir in Bamianhe Oilfield%八面河地区滩坝砂储层研究及开发实践--以面4-面14区沙四1砂组为例

    Institute of Scientific and Technical Information of China (English)

    杨伟; 陈军霞

    2015-01-01

    There is a large range of beach-bar sandstone reservoir in Bamianhe Oilfield with a large scale of reserves among which untouched reserves of thin oil suitable for water -flooding and Class 1 heavy oil are majorly distributed in 1st sand group of Sha-4 member of Mian 4-14 at the main tectonic belt .Based on Static and dynamic data ,in‐terpretation standard is reenacted to interpret the reservoir again and estimate its oiliness and physical property . Three years of development practice in the new district proves that early water -flooding ,proper shortening of well spacing and beforehand filling modification are suitable to such a reservoir .%八面河油田滩坝砂储层分布范围较广,未动用储量达两千余万吨,储量规模大。其中适合注水开发的稀油和普通稠油Ⅰ类油藏未动用储量主要分布在主体构造带的面4-面14区沙四段1砂组。此次主要通过岩芯、生产动态等静动态资料,重新制定解释标准,对储层进行二次解释。并结合测井资料归一化成果,对储层含油性、物性特征做出评价。进而综合开发方式及配套工艺优化组合研究成果,优选区域开展评价和新区产能建设。通过近三年的新区产建实践,证实先期注水开发、适当缩小井距的开发方式及预充填改造等配套工艺是适合该区域储层,能够满足其储层开发需要。

  14. 高性能水基钻井液在大庆油田致密油藏水平井中的应用%Application of High-Performance Water-Based Drilling Fluid for Horizontal Wells in Tight Reservoirs of Daqing Oilfield

    Institute of Scientific and Technical Information of China (English)

    侯杰; 刘永贵; 李海

    2015-01-01

    During the drilling of middle-shallow tight oil reservoirs in the Daqing Oilfield ,mud mak-ing ,hole shrinkage ,caving and other downhole complications are frequently observed .To evaluate the problem ,SEM and cast slice analyses were performed on core samples taken from tight reservoirs ,and synergistic effects of polyamine and polyalcohol were used to enhance the inhibition performances of drill-ing fluids .By jointly using conventional physical plugging techniques and chemical plugging using polyal-cohol ,the plugging performances of drilling fluids in micro-fractures were enhanced significantly .By using assessment techniques with a combination of macrofacies and microfacies ,polyamine inhibition additives with optimal performances were identified .In addition ,with deployment of polyalcohol and other additives with satisfactory compatibility ,a high-performance water-based drilling fluid with outstanding inhibition and plugging performance was generated .Lab test results showed that the high-performance water-based drilling fluid had rolling recovery rates above 95% for shale ,with total fluid production from micro-frac-tures with sizes of 10 50 μm less than 2 mL ,and with lubrication coefficients under extreme pressures at merely 0.10 .The new drilling fluid was then deployed in 9 wells drilled in tight oil reservoirs in the Daqing Oilfield w here it achieved outstanding performance .In Well Long26-Ping9 ,an expansion of the borehole diameter was no more than 9.31% ,whereas the highest ROP was 10.58 m/h .Research results showed that the high-performance water-based drilling fluid could meet demands for development of tight oil reser-voirs in the Daqing Oilfield .%针对大庆油田中浅层致密油藏水平井钻井过程中常发生造浆、缩径和剥落掉块等问题,在对致密油储层岩心进行电镜扫描、铸体薄片分析等的基础上,利用聚胺、聚合醇的“两元协同”作用提高钻井液的抑制性,利用常规物理

  15. OMRC Technology Effectively Develops the Massive Thick Metamorphic Buried Hill Reservoir

    Institute of Scientific and Technical Information of China (English)

    Ren Fangxiang; Zhang Fangli; Sun Yan; Gong Yaojin; Xu Ning; Zhao Zhigang

    2010-01-01

    @@ Introduction Optimized maximum reservoir contact technology(OMRC)is developed based on the maximum reservoir contact(MRC)technology,which is a kind of technology to optimize candidate multilaterals with appropriate specification based on the reservoir conditions.By applying the technology in XLT buried hill reservoir in Liaohe Oilfield satisfactory effects are obtained.

  16. Accumulation patterns of the Chang-9 oil reservoir in the Yanchang Formation of Hongjingzi area in Jiyuan oilfield%姬塬油田红井子地区延长组长9油层组石油富集规律

    Institute of Scientific and Technical Information of China (English)

    陈朝兵; 朱玉双; 谢辉; 张杰; 王海华; 程刚; 徐森

    2012-01-01

    The paper summarized the hydrocarbon accumulation pattern in the formation based on analysis of logging and core data, relationship among lithology, physical property, electrical property and oil-bearing situation , as well as formation test and production test results from the Chang-9 reservoir in the Yanchang Formation of the Hongjingzi block in Jiyuan oilfield, Ordos Basin. It is suggested that the oil and gas generated in source rocks of the Chang-7 layer were mainly driven by the excess flow pressure inside and migrated to the Chang-9 reservoirs through pores and fractures. However,the hydrocarbon expulsion in Chang-7 was not strong enough to fully fill up the Chang-9 reservoirs. In addition the bottom water widely developed in the Chang-9 reservoirs impeded the further downward migration of hydrocarbons. The top barriers inside the Chang-9 provided the sealing conditions necessary for hydrocarbon accumulation in the reservoirs, resulting in the enrichment of some hydrocarbons in in-terlayers inside the Chang-9. Hydrocarbons might first accumulate in top layers of the Chang-91 where the physical properties were more favorable due to the dual control of lithology and physical properties. The relationship between structure features and formation testing as well as production testing results demonstrates that the structural relief has very little effect on oil and gas accumulations in the Chang-9 reservoirs.%通过测井分析、岩心观察、“四性关系”(岩性、物性、电性、含油性)研究以及试油、试采数据分析,结合构造特征解析,总结了鄂尔多斯盆地姬塬油田红井子地区长9油层组的石油富集规律.长7烃源岩生成的油气以流体过剩压力为主要驱动力,通过孔隙和裂缝运移至长9储层;长7烃源岩排烃强度有限、动力不足,使油气无法完全充满长9储层,而长9内部普遍发育的底水进一步阻碍了油气向下运移;长9顶部稳定发育的隔层为油气聚集提

  17. Approximately-Balanced Drilling in Daqing Oilfield

    Institute of Scientific and Technical Information of China (English)

    Xia Bairu; Zheng Xiuhua; Li Guoqing; Tian Tuo

    2004-01-01

    The Daqing oilfield is a multilayered heterogeneous oil field where the pressure are different in the same vertical profile causing many troubles to the adjustment well drillings. The approximately-balanced drilling technique has been developed and proved to be efficient and successful in Daqing oilfield. This paper discusses the application of approximately-balanced drilling technique under the condition of multilayered pressure in Daqing oilfield, including the prediction of formation pressure, the pressure discharge technique for the drilling well and the control of the density of drilling fluid.

  18. Studies on CO2 Injection Scenarios for Large Dip Angle Reservoir of Funing Group in ZJD Oilfield%ZJD油田阜宁组大倾角油藏注CO2方式探讨

    Institute of Scientific and Technical Information of China (English)

    陈祖华

    2014-01-01

    倾角对于CO2驱利用重力来改善驱油效率和提高原油采收率具有重要意义。针对ZJD油田阜宁组大倾角油藏,应用数值模拟方法研究了地层倾角和注气部位对CO2驱油效果的影响。结果表明:随着地层倾角的增加,注CO2驱油采出程度也增加,而油藏高部位剩余油饱和度降低。低部位注气采出程度均低于高部位注气,且地层倾角越小,高部位注气的优势越不明显,地层倾角越大,高部位注气效果越好,CO2可在高部位形成小的气顶,更有利于气驱油。应用大倾角油藏实际地质模型研究注气方式对CO2驱油效果的影响,高部位注气比低部位注气可提高采收率8.69%,并可动用更多的储量。油藏现场实际应用后取得初步效果,高部位注气半年后油藏腰部的中心井从无产量恢复到9.3 t的原油产量。%It is reported in domestic and foreign literatures that higher displacement efficiency an d oil recovery will be achieved with gas injection by utilizing gravity in a tilt reservoir than in a reservoir with a little tilt. In this paper,by using numerical simulation,the effects of dip angle and injecting position on CO2 displacement efficiency is studied. The result of the simulation shows that with the increase of dip angle,recovery percentage by CO2 injection increases while the residual oil saturation in the high part of the reservoir decreases. Furthermore,oil recoveries by injecting CO2 in the high part are higher than that in the low part in all scenarios. And the larger dip angle,the better displacement effect can be obtained by injecting CO2 in the high part as CO2 can form a small CO2 cap which is helpful for flooding oil. Experiments of the effect of different injection scenarios with the practical geological model of large angle reservoir indicates that injecting CO2 in the high part can enhance oil recovery by 8.69%more than injecting in the low part,and it activates

  19. Broadening Cooperation Realm to Promote Stable Development of Shengli Oil Area

    Institute of Scientific and Technical Information of China (English)

    Li Jifu; Yao Shiyu

    1997-01-01

    @@ As the second largest oil area in China, Shengli Petroleum Administration has constantly been strengthening the international cooperation over the recent years in the principal part of the Shengli oil area under the guidance of the national open policy. In venture exploration, data packages have been prepared for the three blocks of Kengdong, Chexi and Qingtuozi with an exploration area of 2370 square kilometers.

  20. 八面河油田面十四区沙四段油层保护技术研究%On Reservoir Protection of the Fourth Member of Shahejie Formation in Mian 14 District of Ba Mianhe Oilfield

    Institute of Scientific and Technical Information of China (English)

    甘旭红; 赵业富

    2011-01-01

    八面河油田面十四区沙四段储层为泥质胶结疏松砂岩油藏,粉细沙、微粒、粘土分散运移易造成地层堵塞,损害油层渗透性,具有潜在伤害油层的内因。在对油藏潜在伤害因素分析评价的基础上,优选入井液中多种油层保护添加荆,对油井增产措施作业提出了相应的油层保护措施。%Reservoirs located in the fourth member of Shahejie formation in Mian 14 district of Ba Mianhe Oil Field are typical unconsolidated sandstone deposits formed by muddy cementation. The scattering and migration of silty fine sands, motes and clay can cause

  1. A New Era of Diversified Economy in Daqing Oilfield

    Institute of Scientific and Technical Information of China (English)

    Zhou Baoling

    1994-01-01

    @@ Daqing Oilfield is the biggest oilfield in China,as well as one of ten most famous oilfields in the world. For the past 30 years, its exploration and development of oil and gas and its field construction have been marvelously successful. Its contribution to Chinese petroleum industry is enormous.

  2. A quantitative stratified method based on computational thinking:Taken Chang 6 reservoir in Zibei Oilfield as an example%基于计算思维的定量分层方法研究--以子北油田长6段为例

    Institute of Scientific and Technical Information of China (English)

    赵妮

    2016-01-01

    计算思维与实验思维和理论思维被认为是当今社会人类的三大科学思维方式。定量分层是层序地层学研究的一项难题,地层划分的最优分割法是定量岩石地层学中的一种常见算法。在应用测井资料进行分层时,溶入计算思维的新思想,从地质及沉积环境特征出发,对数据进行必要的归纳、推理,寻找敏感指标用于资料解释,采用关注点分离的方法对最优分割算法进行了改进,并在子北油田长6段单井数据定量分层中进行了应用,取得了明显的划分效果。实践证明该方法在测井数据定量分层中具有一定的应用价值。%The computational thinking ,the experimental thought and the theoretical thought are considered to be three ways of human scientific thinking in today’s society.The quantitative stratification is a difficult issue in the study of se-quence stratigraphy.The optimal segmentation method for stratigraphic classification is a common algorithm in quantitative lithostratigraphy.When logging data were applied in stratification,considering the new ideas of the computational thinking, from the geological characteristics and sedimentary environments,it was necessary to summarize and deduce the logging da-ta.And then a sensitive indicator was proposed to interpret the data.The optimal segmentation method was improved by a-dopting the method of separation of concerns.The new method was applied in the quantitative lithostratigraphy of logging data from Chang 6 reservoir in Zibei Oilfield.And the obvious stratified effect was obtained.The practice application proves that the method has a certain applied value in the quantitative stratification of logging data.

  3. 我国海上低渗油田分类标准研究%A classification of low-permeability oilfields offshore China

    Institute of Scientific and Technical Information of China (English)

    张金庆; 杨凯雷; 梁斌

    2012-01-01

    在分析低渗油田国家分类标准的基础上,基于低渗油田启动压力梯度和岩心应力敏感性实验,形成了我国海上低渗油田分类标准:渗透率在10~50 mD的油田为一般低渗透油田,此类油田储层可忽略启动压力梯度和压敏效应;渗透率在5~10 mD的油田为特低渗透油田,此类油田储层存在启动压力梯度,但压敏效应可忽略;渗透率低于5 mD的油田为超低渗透油田,此类油田储层同时存在启动压力梯度和压敏效应.根据这一分类标准,可以较好地梳理中国近海低渗油田的油气资源,筛选出在目前技术和经济条件下适合开采的低渗油田.%According to an analysis of the national classification for low-permeability oilfields and some experiments of threshold pressure gradient and core stress sensitivity in low-permeability oilfields, a new classification was developed for the low-permeability oilfields offshore China. In this new classification, the oilfields with permeability between 10 ~ 50 mD are considered as GENERAL low-permeability oilfields, in whose reservoirs the effects of threshold pressure gradient and stress sensitivity can be ignored; the oilfields with permeability between 5~10 mD are referred to SPECIAL low-permeability oilfields, in whose reservoirs the stress sensitivity effect can be ignored, but the effect of threshold pressure gradient exists; and the oilfields with permeability below 5 mD are referred to ULTRA low-permeability oilfields, in whose reservoirs both the effects of threshold pressure gradient and stress sensitivity exist. This new classification can be used to classify reasonably the low-permeability hydrocarbon resources offshore China and select the low-permeability oilfields that can be developed effectively under the present technology and economy.

  4. Development of Karst Formation in Area 4 of Tahe Oilfield

    Institute of Scientific and Technical Information of China (English)

    ZHOU Ying-jie; DU Yu-shan; ZHANG Jing-xuan; QU Quan-gong; LI Jing-hao; WU Qiang

    2003-01-01

    The main oil-bearing formation of Area 4 of Tahe oilfield is in Yingshan Group of Ordovician consisted of thick pure limestone. The types of the pore space contain the pore, fissure, cave as well as fracture formed by solution collapse. The primary porosity and tectonic fracture are of poor growth. Therefore, the formation growth is mainly controlled by hydraulic units of the palaeo-karst. There are three palaeo-hydraulic zones: vadose zone (including infiltration sub-zone and percolation sub-zone), phreatic zone and tranquil zone. They are identified by retrieving the palaeo-geographical karst environment. The pore space of the infiltration zone is mainly solution fissures, small solution cavities and solution pores. The growth and lateral connection of the formation are favorable. The reservoir/formation ratio is 0.54. The pore space of the phreatic zone developed large size cavities and fractures related to cave collapse. The height of the cavity can reach 71m. The fractures by collapse have a influencing range of more than 100m, and its reservoir/formation ratio is 0. 51. But the lateral connection is unfavorable. The percolation subzone and the tranquil zone are of relatively poor growth with the reservoir/tormation ratio less than 0. 3.

  5. Carbon dioxide sources and oilfields in a nine-state area of the southwest United States

    Energy Technology Data Exchange (ETDEWEB)

    Finney, R.E.; Heath, L.J.

    1977-04-01

    Data on the prospective available CO/sub 2/ in a nine-state area of the Southwest were collected from scattered sources and compiled to make the information readily available to operators who may be interested in using CO/sub 2/ techniques for enhanced oilfield recoveries. Maps of the oilfields in the area studied are provided so that location of supply source can be related to possible point of use. The best potential sources of CO/sub 2/ are flue gas from electric generating plants, flue gas from cement plants, output from ammonia plants and natural gas reservoirs. The CO/sub 2/ sources are listed by states and include the operator's name, location name, county, and average available amounts of CO/sub 2/.

  6. Data Analysis and Neuro-Fuzzy Technique for EOR Screening: Application in Angolan Oilfields

    Directory of Open Access Journals (Sweden)

    Geraldo A. R. Ramos

    2017-06-01

    Full Text Available In this work, a neuro-fuzzy (NF simulation study was conducted in order to screen candidate reservoirs for enhanced oil recovery (EOR projects in Angolan oilfields. First, a knowledge pattern is extracted by combining both the searching potential of fuzzy-logic (FL and the learning capability of neural network (NN to make a priori decisions. The extracted knowledge pattern is validated against rock and fluid data trained from successful EOR projects around the world. Then, data from Block K offshore Angolan oilfields are then mined and analysed using box-plot technique for the investigation of the degree of suitability for EOR projects. The trained and validated model is then tested on the Angolan field data (Block K where EOR application is yet to be fully established. The results from the NF simulation technique applied in this investigation show that polymer, hydrocarbon gas, and combustion are the suitable EOR techniques.

  7. Brief Introduction to Daqing Oilfield Engineering Company Limited

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ Daqing Oilfield Engineering Company Limited (originally named Daqing Oilfield Construction Design and Research Institute), was founded in April, 1960. With the rapid development of China's petroleum industry and Daqing oilfield in the past 45 years, Daqing Oilfield Engineering Company Limited (DOE) has evolved into an integrated engineering service enterprise in engineering consultation, survey, design,turnkey (EPC) projects, research and development, and hightech industrialization, and has become a strong team in oilfield surface engineering both at home and abroad. It has always been listed amongst China's top 100 enterprises for overall strength in survey and design since 1990s.

  8. Development of Oilfield Chemicals Based on Advantages in Petrochemical Feedstocks

    Institute of Scientific and Technical Information of China (English)

    Wang Xieqing; Peng Pu

    2002-01-01

    This article focuses on the routes for development of oilfield chemicals by making use of the feedstock advantages of the petrochemical industry. The diversification of oilfield chemicals has re sulted in thousand product grades. Because there are hundred domestic producers of oilfield chemicals,mostly medium and small producers, the fluctuations of feedstock prices and product quality cannot be conducive to the application and development of oilfield chemicals. This article illustrates the feasibility of oilfield chemical production by state-run medium and large petrochemical enterprises by allowing full play to their own advantages in petrochemical feedstocks.

  9. Status and Future Target of Dagang Oilfield

    Institute of Scientific and Technical Information of China (English)

    Sun Xijing

    1995-01-01

    @@ Dagang Oilfield was established in January,1964. After 30 years hard construction, its oil production is 4. 2 million tons per year,and gas production is 360 million cubic meters per year. It has become a complex energy base which operates oil and gas production,crude oil processing, mechanical manufacture, scientific research and design ,and diversified economy. Dagang oilfield was ranked 57th among the 500 biggest industrial enterprises of China in 1994 (based on total sales)and the 5th place in petroleum industry of China.

  10. [Compositions and residual properties of petroleum hydrocarbon in contaminated soil of the oilfields].

    Science.gov (United States)

    Hu, Di; Li, Chuan; Dong, Qian-Qian; Li, Li-Ming; Li, Guang-He

    2014-01-01

    The aims of this study were to determine the compositions and residual properties of petroleum hydrocarbon in soil, as well as to identify the source and weathering degree of the pollution. A total of 5 producing wells in Gudao and Hekou oil producing region of Shengli oilfields were analyzed. More than 50 individual target compounds including straight-and branched-chain alkanes( n-alkanes, pristine and phytane) and polycyclic aromatic hydrocarbons (PAHs) in soil samples and crude oil were determined by gas chromatography-mass spectrometry (GC-MS). The percentages of chain alkanes and PAHs in total solvent extractable matters(TSEM) of soil samples were both much lower than those in the crude oil samples. The compositions of petroleum hydrocarbon in soil samples differed from those in crude oil, which indicated the n-alkanes with carbon numbers oil contaminated soils, the relationship between the index and petroleum hydrocarbon compounds was analyzed using principal component analysis (PCA). The results showed that the n-alkanes with carbon numbers > 33 and the PAHs with rings between 3 and 5 were much harder to degrade. PCA of 4 indexes for source identification revealed more than 50% of the soil samples were polluted by crude oil, which needs more attention during remediation.

  11. A Comparative Analysis of Three English Translations of Li Qingzhao ’s Sheng Sheng Man in Two Different Theoretical Frameworks

    Institute of Scientific and Technical Information of China (English)

    SU Zhi-jun

    2016-01-01

    Demanding as it has always been, verse translation is a suitable subject to observe on what ground and how translators make their choices to deal with translation problems. By comparing three different English versions of Li Qingzhao’s Sheng Sheng Man within two dramatically different theoretical frameworks, namely the skopos theory and Walter Benjamin’s theory on pure language, the present study aims at deriving a reflection on the nature of translation as a practice, a closer look at its dy-namic complexity.

  12. Developments in China's Onshore Oilfield Production Technology

    Institute of Scientific and Technical Information of China (English)

    Yue Dengtai; Rong Jiashu

    1997-01-01

    @@ As of the end of 1996, China had 330 onshore oilfields in production with a total annual output of 141 × 106 t. Water flooded reserves accounted for 85% of total development reserves, with annual oil output from water flooded reserves accounting for 88% of total annual oil production.

  13. Pipeline Corrosion Prevention Technical Research and Application in Shengli Oilifeld%胜利油田管道防腐技术研究及应用

    Institute of Scientific and Technical Information of China (English)

    闫方平

    2014-01-01

    In allusion to corrosion of pipeline in Shengli Oilfield,electrochemical testing method is used to study and analyze the influence law of factors in pressure ,temperature ,velocity of flow and pH value to corrosion. Electrochemical method and coupon weight methods are utilized to assess corrosion inhibitors A,B, C and D. It is indicated that corrosion inhibitors A has a best effect. Corrosion control tests with corrosion inhibitors A,Test results show that corrosion is effectively inhibited in the pipeline and economic benefit is improved afterward.%采用电化学试验方法,研究了压力、温度、流速和pH值等因素对腐蚀的影响规律。针对胜利油田管道腐蚀问题,采用电化学法和挂片法对A、B、C和D四种防腐剂进行了评价,结果表明,防腐剂A的防腐效果较好,选用防腐剂A进行现场试验,结果表明,加入防腐剂后有效抑制了腐蚀,有利于提高油田经济效益。

  14. 油田可持续发展系统动力学研究%A System Dynamics Research on the Sustainable Development of Oilfield

    Institute of Scientific and Technical Information of China (English)

    尚文龙

    2011-01-01

    Based on the theory of sustainable development, this paper uses principles and methods of system dynamics, draw the system dynamics flow diagram and establish a man--machine dialogue economic model which can run on the computer. Through the model input the data of exploration of Shengli Oilfield and social development and environmental of Dongying City, to the oilfield of sustainable development system for a long-term, dynamic, systematic analysis of quantitative and qualitative research, thus analyzes and forecasts the index of the Shengli oil field, and makes some suggestions. This study provides a reference for harmonious development of oil resources and socio-economic environment system, and provides a scientific basis for policy-making departments to make a better decision.%以可持续发展理论为基础,采用系统动力学的原理和方法,绘出系统动力学流图,建立了能在计算机上运行的、人一机对话式的经济模型。通过在该模型上输入胜利油田勘探开发和东营市社会环境数据,对油田可持续发展系统进行长期的、动态的、系统性的定量定性分析研究,从而对胜利油田的各项指标进行了分析和预测,并提出相关建议。本文为石油资源与社会经济环境系统的协调发展提供了参考,为决策部门更好的决策提供了科学依据。

  15. Determination of density pattern of fracture in Asmari Formation in Marun oilfield

    Directory of Open Access Journals (Sweden)

    Kheyrollah Noraeinezhad

    2015-05-01

    Full Text Available Marun oilfield is located in the middle part of Dezful Embayment and is situated along the Aghajari, Ahvaz and Ramin anticline. Given the important role of fracture characteristics for improving production, so the aim of this research is to investigate the density pattern of fracture in Asmari formation in Marun oilfield. For this purpose, results of image log, core data, graphic well log, methods of inscribed circle analysis and curvature changes geometry of anticline were analyzed. Asmari formation is the main reservoir rock in Marun oilfield that divided into five zones. Limestone and dolomite are the main lithology of zones 1, 2 and 3 which has a high density of fractures (especially in zones with 90% dolomite. Also there is less fracture density (micro fracture in the 4 and 5 Asmari zone due to an increase of shale and marl layers and due to less break ablity has a less distribution of fractures. The result show that there are a good conformity existed between the results of inscribed circle analysis, image log, core data, curvature and the presence of fractures in Marun anticline. The data indicate that highest density of fracture density concentrates in the southern limb in the central region of anticline and also in the north limb in the northeast region of the anticline. So, finally using these parameters, it is recommended that further development and production wells be drilled in the north eastern part of the oil filed as well as center part of southern flank of the anticline.

  16. Application of Neuro-Net Technology to Reservoir Prediction in Chendao Oil Field

    Institute of Scientific and Technical Information of China (English)

    Jiang Suhua

    1996-01-01

    @@ Recently, the Research Institute of Geological Sciences of the Shengli oil region and the University of Petroleum have been cooperated in developing a set of intelligent expert system to predicte reservoir and to estimate sand body thickness using multiple seismic information.

  17. Legal issues concerning oilfield waste management in Alberta

    Energy Technology Data Exchange (ETDEWEB)

    Gilmour, B.S. [Bennett Jones Verchere, Calgary, AB (Canada)

    1998-12-31

    The Alberta Energy and Utilities Board (EUB) is the regulatory authority with regard to oilfield wastes and oilfield waste management facilities. This presentation provided an overview of existing legislation and regulations in this area. Highlights of EUB Guide 58, and the application of the release of substances and contaminated sites provisions of the Environmental Protection and Enhancement Act (EPEA) regarding oilfield wastes and oilfield waste management facilities were also discussed. Generators, transporters and receivers of oilfield waste are potentially liable under the EPEA if oilfield wastes are released into the environment. Liabilities could imply clean-up orders, fines or penalties. The offences, penalties and enforcements of two acts, the Gas Conservation Act and the Environmental Protection and Enhancement Act, were compared.

  18. Development of High Viscous Oil in Sandstone Reserviors During the High Water Cut Stage, Gudao Oilfield

    Institute of Scientific and Technical Information of China (English)

    Bi Yanpeng; Li Yang; Lu Xianliang

    1994-01-01

    @@ Geological Characteristics and Production History The oil-bearing area of Gudao Oilfield covers 80. 9 square kilometers, with 373 million tons of oil in place. It is a large drape anticlinal. Neogene Gudao Formation is main oil-beraing reservoir developed with dip gentle from 30′ to 1°30′in general.The main oil-bearing sequences can be divided into 6sand groups and 34 layers in detail, in which the Ng3-Ng6 sand groups are the main payzones in which oil in place accounts for 97.2% of the total.

  19. Prospect evaluation of BED 3 and Sitra oilfields, Abu Gharadig Basin, North Western Desert, Egypt

    Science.gov (United States)

    Salem, Ibrahim; Ghazala, Hosni; El Diasty, Waleed

    2015-12-01

    The occurrence of hydrocarbons is closely linked to the elements of petroleum system history of the BED 3 and Sitra 8 oilfields, which has created multiple reservoir and seal combinations. BED 3 Field and Sitra concessions occupy the northwestern part of the Abu Gharadig Basin and extends between latitudes 29°45‧ and 30°05‧N and longitudes 27°30‧ and 28°10‧E. The comprehensive integration of the geo-related data and the interpretation of the well logging, geochemical, seismic data in time domain and depth and sealing mechanisms explain the occurrence of hydrocarbons in some certain reservoirs during cretaceous age and other reservoirs in the same fields don't have any hydrocarbon accumulation. Detailed seismic data interpretation was performed for the target units of BED 3 and Sitra 8 oilfields in time domain and converted to depth domain. Sitra 8 Field is a three-way dip closure bounded by NW-SE faults while BED 3 field is represented by a WNW-ESE trending horst dipping to the east. The Albian-Cenomanian Kharita Formation has a high energy shallow marine shelf environment and considered as the main pay zone in the BED 3 oilfield. On the other hand, Kharita sands are dry in the Sitra 8 Field. Also, the shallow marine shale, sandstone, limestone and dolomite interbeds of the Abu Roash G Member are another hydrocarbon bearing reservoir in the Sitra 8 Field. Sealing mechanisms were applied to explain why certain reservoirs have hydrocarbon and others don't. Allan's juxtaposition diagram for the main faults in the study area shows that Kharita sands in BED 3 area have excellent juxtaposition as Kharita juxtapose to upper Bahariya and intra Bahariya, which consist of shale and limestone. Abu Roash G sands in BED 3 area have bad juxtaposition as the Abu Roash G juxtapose to Abu Roash C sand (sand juxtaposed sand). Allan's diagram shows that the Abu Roash G reservoir (main target) in Sitra 8 is juxtaposing Abu Roash D which is composed of limestone and shale

  20. Research on Technology of Enhance Water Drive Recovery by Simulating Strong Edge-wate to Develop Fault-block oil Reservoirs%胜利断块油藏人工边水驱提高采收率技术研究

    Institute of Scientific and Technical Information of China (English)

    王建

    2012-01-01

    通过对胜利油田高采收率断块油藏地质开发特征的分析研究,归纳总结了其获得高采收率的成功开发经验.在此基础上,提出了借鉴其成功经验和做法开展人工仿强边水驱开发断块油藏的技术思路.矿场试验研究表明可以实现剩余油的有效动用和高效波及,而且对断块油藏进一步提高采收率具有重要意义.同时这还有利于油田的污水减排工作,具有较高的社会经济效益.%According to the analyse and research on geology & development feature in high-recovery fault-block oil reservoirs of Shengli oilfield, the successful development experience which obtained higher oil recovery and belter economic benefit was summarized. Base on it, the technology thoughts about simulating Strong edge-wate to develop fault-block oil reservoirs by injecting water was bringed forward. Using the technology, the remaining oil in fault-block oil reservoirs will be obtained effective startup and high-efficienc sweep. However the technology will be propitious to improve recovery ratio and save water and reduce wastewater emission. The ecological, economy and social benefit will be very salient

  1. Water treatment processes for oilfield steam injection

    Energy Technology Data Exchange (ETDEWEB)

    Shannon, A.; Pauley, J.C. [Chevron Canada Ltd., Vancouver, BC (Canada)

    2009-07-01

    Various water treatment processes are used within the oilfield industry. Processes tend to be common within one region of the world, but different between regions due to untreated water characteristics and treated water quality requirements. This paper summarized Chevron's view of water treatment requirements and processes for oilfield steam injection. It identified water treatment systems that have been used at thermal projects, where they are most commonly utilized, their purpose, and the limits of each process. The advantages and disadvantages of different water treatment systems were also reviewed. The paper focused on the treatment of fresh waters, low-TDS produced waters, high-hardness waters, and high-silica produced waters. Challenges and opportunities were also identified. It was concluded that the challenges created by high-silica, or by high-hardness produced waters lead to more costly processes. 25 refs., 5 tabs., 4 figs.

  2. strong water sensitivity; heavy oil reservoir; thermal recovery; thermal compound chemical flooding; electron microscope analysisA study on a thermal compound chemical method for improving development efficiency of heavy-oil reservoirs with strong sensiti%热复合化学方法改善极强敏感性稠油油藏开发效果机理

    Institute of Scientific and Technical Information of China (English)

    曹嫣镔; 于田田; 林吉生; 刘冬青; 何绍群; 王全; 夏道宏

    2013-01-01

    Heavy-oil reservoirs with extremely strong water sensitivity in the Shengli oilfield are mainly distributed in the Jinjia oilfield and their reserves amount to more than 20 million tons. In addition, the thermal recovery effect only by steam injection seems poor and it is difficult to effectively produce these reserves because the water sensitivity index for this kind of reservoirs exceeds 0. 9. In view of the above contradiction, a thermal compound chemical method research was carried out, in which real cores from the Jinjia oilfield were used to evaluate different displacement manners based on thermal compound chemical flooding, such as the vapor + high-temperature antiswelling agent, steam + high-performance oil displacement agent, and steam + high-performance oil displacement a-gent + high-temperature condensation agent. Composition changes of clay minerals, clay distributions in pore throats and radius distributions of pore throats were measured by means of X diffraction, scanning electron microscope, cast thin section and mercury-injection in order to explore principle mechanisms of the enhanced oil recovery with the thermal compound chemical method under high-temperature conditions. The results showed that the thermal compound chemical displacement manner with the steam + high-temperature oil displacement agent + high-temperature condensation agent can promote the transformation of montmorillonite to illite and the dissolution of part kaolinite at the same time, which can greatly improve pore-throat flow channels of reservoirs to form large "hot-wormholes" that remarkably increase the permeability and flooding displacement efficiency of heavy-oil reservoirs with strong water sensitivity.%胜利油田极强水敏性稠油油藏主要分布在金家油田,储量在2 000×104 t以上,该类油藏水敏指数在0.9以上,单纯注蒸汽热采开发效果差,无法实现有效动用.笔者针对以上矛盾,开展了热复合化学方法开采技术研究.利用

  3. [Sheng's acupuncture manipulation at bone-nearby acupoints and the academic thoughts].

    Science.gov (United States)

    Sheng, Ji-li; Jin, Xiao-qing

    2014-11-01

    Sheng's acupuncture manipulation at bone-nearby acupoints is a set of needling manipulation of the chief physician of TCM, SHENG Xie-sun, summarized through his over 50 years clinical experiences and on the basis of Internal Classic. Regarding this manipulation, on the premise of acupoint selection based on syndrome differentiation, the acupoints close to bone are possibly selected and punctured, with the needle tip toward bone edge, and followed by the technique to achieve reducing purpose. Clinically, the significant immediate analgesia can be achieved in pain disorders such as headache and toothache. Professor Sheng thought, corresponding to the location of needle insertion and needling depth, the tissue layers of needle tip passing through should be considered specially. The site of needle insertion should be changeable so as to ensure the needle tip reaching the bone. This manipulation for analgesia provides a certain guide for acupuncture study, especially for the mechanism study on acupuncture analgesia.

  4. Investigation of Multi-Criteria Decision Consistency: A Triplex Approach to Optimal Oilfield Portfolio Investment Decisions

    Science.gov (United States)

    Qaradaghi, Mohammed

    Complexity of the capital intensive oil and gas portfolio investments is continuously growing. It is manifested in the constant increase in the type, number and degree of risks and uncertainties, which consequently lead to more challenging decision making problems. A typical complex decision making problem in petroleum exploration and production (E&P) is the selection and prioritization of oilfields/projects in a portfolio investment. Prioritizing oilfields maybe required for different purposes, including the achievement of a targeted production and allocation of limited available development resources. These resources cannot be distributed evenly nor can they be allocated based on the oilfield size or production capacity alone since various other factors need to be considered simultaneously. These factors may include subsurface complexity, size of reservoir, plateau production and needed infrastructure in addition to other issues of strategic concern, such as socio-economic, environmental and fiscal policies, particularly when the decision making involves governments or national oil companies. Therefore, it would be imperative to employ decision aiding tools that not only address these factors, but also incorporate the decision makers' preferences clearly and accurately. However, the tools commonly used in project portfolio selection and optimization, including intuitive approaches, vary in their focus and strength in addressing the different criteria involved in such decision problems. They are also disadvantaged by a number of drawbacks, which may include lacking the capacity to address multiple and interrelated criteria, uncertainty and risk, project relationship with regard to value contribution and optimum resource utilization, non-monetary attributes, decision maker's knowledge and expertise, in addition to varying levels of ease of use and other practical and theoretical drawbacks. These drawbacks have motivated researchers to investigate other tools and

  5. Investigating the effect of steam, CO{sub 2}, and surfactant on the recovery of heavy oil reservoirs

    Energy Technology Data Exchange (ETDEWEB)

    Tian, S.; He, S. [China Univ. of Petroleum, Beijing (China). MOE Key Laboratory of Petroleum Engineering; Qu, L. [Shengli Oil Field Co. (China)]|[SINOPEC, Shengli (China)

    2008-10-15

    This paper presented the results of a laboratory study and numerical simulation in which the mechanisms of steam injection with carbon dioxide (CO{sub 2}) and surfactant were investigated. The incremental recoveries of 4 different scenarios were compared and analyzed in terms of phase behaviour. The study also investigated the effect of CO{sub 2} dissolution in oil and water; variation of properties of CO{sub 2}-oil phase equilibrium and CO{sub 2}-water phase equilibrium; variation of viscosity; and, oil volume and interfacial tension (IFT) during the recovery process. The expansion of a steam and CO{sub 2} front was also examined. A field application case of a horizontal well in a heavy oil reservoir in Shengli Oilfield in China was used to determine the actual dynamic performance of the horizontal well and to optimize the injection parameters of the CO{sub 2} and surfactant. The study revealed that oil recovery with the simultaneous injection of steam, CO{sub 2} and surfactant was higher than that of steam injection, steam with CO{sub 2} and steam with surfactant. The improved flow performance in super heavy oil reservoirs could be attributed to CO{sub 2} dissolution in oil which can swell the oil and reduce oil viscosity significantly. The proportion of CO{sub 2} in the free gas phase, oil phase and water phase varies with changes in reservoir pressure and temperature. CO{sub 2} decreases the temperature of the steam slightly, while the surfactant decreases the interfacial tension and helps to improve oil recovery. The study showed that the amount of injected CO{sub 2} and steam has a large effect on heavy oil recovery. Although oil production was found to increase with an increase in injected amounts, the ratio of oil to injected fluids must be considered to achieve optimum recovery. High steam quality and temperature can also improve super heavy oil recovery. The oil recovery was less influenced by the effect of the surfactant than by the effect of CO{sub 2

  6. Key Microbial Dewaxing Technique Developed at Liaohe Oilfields

    Institute of Scientific and Technical Information of China (English)

    1997-01-01

    @@ A high appraisal was given to achievements in microbial dewaxing technology at a project evaluation held at the Liaohe oilfield on Dec. 30, 1996. The new technique was independently developed by the Liaohe Oilfield Well Drilling & Oil Production Research Institute for the purpose of increasing oil output.

  7. Favorable Policy for Foreign Investors in Dagang Oilfield

    Institute of Scientific and Technical Information of China (English)

    Liu Mingfa

    1995-01-01

    @@ Apart from series kinds of good products, advanced techniques, convenient communications and electric power and water supply in Dagand Oilfield, foreign investors who have investment in New Industrial Area of Dagang Oilfield will enjoy the same favourable policies as Tianjin Economic Develoment Zone. Main favorable policies are follows:

  8. Interwell tracing by environmental isotopes at Fimkassar Oilfield, Pakistan

    Energy Technology Data Exchange (ETDEWEB)

    Ahmad, M. E-mail: manzoor@pinstech.org.pk; Tasneem, M.A.; Rafiq, Muhammad; Khan, I.H.; Farooq, M.; Sajjad, M.I

    2003-05-01

    Water flooding is an important operation to enhance oil recovery. Movement of injected water is traced to test the performance of the water flood and verify suspected geological barriers or flow channels, etc. This paper describes the application of environmental isotopes as interwell tracers at Fimkassar Oilfield in Chakwal District, Pakistan. Water flooding was started in March 1996 in the Sakessar formation (Eocene). When water appeared in the production well in June 1998, isotopes ({sup 18}O, {sup 2}H and {sup 3}H) were used to determine the breakthrough/transit time of the water flood and the contribution of fresh injected water. Water samples were collected during June 1998-August 1999 from the injection well, the production well, and some other fields for reference indices of the Sakessar formation and analyzed for the {sup 18}O, {sup 2}H and {sup 3}H, and chloride contents. The isotopic results confirmed the breakthrough of injected water and indicated that the water in the production well was a mixture of the injected water and the formation water. The initial breakthrough time was 27 months. The contribution of injected water varied from 67% to 80%. This percentage did not change significantly from the time of breakthrough until the last sampling indicating good mixing in the reservoir and the absence of any high permeability channel. Chloride content did not give any information about the hydraulic connection between the injection well and the production well. The study proved the potential of environmental isotopes for interwell tracing.

  9. 辽河油田多样油品成因探讨%Discussion on Causes of Crude Oil Variety in Liaohe Oilfield

    Institute of Scientific and Technical Information of China (English)

    邱逸

    2014-01-01

    辽河油田是渤海湾油气区的重要组成部分,地质结构复杂,断层异常发育,为典型的断块油田。同时具有多套油气层,多种油气藏类型。对辽河油田油品多样性进行了论述,对油藏埋深、地层水、运移距离以及盖层条件对油藏原油性质影响进行了探讨,提出造成辽河油区油品多样化的重要影响因素。%Liaohe oilfield is an important part of Bohai Gulf oil and gas area, has complex geological structure and fault abnormal development, and belongs to typical fault block oilfields. Liaohe oilfield has multiple sets of hydrocarbon formations, various types of oil and gas reservoirs. In this paper, the diversity of crude oil in Liaohe oilfield was discussed, effect of reservoir buried depth, formation water, transport distance and caprock conditions on properties of crude oil was investigated, the important factors to cause the diversity of Liaohe crude oil were put forward.

  10. Thermal monitoring at E-Sheng cement in China; Waermeueberwachung bei E-Sheng Cement in China

    Energy Technology Data Exchange (ETDEWEB)

    Idoux, Maurice [HGH Infrared Systems, Igny (France)

    2011-07-01

    The E-Sheng cement plant is situated 130 km South East of Chengdu, capital city of Sichuan Province. It is in an environmentally protected area and as such, it is subject to stringent regulations as far as pollution is concerned. The quarry is situated 5 km away on a hillside, 500 m above plant level. Transport of limestone is by one single conveyor. The plant has 5 identical kilns, each 5500 tpd, i.e. 27 500 tpd total output, making it the largest single plant in the southwest of China. The plant was designed by the Nanjing Cement Institute (NCDRI). Its specific heat consumption is 730 kcal/kg of clinker, 65% at the precalciner and 35% at the kiln. Each kiln is 4.8 m dia x 74 m long. Start-up fuel is oil, main fuel is coal, 5500 kcal/kg LHV. The coal mine is 25 km away; coal delivery to the plant is by road. The plant is checked regularly for emissions, management of the plant is particularly advanced and the staff is well trained, thus achieving at high quality product. The total number of employees is 3000. 15% of the production is sold in bags, the rest in bulk. Delivery to clients is by road or rail. The first line was commissioned in 2008, the last in 2010. Due to the 2008 earthquake 300 km away, local demand for cement remains high. Each kiln is equipped with a hig resolution scanner which warns the operator of any refractory lining/coating problems and possible malfunction of the kiln. (orig.)

  11. Prediction of Apparent Equivalent Thickness Using the Spontaneous Potential Method and Its Application to Oilfield Development

    Institute of Scientific and Technical Information of China (English)

    Wang Junheng; Pan Zhuping; Sun Shuwen; Guo Lei

    2007-01-01

    The upper spontaneous potential produced by oil and gas accumulation is of a stable potential field, and its intensity is directly proportional to the content of the source and inversely proportional to the radius apart from the source. Theoretical research and practical results show that anomalies of spontaneous potential can indicate oil-bearing sandstone bodies and locate the areas of oil and gas accumulation. In oil areas which have fewer reservoir beds, the petroleum reservoir thickness can be predicted by determining the linear relationship between potential intensity and apparent apparent equivalent thickness can be predicted by the linear equation h= -0.19x+0.74. On the basis of geological research, we use the spontaneous potential method to predict the equivalent thickness, helping in the selection of the most appropriate drill sites to enhance the probability of successful well boring so as to serve the next round development of the oilfield.

  12. On Singing Features of the Art Song Sheng Sheng Man%论艺术歌曲《声声慢》的演唱特征

    Institute of Scientific and Technical Information of China (English)

    邱雅羚

    2012-01-01

    李清照晚年的作品《声声慢》,这首词押入声韵,并屡用叠字和双声字,节奏舒缓而急促、哀婉、凄厉。表现了作者孤独寂寞的忧郁情绪和动荡不安的心境。正因为这首词艺术特征鲜明,著名作曲家黄永熙先生予以谱曲,赋予了这首词新的艺术生命。在解析《声声慢》词曲艺术的基础上,重点从歌词、伴奏、情感、音准、音色、演唱方法等几个方面进行分析与探讨,研究其演唱规律与特征。%Li Qingzhao's later works "Sheng Sheng Man" changes the rhyme into the phonological, and often uses reduplication and alliteration. The rhythm is sometimes slow and sometimes rapid, sometimes sad and sometimes shrill, which reflects the author's loneliness, depressed mood and turbulent state of mind Precisely because of the poem's distinctive artistic characteristics, famous composer Mr. Huang Yongxi composed the music, giving the poem a new artistic life. In this paper, the author makes an analysis of "Sheng Sheng Man" on the basis of lyrics art. especially focusing on the aspects of lyrics, pitch, phrasing, tone, piano accompaniment, etc. by studying the regular pattern and characteristics of its singing.

  13. 高分辨率层序地层划分在陆相油藏剩余油分布研究中的应用——以克拉玛依油田一东区克拉玛依组为例%Application of high resolution sequence stratigraphy on remaining oil distribution of continental reservoirs: case of Karamay formation of east Karamay oilfield

    Institute of Scientific and Technical Information of China (English)

    刘岩; 丁晓琪; 李学伟

    2013-01-01

    Because China has some of the most water-flooded oilfield in world, stable oil production relies on controlling water injection and increasing oil recovery. The sandstone stacked styles, heterogeneity, geometry of reservoirs can be studied by high resolution sequence stratigraphy with a kind of new vision, which closely links remaining oil distribution and extends new method for studying remaining oil distribution. This paper studies base level changing laws of different cycles based on detailed research of sedimentary mi-cro-facies of Karamay formation, then the short base level cycles of Karamay formation can be divided into 2 main classes and 12 small classes. The middle base level cycles control the development of short base level cycles, so the Karamay formation can be divided into 3 middle cycles and 14 short cycles, then the isochronous stratigraphic framework are built. The short base level cycles which are located in the middle base level cycles have different remaining oil distribution in isochronous stratigraphic framework. The result shows that the detailed sedimentary work is the base for studying sequence stratigraphy. The reservoirs that are deposited in the high accommodation can have good isochronous and low intraformational heterogeneity, so, the remaining oil distribute in thin, small, nonproduc-ing or low degree of water flooded area. Meanwhile, the reservoir that is distributed in low accommodation can have poor isochronous and high intraformational heterogeneity, and which are composed of noncontemporaneous deposit, so, the remaining oil is distributed in low permeable reservoirs in form of lens.%克拉玛依油田经过半个世纪注水开发,已进入开发后期,提高采收率的关键是明确剩余油的分布规律.在对研究区克拉玛依组沉积相研究的基础上,分析了不同类型剖面结构代表的基准面变化规律,将该组的短期基准面旋回划分为2大类12个小类.短期基准面旋回的规律性变化

  14. The therapeutic effects of Sheng Jing Zhong Zi Tang in treating male infertility.

    Science.gov (United States)

    Yang, B; Zhang, C; Du, L; Xue, W; Zou, P

    2001-06-01

    Eight-seven cases of male infertility due to spermatopathy were treated with Sheng Jing Zhong Zi Tang (SJZZT [symbol: see text]) for 1-3 courses. The total effective rate was 95.40% (83/87). 56.32% (49/87) of their spouses got pregnant and the semen quality was markedly improved (P cortisol (C).

  15. Insights into microbial communities in suboxic and anoxic parts of the Dagang oilfield

    Science.gov (United States)

    Yao, Jun; Richnow, Hans

    2015-04-01

    The overall target of this research is to understand the ecology of facultative and anaerobic bacterial communities related to hydrocarbon degradation in a part of the Dagang oilfield. In the oilfield since many years large amounts of water and surfactants are injected for oil extraction. This mode of oil production will likely affect the microbial community structure in the semi-open recycling system. In the production water, aerobic and facultative anaerobic bacteria are abundant, but their ecological function in the reservoir is still not understood. For microbial enhanced oil recovery (MEOR) however, it is important to understand the role of these microbial communities in the reservoir. For characterising the microbial community, the abundances of bacteria, archaea, sulfate reducing bacteria (SRB) and methanogenic Archaea were measured by real-time quantitative PCR in both injection and oil water, meanwhile the functional gene P450 involved aerobic degradation was also determined using common PCR with specific primers. In this study, it found that injection well1095 has a higher abundance of bacteria, archaea, dsr A and mcr A than those in most of production water, suggesting that a majority of bacteria not growth in the reservoir. Furthermore, on the basis of functional gene measurement aerobic and anaerobic microorganisms were living together in the extreme oil reservoirs. In contrast, the percentage of dsr A to bacteria and mcr A to archaea in production well exceeds the number in most of production wells. These results indicate that some indigenous bacteria such as SRB and methanogen can adjust them to reservoir environments. Methanogenic Archaea are widespread in the anaerobic environment and play an important role in the terminal steps of organic matter degradation to form methane, while SRB are capable of mineralizing petroleum components. The analysis of the production water reveals that concentration of SO42- and NO3- in injection water is lower than

  16. Brief Introduction of PetroChina Yumen Oilfield

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ Yumen Oilfield having been developed for 67 years since 1939,was the first natural petroleum base of CNPC. The cumulative production of crude oil was 520 thousand tons in the first ten years after new China's foundation, taking up 95% of the overall production of the whole country in those days. In 1959, the crude oil production reached 1.4 million tons, which was 51% of China's crude oil in total.Since the 1960s, Yumen Oilfield has taken on the important mission of establishing big schools, big trial fields and big institutes, as well as producing new products and developing new techniques,accumulating knowledge and training special personnel and engineers. The Yumen experts in oil/gas exploration and staff members have successively participated in great battles for oil exploration in Daqing Oilfield, Sichuan Basin in Sichuan Province,western China, Changqing Oilfield, Qaidam Basin,the Turpan Depression and have provided other oilfields in China with nearly 100,000 engineers and over 4000 sets of various equipments, which made Yumen Oilfield best known as the cradle of China's petroleum industry. The Laojunmiao, Ya'erxia,Shiyougou, Baiyanghe, Shanbei and Qingxi oil pools in Yumen Oilfield have been put into production one after another, and the crude oil production reached 780,000 tons in 2005.

  17. Discussion on Petroleum Migration in Bamianhe Oilfield of Dongying Depression, East China

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Petroleum migration process of Bamianhe oilfield of Dongying depression, East China is evaluated on the basis of our detailed work on geochemistry of the crude oil and the source. Molecular tracers, especially nitrogen compounds, are employed in assessing style of oil migration and accumulation. Additionally, absolute quantitative results of heteroaromatics including dibenzofuran, dibenzothiophene and fluorene with similar basic frames to pyrrolic nitrogenic compounds are also used to evaluate the quantity of petroleum migration. According to apparent migration effects of the pyrrolic nitrogen compounds, it is indicated that most of Bamianhe oil was derived from potential source kitchen-Niu-zhuang sag, migrated and accumulated at Bamianhe fault belt through selective paths according to a main filling point displayed. Generally, upward migration trend from the main point along the south slope is noted. There are observable migration effects from Guangli subsag to the north Bamianhe and Yangjiaogou oilfields showing Guangli subsag was a secondary kitchen accounting for the oils in the north portion. Significant vertical migration effects shown in several cross sections demonstrate that faults well developed in the area play an important role in oil migration and accumulation. Unformality, sandstone reservoirs distributed locally also suggest important fairways in connecting sources with traps. The tectonic and a combination of tectonic and lithological mechanism are identified as the critical mechanisms in entrapping hydrocarbons. Migration trend suggested by nitrogenic compounds agrees well with analysis of lateral compositional variety and thermal maturity gradient. This study also confirms well with our previous studies. It is the location of source rocks, tectonic and stratigraphic characteristics that have a comprehensive control on the model of hydrocarbon migration and accumulation in Bamianhe oilfield. Results also show that the oils are mostly derived from

  18. Heterogeneity of sandy conglomerate reservoir and its influence on remaining oil distribution: A case study from Badaowan Formation in the mid-west of block Ⅱ in Karamay Oilfield%砂砾岩储层非均质性及其对剩余油分布的影响——以克拉玛依油田二中西区八道湾组为例

    Institute of Scientific and Technical Information of China (English)

    何辉; 宋新民; 蒋有伟; 彭仕宓; 李彦兰; 孙景民

    2012-01-01

    At present,the voidage-injection imbalance,interlayer interference and in-layer interference leaded by the reservoir heterogeneity are extremely highlighted during the production tail of sandy conglomerate reservoir in the mid-fan of alluvial fan.Taking the Jurassic Badaowan Formation in mid-west of the block II in Karamay Oilfield as an example,this paper studied the reservoir heterogeneity of alluvial fan sandy conglomerate reservoir.Based on outcrop observation,core description,electrofacies analysis,the single sand body description technique was used to divide the reservoir into 4 types of microfacies-lithofacies single sand body.Combining with the macroscopic and microscopic heterogeneity in different single sand body,the remaining oil were divided into 3 enriched types: Ⅰ-type braided channel gritstone facies,which has mesopore and small throat texture;Ⅱ-type braided channel fine sandstone facies,which has small pore and small throat texture;Ⅲ-type braided channel sandy conglomerate facies,which has small pore and fine throat texture.It is concluded that the type Ⅲ has the best water flooding effect and should be the main object of stabilizing oil production and controlling water cut,and the type I and Ⅱ,where the properties are relatively worse and the heterogeneity is stronger,should be the next potential target.Using this method of"recognizing the reservoir hetero-geneity and resolving it" as the breakthrough point to analyze the single sand body and the heterogeneity,which can provide better reference for forecasting the distribution of remaining oil in the sandy conglomerate reservoir.%冲积扇扇中砂砾岩油藏开发后期储层强非均质性引起的注采不平衡、层间干扰矛盾及层内差异等问题极为凸显。以克拉玛依油田二中西区八道湾组冲积扇扇中砂砾岩油藏为例,开展了储层非均质性精细表征研究。运用野外露头观察、岩心描述、测井相分析等,以单砂体刻画

  19. International Cooperation Strengthened to Develop Liaohe Oilfield's Economy

    Institute of Scientific and Technical Information of China (English)

    Li Dequn; LI Zhanshan

    1996-01-01

    @@ Liaohe Petroleum Exploration Bureau (hereinafter called Liaohe Oilfields) has paid great attention to setting up projects with organizations from outside China to conduct economic and technical exchange and cooperation in all fields, trying to enter the world market.

  20. Production Practice and Development Prospects of Shengtuo Oilfield

    Institute of Scientific and Technical Information of China (English)

    Tan Zhang

    1996-01-01

    @@ Development History Shengtuo Oilfield's production started in 1965 and commercial production by water injection was on stream in 1966. Up to now, four phases have been experienced:Natural drive phase (June 1965-June 1966)

  1. Micro-geological causes and macro-geological controlling factors of low-resistivity oil layers in the Puao Oilfield

    Institute of Scientific and Technical Information of China (English)

    Tan Fengqi; Li Hongqi; Liu Hongtao; Jiang Fucong; Yu Hongyan

    2009-01-01

    Low-resistivity oil layers are often missed in logging interpretation because of their resistivity close to or below the resistivity of nearby water layers. Typical low-resistivity oil layers have been found in the past few years in the Putaohua reservoir of the Puao Oilfield in the south of the Daqing placanticline by detailed exploration. Based on a study of micro-geological causes of low-resistivity oil layers, the macro-geological controlling factors were analyzed through comprehensive research of regional depositional background, geological structure, and oil-water relations combined with core, water testing, well logging, and scanning electron microscopy data. The results showed that the formation and distribution of Putaohua low-resistivity oil layers in the Puao Oilfield were controlled by depositional environment, sedimentary facies, diagenesis, motive power of hydrocarbon accumulation, and acidity and alkalinity of reservoir liquid. The low-resistivity oil layers caused by high bound-water saturation were controlled by deposition and diagenesis, those caused by high flee-water saturation were controlled by structural amplitude and motive power of hydrocarbon accumulation. Those caused by formation water with high salinity were controlled by the ancient saline water depositional environment and faulted structure and those caused by additional conductivity of shale were controlled by paleoclimate and acidity and alkalinity of reservoir liquid. Consideration of both micro-geological causes and macro-geological controlling factors is important in identifying low-resistivity oil layers.

  2. Ultrasonic tomography and its applications in oilfield

    Institute of Scientific and Technical Information of China (English)

    ZHONG Xing-fu; WU Ying-xiang; LI Dong-hui; LI Qiang; WANG Xing-guo

    2005-01-01

    UTT (Ultrasonic Tomography Tool) is widely used in the oil industry and can be used to inspect corrosion, casing wall damage, casing breakoff, and casing distortion in the well borehole with the maximum environment temperature being 125℃, and the pressure being 60 MPa. UTT consists of tool head, upper centralization, electronic section, lower centralization, transmitters,and receivers. Its outer diameter is 4.6 cm and length is 320 cm. The measured casing diameter ranges from 60 mm to 254 mm. The tomography resolution is 512×512. The borehole measurement accuracy is 2 mm. It can supply 3D pipe tomography, including horizontal and vertical profile. This paper introduces its specification, measurement principle, and applications in oilfield.

  3. Components and Treatments of Oilfield Produced Water

    Directory of Open Access Journals (Sweden)

    Essam Abdul-Jalil Saeed

    2010-01-01

    Full Text Available In this study, a review of variety of processes that are used in the treatment produced water prior to reuse or to responsible disposal are presented with their environmental issues and economical benefits. Samples of produced water from five locations in Rumaila oilfield/in south of Iraq were taken and analyzed for their contents of brine, some heavy metals, total suspended solids and oil and grease. Moreover, two samples of water were treated using reverse osmosis technique which showed its ability to treat such contaminated water. The results showed that the environmental impact of produced water arises from its chemical composition; i.e., its salt content, its heavy metals, and hydrocarbon contents.

  4. Applications of piezoelectric materials in oilfield services.

    Science.gov (United States)

    Goujon, Nicolas; Hori, Hiroshi; Liang, Kenneth K; Sinha, Bikash K

    2012-09-01

    Piezoelectric materials are used in many applications in the oilfield services industry. Four illustrative examples are given in this paper: marine seismic survey, precision pressure measurement, sonic logging-while-drilling, and ultrasonic bore-hole imaging. In marine seismics, piezoelectric hydrophones are deployed on a massive scale in a relatively benign environment. Hence, unit cost and device reliability are major considerations. The remaining three applications take place downhole in a characteristically harsh environment with high temperature and high pressure among other factors. The number of piezoelectric devices involved is generally small but otherwise highly valued. The selection of piezoelectric materials is limited, and the devices have to be engineered to withstand the operating conditions. With the global demand for energy increasing in the foreseeable future, the search for hydrocarbon resources is reaching into deeper and hotter wells. There is, therefore, a continuing and pressing need for high-temperature and high-coupling piezoelectric materials.

  5. Realize Tarim Oilfield Take-off

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ PetroChina Tarim Oilfield Company, former Tarim Petroleum Exploration & Development Bureau founded in April 1989, is one of the regional subsidiaries under PetroChina Company Limited (PetroChina). It is a large-scale oil company integrated in petroleum exploration and development, oil refining, production of petrochemicals, technological study and marketing business. Headquartered on the bank of Peacock River in Korle City of Xinjiang Uygur Autonomous Region, the company operates itself in more than 20 counties of five prefectures around Tarim Basin. It has since its foundation adhered to the principles of "adopting new management system and new technology, as well as realizing high-grade and high-efficiency battle for oil", implemented market operation, contract management,professional service, and socialization dependence.

  6. Oilfield Flare Gas Electricity Systems (OFFGASES Project)

    Energy Technology Data Exchange (ETDEWEB)

    Rachel Henderson; Robert Fickes

    2007-12-31

    The Oilfield Flare Gas Electricity Systems (OFFGASES) project was developed in response to a cooperative agreement offering by the U.S. Department of Energy (DOE) and the National Energy Technology Laboratory (NETL) under Preferred Upstream Management Projects (PUMP III). Project partners included the Interstate Oil and Gas Compact Commission (IOGCC) as lead agency working with the California Energy Commission (CEC) and the California Oil Producers Electric Cooperative (COPE). The project was designed to demonstrate that the entire range of oilfield 'stranded gases' (gas production that can not be delivered to a commercial market because it is poor quality, or the quantity is too small to be economically sold, or there are no pipeline facilities to transport it to market) can be cost-effectively harnessed to make electricity. The utilization of existing, proven distribution generation (DG) technologies to generate electricity was field-tested successfully at four marginal well sites, selected to cover a variety of potential scenarios: high Btu, medium Btu, ultra-low Btu gas, as well as a 'harsh', or high contaminant, gas. Two of the four sites for the OFFGASES project were idle wells that were shut in because of a lack of viable solutions for the stranded noncommercial gas that they produced. Converting stranded gas to useable electrical energy eliminates a waste stream that has potential negative environmental impacts to the oil production operation. The electricity produced will offset that which normally would be purchased from an electric utility, potentially lowering operating costs and extending the economic life of the oil wells. Of the piloted sites, the most promising technologies to handle the range were microturbines that have very low emissions. One recently developed product, the Flex-Microturbine, has the potential to handle the entire range of oilfield gases. It is deployed at an oilfield near Santa Barbara to run on waste gas

  7. FORECASTING THE PERFORMANCE OF AN OIL FIELD, COMPARISON OF VARIOUS USED METHODS: THE CASE OF SHUANGHE OILFIELD, CHINA

    Directory of Open Access Journals (Sweden)

    Theoneste Nzayisenga

    2014-01-01

    Full Text Available While being the dominant source of energy, oil has also brought affluence and power to different societies. Energy produced from oil is fundamental to all parts of society. In the foreseeable future, the majority of energy will still come from oil production. Consequently, reliable methods for forecasting that production are crucial. Petroleum engineers have searched for simple but reliable way to predict oil production for a long time. Many methods have been developed in the latest decades and one common practice is decline curve analysis. Prediction of future production of petroleum wells is important for cost-effective operations of the petroleum industry. This work presents a comparative analysis of methods used to predict the performance of Shuanghe oilfield, China. Using decline curve analysis including three different methods: Arps empirical methods, LL-model and simplified model and the new simplified model, LL-Model, to crosscheck Arps exponential decline model prediction results. The results showed by the comparative analysis of predictions calculated proved LL-model to be the best predictor for Shuanghe oilfield since it takes into account more parameters than the old models used in this work. However, the subsurface information or parameters of the reservoir used in LL-model may not be available every time, therefore Arps models may apply as defined. In Shuanghe oilfield calculated average geological reserves N was estimated at 9449.41 ×104 tons, the average recoverable reserves NR were estimated to 4274.61×104 tons while the water cut was 97% and the water cut predicted by LL-model was 96.7%; not far from water flooding curves value. The exponential decline model showed recoverable reserves NR estimated around 4685.88×104 tons of oil while the decline phase of total development was estimated around 34 years which means that if the actual production conditions remain unchanged, Shuanghe oilfield would continue producing for

  8. 3-D Reservoir and Stochastic Fracture Network Modeling for Enhanced Oil Recovery, Circle Ridge Phosphoria/Tensleep Reservoir, and River Reservation, Arapaho and Shoshone Tribes, Wyoming

    Energy Technology Data Exchange (ETDEWEB)

    La Pointe, Paul R.; Hermanson, Jan

    2002-09-09

    The goal of this project is to improve the recovery of oil from the Circle Ridge Oilfield, located on the Wind River Reservation in Wyoming, through an innovative integration of matrix characterization, structural reconstruction, and the characterization of the fracturing in the reservoir through the use of discrete fracture network models.

  9. Reservoir Characteristic of Famennian Deposits of the Solikamsk Depression

    Directory of Open Access Journals (Sweden)

    A. V. Plyusnin

    2015-06-01

    Full Text Available The article describes the reservoir rock properties of Famennian (Late Devonian reef carbonate strata obtained by core study at boreholes № 1-4 of the Sukharev oil field. Based on the results of detailed study of lithological features of productive strata, authors defined the structural types and composed their description. The characteristics of the porosity and permeability of oil-bearing beds were shown. In a result of studies, the structure and main lithotypes of Famennian portion of reservoir were determined that allowed predicting the spatial distribution of reservoir properties within oilfield area.

  10. Logging Geology Study of the Caverned Paleokarst Reservoir Distribution

    Institute of Scientific and Technical Information of China (English)

    WuXinsong; YangLei; PanWenqing; GuQiaoyuan

    2005-01-01

    In recent years, many carbonate rock oilfields such as Lunnan and Tahe have been found in the Tarim Basin, and the main reservoir space of the stable high yield wells in these oilfields consists mainly of the caverns formed by the paleo-karstification and the dissolution pores and fractures connected with them. Nevertheless, it is difficult to predict effectively the distribution of the cavern reservoir because of its extremely serious heterogeneity. In this paper, a case study of the Lunxi Oilfield in the north uplift of the Tarim Basin is conducted to introduce the logging geology method for predicting the distribution of the caverned paleokarst, reservoir. By means of building up the logging recognition style of different caverns and differentiating and correlating the karst zones with logging curves, and through an analysis of the paleokarst topography background, the favorable karst zones and distribution areas of the high quality cavern reservoir have been located, which lays a new basis for further exploration in this area.

  11. Arabian-Anatolian plate movements and related trends in Southeast Turkey's oilfields

    Energy Technology Data Exchange (ETDEWEB)

    Coskun, Bulent [Ankara Univ., Geological Engineering Dept., Ankara (Turkey)

    2004-09-15

    Two important tectonic phases generated by African and Arabian plate movements influenced the evolution of trends in SE Turkey's oilfields. The main phase occurred during the late Cretaceous (Maastrichtian) time, while the second phase reactivated the existing trends in Miocene. Paleogeological evolutions reveal that SE Turkey was tectonically stable from Paleozoic up to the end of Cretaceous, during which the structural trends were oriented in a WSW-ENE direction, contrarily, under the influence of opening of the Red Sea area, the existing trends rotated in a counterclockwise direction and oriented in a SW-NE direction. This rotational tectonic event is evidenced by SW-NE alignments of SE Turkey's oilfields in subsurface and Karacadag basaltic expansions and appearance of major faults, like the Dead Sea fault, Adiyaman fault, and Akcakale fault, on surface. Subsurface interpretations indicate that, contrarily to the previous works, which considered the Dead Sea fault and Adiyaman fault separate tectonic features from each other and also attached them to the East Anatolian fault, the Adiyaman fault is the continuity of the Dead Sea fault through the Adiyaman, Diyarbakir and Selmo areas. The Akcakale fault, which generated the Karacadag basaltic flows, is another tectonic element and has influenced the exploration activities in SE Turkey. Moreover, detailed interpretations of well data reveal that the SW-NE structural trends also improved reservoir conditions by creating fractures and dolomitizations in reservoir rocks, and the high geothermal and potential (piezometric) gradients and porosity trends are also aligned in the same direction. (Author)

  12. Investigation on infection of Bartonella in Shengli oilfields%胜利油区巴尔通体检测及感染现状调查

    Institute of Scientific and Technical Information of China (English)

    杨爱国

    2008-01-01

    目的 研究的对象为胜利油田特殊的人群,研究的内容为巴尔通体的感染率.方法 运用酶标技术、分子生物学中的PCR技术对人的样品进行检测.结果 采集居住野外环境240人份,阳性为29份,阳性率为12.08%(29/240),采集城市生活区210人份,阳性为2份,阳性率为0.47%(2/210),居住野外环境人群巴尔通体感染率明显高于城市生活区(x2=4.52,P<0.01).男性224份,阳性率5.36%(12/224),女226份,阳性率为8.41(19/226),(x2=1.52,P>0.05),无显著性差异.结论 通过调查,胜利油田职工高危人群存在巴尔通体感染.

  13. New progress of microbial prospecting of oil and gas in China:Taking the Satellite Oilfield in Daqing as an example

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The Microbial Prospecting of Oil and Gas(MPOG) is applied to the matured development area in the Satellite Oilfield in Daqing for the first time. And with the MPOG,the hydrocarbon accumulation regulation controlled by faults is interpreted,and the matured development area is extended out to western part. At the same time,four microbial anomalies are discovered. The MPOG results were verified by the hydrocarbon-bearing conditions of the 10 drilled wells within the following half a year,and the consistent rate is up to 80%,which add about 300×104 t of the explored petroleum-in-place. Through study and successful application of MPOG to the Satellite Oilfield,the basis of the application from the exploration to development field is substantially established,and standard system of microbial anomaly is more precisely built for the Satellite Oilfield,which provided an effective explanatory item for the studied and adjacent region,even for the whole Songliao Basin,and also a new technique for complicated reservoirs,especially for the later stage development of litho-reservoirs in China. Therefore,it must have profound influence upon the oil and gas exploration,especially upon the remaining oil,extension and reserves addition of the developed area in China.

  14. Exploitation and Utilization of Oilfield Geothermal Resources in China

    Directory of Open Access Journals (Sweden)

    Shejiao Wang

    2016-09-01

    Full Text Available Geothermal energy is a clean, green renewable resource, which can be utilized for power generation, heating, cooling, and could effectively replace oil, gas, and coal. In recent years, oil companies have put more efforts into exploiting and utilizing geothermal energy with advanced technologies for heat-tracing oil gathering and transportation, central heating, etc., which has not only reduced resource waste, but also improved large-scale and industrial resource utilization levels, and has achieved remarkable economic and social benefits. Based on the analysis of oilfield geothermal energy development status, resource potential, and exploitation and utilization modes, the advantages and disadvantages of harnessing oilfield geothermal resource have been discussed. Oilfield geothermal energy exploitation and utilization have advantages in resources, technical personnel, technology, and a large number of abandoned wells that could be reconstructed and utilized. Due to the high heat demand in oilfields, geothermal energy exploitation and utilization can effectively replace oil, gas, coal, and other fossil fuels, and has bright prospects. The key factors limiting oilfield geothermal energy exploitation and utilization are also pointed out in this paper, including immature technologies, lack of overall planning, lack of standards in resource assessment, and economic assessment, lack of incentive policies, etc.

  15. Diagenesis of deep sandstone reservoirs and a quantitative model of porosity evolution: Taking the third member of Shahejie Formation in the Wendong Oilfield, Dongpu Sag, as an example%深层储集层成岩作用及孔隙度演化定量模型——以东濮凹陷文东油田沙三段储集层为例

    Institute of Scientific and Technical Information of China (English)

    王瑞飞; 沈平平; 赵良金

    2011-01-01

    The diagenesis and porosity evolution in the deep 3rd member of Shahejie Formation of the Wendong Oilfield was analyzed using thin-sections, casting thin-sections, X-ray diffractometry, scanning electron micrograph observations, and other data. Sandstone reservoirs are currently at the late diagenetic period. Pores consist of primary pores and the inter-granular dissolved and intra-granular dissolved pores of feldspar, debris and carbonate cements. Physical properties are mainly controlled by carbonate cementation and dissolution, and distribution of abnormally high fluid pressure. The evolution of porosity parameters shows that primary porosity is 36.75%, the porosity loss rate is 40.49% during the process of mechanic compaction, the porosity loss rate is 37.25% during the process of cementation and metasomasis, and the porosity increase rate is 17.88% during the process of dissolution. The proportion of primary porosity is 55.03%, and that of the secondary porosity is 44.97%. The error rate in the quantitative study of porosity is 0.96%, and the main influencing factor of the error rate is sorting coefficient of detrital rock (So).%利用普通薄片、铸体薄片、X射线衍射、扫描电镜等资料,分析东濮凹陷文东油田沙三段深层储集层砂岩成岩作用和孔隙演化过程.研究表明,储集层砂岩目前处于晚成岩阶段,储集层发育原生粒间孔隙和长石、岩屑、胶结物等不稳定组分的粒间溶孔、粒内溶孔.储集层物性分布受碳酸盐等的胶结、溶蚀及异常高压带分布的控制.孔隙度参数演化分析表明,储集层初始孔隙度为36.75%,压实过程孔隙度损失率为40.49%,胶结-交代过程孔隙度损失率为37.25%,后期溶蚀、溶解过程孔隙度增加率为17.88%.储集空间中原生孔隙占总孔隙的55.03%,次生孔隙占总孔隙的44.97%.孔隙度计算过程中误差率为0.96%,影响误差的主要因素为颗粒分选系数.

  16. Integrated GPS and SAR Interferometry to Measure Time-varying Surface Deformation Over a Giant Oilfield in California*

    Science.gov (United States)

    Fielding, E. J.; Patzek, T. W.; Patzek, T. W.; Silin, D. B.; Brink, J.

    2001-12-01

    We combine campaign GPS measurements with interferometry synthetic aperture radar (IntSAR) images to map the deformation around and above the Lost Hills oilfield, one of the biggest fields in the USA. GPS at several dozen benchmarks every six months provides a long time series of total vertical and horizontal position change for monuments in the rapidly subsidng ground surface above the oilfield. IntSAR maps using data from the ERS satellites measure relative changes at high spatial resolution with some moderate- to long-wavelength noise sources such as orbit error and atmospheric delays. The GPS data are used to model the moderate to long-wavelength surface deformation field so that the error contributions at those wavelengths in the IntSAR images can be estimated and removed. The rapid subsidence (rates greater than 1 mm/day in 1995) and small size (roughly 3 km wide by 10 km long) require the use of short time intervals for the IntSAR pairs (between 35 days and 8 months), and also processing with the smallest possible sample spacing of 20 by 20 meters to resolve the extreme strain rates. Previously published comparison of the tiltmeter measurements with well fluid extraction demonstrated both an immediate elastoplastic response to depletion and a time-dependent creep response. The high spatial and temporal resolution of the IntSAR measurements will be combined with well records on fluid extraction and injection to separate the delayed response from the immediate reponse to better understand the processes of compaction in the oil reservoir rocks, extremely high-porosity diatomite. This will have direct relevance to the oilfield operations as the compaction can damage the wells and should be minimized. Surprisingly, in some parts of the oilfield, injecting more water to replace the pressure of the oil and gas extracted causes the subsidence rates to increase. Because the fluid input and output at the oilfield is measured, it provides an excellent test bed for

  17. Study on the Land Reclamation of Oilfield of Gurbantunggut Desert in Junggar Basin

    Institute of Scientific and Technical Information of China (English)

    Liang; LI; Xuezhong; ZHENG; Xusheng; SHAO; Caichuan; WANG; Min; Xu

    2013-01-01

    The exploration and development of oilfield results in damages to land resources. Along with the further development of petroleum in the Gurbantunggut Desert, the fragile ecological environment and land resource was suffering much more damage. Vegetation degradation and desertification become more prominent. In response to the damage to the fragile ecological environment and oilfield in the Gurbantunggut Desert, limit condition method was used to evaluate the suitability of land reclamation suitability. Results suggested that the main restraining factors for land reclamation were soil condition and water resources. Based on the effect and shortage of oilfield in the Gurbantunggut Desert Oilfield, the reclamation of oilfield in the Gurbantunggut desert was discussed.

  18. Simulation of CO2-Distribution in Fractured Oil Reservoir

    OpenAIRE

    Furuvik, Nora; Halvorsen, Britt

    2015-01-01

    Deep geologic injections and storage of Carbon dioxide (CO2) for enhanced oil recovery (EOR) are an upcoming combination due to the potential for increased oil production from depleted oilfields at the same time reducing the carbon footprint from industrial sources. CO2-EOR refers to a technique for injection of supercritical-dense CO2 into an oil reservoir. Remaining oil, not producible by primary and secondary techniques, has been successfully produced using EOR with CO2 since early 1970??....

  19. Effects of Biodegradation on Crude Oils from Karamay Oilfield

    Institute of Scientific and Technical Information of China (English)

    杨斌; 杨坚强; 等

    1989-01-01

    Studies of biological marker compou nds in five oil samples from a profile wherenormal crude oil,low condensate oil and heavy oil are produced in the Karamay Oilfield have been carried out with great empha-sis on the biodegradation-resisting capability of 13,17 secosteranes,8,14 secohopanes,gammacerane and carotenes.Based on these studies,a sequence of biodegradation-resisting intensities has been established for saturated hydrocarbon biomarkers in crude oils from the Karamay Oilfield.

  20. [Textual research on Costus root (Aucklandia lappa Decne) in the Sheng nong ben cao jing (Shennong's Classic of Materia Medica)].

    Science.gov (United States)

    Li, Guangyan; Wang, Dequn; Fang, Shiying; Xu, Maohong

    2014-05-01

    Aucklandia lappa Decne was first recorded in the Sheng nong ben cao jing (Shennong's Classic of Materia Medica). Through the textual research of herbal literature, it was found that the costus root in the Sheng nong ben cao jing perhaps was not the plant of Aucklandia lappa Decne of Compositae, but the eaglewood or Lignum Aquilasria Resinatum based on the comprehensive judgment of shape, taste, nature, and function etc. In the Sheng nong ben cao jing, it only includes costus root without the title of eaglewood, and Tao Hongjing recorded both herbs together in his Ming yi bie lu (Supplementary Records of Celebrated Physicians), which became a foreshadow of misunderstanding of the later generations. Beginning from the Tang ben cao (Materia Medica of the Tang Dynasty), the costus root was considered as the plant of Auckiandia lappa Decne from the Compostae with its profound influence until now.

  1. The Therapeutic Effects of Sheng Jing Zhong Zi Tang in Treating Male Infertility

    Institute of Scientific and Technical Information of China (English)

    杨保存; 张彩霞; 杜雷; 薛武军; 邹鹏

    2001-01-01

    Eight-seven cases of male infertility due to spermatopathy were treated with Sheng Jing Zhong Zi Tang (SJZZT生精种子汤) for 1-3 courses. The total effective rate was 95.40% (83/87). 56.32% (49/87) of their spouses got pregnant and the semen quality was markedly improved (P<0.01). The results showed that the decoction could dual-directionally regulate the levels of follicle-stimulating hormone (FSH), prolan B luteinizing hormone (LH), testosterone (T), and cortisol (C).

  2. Application of Seismic Data to Reservoir Modeling of the Chegu 201 Block

    Institute of Scientific and Technical Information of China (English)

    CaiYi; ZhangXiangzhong; ZhangXinshang

    2005-01-01

    Great uncertainty exists in reservoir models built for blocks where well spacing is uneven or large. The uncertainty in reservoir models can be significantly reduced by using Coordinate Cokriging Sequential Gaussian Simulation technology, in combination with the restriction of seismic characteristic data. Satisfactory reservoir parameter interpolation results, which are more accurate than those derived only from borehole data, are obtained, giving rise to a reasonable combination of widespread and dense-sampled seismic (soft data) data with borehole data (hard data). A significant effect has been made in reservoir parameter modeling in the Chegu 201 block of the Futai Oilfield by using this technology.

  3. Gathering and Transportation Technology of Heavy Oil in Liaohe Oilfield

    Institute of Scientific and Technical Information of China (English)

    Luo Jingyi; Li Mingyi

    1995-01-01

    @@ General Liaohe Oilfield is abundant in heavy oil resources which mainly distribute in the blocks of Jinzhou, Huanxiling, Shuguang, Xinglongtai,Gaosheng etc. In 1993,the output of heavy oil was 700×104 t,ranking the first in the nation.

  4. Application of Horizontal Well Technology to Liaohe Oilfield

    Institute of Scientific and Technical Information of China (English)

    HanYun

    2008-01-01

    @@ Horizontal well technology has become one of the main technologies enabling Liaohe Oilfield to realize stable development. By the end of 2006, 296 horizontal wells of various kinds had been completed in Liaohe Oil Field,273 wells had been put into production, Among uhich 237 were horizontal wells (see Table 1).

  5. China Oilfield Chemical Company--A Unified Company for Development,Production and Selling of Oilfield Chemicals

    Institute of Scientific and Technical Information of China (English)

    Li Guozhang

    1994-01-01

    @@ China Oilfield Chemical Company (COCC) is a subsidiary company of China National Petroleum Corporation (CNPC), approved by the former Production Office of the State Council for its establishment. It is an enterprise with state ownership and having qualification of a legal person registered in the State Industry and Commerce Administration. The Company's headquarters is located in Beijing.

  6. Produced Water Reinjection--the Way Out

    Institute of Scientific and Technical Information of China (English)

    Xia Huilan

    1997-01-01

    @@ It is the best way to make comprehensive utilization of produced water, save water and protect environment by treating oily produced water so as to make it meet the quality criteria for the water reinjected into the reservoir. So far, more than 46 produced water treatment stations and 148 reinjection stations have been built at Shengli oilfields.

  7. Analysis of methane production by microorganisms indigenous to a depleted oil reservoir for application in Microbial Enhanced Oil Recovery.

    Science.gov (United States)

    Kobayashi, Hajime; Kawaguchi, Hideo; Endo, Keita; Mayumi, Daisuke; Sakata, Susumu; Ikarashi, Masayuki; Miyagawa, Yoshihiro; Maeda, Haruo; Sato, Kozo

    2012-01-01

    We examined methane production by microorganisms collected from a depleted oilfield. Our results indicated that microorganisms indigenous to the petroleum reservoir could effectively utilize yeast extract, suggesting that the indigenous microorganisms and proteinaceous nutrients could be recruitable for Microbially Enhanced Oil Recovery. Copyright © 2011 The Society for Biotechnology, Japan. Published by Elsevier B.V. All rights reserved.

  8. Hydrogen isotopic compositions, distributions and source signals of individual n-alkanes for some typical crude oils in Lunnan Oilfield, Tarim Basin, NW China

    Institute of Scientific and Technical Information of China (English)

    LU; Hong; LI; Chao; SUN; Yongge; PENG; Ping'an

    2005-01-01

    Isotopic compositions of carbon-bound hydrogen in individual n-alkanes from several typical crude oil samples from Lunnan Oilfield, Tarim Basin, NW China, were firstly measured using newly developed gas chromatography-thermal conversion-isotope ratio mass spectrometry. The similar range of δD of individual n-alkanes of crude oils among reservoirs of different geological times reflects that hydrocarbons are all derived from the same marine depositional environment. Compared to the theoretic value (-150‰) and the reported δD values (nC13―nC27, -160‰―-90‰) of individual n-alkanes for Ordovician-sourced crude oils in the Canadian Williston Basin, the hydrogen isotopic composition of individual n-alkanes in crude oils from Lunnan Oilfield is characterized by heavy hydrogen isotopic values (nC12―nC27, -120‰―-60‰). In terms of the factors that control the fractionation of hydrogen isotopes, relatively saline depositional environment and higher thermal maturation were attributed to the heavy δD values of individual n-alkanes in crude oils from Lunnan Oilfield.

  9. Sequence Stratigraphy of lower zones of Asmari Formation in Marun Oilfield by using of microfacies analysis, isolith maps and γ- Ray log

    Directory of Open Access Journals (Sweden)

    Ahmad Mirmarghabi

    2015-02-01

    Full Text Available The Oligo- Miocene Asmari Formation is one of the most important reservoir units of the Marun Oilfield in Dezful Embayment SW Iran, deposited in Zagros foreland basin. The goal of this study is to interpret depositional environment and sequence stratigraphy of lower zones of the Asmari Formation in Well No.281, 342 and 312in Marun Oilfield based on changes in the shape of γ- Ray, isolith maps and microfacies properties. Accordingly, identification of 9 carbonate microfacies and 2 siliciclastic petrofacies were identified that are deposited in four depositional environment including open marine, barrier, lagoon and tidal flat in a homoclinal ramp (consisting of outer, middle and inner ramp. Also, based on the shape of γ- Ray log, There sediment were deposited in marine environment. In open marine and barrier environments, The shape of γ- Ray log is serrated bell-shaped, serrated funnel-shaped, left bow-shaped, serrated shape and right boxcar shape, Whole in the beach environment it is cylinder and funnel shape and in lagoon and tidal flat environment can be seen on right bow to cylinder-shaped. Based on the isolith maps, sandstone of lower zones of the Asmari Formation in Marun Oilfield expanded by deltaic system along the southwestern margin of the basin and influenced by changes in sea level constantly. Sequence stratigraphic analysis led to identification of three third- order (DS1, DS2 and DS3 depositional sequences.

  10. 腰英台油田注入水标准研究%Research on injection water standard in Yaoyingtai oilfield

    Institute of Scientific and Technical Information of China (English)

    孙艳秋; 张婷婷

    2012-01-01

    Yaoyingtai oilfield, located in the Changling sag of southern Songliao basin, is a lithologic-structure compound reservoir. Through water quality analysis, scaling prediction and tests of anti-swelling and injuries, this paper conducted researches on the quality of injection water and production water in Yaoyingtai oilfield, optimized the fungicide, corrosion and scale inhibitors, and anti-swelling agent, formulated injection water quality standards according to the actual situation of Yaoyingtai oilfield, and then pointed out that controlling the mid-values of particles and bacteria content is the key to injection water.%腰英台油田位于松辽盆地南部长岭凹陷,为岩性-构造复合型油气藏。通过水质分析、结垢预测、防膨试验、伤害试验等对腰英台油田的注入水和产出水水质进行研究,对杀菌剂、缓蚀剂、阻垢剂、防膨剂进行优选,制定出符合腰英台油田实际情况的注入水水质标准,控制好颗粒中值和细菌含量是注入水的关键。

  11. Anisotropic rock physics models for interpreting pore structures in carbonate reservoirs

    Institute of Scientific and Technical Information of China (English)

    Li Sheng-Jie; Shao Yu; Chen Xu-Qiang

    2016-01-01

    We developed an anisotropic effective theoretical model for modeling the elastic behavior of anisotropic carbonate reservoirs by combining the anisotropic self-consistent approximation and differential effective medium models. By analyzing the measured data from carbonate samples in the TL area, a carbonate pore-structure model for estimating the elastic parameters of carbonate rocks is proposed, which is a prerequisite in the analysis of carbonate reservoirs. A workfl ow for determining elastic properties of carbonate reservoirs is established in terms of the anisotropic effective theoretical model and the pore-structure model. We performed numerical experiments and compared the theoretical prediction and measured data. The result of the comparison suggests that the proposed anisotropic effective theoretical model can account for the relation between velocity and porosity in carbonate reservoirs. The model forms the basis for developing new tools for predicting and evaluating the properties of carbonate reservoirs.%♦Corresponding author: Li Sheng-Jie (Email: Richard@cup.edu.cn)

  12. The Shengli I Point Bar on the Yellow River Delta: Three-Dimensional Structures and Their Evolution

    Institute of Scientific and Technical Information of China (English)

    钟建华; 沈晓华; 倪晋仁; 王冠民; 温志峰; 王夕宾; 王海桥; 李理; 吴孔友; 李勇; 洪梅

    2002-01-01

    Point bars are well developed on the Yellow River delta, among which the Shengli I point bar is the mosttypical. The point bar, being about 4 km in length and several tens to more than 100 meters in width, is located on the southside of the Shengli Bridge in Kenli County, Dongying, Shandong. It is a typical fine-grained point bar with silt, which ispredominant, some clay and minor plant debris and clay boulders. The Shengli I point bar has complicated 3-D structures.Firstly, in a plane view, it comprises mainly eight sedimentary units, bar edge, bar ridge, bar platform, bar plain, bar channel,bar gully, bar pond and bar bay, developing side by side and superimposed one by one in a complex way. Secondly, itsvertical structures are very complex due to the partial superimposition of the 8 sedimentary units. Besides hydatogenesis, veryintensive wind erosion, eolian, ice and meltwater actions are also visible on the Shengli I point bar. The complex form is madeeven more complicated because of the above co-actions.

  13. Predicting the distribution of reservoirs by applying the method of seismic data structure characteristics: Example from the eighth zone in Tahe Oilfield%应用地震数据体结构特征法预测塔河油田八区油层分布规律

    Institute of Scientific and Technical Information of China (English)

    林昌荣; 王尚旭; 张勇

    2006-01-01

    地震数据体结构特征,指对二维或三维地震数据体中每一地震道离散数据点按时间顺序排列所显示的波形特征.应用地震数据体结构特征法对储层进行油气预测,是近年来新兴的一项储层预测技术.塔河油田八区的主产层为碳酸盐岩裂缝-缝洞型储层,具有很强的非均质性,给储层的油气预测带来了一定的困难.针对塔河油田八区特殊的地质条件,采用了地震数据体结构特征法对该区奥陶系储层进行了油气预测,并对油区内、外的区域进行了有利区块的划分.在有利区块中设计的18口钻探井位,经钻井证实均获得了较高的油气产量,取得了很好的经济效益.%Seismic data structure characteristics means the waveform character arranged in the time sequence at discrete data points in each 2-D or 3-D seismic trace. Hydrocarbon prediction using seismic data structure characteristics is a new reservoir prediction technique.When the main pay interval is in carbonate fracture and fissure-cavern type reservoirs with very strong inhomogeneity, there are some difficulties with hydrocarbon prediction. Because of the special geological conditions of the eighth zone in the Tahe oil field, we apply seismic data structure characteristics to hydrocarbon prediction for the Ordovician reservoir in this zone. We divide the area oil zone into favorable and unfavorable blocks. Eighteen well locations were proposed in the favorable oil block, drilled, and recovered higher output of oil and gas.

  14. Inversion of inherited thrusts by wastewater injection induced seismicity at the Val d’Agri oilfield (Italy)

    Science.gov (United States)

    Buttinelli, M.; Improta, L.; Bagh, S.; Chiarabba, C.

    2016-11-01

    Since 2006 wastewater has been injected below the Val d’Agri Quaternary basin, the largest on-land oilfield in Europe, inducing micro-seismicity in the proximity of a high-rate injection well. In this study, we have the rare opportunity to revise a massive set of 2D/3D seismic and deep borehole data in order to investigate the relationship between the active faults that bound the basin and the induced earthquakes. Below the injection site we identify a Pliocene thrusts and back-thrusts system inherited by the Apennines compression, with no relation with faults bounding the basin. The induced seismicity is mostly confined within the injection reservoir, and aligns coherently with a NE-dipping back-thrust favorably oriented within the current extensional stress field. Earthquakes spread upwards from the back-thrust deep portion activating a 2.5-km wide patch. Focal mechanisms show a predominant extensional kinematic testifying to an on-going inversion of the back-thrust, while a minor strike-slip compound suggests a control exerted by a high angle inherited transverse fault developed within the compressional system, possibly at the intersection between the two fault sets. We stress that where wastewater injection is active, understanding the complex interaction between injection-linked seismicity and pre-existing faults is a strong requisite for safe oilfield exploitation.

  15. 八面河油田面4-14区沙四段1砂组储层认识及潜力评价%Reservoir Recognition and Development Potential of 1st Sand Group of Sha-4 Member of Mian 4-14 in Bamianhe Oilfield

    Institute of Scientific and Technical Information of China (English)

    李加玉

    2015-01-01

    Although 1st sand group has a large oil -bearing area with a large amount of oil reserves ,its per-well production is low and its reserve utilization is poor .This paper carries out reservoir research ,calcula‐tion of reserves and potential evaluation in the zone with the purpose of improving its development .On the basis of the research of four reservoir properties and comparison of sand layers ,distribution rules of reser‐voir spread ,its thickness ,its porosity and its oil saturation are determined .Combined with production per‐formance ,favorable zones are identified and then effective way of increasing the capacity of both per -well production and area production is presented in light of test analysis of well or well group water injection and thermal recovery .%八面河油田面4-14区沙四段1砂组含油面积大、储量多,单井产量普遍较低,储量动用差。为改善开发效果,开展储层研究、储量计算、区带潜力评价。通过储层“四性”关系研究和砂层对比,确定储层展布、油层厚度、孔隙度、含油饱和度分布规律;结合生产动态,圈定有利区带;结合井(组)注水、热采试验分析,提出提高单井和区块产能的有效方法。

  16. Aerobic activation of endogenous microorganisms in middle and high temperature reservoir%中高温油藏内源微生物好氧激活技术研究

    Institute of Scientific and Technical Information of China (English)

    王静; 段传慧; 李彩风; 高光军

    2016-01-01

    In order to study the endogenous microbial aerobic activation characteristics in middle and high temperature reservoir,12 typical blocks in high temperature reservoirs in Shengli Oilfield were selected to carry out the aerobic activation evaluation.Three reservoir temperature range were selected,namely from 55 to 65 ℃,65 to 79 ℃ and 79 to 95 ℃.6 different carbon sources were selected as the main activator:different activator formulation was prepared.Under the simulated reservoir conditions of aerobic activation evaluation,we found that the additional nutrient agent of corn syrup, molasses and yeast powder could effectively activate the functional strain below 79 ℃ oil reservoir blocks,the cell density could reach 3× 109 cell/mL.The emulsifying and dispersing effect of crude oil was obvious. In oil reservoir blocks above 79 ℃,the activation effect and emulsifying effect of crude oil were generally worse than that in 79 ℃ oil reservoir blocks.The cell density and emulsifying effect after activation show a positive correlation in each block center,whereas the surface tension and emulsifying effect had no obvious correlation. The surface tension of the solution after aerobic activation was reduced from 65 mN/m to 47 mN/m. The dominant bacteria after aerobic activation were mainly Geobacillus and Bacillus thermoamylovorans.%为了掌握中高温油藏内源微生物好氧激活特征,在胜利油田选取12个中高温油藏典型区块开展了好氧激活评价:在所选油藏温度范围分别为55~65℃、65~79℃、79~95℃,通过模拟油藏条件下好氧激活评价发现:在小于79℃油藏区块中,以玉米浆干粉、糖蜜、酵母粉等作为外加营养剂能够有效激活水样中的功能菌株,激活后菌密度最高能够达到3×109个/mL,原油乳化分散作用明显;在大于79℃的油藏区块中,激活效果和原油乳化效果普遍比小于79℃的油藏区块差。各区块中心井激活后的菌

  17. CHANGQING OILFIELD COMPANY PROMOTES COOPERATION WITH FOREIGN COMPANIES

    Institute of Scientific and Technical Information of China (English)

    Di Guanglong; Li Dongxun

    2001-01-01

    @@ PetroChina Changqing Oilfield Company has vigorously promoted cooperation with foreign companies in oil and gas exploration and development in Orodos basin. In partnership with US-based Halliburton International Inc., Baker Hughes Inc., Schlumberger Ltd. and BJ Corporation,the company has carried out acidizing and fracturing design and operation for almost 30 wells with acquisition of the equipment. The cooperation has achieved satisfactory results. At present, the company is under negotiation with Exxon-Mobil Corporation and Chevron Corporation on the cooperative natural gas development and application of Sulige and Mizhi gas fields. A large number of first-class international petroleum companies have expressed their great interest and willingness to cooperate with Changqing Oilfield Company. On 30 July, the Asian Exchange Association based in Japan sent a 24-member delegation to Changqing on its fourth tour to seek business opportunities.

  18. Studies of Neutrino-Electron Scattering at the Kuo-Sheng Reactor Neutrino Laboratory

    CERN Document Server

    Deniz, M

    2008-01-01

    Studies on electron antineutrino-electron elastic scattering were performed using a 200-kg CsI(Tl) scintillating crystal detector array at the Kuo-Sheng Nuclear Power Plant in Taiwan. The measured cross section of R(exp) = [1.00 +- 0.32(stat)]xR(SM) is consistent with the Standard Model expectation and the corresponding weak mixing angle derived is sin2T = 0.24 +- 0.05 (stat). The results are consistent with a destructive interference effect between neutral and charged-currents in this process. Limits on neutrino magnetic moment of mu(nu_(e)) < 2.0 x 10^(-10) mu_(B) at 90% confidence level and on electron antineutrino charge radius of r^(2) < (0.12 +- 2.07)x10^(-32) cm^2 were also derived.

  19. Rheological behavior of Shengli coal-solvent slurry at low-temperatures and atmospheric pressure

    Institute of Scientific and Technical Information of China (English)

    WANG Yong-gang; YAN Yan; GUO Xiang-kun; Xu De-ping

    2009-01-01

    We report the results from systematic studies of Shengli lignite coal-solvent slurries. Solvent type, temperature, coal to solvent ratio, particle granularity, shear rate and shear time were investigated. The viscosity of the solvents is time independent. However, the slurries are thixotropic. A change from pseudo-plastic to Newtonian behavior occurs as the temperature, or as the solvent to coal ratio, increases. The solvent used in the slurry affects the point at which the theology changes from pseudo-plastic to Newtonian. The REC slurry changes at 1 : 1.2 coal to solvent ratio and at 40 ℃. The HAR slurry changes at a 1:1.5 ratio and at 60 ℃. The theology of the slurries is pseudo-plastic at low shear rates but Newtonian at high shear rates.

  20. Analysis of Energy Consumption and Energy Conservation Measures for RFCCU at Shengli Petrochemical Company

    Institute of Scientific and Technical Information of China (English)

    Li Ning; Xu Zhenling

    2006-01-01

    This article introduces a string of energy conservation measures adopted over the past several years by the RFCC unit at Shengli Petrochemical Complex, including the optimization of feedstock properties, the adoption of high-efficiency atomizing nozzles, the revamp of CO boiler, the atomization by means of dry gas, the post-burning of flue gas as well as the application of frequency converting machines and pumps, resulting in ideal effects. The energy consumption of the RFCC unit was gradually decreased to 2984.25 MJ/t from the original level of 3716.99 MJ/t. After comparing basic energy consumption values with actual consumption values, the authors have set forward measures for further energy conservation, such as the recovery of low-temperature excess heat contained in oil/gas streams exiting from the fractionation tower top, addition of the fourth cyclone, delivery of hot oil slurry, and heat tracing with hot water.

  1. Hydrogeochemical Simulation of Water-Rock Interaction Under Water Flood Recovery in Renqiu Oilfield, Hebei Province, China

    Institute of Scientific and Technical Information of China (English)

    冯启言; 韩宝平

    2002-01-01

    Hydrogeochemical simulation is an effective method to study water-rock interaction.In this paper, PHREEQM was used for the simulation of water-rock interaction under water flooding in the Renqiu Oilfield. Calculated results revealed that when fresh water was injected into the reservoir, Cl- and Na+ would decrease without involvement in water-rock interaction.Erosion to dolomite will lead to an increase in Ca2 + , Mg2 + and CaHCO3+. Saturation index of calcite and aragonite decreased first and then increased. With fresh water accounting for up to 70 %, mixed water has the strongest erosion ability. Deoiled water has erosion ability under high temperature and high partial pressure of CO2. Pyrite and gypsum were sensitive to deoiled water, which can cause the dissolution of pyrite and the precipitation of gypsum. Micrographs revealed a great deal of information about water-rock interaction.

  2. Quantitative simulation of porosity-evolution in the Member 8 sandstone reservoir of the Yanchang formation in Huanxian Oilfield, Ordos Basin%鄂尔多斯盆地环县地区长8段砂岩储层孔隙度演化定量模拟

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    Thin section analysis indicated that the diagenesis of the sandstone reservoir in the research area had mainly undergone the processes of compaction, cementation and dissolution. Combined with the mathe-matical statistics method, the methodology was based on an analysis of tight sandstone reservoir characteristics, controlling factors and a study of the burial history and diagenetic history of the study area. With current porosity as boundary constraint conditions, the geological time and burial depth as variables, the whole porosity evolution from initial burial until the present was divided into two independent processes: porosity decrease and porosity increase, for which two mathematical models were established respectively. The quantitative simulation result indicates that the whole porosity-evolution quantitative simulation was a piecewise function with four sections. That is, the porosity decrease model for the mechanical compaction and cementation stages served a continuous exponential function with the geological time and burial depth as the variables, and the secondary porosity increase was caused by organic acid dissolution within a temperature window of 80∼100◦C. Therefore, the dissolution phase was of a porosity increase model, which was a composite function of the depth, burial time and porosity decrease amount. After the dissolution phase, the porosity was in the phase of compaction and maintenance. Finally, through the exemplification, it was verified that the porosity-evolution quantitative simulation established by the present researcher is consistent with actual geological conditions and can be applied to porosity calculation of any stratum in the study area.%  在充分分析研究区长8段砂岩储层特征、主控因素及地层埋藏史和成岩史的基础上,应用数理统计方法,以现今孔隙度为约束条件,将孔隙度演化分为减小和增大两个过程,分别建立了鄂尔多斯盆地环县地区长8段砂

  3. Evaluation and prevention of formation damage in offshore sandstone reservoirs in China

    Institute of Scientific and Technical Information of China (English)

    Yang Shenglai; Sheng Zhichao; Liu Wenhui; Song Zhixue; Wu Ming; Zhang Jianwei

    2008-01-01

    Reduction in water injectivity would be harmful to the waterflood development of offshore sandstone oil reservoirs. In this paper the magnitude of formation damage during water injection was evaluated by analyzing the performance of water injection in the Bohai offshore oilfield, China. Two parameters, permeability reduction and rate of wellhead pressure rise, were proposed to evaluate the formation damage around injection wells. The pressure performance curve could be divided into three stages with different characteristics. Analysis of field data shows that formation damage caused by water injection was severe in some wells in the Bohai offshore oilfield, China. In the laboratory, the content of clay minerals in reservoir rock was analyzed and sensitivity tests (including sensitivity to water,flow rate, alkali, salt and acid) were also conducted. Experimental results show that the reservoir had a strong to medium sensitivity to water (i.e. clay swelling) and a strong to medium sensitivity to flow rate,which may cause formation damage. For formation damage prevention, three injection schemes of clay stabilizer (CS) were studied, i.e. continuous injection of low concentration CS (Ci), slug injection of high concentration CS (SI), and slug injection of high concentration CS followed by continuous injection of low concentration CS (SI-CI). Core flooding experiments show that SI-CI is an effective scheme to prevent formation damage and is recommended for the sandstone oil reservoirs in the Bohai offshore oilfield during water injection.

  4. SEISMIC WAVE ILLUMINATION AND GEOMETRIC OPTIMIZATION OF COMPLEX GEOLOGICAL STRUCTURE IN SHENGLI EXPLORATION AREA%胜利探区复杂地质构造的地震波照明与观测系统优化

    Institute of Scientific and Technical Information of China (English)

    徐雷良

    2012-01-01

    In recent years,three-dimensional seismic acquisition was carried out in Jiyang depression,even second-round three-dimensional seismic acquisition was completed in some complex oil and gas blocks and many complex media and small fault block reservoirs were studied. As a result,the oil and gas production in the Shengli oil field has been steadily growing. However,it is difficult for the traditional seismic acquisition design technology to meet the current production requirements,and hence the authors selected the steep slope belt of the Shengli exploration area to build velocity model and form a set of observation system optimization design technological series suitable for the second-round Shengli exploration district collection through the seismic wave illumination and object-oriented geometric optimization and design technology research based on the theory of wave equation. The research results show that the technological series can ensure the integrity of the form of steep geological structure and the improvement of the imaging quality of micro structures such as minor fault blocks and small sand bodies.%随着胜利探区勘探开发的逐步深入,主要勘探目标开始转向小断块、小砂体等微幅构造以及岩性隐蔽油气藏,传统的地震采集设计技术难以满足当前生产需求.为此,选取胜利探区复杂构造地质模型,开展基于波动方程理论的地震波照明和面向目标的观测系统优化设计技术的研究,形成了一套适合胜利探区二次采集的观测系统优化设计的技术系列.研究结果表明,该技术系列能够保证该区地质构造的形态完整,小断块、小砂体等微幅构造的成像质量也有较大幅度的提高.

  5. Identification and differentiation of major components in three different “Sheng-ma” crude drug species by UPLC/Q-TOF-MS

    Directory of Open Access Journals (Sweden)

    Mengxue Fan

    2017-03-01

    Full Text Available Cimicifugae Rhizoma (Sheng ma is a Ranunculaceae herb belonging to a composite family and well known in China. has been widely used in traditional Chinese medicine. The Pharmacopoeia of the People׳s Republic of China contains three varieties (Cimicifuga dahurica (Turcz., Cimicifuga foetida L. and Cimicifuga heracleifolia Kom. which have been used clinically as “Sheng-ma”. However, the chemical constituents of three components of “Sheng-ma” have never been documented. In this study, a rapid method for the analysis of the main components of “Sheng-ma” was developed using ultra-high performance liquid chromatography with quadrupole-time-of-flight mass spectrometry (UPLC/Q-TOF-MS. The present study reveals the major common and distinct chemical constituents of C. dahurica, C. foetida and C. heracleifolia and also reports principal component and statistical analyses of these results. The components were identified by comparing the retention time, accurate mass, mass spectrometric fragmentation characteristic ions and matching empirical molecular formula with that of the published compounds. A total of 32 common components and 8 markers for different “Sheng-ma” components were identified. These findings provide an important basis for the further study and clinical utilities of the three “Sheng-ma” varieties.

  6. High-tech First Used in Sino-Foreign Offshore Cooperative Oilfield

    Institute of Scientific and Technical Information of China (English)

    Xiao Yin; Yan Hao; WANG Keyu

    1996-01-01

    @@ China's largest offshore cooperative oilfield - Liuhua 11-1 Oilfield, which has been jointly developed by China Offshore Oil Nanhai East Corp. and Amoco Orient Petroleum Co. as well as Kerr-McGee China Ltd., was put intoproduction at the end of March 1996.

  7. Application of Rapid Drilling Optimization Technology in P Oilfield of Sudan

    Institute of Scientific and Technical Information of China (English)

    Zhao Mingzhang; Qi Mingming; Li Ying

    2009-01-01

    @@ P Oilfield is situated in the southeast of Sudan. Up to 100 wells have been completed since 2003. Due to the complex formation lithology, the oilfield at the initial stage of development encountered several problems,involving hole shrinkage, hole instability, well deviation,lost circulation, bit bailing, blockage during tripping and large section of reaming.

  8. Distribution of the Ordovician Fluid in the Tahe Oilfield and Dynamic Response of Cave System $48 to Exploitation

    Institute of Scientific and Technical Information of China (English)

    LOU Zhanghua; ZHU Rong; YUN Lu; RAN Qihua; SU Danyang; LI Mei

    2008-01-01

    The Tahe Oilfield is a complex petroleum reservoir of Ordovician carbonate formation and made up of spatially overlapping fracture-cavity units. The oilfield is controlled by a cave system resulting from structure-karst cyclic sedimentation. Due to significant heterogeneity of the reservoir, the distribution of oil and water is complicated. Horizontally, a fresh water zone due to meteoric water can be found in the north part of the Akekule uplift. A marginal freshening zone caused by water released from mudstone compaction is found at the bottom of the southern slope. Located in a cross- formationai flow discharge zone caused by centripetal and the centrifugal fows, the main part of the Tahe Oilfield, featuring high salinity and concentrations of CI- and K++Na+, is favorable for accumulation of hydrocarbon. Three types of formation water in the Tahe Ordovician reservoir are identified: (1) residual water at the bottom of the cave after oil and gas displacement, (2) residual water in fractures/pores around the cave after oil and gas displacement, and (3) interlayer water below reservoirs. The cave system is the main reservoir space, which consists of the main cave, branch caves and depressions between caves. Taking Cave System $48 in the Ordovician reservoir as an example, the paper analyzes the fluid distribution and exploitation performance in the cave system. Owing to evaporation of groundwater during cross-formational flow, the central part of the main cave, where oil layers are thick and there is a high degree of displacement, is characterized by high salinity and Brconcentration. With high potential and a long stable production period, most wells in the central part of the main cave have a long water-free oil production period. Even after water breakthrough, the water content has a slow or stepwise increase and the hydrochemistral characteristics of the produced water in the central part of the main cave are uniform. From the center to the edge of the main

  9. Evaluation of membranes for the treatment of oilfield-produced water

    Directory of Open Access Journals (Sweden)

    Silvio Edegar Weschenfelder

    2015-04-01

    Full Text Available Large quantities of water are generated during oil extraction. Reinjection of this effluent is frequently the most suitable option for environmental considerations. For this purpose, the water produced must have characteristics that will prevent the plugging of the reservoir rocks, i.e., suspended solids and oil and grease content must be lower than 5 mg L-1. This work evaluated the performance of membranes for water treatment, based upon long-term experiments with real effluent, evaluating the permeate flux over time and the effluent characteristics. The results indicated that it is possible to obtain a permeate flux with suspended solids content with less than 1 mg L-1 oil and a grease concentration in the range of 1 to 3 mg L-1 using membranes with a pore size of 0,1 m. After 50 hours of permeation, the permeate fluxes obtained with the polymeric and ceramic membranes were equal to 50 and 300 L h-1 m-2, respectively. With a chemical regeneration procedure, it was possible to recover 95% of the ceramic membrane’s original permeability and 30% of the polymeric membrane’s permeability. Considering the permeate quality, the regeneration efficiency of the membrane and the fluxes achieved, it is possible to point out the use of ceramic membranes as a potential technology for treating oilfield-produced water, and it has the advantage of being a compact and robust process.

  10. Studies on a Foam System of Ultralow Interfacial Tension Applied in Daqing Oilfield after Polymer Flooding

    Directory of Open Access Journals (Sweden)

    Hong-sheng Liu

    2013-01-01

    Full Text Available In order to study the effects of oil displacement by a foam system of ultralow interfacial tension, the interfacial activities and foam properties of a nonionic gemini surfactant (DWS were investigated under Daqing Oilfield reservoir conditions. Injection methods and alternate cycle of the foam system were discussed here on the basis of results from core flow experiments. It was obtained that the surface tension of DWS was approximately 25 mN/m, and ultralow interfacial tension was reached between oil and DWS with a surfactant concentration between 0.05wt% and 0.4wt%. The binary system showed splendid foam performances, and the preferential surfactant concentration was 0.3wt% with a polymer concentration of 0.2wt%. When gas and liquid were injected simultaneously, flow control capability of the foam reached its peak at the gas-liquid ratio of 3 : 1. Enhanced oil recovery factor of the binary foam system exceeded 10% in a parallel natural cores displacement after polymer flooding.

  11. Behavior of gellan in aqueous-salt solutions and oilfield saline water

    Directory of Open Access Journals (Sweden)

    Zhanar Nurakhmetova

    2015-09-01

    Full Text Available The influence of storage time and temperature on the behavior of low acyl gellan (LAG was studied by viscometry and 1H NMR spectroscopy without salt addition. The viscometric results revealed that the effectiveness of salts to enhance gelation of gellan changes in the following order: BaСl2>CaCl2»MgCl2>KCl>NaCl. The sol-gel and liquid-solid phase transitions of gellan solutions were observed upon addition of oilfield water containing 73 g L-1 of alkaline and alkaline earth metal ions. The effectiveness of salts to induce the separation of liquid and solid phases changes in the sequence: NaCl>KCl>MgCl2»CaCl2»BaСl2. The hydrodynamic behavior of 0.5 wt.% gellan solution injected into the sand pack model with high (20 Darcy and lower (2 Darcy permeability is useful to model the oil reservoirs in the process of enhanced oil recovery.

  12. Crude-oil biodegradation via methanogenesis in subsurface petroleum reservoirs.

    Science.gov (United States)

    Jones, D M; Head, I M; Gray, N D; Adams, J J; Rowan, A K; Aitken, C M; Bennett, B; Huang, H; Brown, A; Bowler, B F J; Oldenburg, T; Erdmann, M; Larter, S R

    2008-01-10

    Biodegradation of crude oil in subsurface petroleum reservoirs has adversely affected the majority of the world's oil, making recovery and refining of that oil more costly. The prevalent occurrence of biodegradation in shallow subsurface petroleum reservoirs has been attributed to aerobic bacterial hydrocarbon degradation stimulated by surface recharge of oxygen-bearing meteoric waters. This hypothesis is empirically supported by the likelihood of encountering biodegraded oils at higher levels of degradation in reservoirs near the surface. More recent findings, however, suggest that anaerobic degradation processes dominate subsurface sedimentary environments, despite slow reaction kinetics and uncertainty as to the actual degradation pathways occurring in oil reservoirs. Here we use laboratory experiments in microcosms monitoring the hydrocarbon composition of degraded oils and generated gases, together with the carbon isotopic compositions of gas and oil samples taken at wellheads and a Rayleigh isotope fractionation box model, to elucidate the probable mechanisms of hydrocarbon degradation in reservoirs. We find that crude-oil hydrocarbon degradation under methanogenic conditions in the laboratory mimics the characteristic sequential removal of compound classes seen in reservoir-degraded petroleum. The initial preferential removal of n-alkanes generates close to stoichiometric amounts of methane, principally by hydrogenotrophic methanogenesis. Our data imply a common methanogenic biodegradation mechanism in subsurface degraded oil reservoirs, resulting in consistent patterns of hydrocarbon alteration, and the common association of dry gas with severely degraded oils observed worldwide. Energy recovery from oilfields in the form of methane, based on accelerating natural methanogenic biodegradation, may offer a route to economic production of difficult-to-recover energy from oilfields.

  13. Study on Productivity Numerical Simulation of Highly Deviated and Fractured Wells in Deep Oil and Gas Reservoirs

    Directory of Open Access Journals (Sweden)

    Li Liangchuan

    2016-01-01

    Full Text Available This paper establishes the model of sandstone, porosity and permeability on single well in allusion to 10 highly deviated and fractured wells in deep oil and gas reservoirs of Jidong Oilfield, which forms a numerical simulation method of highly deviated and fractured wells in deep oil and gas reservoirs of Jidong Oilfield. The numerical simulation results of highly deviated and fractured wells productivity in deep oil and gas reservoirs are given out under different layers (layer ES1, layer ES3, layer ED2,and layer ED3, different deviation angles(60° and 75°, different fracture parameters and producing pressure drops. Through the comparison with testing data getting from exploration wells, we know that the calculation results of numerical simulation are consistent with practical testing results.

  14. Character of Terrestrial Sequence Stratigraphy and Depositional System in Incised Valley, Outcrop Area of Karamay Oilfield, Junggar Basin, China

    Institute of Scientific and Technical Information of China (English)

    Jiao Yangquan; Yan Jiaxin; Li Sitian; Yang Ruiqi; Lang Fengjiang; Yang Shengke

    2004-01-01

    In the Karamay oilfield located on the northwestern margin of Junggar basin, Xinjiang, China, a large area of the Karamay Formation is exposed at outcrop in the northeast of the oilfield, a consequence of thrusting. The Middle Triassic Karamay Formation in the outcrop area is a type of terrestrial third-order sequence, bounded by two easily recognizable sequence boundaries: a regional surface of angular unconformity (SB1) at the base and a regional unconformity (SB2) at the top. Within the Karamay Formation, two lacustrine expansion events can be recognized and be used to identify both the initial and the maximum lacustrine flooding surfaces. The two lacustrine flooding surfaces serve as references for the classification of this third-order sequence-Karamay Formation into the following three sedimentary successions: a lower lowstand systems tract (LST), a middle lacustrine-expanding systems tract (EST), and an upper highstand systems tract (HST). Different systems tracts are composed of different depositional system assemblages. In this paper, each depositional system is described in detail. The lowstand systems tract in the study area is characterized by incised valleys. At the base and on the margin of the incised valleys occur alluvial fan depositional systems, and in the upper and distal parts of the alluvial fan, low-sinuosity river depositional systems. The lacustrine-expanding systems tract consists of a lacustrine depositional system and a lacustrine delta depositional system, overlying the lower incised valley fills. The highstand systems tract is filled by a widespread lacustrine braided delta depositional system. The analysis of sequence stratigraphy in this paper serves the description of the spatial distribution of the reservoir. The depositional system analysis serves the description of the reservoir types. Field investigations of oil sandstone and oil seepage show that the Karamay Formation is composed of several types of reservoirs. However, two

  15. Issues in geothermal reservoir engineering, modeling, and numerical simulation

    Energy Technology Data Exchange (ETDEWEB)

    Pritchett, J.W. (S-Cubed, La Jolla, CA (United States))

    1996-01-01

    The theoretical basis of geothermal reservoir engineering owes much of its origins to the oil and gas industries, but important differences in resource character and geological setting have resulted in substantial divergences from reservoir simulation as practiced in the petroleum industry. Geothermal reservoirs are hotter, contain different fluids, and are usually found within fractured volcanic formations with little or no intergranular permeability. Fluid flow takes place through an intricate fracture network which penetrates the otherwise impermeable rock. By their very nature, oil and gas fields prior to production are usually static (little or no natural fluid circulation) whereas, by contrast, the presence of a dynamic active natural convective circulation system is an essential prerequisite to the formation of a geo-thermal reservoir-otherwise, the earth's heat cannot penetrate upward to drillable depths. Geothermal reservoirs usually lack the regular sub-horizontal stratification pattern typical of oilfields. The resource sought (heat) is mainly contained within the mass of the rock, so that the geothermal brines serve as working fluids to redistribute this heat within the reservoir and carry it upward. During exploitation, flow rates are necessarily high (the economic value per unit mass of hot brine is vastly less than that of oil), and the objective is to create an artificial circulation system using production and injection wells to mine energy from the reservoir by cooling the rock. These phenomenological differences have resulted in development of new techniques of reservoir modeling and simulation for geothermal applications.

  16. Issues in geothermal reservoir engineering, modeling, and numerical simulation

    Energy Technology Data Exchange (ETDEWEB)

    Pritchett, J.W. [S-Cubed, La Jolla, CA (United States)

    1996-12-31

    The theoretical basis of geothermal reservoir engineering owes much of its origins to the oil and gas industries, but important differences in resource character and geological setting have resulted in substantial divergences from reservoir simulation as practiced in the petroleum industry. Geothermal reservoirs are hotter, contain different fluids, and are usually found within fractured volcanic formations with little or no intergranular permeability. Fluid flow takes place through an intricate fracture network which penetrates the otherwise impermeable rock. By their very nature, oil and gas fields prior to production are usually static (little or no natural fluid circulation) whereas, by contrast, the presence of a dynamic active natural convective circulation system is an essential prerequisite to the formation of a geo-thermal reservoir-otherwise, the earth`s heat cannot penetrate upward to drillable depths. Geothermal reservoirs usually lack the regular sub-horizontal stratification pattern typical of oilfields. The resource sought (heat) is mainly contained within the mass of the rock, so that the geothermal brines serve as working fluids to redistribute this heat within the reservoir and carry it upward. During exploitation, flow rates are necessarily high (the economic value per unit mass of hot brine is vastly less than that of oil), and the objective is to create an artificial circulation system using production and injection wells to mine energy from the reservoir by cooling the rock. These phenomenological differences have resulted in development of new techniques of reservoir modeling and simulation for geothermal applications.

  17. A reservoir skeleton-based multiple point geostatistics method

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Traditional stochastic reservoir modeling,including object-based and pixel-based methods,cannot solve the problem of reproducing continuous and curvilinear reservoir objects. The paper first dives into the various stochastic modeling methods and extracts their merits,then proposes the skeleton-based multiple point geostatistics(SMPS) for the fluvial reservoir. The core idea is using the skeletons of reservoir objects to restrict the selection of data patterns. The skeleton-based multiple point geostatistics consists of two steps. First,predicting the channel skeleton(namely,channel centerline) by using the method in object-based modeling. The paper proposes a new method of search window to predict the skeleton. Then forecasting the distributions of reservoir objects using multiple point geostatistics with the restriction of channel skeleton. By the restriction of channel centerline,the selection of data events will be more reasonable and the realization will be achieved more really. The checks by the conceptual model and the real reservoir show that SMPS is much better than Sisim(sequential indicator simulation) ,Snesim(Single Normal Equation Simulation) and Simpat(simulation with patterns) in building the fluvial reservoir model. This new method will contribute to both the theoretical research of stochastic modeling and the oilfield developments of constructing highly precise reservoir geological models.

  18. Classification and Denomination of Flow Units for Clastic Reservoirs of Continental Deposit

    Institute of Scientific and Technical Information of China (English)

    CHANG Xue-jun; TANG Yue-gang; HAO Jian-ming; ZHANG Kai; ZHENG Jia-peng

    2004-01-01

    On the basis of other researchers' achievements and the authors' understanding of flow units, a proposal on classification and denomination of flow units for clastic reservoirs of continental deposit is put forward according to the practical need of oilfield development and relevant theories. The specific implications of development and geology are given to each type of flow units, which has provided a scientific basis for oil development.

  19. The administration of Sheng Hua Tang immediately after delivery to reduce the incidence of retained placenta in Holstein dairy cows.

    Science.gov (United States)

    Cui, Dongan; Wang, Xuezhi; Wang, Lei; Wang, Xurong; Zhang, Jingyan; Qin, Zhe; Li, Jianxi; Yang, Zhiqiang

    2014-03-15

    Sheng Hua Tang, a classical herbal formula consisting of Radix Angelicae sinensis, Ligustici rhizoma, Semen persicae, Zingiberis rhizoma, and Radix glycyrrhizae, is known to be beneficial in alleviating postpartum diseases and facilitating a return to normal reproductive function. This study investigated whether the administration of Sheng Hua Tang within 2 to 4 hours after delivery was effective as a preventive treatment for reducing the risk of retained placenta in Holstein dairy cows. A total of 357 cows, each of which had delivered its calf spontaneously, were randomly allocated to one of two groups. In the treatment group, the cows (n = 175) received Sheng Hua Tang with an oral dose of 0.36 g crude herb per kg·body weight once daily for three consecutive days. The controls (n = 182) received no treatment. The placental retention proportion was 4.0% and 17.0% within 12 hours after delivery in the treated and control animals, respectively (P < 0.01). We found decreases in the calving-to-first-service interval (73.2 ± 25.1 vs. 81.9 ± 32.8 days; P < 0.01), calving-to-conception interval (93.4 ± 38.8 vs. 114.6 ± 42.9 days; P < 0.01), and service per conception (1.5 ± 0.8 vs. 1.9 ± 1.0 days; P < 0.01) in the treatment group compared with the control group. The first artificial insemination conception proportion was higher in the treatment group than in the control group (60.4% vs. 41.1%; P = 0.01). Moreover, the between-group difference in the proportion of cows that were pregnant within 180 days postpartum approached statistical significance (88.2% vs. 80.6%; P = 0.07). Sheng Hua Tang showed beneficial effects in reducing the incidence of retained placenta and improving subsequent reproductive performance in cows. This preventive treatment strategy would be effective in improving the management of puerperal health. The potential benefits of Sheng Hua Tang warrant further investigation to determine whether this preventive treatment strategy can be endorsed as

  20. Experimental Study on Core Permittivity of Xinjiang Oilfield

    Institute of Scientific and Technical Information of China (English)

    Ke Shizhen; Gao Jianying; Sun Yanru; Cai Minlong; Ma Runsheng

    2007-01-01

    This paper introduces the principles and procedures of the core permittivity measurement using a parallel capacitor with an electromagnetic shield. The cores from the Xinjiang oilfield were measured by using the frequency-swept method at different salinities and saturations. The effects of salinity, frequency, porosity and saturation on core pennittivity were investigated. The relationship of core permittivity versus water saturation and the relationship of dry core permittivity versus porosity were obtained. The permittivity values of rock matrix and oil were obtained at a frequency of 47 MHz and 200 MHz, and would provide guidance for the interpretation of dual frequency dielectric logging data.

  1. Status on the Searches of Neutrino Magnetic Moment at the Kuo-Sheng Power Reactor

    CERN Document Server

    Wong, H T

    2002-01-01

    The TEXONO collaboration has been built up among scientists from Taiwan and China to pursue an experimental program in neutrino and astro-particle physics. The flagship efforts have been the study of low energy neutrino physics at the Kuo-Sheng Power Reactor Plant in Taiwan. The Reactor Laboratory is equipped with flexibly-designed shieldings, cosmic veto systems, electronics and data acquisition systems which can function with different detector schemes. Data are taken during the Reactor Period June-01 till April-02 with a high purity germanium detector and 46 kg of CsI(Tl) crystal scintillator array operating in parallel. A threshold of 5 keV has been achieved for the germanium detector, and the background level comparable to those of Dark Matter experiments underground is achieved. Based on 62/46 days of analyzed Reactor ON/OFF data, a preliminary result of $\\rm{(\\munue / 10^{-10} \\mub)^2 = - 1.1 \\pm 2.5}$ can be derived for neutrino magnetic moment $\\munue$. Sensitivity region on neutrino radiative decay ...

  2. Macerals of Shengli Lignite in Inner Mongolia of China and Their Combustion Reactivity

    Directory of Open Access Journals (Sweden)

    Ying Yue Teng

    2016-01-01

    Full Text Available The macerals, including fusinitic coal containing 72.20% inertinite and xyloid coal containing 91.43% huminite, were separated from Shengli lignite using an optical microscope, and their combustion reactivity was examined by thermogravimetric analysis. Several combustion parameters, including ignition and burnout indices, were analyzed, and the combustion kinetics of the samples were calculated by regression. Fusinitic coal presented a porous structure, while xyloid coal presented a compact structure. The specific surface area of fusinitic coal was 2.5 times larger than that of xyloid coal, and the light-off temperature of the former was higher than that of the latter. However, the overall combustion reactivity of fusinitic coal was better than that of xyloid coal. The combustion processes of fusinitic and xyloid coals can be accurately described by both the homogeneous model and the shrinking core model. The features of xyloid coal agree with the shrinking core model when its conversion rate is 10%–90%. The activation energy of fusinitic coal during combustion can be divided into three phases, with the middle phase featuring the highest energy. The activation energy of xyloid coal is lower than that of fusinitic coal in the light-off phase, which may explain the low light-off temperature of this coal.

  3. The Method of Oilfield Development Risk Forecasting and Early Warning Using Revised Bayesian Network

    Directory of Open Access Journals (Sweden)

    Yihua Zhong

    2016-01-01

    Full Text Available Oilfield development aiming at crude oil production is an extremely complex process, which involves many uncertain risk factors affecting oil output. Thus, risk prediction and early warning about oilfield development may insure operating and managing oilfields efficiently to meet the oil production plan of the country and sustainable development of oilfields. However, scholars and practitioners in the all world are seldom concerned with the risk problem of oilfield block development. The early warning index system of blocks development which includes the monitoring index and planning index was refined and formulated on the basis of researching and analyzing the theory of risk forecasting and early warning as well as the oilfield development. Based on the indexes of warning situation predicted by neural network, the method dividing the interval of warning degrees was presented by “3σ” rule; and a new method about forecasting and early warning of risk was proposed by introducing neural network to Bayesian networks. Case study shows that the results obtained in this paper are right and helpful to the management of oilfield development risk.

  4. Application of Heat Pump Technology in Waste Heat Recovery of Oilfield Sewage%热泵技术在回收油田污水余热资源中的应用

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    The low-grade heat energy of oilfield sewage can be recycled by heat pump technology. Part of the low-temperature heat energy can be applied in the other section needing heat in oil field, which solves the waste problem of sewage waste heat. In this article, application of the heat pump system in Daqing, Kongdian and Shengli oil fields was summarized, and the current situation of development of heat pump system and heat exchanger was discussed, which could provide certain reference for the implementation of similar energy-saving renovation project in the future.%热泵技术可以将油田污水中的低品位热能进行回收,以一小部分能量为代价,将这部分低温热能应用于油田中其他需要热的环节,解决了油田污水余热的浪费问题。总结了大庆、孔店、胜利等油田对热泵系统的应用情况,及热泵系统和换热器的发展现状,对油田今后实施同类节能改造项目具有一定的借鉴意义。

  5. Reservoir Stochastic Modeling Constrained by Quantitative Geological Conceptual Patterns

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    This paper discusses the principles of geologic constraints on reservoir stochastic modeling. By using the system science theory, two kinds of uncertainties, including random uncertainty and fuzzy uncertainty, are recognized. In order to improve the precision of stochastic modeling and reduce the uncertainty in realization, the fuzzy uncertainty should be stressed, and the "geological genesis-controlled modeling" is conducted under the guidance of a quantitative geological pattern. An example of the Pingqiao horizontal-well division of the Ansai Oilfield in the Ordos Basin is taken to expound the method of stochastic modeling.

  6. Petroleum systems in the Damintun Depression, Liaohe Oilfield

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    There are two different types of oils-high-wax oil and normal oil-found in the Damintun Depression of Liaohe Oilfield after several years of exploration and development, but their distributions and origins had confused the explorers in the oilfield. The introduction of petroleum-system concept shifts the view of geoscientists from geology and geophysics to oil, gas and their related source rocks. After detailed study, two petroleum systems have been identified in the Damintun Depression: (1) the ES42-Ar buried hill petroleum system (called the high-wax oil petroleum system) and (2) the ES41+ES34-ES4 and ES3 petroleum system (called the normal oil petroleum system). Based on the detailed analysis of the basic components, and all the geological processes required to create these elements of the two petroleum systems, it is put forward that targets for future exploration should include the area near Dongshenpu-Xinglongpu and the area near the Anfutun Sag. This provides scientific basis and has theoretical and practical meaning for the exploration and development.

  7. The regulatory environment for drilling and oilfield waste disposal and remediation in Alberta

    Energy Technology Data Exchange (ETDEWEB)

    MacLachlan, L.J.; Stimpson, S. [Macleod Dixon, Calgary, AB (Canada)

    1999-04-01

    The legislative basis of regulation of all aspects of oilfield waste, including all oil and gas, oil sands, and oilfield waste management facility operations in Alberta is discussed. The appropriate waste management practices for the upstream petroleum industry and all waste stream associated with the petroleum industry are outlined. Major topics discussed include: (1) the roles and the jurisdictions of the Alberta Energy and Utilities Board (EUB) and Alberta Environmental Protection (AEP), (2) drilling waste and oilfield waste disposal, EUB guides 50 and 58, (3) wellsite abandonment and reclamation of wellsites, (4) spills and contaminated sites, (5) environmental offences, enforcement, penalties and defences.

  8. Applications of Nanomaterials in Oilfield Development%纳米材料在油田开发中的应用∗

    Institute of Scientific and Technical Information of China (English)

    张磊; 张贵才; 蒋平; 孙铭勤

    2015-01-01

    纳米材料作为一种高新技术产物,在生命科学、电子学、医药学等领域已展现出广阔的发展前景,在石油行业亦有着很大的应用潜力。将纳米材料引入石油工程领域,实现纳米科技和现有油田技术的有机结合,有助于为油田的高效可持续开发提供技术支撑。综述了纳米材料在油藏描述、钻井完井液、增产增注、提高采收率等领域的应用和研究进展,并对其未来发展提出了几点建议。%As a high-tech product,nanomaterials have shown broad prospects in life sciences,electronics and pharmaceutics,and they also possess a huge application potential in petroleum industry.With the introduction of nanomaterials into petroleum engineering,as well as the combination of nanotechnology and current oilfield technolo-gy,it will be favorable to provide technical supports for the efficient and sustainable development of oilfield.The ap-plications and developments of nanomaterials in reservoir characterization,drilling and completion fluid,stimulation and oil recovery enhancement are reviewed.Finally,several suggestions are proposed for the future tendency of nano-materials in oilfield development.

  9. 中高温油藏微生物单井激活现场试验%Field test of microbial single well activation inmiddle and high temperature reservoir

    Institute of Scientific and Technical Information of China (English)

    谭晓明; 林军章; 唐存知; 毛源

    2016-01-01

    According to the characteristics of microbial community structure of high temperature reservoir in Shengli Oilfield,the physical model test was carried out to screen and evaluate the performance of high temperature resistant activator. The activator adaptation temperature range in more than 60 ℃, the emulsifying and dispersing effect was significant after the activation system reacting with the heavy oil,the activated bacteria count was increased from 1. 3 × 105 cell/mL to 3 × 107⁃4 × 107 cell/mL and the air pressure reached more than 0. 05 MPa,crude oil emulsification index reached more than 90%.According to the physical model conditions,the activation test of single well was carreid out in the middle and high temperature oil reservoir,after opening the well,the cell density increased from 104⁃105 cell/mL to 3. 2× 107 cell/mL,single well oil yield increased by more than 180 t,moisture content decreased by about 15%. Tests show that the activated agents could activate the endogenous microbes in the middle and high temperature reservoir, increased the oil content of the single well, and provide theoretical basis and technical support for the implementation of high temperature oil reservoir microbial oil displacement.%针对胜利油田中高温油藏微生物群落结构特点,开展室内模拟试验,对耐高温激活剂进行筛选和性能评价。室内筛选出的激活剂适应温度范围在60℃以上,该激活体系与稠油作用后乳化分散效果显著,激活后菌密度从1.3×105个/mL增至3×107~4×107个/mL,气压达到0.05 MPa以上,原油乳化指数达到90%以上。根据室内模拟条件,对中高温油藏单井进行现场激活试验,开井后,总菌密度由激活前的104~105个/mL增至3.2×107个/mL,在有效期136 d内,单井累计增油超过180 t,含水率降低约15%。试验证明,室内筛选出的激活剂可以激活中高温油藏內源微生物,提高单井产油

  10. Contaminants Investigation Bulletin: Environmental contaminants in sediments from oilfield produced water discharge points

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Trace element concentrations in sediment samples are shown in Table 2. Sediments from a wetland receiving oilfield produced water from the Arnell oil production site...

  11. Significant Progress in Pilot Test of Polymer Flooding in Daqing Oilfield

    Institute of Scientific and Technical Information of China (English)

    Liu Heng; Fu Dewu

    1994-01-01

    @@ Daqing oilfields have been developed with water injection for over thirty years. Currently,the pilot tests of polymer flooding for enhanced oil recovery are being conducted and significant progress has been made.

  12. Study on Quality Standard of ShengXue Granules%升血颗粒质量标准研究

    Institute of Scientific and Technical Information of China (English)

    戴晓雁; 王玉洁; 魏学兵

    2014-01-01

    目的:建立升血颗粒的质量标准。方法:采用薄层色谱(TLC)法对升血颗粒中山茱萸、黄芪、丹参、麦门冬进行定性鉴别;采用高效液相色谱法对升血颗粒中马钱苷的含量进行定量测定。结果:TLC 斑点清晰、分离度好,阴性对照无干扰;马钱苷进样量在0.0752~0.451μg/mL范围内与峰面积呈良好线性关系(r=0.9983),平均加样回收率为96.2%,RSD=2.3%(n=6)。结论:所建立的标准可用于升血颗粒的质量控制。%Objective:To establish quality control of ShengXue granules. Methods:ShanZhuYu(Cornus offici-nalis), HuangQi (radix Astragalus), DanShen (radix salviae miltiorrhizae) and MaiMenDong [Ophitopogin japonicum (L.f) Ker.-Gawl.] in ShengXue granules were identified by TLC;the contents of loganin were determined by HPLC. Results:TCL figures were distinct and reproducible, the blank test showed no interference;loganin showed better linear relationship in the range between 0.0752 and 0.451μg/mL and peak areas (r=0.998 3), average recovery rate was 96.2%, RSD=2.3%(n=6). Conclusion:The standard could be used in quality control of ShengXue granules.

  13. 测井技术在春光油田老井复查中的应用%Application of Logging in old wells reexamination in Chunguang Oilfield

    Institute of Scientific and Technical Information of China (English)

    林科

    2015-01-01

    为了实现春光油田持续生产的需要,对春光地区老井进行二次处理解释和精细评价,寻找新储量。本文主要对春光油田储层测井响应特征,四性关系研究进行了分析,运用老井资料开展复查工作,并取得了良好的效果。%Secondary processing and interpretation and fine evaluation on old wells in Chunguang Oilfield are carried out to find new reserves and to achieve long time production in this oilfield.This paper presents the response characteristics of the logging and relationship among lithology,physical property,electric property and hydrocarbon-bearing of reservoirs.The reexamination has achieved good results by use of old well data.

  14. Design of 3D simulation engine for oilfield safety training

    Science.gov (United States)

    Li, Hua-Ming; Kang, Bao-Sheng

    2015-03-01

    Aiming at the demand for rapid custom development of 3D simulation system for oilfield safety training, this paper designs and implements a 3D simulation engine based on script-driven method, multi-layer structure, pre-defined entity objects and high-level tools such as scene editor, script editor, program loader. A scripting language been defined to control the system's progress, events and operating results. Training teacher can use this engine to edit 3D virtual scenes, set the properties of entity objects, define the logic script of task, and produce a 3D simulation training system without any skills of programming. Through expanding entity class, this engine can be quickly applied to other virtual training areas.

  15. Advanced treatment and reuse system developed for oilfield process water

    Energy Technology Data Exchange (ETDEWEB)

    Conroy, Kevin

    2011-01-15

    An innovative plant to treat oilfield produced wastewater is being constructed in Trinidad and Tobago following recent regulations and industrial water supply challenges. The 4,100m3/day treatment system, developed by Golder Associates, will produce water for industrial reuse and effluent that meets new regulations. The treatment stages include: oil-water separation by gravity, equalization with a two-day capacity basin, dissolved air flotation, cooling, biotreatment/settling with immobilized cell bioreactors (ICB) technology, prefiltration/reverse osmosis and effluent storage/transfer. This advanced system will provide several important benefits including the elimination of inland discharge of minimally-treated water and the reduction of environmental and public health concerns. In addition, it will provide a new source of industrial water, resulting in a decrease in demand for fresh water. The success of this plant could lead to additional facilities in other oil field locations, expanding economic and environmental benefits of water reuse.

  16. The Application of BP Neural Network In Oil-Field

    Directory of Open Access Journals (Sweden)

    Pei-Ying ZHANG

    2013-09-01

    Full Text Available Aiming at the situation that many techniques of production performance analysis acquire lots of data and are expensive considering the computational and human resources, and their applications are limited, this paper puts forward a new method to analyze the production performance of oil-field based on the BP neural network. It builds a dataset with some available measured data such as well logs and production history, then, builds a field-wide production model by neural network technique, a model will be used to predict. The technique is verified, which shows that the predicted results are consistent with the maximum error of rate of oil production lower than 7% and maximum error of rate of water production lower than 5%, having certain application and research value.  

  17. Doing what comes naturally: micro-organisms decompose oilfield waste

    Energy Technology Data Exchange (ETDEWEB)

    Marsters, S.

    1999-10-01

    The Calgary-based Unique Oilfield Technology Services (UNOTEC) is developing a process that by providing the necessary tools and suitable working environment, such as nutrients, aeration and moisture, to naturally occurring bacteria and fungi, will transform oilfield wastes into a totally contained end product suitable for on-site land treatment. The work environment for the micro-organism is created by mixing drilling residue with canola meal and dry wood shavings. Canola meal can immobilize oil and prevent leaching in the containment mixture following land treatment while also providing a culture for hydrocarbon-using bacteria. It also contains nitrogen, which is a growth stimulating agent. Wood fibre creates a matrix that facilitates continuous air supply and is also a good source of fungi which produce enzymes that break down hydrocarbon rings for the bacteria to feed upon. It is claimed that the containment mix contains no free oil and is suitable for spreading winter or summer. Total cost of the bioremediation treatment for a single well is about $ 29,000. Cuttings removal from a similar well by conventional means cost $ 45,000 to meet provincial standards. To keep oil-based drilling mud off the ground, UNOTEC uses two sizes of shale shaker catch tanks and storage tanks of various dimensions. These collect the cuttings and recover drilling fluid for recycling. Centrifugation prior to transfer to storage tanks is also used to separate solids from drilling mud. The free oil represents an additional source of revenue to the company. To date, the technology has been used only in Canada, but interest has been expressed by oil companies in Algeria and also in Mexico. 3 photos.

  18. Sulfate-reducing bacteria release barium and radium from naturally occurring radioactive material in oil-field barite

    Science.gov (United States)

    Phillips, E.J.P.; Landa, E.R.; Kraemer, T.; Zielinski, R.

    2001-01-01

    Scale and sludge deposits formed during oil production can contain elevated levels of Ra, often coprecipitated with barium sulfate (barite). The potential for sulfate-reducing bacteria to release 226 Ra and Ba (a Ra analog) from oil-field barite was evaluated. The concentration of dissolved Ba increased when samples containing pipe scale, tank sludge, or oil-field brine pond sediment were incubated with sulfate-reducing bacteria Desulfovibrio sp., Str LZKI, isolated from an oil-field brine pond. However, Ba release was not stoichiometric with sulfide production in oil-field samples, and material.

  19. A Discussion of" "Si Sheng Bi Yi"%“四声别义”浅议

    Institute of Scientific and Technical Information of China (English)

    张东赞

    2012-01-01

    “四声别义”作为一种语法手段,词语的单音节形式是其存在的一个重要条件,随着汉语双音节化的发展,“四声别义”所依存的语音环境受到了影响。在概念内容没有发生变化的情况下,通过改变声调来实现词语自身语法功能的变化,这决定了其在使用范围上的局限性,以上因素在一定程度上导致了“四声别义”语法功能的弱化。%As for "si sheng bie yi", a means of grammar, one single syllable is an important condition. Along with the development of Chinese double syllable, the interdependence of phonetic environment was affected. On the concept content of the words did not change, by changing the tone to achieve words grammatical function, which also determine its use scope limitation, these factors resulted in a degree of " si sheng bie yi " grammatical function of weakening.

  20. A Novel Pharmacological Method to Study the Chinese Medicinal Formula Hua-Zheng-Hui-Sheng-Dan

    Directory of Open Access Journals (Sweden)

    Rui Cao

    2015-01-01

    Full Text Available Objectives. Hua-Zheng-Hui-Sheng-Dan (HZHSD was used as an experimental model to explore research methods of large formulae in traditional Chinese medicine (TCM using current molecular biology approaches. Materials and Methods. The trypan blue exclusion assay was used to determine cell viability and cell numbers. Flow cytometry was used to assess cell cycle distribution and apoptosis. The concentration of cyclin D1 was analyzed by enzyme-linked immunosorbent assay. The median effect principle was used in drug combination studies. An orthogonal experimental design was used to estimate the effects of each herb at different concentrations. The HeLa xenograft mouse model was used to compare the antitumor activity of drugs in vivo. Results. Among the 35 herbs that comprise HZHSD, Radix Rehmanniae Preparata (RRP, Caesalpinia sappan (CS, Evodia rutaecarpa (ER, Folium Artemisiae Argyi (FAA, Leonurus japonicus Houtt (LJH, Tumeric (Tu, Radix Paeoniae Alba (RPA, and Trogopterus Dung (TD effectively inhibited the proliferation of HeLa and SKOV3 cells. Only RRR had an effect on HeLa and SKOV3 cell viability. According to the median effect principle, Angelica sinensis (Oliv. (AS, Tabanus (Ta, and Pollen Typhae (PT, which were proven to have a significant synergistic inhibitory effect on the proliferation of HeLa cells, were added to the original eight positive herbs. The combination of RPA and AS had a synergistic effect on inducing cell cycle S phase arrest and decreasing intracellular cyclin D1 in HeLa cells. By orthogonal experimental design, LJH and Tu were considered unnecessary herbs. The small formula (SHZHSD consisted of RPA, AS, RRR, Ta., TD, PT, ER, CS, and FAA and was able to inhibit cell proliferation and induce cell apoptosis. The antitumor effects of HZHSD and SHZHSD were also compared in vivo. Conclusions. Through molecular biology approaches both in vitro and in vivo, research into single drugs, and analysis using the median effect principle

  1. Major influencing factors of water flooding in abnormally high-pressure carbonate reservoir

    Science.gov (United States)

    Qingying, Hou; Kaiyuan, Chen; Zifei, Fan; Libing, Fu; Yefei, Chen

    2017-01-01

    The higher pressure coefficient is the major characteristics of the abnormal high pressure carbonate reservoirs, which the pressure coefficient generally exceeds 1.2 and the initial formation pressure is higher than normal sandstone reservoirs. Due to the large pressure difference between initial formation and saturated pressure, oil wells are capable to production with high flow rate by the natural energy at early production stage. When the formation pressure drops to the saturation pressure, the water or gas is usually injected to stabilize the well productivity and sustain the formation pressure. Based on the characteristics of Kenkiak oilfield, a typical abnormal high pressure carbonate reservoir, a well group model is designed to simulate and analyze the influence factors on water flooding. The conclusion is that permeability, interlayer difference and reserve abundance are the main three factors on the water flooding development in these reservoirs.

  2. 稠油油藏蒸汽吞吐井长效防砂技术%Long-Term Sand Control Technology for Multiple Round Steam Huff and Puff Wells in Heavy Oil Reservoirs

    Institute of Scientific and Technical Information of China (English)

    赵益忠; 孙磉礅; 高爱花; 智勤功; 李鹏

    2014-01-01

    In order to prolong sand control validity for steam huff and puff wells in heavy oil reser-voirs ,sand control tools ,compaction material and packing technology were studied .Long-acting sand con-trol tool was developed with filling head repeatable switch and modified sealing element material ;high tem-perature resistant coated proppant with high strength was developed and multi stage packing was adopted in injection .These combined measures form the long-term sand control technology for multiple round steam huff and puff wells in heavy oil reservoirs .The sealing element of long-acting sand control tool can meet production requirements of multiple round steam huff and puff wells ,whose compression deformation is less than 55% ,extension strength reaches 8.9 MPa and the elongation at break is 102% after four rounds huff and puff experiments .High temperature resistant coated proppant can resist high temperature up to 300 ℃ ,having a consolidation strength of 7.1 M Pa and permeability of 96 Darcy after four rounds of steam huff and puff ,w hich fully meets the requirements of steam huff and puff production .M ultistage packing technology reduces cost and post-processing difficulty .The long-term sand control technology for multiple round steam huff and puff wells in heavy oil reservoirs has been applied in 11 wells in Shengli Oilfield ,and the average valid sand control time is 930 days ,w hich meets sand control requirements of multiple round steam huff and puff wells .%为进一步提高稠油蒸汽吞吐井的防砂有效期,从防砂工具、充填材料及充填工艺等方面对长效防砂技术进行了研究。根据充填口重复开关的思路设计了充填工具,并对其密封件的材料进行了优选,研制了长效防砂工具;利用多层覆膜方法研发了耐高温高强度覆膜支撑剂;采用多段塞充填工艺进行施工,形成了稠油油藏蒸汽吞吐井长效防砂技术。长效防砂工具密封件4

  3. 坪北油田井网细分重组可行性研究%Feasibility Study of Well Pattern Subdivision and Recombination in Pingbei Oilfield

    Institute of Scientific and Technical Information of China (English)

    苟瑞

    2016-01-01

    Pingbei Oilfield is a fractured reservoir with low porosity ,extra-low permeability and low pressure .This paper analyzes its geologic feature and recovery feature and studies the feasibility of well pattern subdivision and re‐combination in bed series overlay area ,followed by the conclusion that reservoir development in Pingbei Oilfield has a better overlap and the region with good productivity is suitable for well pattern subdivision and recombination ,be‐ing able to reach economic limit ,reduce the deployment of injection wells and maximize producing degree of reserves and recovery ratio .%坪北油田是典型的低孔、特低渗、低压、裂缝性油藏,历经18年的开发,油区内部层间矛盾突出、储层动用不均衡等问题严重制约了油田的发展。基于坪北油田地质特征和开采特征的分析,对层系叠加区实施井网细分重组可行性研究。该区储层发育叠合较好,产能较高的区域具备井网细分重组的潜力,能够达到经济极限产能,减少注水井的部署,并能最大限度提高储量动用程度及采收率。对同类型低渗透油藏在提高油田采收率方面具有一定的启示。

  4. Diversity of Microbial Communities in Production and Injection Waters of Algerian Oilfields Revealed by 16S rRNA Gene Amplicon 454 Pyrosequencing.

    Directory of Open Access Journals (Sweden)

    Nesrine Lenchi

    Full Text Available The microorganisms inhabiting many petroleum reservoirs are multi-extremophiles capable of surviving in environments with high temperature, pressure and salinity. Their activity influences oil quality and they are an important reservoir of enzymes of industrial interest. To study these microbial assemblages and to assess any modifications that may be caused by industrial practices, the bacterial and archaeal communities in waters from four Algerian oilfields were described and compared. Three different types of samples were analyzed: production waters from flooded wells, production waters from non-flooded wells and injection waters used for flooding (water-bearing formations. Microbial communities of production and injection waters appeared to be significantly different. From a quantitative point of view, injection waters harbored roughly ten times more microbial cells than production waters. Bacteria dominated in injection waters, while Archaea dominated in production waters. Statistical analysis based on the relative abundance and bacterial community composition (BCC revealed significant differences between production and injection waters at both OTUs0.03 and phylum level. However, no significant difference was found between production waters from flooded and non-flooded wells, suggesting that most of the microorganisms introduced by the injection waters were unable to survive in the production waters. Furthermore, a Venn diagram generated to compare the BCC of production and injection waters of one flooded well revealed only 4% of shared bacterial OTUs. Phylogenetic analysis of bacterial sequences indicated that Alpha-, Beta- and Gammaproteobacteria were the main classes in most of the water samples. Archaeal sequences were only obtained from production wells and each well had a unique archaeal community composition, mainly belonging to Methanobacteria, Methanomicrobia, Thermoprotei and Halobacteria classes. Many of the bacterial genera

  5. Diversity of Microbial Communities in Production and Injection Waters of Algerian Oilfields Revealed by 16S rRNA Gene Amplicon 454 Pyrosequencing.

    Science.gov (United States)

    Lenchi, Nesrine; Inceoğlu, Ozgül; Kebbouche-Gana, Salima; Gana, Mohamed Lamine; Llirós, Marc; Servais, Pierre; García-Armisen, Tamara

    2013-01-01

    The microorganisms inhabiting many petroleum reservoirs are multi-extremophiles capable of surviving in environments with high temperature, pressure and salinity. Their activity influences oil quality and they are an important reservoir of enzymes of industrial interest. To study these microbial assemblages and to assess any modifications that may be caused by industrial practices, the bacterial and archaeal communities in waters from four Algerian oilfields were described and compared. Three different types of samples were analyzed: production waters from flooded wells, production waters from non-flooded wells and injection waters used for flooding (water-bearing formations). Microbial communities of production and injection waters appeared to be significantly different. From a quantitative point of view, injection waters harbored roughly ten times more microbial cells than production waters. Bacteria dominated in injection waters, while Archaea dominated in production waters. Statistical analysis based on the relative abundance and bacterial community composition (BCC) revealed significant differences between production and injection waters at both OTUs0.03 and phylum level. However, no significant difference was found between production waters from flooded and non-flooded wells, suggesting that most of the microorganisms introduced by the injection waters were unable to survive in the production waters. Furthermore, a Venn diagram generated to compare the BCC of production and injection waters of one flooded well revealed only 4% of shared bacterial OTUs. Phylogenetic analysis of bacterial sequences indicated that Alpha-, Beta- and Gammaproteobacteria were the main classes in most of the water samples. Archaeal sequences were only obtained from production wells and each well had a unique archaeal community composition, mainly belonging to Methanobacteria, Methanomicrobia, Thermoprotei and Halobacteria classes. Many of the bacterial genera retrieved had already

  6. 地震资料在车古201块储层建模中的应用%Application of Seismic Data to Reservoir Modeling of the Chegu 201 Block

    Institute of Scientific and Technical Information of China (English)

    蔡毅; 张祥忠; 张新赏

    2005-01-01

    Great uncertainty exists in reservoir models built for blocks where well spacing is uneven or large. The uncertainty in reservoir models can be significantly reduced by using Coordinate Cokriging Sequential Gaussian Simulation technology, in combination with the restriction of seismic characteristic data. Satisfactory reservoir parameter interpolation results, which are more accurate than those derived only from borehole data, are obtained, giving rise to a reasonable combination of widespread and dense-sampled seismic (soft data) data with borehole data (hard data). A significant effect has been made in reservoir parameter modeling in the Chegu 201 block of the Futai Oilfield by using this technology.

  7. 濮城油田水淹层饱和度计算参数研究%On Water-flooded Layer Saturation Calculating Parameter in Pucheng Oilfield

    Institute of Scientific and Technical Information of China (English)

    申梅英; 谭海芳

    2013-01-01

    为计算濮城油田水淹层的剩余油饱和度,对其主要水淹层段各项测井资料进行了分析研究.在利用自然伽马测井资料确定自然电位扩散吸附系数,应用RFT压力资料计算过滤电位的基础上,利用常规测井资料建立了濮城油田水淹层混合地层水电阻率计算模型,确定了合理的参数.实验分析表明,在濮城油田水淹层矿化度较高的情况下,计算水淹层剩余油饱和度所需的胶结指数m、饱和度指数n参数基本稳定.水驱油对储层的物性有小幅度改善,继续使用阿尔奇公式计算饱和度是可行的.依据该方法对岩心资料计算出的含水饱和度与岩心分析数据十分接近,说明该方法选取的参数符合地层实际情况.%To accurately calculate the residual-oil saturation of Pucheng oilfield, we research and analyze the log data of its main water-flooded zones. GR well log data is used to calculate SP diffusion coefficient, and filtration potential is determined by RFT log data. We establish the calculating models of mixed water resistivity using conventional logging data, and determine the reasonable model parameters. Experimental analyzes indicate that in the high salinity water-flooded layer of Pucheng oilfield, the cementation factor m and saturation exponent n are basically stable which is essential in calculating residual-oil saturation. Displacement of oil by water could improve reservoir physical properties in a small extent. It is feasible to calculate saturation with Archie equation as before. The result using this method to calculate saturation of core data is close to the core analysis data. It is proved that the chosen parameters in this method are fit to the Pucheng oilfield reservoir practical situation.

  8. 基于可拓理论的深水油田储量分级评价方法研究%Evaluation method of reserve classification based on extension theory for deepwater oilfield

    Institute of Scientific and Technical Information of China (English)

    陈民锋; 时建虎; 乔聪颖; 吴丽; 李晨辰

    2016-01-01

    According to the comprehensive analysis on the geological characteristics and development requirements of deepwater reservoir ,the indexes of deepwater oilfield classification were screened and the corresponding standards of classi -fication indexes were determined and then a multilevel evaluation index system was built from many aspects ,such as devel-opment investment ,production effect and development effectiveness ,etc.Based on the extension theory ,the basic steps of reserve classification evaluation for deepwater oilfield were proposed and then the corresponding multilevel extension syn -thetic evaluation method was established .The example analysis shows that the method can well identify the reserve level of oil reservoir and lay a foundation for the efficient development of deepwater oilfield .%在综合分析深水油田地质特点和开发要求的基础上,从影响深水油田开发投资、生产效果、开发效益等方面出发,筛选出深水油田分类特征参数,并确定相应指标分级标准,进而构建出多级评价指标体系;针对深水油田特点,基于可拓理论方法,提出深水油田储量分级评价的基本步骤,并建立相应的深水油田储量评价的多级可拓综合评价方法。实例分析表明,本文方法能够较好地确定出深水油田储量级别,为深水油田的高效开发奠定了基础。

  9. Application of Hydraulic Fracturing Technology to Bonan Oilfield

    Institute of Scientific and Technical Information of China (English)

    Liu Zekai

    1994-01-01

    @@ Reservoir Characteristics The reservoir depth ranges from 2300 m to 3950 m. It is of 14 sand formations that consist of 28 layers, of which 24 layers have a thickness of 5-20 m. Mainly composed of feldspar, quartz silt and fine sandstones, the reservoir is affected by compaction, leading to poor physical properties. Core analysis indicates that the S3 interval has a porosity of 17.4%, an air permeability of 50× 10-3μm2, a shale content of 7.2 %, carbonate content of 5.3 %,and median grain diameter of 0. 19 mm.

  10. Geological and Petrophysical Characterization of the Ferron Sandstone for 3-D Simulation of a Fluvial-Deltaic Reservoir

    Energy Technology Data Exchange (ETDEWEB)

    Chidsey, Jr, Thomas C.

    2001-10-31

    The objective of the Ferron Sandstone project was to develop a comprehensive, interdisciplinary, quantitative characterization f fluvial-deltaic reservoir to allow realistic interwell and reservoir-scale models to be developed for improved oil-field development in similar reservoirs world-wide. Quantitative geological and petrophysical information on the Cretaceous Ferron Sandstone in east-central Utah was collected. Both new and existing data was integrated into a three-dimensional model of spatial variations in porosity, storativity, and tensorial rock permeability at a scale appropriate for inter-well to regional-scale reservoir simulation. Simulation results could improve reservoir management through proper infill and extension drilling strategies, reduction of economic risks, increased recovery from existing oil fields, and more reliable reserve calculations.

  11. Mapping local singularities using magnetic data to investigate the volcanic rocks of the Qikou depression, Dagang oilfield, eastern China

    Directory of Open Access Journals (Sweden)

    G. Chen

    2013-07-01

    Full Text Available The spatial structural characteristics of geological anomaly, including singularity and self-similarity, can be analysed using fractal or multifractal modelling. Here we apply the multifractal methods to potential fields to demonstrate that singularities can characterise geological bodies, including rock density and magnetic susceptibility. In addition to enhancing weak gravity and magnetic anomalies with respect to either strong or weak background levels, the local singularity index (α ≈ 2 can be used to delineate the edges of geological bodies. Two models were established to evaluate the effectiveness of mapping singularities for extracting weak anomalies and delineating edges of buried geological bodies. The Qikou depression of the Dagang oilfield in eastern China has been chosen as a study area for demonstrating the extraction of weak anomalies of volcanic rocks, using the singularity mapping technique to analyse complex magnetic anomalies caused by complex geological background. The results have shown that the singularities of magnetic data mapped in the paper are associated with buried volcanic rocks, which have been verified by both drilling and seismic survey, and the S–N and E–W faults in the region. The targets delineated for deeply seated faults and volcanic rocks in the Qikou depression should be further investigated for the potential application in undiscovered oil and gas reservoirs exploration.

  12. Influence of nanomirelal phases on development processes of oil reservoirs in Volga-Ural region

    Science.gov (United States)

    Izotov, Victor; Sitdikova, Lyalya

    2010-05-01

    The optimisation of oil-field development by enhancing oil recovery is the most important target in further improvement of oil production processes. The resulting economic benefits often exceed those from discoveries of new fields, especially in hard-to-reach regions. Despite the wide use of enhanced oil recovery methods, their efficiency is in many cases not as high as expected. For instance, in terrigenous reservoirs of the Volga-Ural region oil recovery rarely exceeds 0.4, and in carbonate reservoirs with the complex structure, variability and high oil viscosity it can be as low as 0.15-0.20. In natural bitumen fields, the recovery factor is even lower. Analysis of the conducted EOR optimisation operations indicates that EOR methods mainly aim to change the hydrodynamic conditions in the reservoir under development or the physicochemical properties of oil, - for instance, to decrease its viscosity or to change its lyophilic behaviour. The impact of EOR methods on the reservoir's mineral component remains largely unstudied. It is generally believed that the mineral component of the reservoir, its matrix, is inert and remains unaffected by EOR methods. However, the analysis of oil-field development processes and the available studies allow the conclusion that natural hydrocarbon reservoirs are sensitive to any impact on both the near-wellbore zone and the whole reservoir. The authors' research in the reservoir's mineral phase dynamics has permitted the conclusion that the reservoir's fluid phases (including hydrocarbons) and the reservoir itself form a lithogeochemical system that remains in unstable equilibrium. Any external impact, such as the reservoir penetration or the use of EOR methods, disturbs this equilibrium and changes the filtration characteristics of the reservoir, the fluid chemistry and the reaction of the reservoir's mineral component to the impact. In order to characterise the processes in the reservoir in the course of its development, the

  13. Characterization of the microbial diversity in production waters of mesothermic and geothermic Tunisian oilfields.

    Science.gov (United States)

    Mnif, Sami; Bru-Adan, Valérie; Godon, Jean-Jacques; Sayadi, Sami; Chamkha, Mohamed

    2013-01-01

    The microbial diversity of production waters of five Tunisian oilfields was investigated using Single Strand Conformation Polymorphism (SSCP) technique followed by cloning-sequencing. Dynamics of bacterial populations in production waters collected from four wellheads were also evaluated. For all production water samples collected, DNA from Archaea and Eucarya was not sufficiently abundant to permit detection rRNA genes from these groups by PCR-SSCP. In contrast, the bacterial rRNA genes were detected in all samples, except for samples from DOULEB12 and RAMOURA wells. SSCP profiles attested that two of the studied geothermic wells (ASHTART47 and ASHTART48) had shown a clear change over time, whereas a stable diversity was found with the mesophilic DOULEB well (DL3). PCR amplification of rRNA genes was unsuccessful with samples from DOULEB (DL12) at all three sampling time. The bacterial diversity present in production waters collected from pipelines of SERCINA and LITAYEM oilfields was high, while production waters collected from wellheads (ASHTART and DOULEB) exhibited lower diversity. The partial study of the biodiversity showed a dominance of uncultured bacteria and Pseudomonas genus (class of the Gammaproteobacteria) in three of the studied oilfields (ASHTART47, ASHTART48 and DOULEB3). However, for LITAYEM oilfield, a significant dominance of 5 phyla (Proteobacteria, Thermotogae, Firmicutes, Synergistetes, Bacteroidetes) was shown. Our study gives a real picture of the microbiology of some Tunisian oilfield production waters and shows that some of the sequenced bacterial clones have a great similarity to previous sequenced clones described from other oilfields all over the world, indicating that these ecosystems harbour specific microbial communities. These findings can be considered as an indirect indication of the indigenous origin of these clones.

  14. Recovery Process for Lighter Hydrocarbon of Natural Gas in Liaohe Oilfield

    Institute of Scientific and Technical Information of China (English)

    Sun Fulu

    1995-01-01

    @@ Liaohe Oilfield, the third largest oilfield in China is richer in natural gas. Up to the end of 1993,the accumulative production of natural gas reached 31. 15 billion m3,among which associated gas occupied 19.83 billion m3. In the recent ten years ,more than ten of lighter hydrocarbon recovery units with different scales have been constructed. The following is describing the main process features about recovery units of 200 × 104m3/d,120× 104 m3/d and other small recovery units for lighter hydrocarbon of natural gas.

  15. Water—Rock Interaction in Tarim Basin:Constraints from Oilfield Water Geochemistry

    Institute of Scientific and Technical Information of China (English)

    蔡春芳; 李伟; 等

    1997-01-01

    Olifeld waters from Cenoxoic and Mesozoic terrestrial and Paleozoic marine environments in the Tarim Basin show no obvious difference in water chemistry except Br and isotopic compositions.The Paleozoic marine strata have higher Br concentrations than the terrestrial sediments,and the lack of obvious relationship between Br and I suggests that Br is not,for the most part,derived from the degradation of organic matter.The oilfield waters are characterized by high TDS(total dissolved solids),ranging from 120000mg/L to 320000mg/L relatively low Mg,high Ca,Sr,and CF relative to Br of evaporating seawater,suggestive of enhanced water-rock interaction,OAA(organic acid anions)concentrations are generally lower than 1500mg/L with high values occurring over the temperature range from 95℃ to 140℃,in the Cambrian to Jurassic systems,and nearby unconformities.Organic acids are considered to be generated mainly from thermal maturation of kerogens during progressive burial of the Jurassic-Triassic and Cambrian-Ordovician systems,biodegradation of crude oils nearby unconformities,and thermochemical sulfate reduction in part of the Cambrian and Ordovician strata.High Al concentrations up to 3mg/L to 5.5mg/L tend to occur in the waters of high OAA or petroleum-bearing intervals,suggesting the presence of organic complexing agents.Calculation by SOLMINEQ.88 with updated database shows that AlAc2+ may account for more than 30% of the total Al.Isotopic measurements(δD,δ18O)provide evidence for the following types of waters:diagenetically-modified connate meteoric water from the Jurassic and Triassic strata;diagenetically-modified connate marine water from the Cambrian and Ordovician strata;subaerially-evaporated water from the Cenozoic and Cretaceous strata;and mixed meteoric-evaporated or/and diagenetically modified connate water from the Carboniferous strata and reservoirs adjacent to the J/C and T/C unconformities.Those waters with very negative δD values from -51.30‰to-53

  16. 孤岛油田水淹层地层水电阻率计算方法研究%Computation Method of Formation Water Resistivity for Water-flooded Zones in Gudao Oilfield

    Institute of Scientific and Technical Information of China (English)

    刘中奇; 崔琳; 董婷; 熊维

    2012-01-01

    In order to find residual oil of Gudao Oilfield Ng group in Shengli oil/gas zone, formation water resistivity, especially, flooded formation water resistivity needs to be accurately calculated. It is difficult to accurately calculate mud filtrate resistivity. Proposed is a new method to determine mud filtrate resistivity--known water layer calibration method. Based on the spontaneous potential logging principle, wellbore mud filtrate resistivity is calibrated with known water resistivity. With the calibrated mud filtrate resistivity, spontaneous potential can be applied to obtain the formation water resistivity of the target layers. The new method can accurately calculate the formation water resistivity even in water-flooded zones.%为寻找胜利油气区孤岛油田Ng组剩余油富集区,需要准确求取地层水电阻率,特别是水淹层地层水电阻率,难点在于泥浆滤液电阻率的准确求取.提出一种新的泥浆滤液电阻率确定方法——已知水层标定法.基于自然电位测并原理,用已知水层的电阻率标定井筒泥浆滤液的电阻率,用标定后的泥浆滤液电阻率应用自然电位测井求取目的层的地层水电阻率.该方法能够比较准确地计算地层水的电阻率,对水淹层地层水电阻率的计算也非常有效.

  17. 曲堤油田注入水污染原因及改善措施研究%Pollution reasons of injection water in Qudi Oilfield and prevention measures

    Institute of Scientific and Technical Information of China (English)

    李蕾; 雷光伦; 魏晓冬; 王洪胜

    2014-01-01

    针对胜利济北公司曲堤油田注入水沿程污染严重的问题,实验测定了沿程水质变化情况,探究影响水质因素,提出改善工艺措施并测定改善效果。结果表明,沿程水质的影响因素主要是腐蚀产生的铁离子、微生物,以及结垢等;采用的改善措施主要包括优化水处理工艺,采用有效除铁的预氧化除铁技术与悬浮污泥过滤技术,改用玻璃钢水管,加入质量浓度为5~10 m g/L的羟基亚乙基二膦酸(H ED P )阻垢剂等措施,达到改善曲堤油田沿程水质的效果。%In order to solve the problem of serious water pollution along the transmission line in Shengli Qudi Oilfield ,water quality changes along the line were measured .Pollution sources of injection water ,pollution prevention measures and their effects were exploded .The results show that the major pollution influence factors are corrosion ,iron ion ,microorganism ,and scal-ing ,etc .The effective pollution prevention measures include optimization of water treatment technique ,adopting effective methods to remove iron ion such as oxidation of iron removal tech-nique and the suspended sludge filtration .Furthermore ,replacement of glass tube pipe and the use of scale inhibitor HEDP (with concentration of 5~10 mg/L) will improve the water quality along the transmission line .

  18. 利用土著微生物修复胜利油田含油污泥的工业实验%Industrial Experiments on Bioremediation of the Oil Sludge with Indigenous Organisms in Shengli Oilfield

    Institute of Scientific and Technical Information of China (English)

    闫毓霞

    2008-01-01

    以胜利油田滨一污水站长期堆放的含油污泥为研究对象,采取工程措施创造有利于土著微生物生长繁殖的条件,强化其石油降解活性,以修复480 m3的含油污泥.测定了不同修复阶段污泥的油含量、不同种类微生物数量和污泥基本理化性质的变化情况,并与加入菌剂和未做任何处理的对照区块进行对比.对初始油含量为126 g/kg的污泥,利用土著微生物进行230天的修复后,油含量下降了42.8%,持水量明显增加,生物毒性降低.结果表明,利用土著微生物进行含油污泥的生物修复可在一定程度上去除石油污染物,是一种有效的含油污泥处理方法.

  19. Study on the activation Geobacillus species in Zhan 3 blocks of Shengli Oilfield%胜利油田沾3区块油藏中Geobacillus菌的激活研究

    Institute of Scientific and Technical Information of China (English)

    李彩风; 李阳; 吴昕宇; 曹嫣镔; 汪卫东; 包木太

    2016-01-01

    利用16S rRNA克隆文库技术分析胜利油田沾3区块油藏样品的微生物群落结构,使用不同激活剂对沾3区块油藏样品进行内源微生物激活,对激活后样品进行乳化能力、产生表面活性物质能力评价及微生物群落结构分析,并开展物理模拟驱油实验.结果表明:沾3区块油藏样品中含有2%的Geobacillus,该菌是沾3区块油藏内源微生物中产生表面活性物质、发挥乳化功能的关键菌群;加入适宜的激活剂体系可以选择性激活该类细菌,使其成为优势菌;利用选择性激活Geobacillus的配方激活沾3区块油藏内源微生物,可以在水驱基础上提高原油采收率10.8%.

  20. 石油企业作业队伍超时劳动问题探讨--以胜利油田为例%Discussion on Overtime Work by Oil Companies Operating Teams---Taking Shengli Oilfield as An Example

    Institute of Scientific and Technical Information of China (English)

    侯哲

    2015-01-01

    The overtime work by front-line workers in oil development enterprises has been a difficult problem which has plagued the human resource management for years.The main reason for overtime work is that the job teams and the actual number of labor power and the workload is not matching,supporting ability is insufficient,pipe and rod are seriously aging,and the pattern of labor organization is comparatively backward.Therefore,we should strengthen the top-level design,optimize the whole operation system scheme,and alleviate or solve the overtime work to a certain extent,and constantly improve the la-bor efficiency and benefit and safeguard the legitimate rights and interests of the workers'rest and leaves.%石油企业开发单位作业一线员工超时劳动问题是多年来困扰各单位人力资源管理部门的一个难题。产生超时的原因主要是作业队伍与实际动力数、现有工作量不匹,配套保障能力不足,管杆老化严重,劳动组织形式较为落后等。对此,应加强顶层设计,优化作业系统整体运行方案,力求在一定程度上缓解或解决超时劳动现象,不断提高用工效率和效益,保障职工休息休假的合法权益。

  1. 超声波对胜利浅海原油降粘试验研究%Experimental Study of Viscosity Reduction on Crude Oil of Shengli Shallow Sea Oilfield with Ultrasonic Technique

    Institute of Scientific and Technical Information of China (English)

    董贤勇; 张平; 林日亿; 李兆敏

    2004-01-01

    为了经济有效的开采高凝、高粘原油,降低原油管道输送能耗,对胜利油田浅海脱水原油进行了不同声强、频率、作用时间等超声波降粘试验和筛选最佳降粘参数组合的正交试验,得到了超声波降粘的最佳组合参数.该研究有助于超声波在原油开采、输送等方面的应用.

  2. Analysis of Legal Risk Prevention and Control of Shengli Oilfield Material Procurement Contract%浅析胜利油田物资采购合同法律风险防控

    Institute of Scientific and Technical Information of China (English)

    张樾勇

    2013-01-01

    物资采购是企业经营和发展中重要的组成部分,但随着企业内外部环境的不断变化,物资采购中存在的法律风险却掣肘企业的发展。有效识别和评估企业物资采购中的法律风险,强化物资采购全过程监督和风险防控,对确保企业稳健经营至关重要。对合同签订中风险及防控存在的问题进行有效分析,提出今后工作中的防控措施,可使企业避免物质采购过程中的损失从而提高企业的经济效益。%The procurement is an important part of enterprise management and developing .But with the constant changing of enterprise internal and external environment ,the legal risks existing in the material purchasing is hampering the development of enterprises .Effective identification and evaluation of the legal risk in enterprise material procurement ,strengthening the complete procurement process supervision and risk prevention and control ,are very important to ensure the stable operation of the enterprise .Through the analysis of risk and prevention and control in the contract signed ,puts forward the prevention and control measures in the future work ,will help avoid loss for the enterprise and bring economic benefits .

  3. Research on Microscopic Characteristics of Carbonate Reservoir Fracture fillings Based on Microscopic Infrared Spectroscopy

    Directory of Open Access Journals (Sweden)

    Li Jing

    2016-01-01

    Full Text Available The characteristics of hole and seepage of carbonate rocks depend on the structural components of carbonate rocks and the combination relationship with these structural components under multi-scale. The quality of filling in reservoir fracture is an important part of fracture description. In this paper, the method of microscopic infrared spectral imaging was used, and the spectra cubic database was established by means of spectral imaging experiment. Each single band image which characterizes the related substances was extracted and the microcosmic characters of the filling in carbonate reservoirs fracture from Wumishan formation in Renqiu oilfield were studied. The spatial distribution maps of different chemical composition and groups in the core sample were obtained. The distribution of different hydrocarbon in the fracture of the reservoir and the connectivity of the pores etc. were better revealed

  4. Clinical Observation on Therapeutic Effect of Ji De Sheng She Yao Tablet on 16 Cases with AIDS Complicated by Herpes Zoster

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    @@The Ji De Sheng She Yao tablet (季德胜蛇药片)is a drug for snake-bites and insect bites. According to recent reports, this drug has been used to treat herpes zoster, hepatitis B, parotitis, nephrotic syndrome, acute conjunctivitis, recurrent aphtha, urticaria, etc.1 with good therapeutic effects. More than half of the AIDS patients suffered from herpes zoster. The area of skin lesion in AIDS patients is larger than that of the patients without AIDS and the pain lasts longer. Many cases have keloids and depigmentation for months, even severe pain till their death. Routine therapeutic methods are not satisfactory in therapeutic effects. The expert group of traditional Chinese medicine for cooperative research on AIDS used Ji De Sheng She Yao tablets (季德胜蛇药片) to treat AIDS complicated by herpes zoster for the first time and the results are reported as follows.

  5. 抽油机减载器在塔河油田的应用及改进%Application and improvement of load shedding devices in Tahe oilfield

    Institute of Scientific and Technical Information of China (English)

    陈灿; 陈凤; 张耀; 施硕; 杨小辉

    2013-01-01

      塔河油田主力区块为具有底水的奥陶系碳酸盐岩岩溶缝洞型油藏。目前塔河油田机抽井平均泵挂深度达2606 m,由于部分井注水条件差,不得不靠加深泵挂放大生产压差保证连续生产。同时深抽时需要配套大型抽油机,大量H级抽油杆、玻璃钢抽油杆和 EUE 油管,增加了作业和生产成本。为解决这一难题,塔河油田引进了抽油机减载器进行试验应用,成功实现了小型抽油机的深抽。通过应用证明抽油机减载器能够有效地减轻抽油机驴头载荷,降低各级抽油杆的应力和变形,实现抽油机减载节能采油和延长抽油杆及地面设备使用寿命,有效地节约生产成本[1]。%  The main block of Tahe oilfield is the Ordovician carbonatite karst gap reservoir with bottom water. At present, the aver⁃age pump setting depth in Tahe oilfield is 2 606 meters. Due to the poor injection conditions of some wells, the deepening of the pump setting depth and the increase of the drawdown pressure is needed for continuous production. Meanwhile, that deep pumping needed to equip large-size pumping units and numerous H-class rods, FRP rods and EUE tubings increased operations and pro⁃duction cost. To solve this problem, Tahe oilfield introduced the load shedding devices and successfully implemented deep pump⁃ing of small-size pumping unit. It is proved that load shedding devices can effectively reduce the load of horse head, lower the stress and the strain of rod at all levels, realize the load shedding energy-efficient production, increase the service life of sucker rods and ground equipments and reduce the production cost.

  6. Immunomodulatory Effect of Chinese Herbal Medicine Formula Sheng-Fei-Yu-Chuan-Tang in Lipopolysaccharide-Induced Acute Lung Injury Mice

    OpenAIRE

    Chia-Hung Lin; Ching-Hua Yeh; Li-Jen Lin; Shulhn-Der Wang; Jen-Shu Wang; Shung-Te Kao

    2013-01-01

    Traditional Chinese medicine formula Sheng-Fei-Yu-Chuan-Tang (SFYCT), consisting of 13 medicinal plants, was used to treat patients with lung diseases. This study investigated the immunoregulatory effect of SFYCT on intratracheal lipopolysaccharides- (LPS-) challenged acute lung injury (ALI) mice. SFYCT attenuated pulmonary edema, macrophages, and neutrophils infiltration in the airways. SFYCT decreased inflammatory cytokines, including tumor necrosis factor- α (TNF α ), interleukin-1 β , and...

  7. Lian-Sheng Ma, Editor-in-Chief of WJG, warmly meets Professor Hugh J Freeman from the University of British Columbia

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Lian-Sheng Ma, Editor-in-Chief of World Journal of Gastroenterology (WJG), warmly met Professor Hugh J Freeman from the University of British Columbia at Peninsula Hotel in Beijing on August 28, 2007. Professor Hugh J Freeman gave much helpful advice toward the further development of WJG. He will serve as series editor for a new column called OBSERVER which will start in WJG in 2008.

  8. Deployment of Wireless Sensor Networks for Oilfield Monitoring by Multiobjective Discrete Binary Particle Swarm Optimization

    Directory of Open Access Journals (Sweden)

    Zhen-Lun Yang

    2016-01-01

    Full Text Available The deployment problem of wireless sensor networks for real time oilfield monitoring is studied. As a characteristic of oilfield monitoring system, all sensor nodes have to be installed on designated spots. For the energy efficiency, some relay nodes and sink nodes are deployed as a delivery subsystem. The major concern of the construction of the monitoring system is the optimum placement of data delivery subsystem to ensure the full connectivity of the sensor nodes while keeping the construction cost as low as possible, with least construction and maintenance complexity. Due to the complicated landform of oilfields, in general, it is rather difficult to satisfy these requirements simultaneously. The deployment problem is formulated as a constrained multiobjective optimization problem and solved through a novel scheme based on multiobjective discrete binary particle swarm optimization to produce optimal solutions from the minimum financial cost to the minimum complexity of construction and maintenance. Simulation results validated that comparing to the three existing state-of-the-art algorithms, that is, NSGA-II, JGGA, and SPEA2, the proposed scheme is superior in locating the Pareto-optimal front and maintaining the diversity of the solutions, thus providing superior candidate solutions for the design of real time monitoring systems in oilfields.

  9. Physical chemical characteristics of oil emulsions of North-West Konys and Zhanaozen oilfields

    Directory of Open Access Journals (Sweden)

    Akbota Adilbekova

    2016-06-01

    Full Text Available Physical chemical properties of oil emulsions of two different oilfields of Kazakhstan - NorthWest Konys and Zhanaozen by their densities related to light and heavy oils, respectively, were studied. Qualitative and quantitative compositions of main stabilizing components of oil emulsions (resins, asphaltenes and high molecular paraffins were determined. The dispersion degree of oil emulsions was determined using optical microscopy. It was found that samples relate to fine dispersed oil emulsions by dispersion, and to poorly stable (Konys and highly stable (Zhanaozen oil emulsions by ability to form emulsions. Light oil of Konys oilfield (ρ = 833 kg/m3 at 20°C contains 11.5% of paraffins, 0.69% resins, 0.19% asphaltenes. The same measurements were carried out for heavy oil of Zhanaozen (943 kg/m3 at 20°C where paraffin content exceeded 30%, amount of resins was 1.5% and asphaltenes – 0.6%. The sample of Zhanaozen oilfield contains 33% of water, 154.8 mg/L chlorides, 5.22 % mechanical impurities, and for oilfield samples of North-West Konys the water content was 7.5%, the content of chloride salts – 18 mg/L, and 0.002% of mechanical impurities.

  10. Technologies for Progressive Exploration and Development of Complicated Fault-Block Oilfields

    Institute of Scientific and Technical Information of China (English)

    Yue Dengtai

    1997-01-01

    @@ A lot of complicated faultblock oilfields have been discovered and brought under exploration and development in old and new development areas of the rift-subsidence basins widely distributed in China,forming an important part of newly incremental onshore reserves.

  11. 马北油田水平井采油工艺与开采现状认识%Oil Production Technology of Horizontal Well of Mabei Oilfield and Mining Status

    Institute of Scientific and Technical Information of China (English)

    李宝山; 熊德进; 董晓明

    2012-01-01

    利用水平井技术开发油藏,是油田提高油气采收率的重要技术手段,特别是在低渗透油藏、裂缝性油藏、薄油层油藏、断块油藏、稠油油藏、气顶底水油藏以及砾岩油藏中,由于水平井有着钻达目的油层井段长,泄油面积大,流体流入井筒阻力小等特点,产油能力远高于直井、定向井,以及水平井较直井、定向井具有其采油指数高,生产压差低,无水采油期长,含水上升慢,受到广泛重视,并在各油田得到广泛应用.%Using the horizontal well technology to develop oil reservoir is important technical means to improve recovery ratio of oil-gas oilfield, especially in low permeability reservoirs, fractured reservoir and thin-layer oil reservoir, fault block reservoir, heavy oil reservoirs, gas cap reservoirs with bottom water as well as conglomerate oil reservoir, because horizontal well has features, I.e. Drilling oil Well is long, oil spills area is large, and resistance of fluid inflowing the borehole is small. Oil production capacity is far higher than vertical well, directional well, compared to directional well, horizontal well has high oil production index, low production differential pressure, long period without water, slow water cut rose, which has been paid attention to, and widely used in various oil field.

  12. Clinical Observation on Sheng's Black Plaster in the Treatment of Tendon Injury%生氏黑膏药治疗筋伤的临床观察

    Institute of Scientific and Technical Information of China (English)

    生家耀

    2012-01-01

    目的:探讨生氏黑膏药治疗筋伤的临床疗效.方法:196例筋伤患者采用生氏黑膏药(由麝香、牛黄、珍珠、三七、鹿茸、冰片、血竭、鳖甲等90味原料制成)治疗.结果:痊愈162例,好转30例,无效4例,有效率97.95%.结论:生氏黑膏药治疗筋伤的疗效显著.%Objective:To observe clinical effects of Sheng's Black Plaster on the treatment of tendon injury. Methods: 196 patients of tendon injury were treated by the Sheng's Black Plaster( composed of 90 herbs such as Musk, Bezoar,Genuine pearl, Panax notoginseng, Cornua cervi pantotrichum, Malayan camphor, Daemonorops draco, Carapax trionycis and so on). Results: After treatment, 162 cases were healed,30 were improved,4 were ineffective and the effective rate was 97. 95% . Conclusion:The Sheng's Black Plaster has significant curative effects on the treatment of tendon injury.

  13. Risk assessment of nonhazardous oil-field waste disposal in salt caverns.

    Energy Technology Data Exchange (ETDEWEB)

    Elcock, D.

    1998-03-10

    Salt caverns can be formed in underground salt formations incidentally as a result of mining or intentionally to create underground chambers for product storage or waste disposal. For more than 50 years, salt caverns have been used to store hydrocarbon products. Recently, concerns over the costs and environmental effects of land disposal and incineration have sparked interest in using salt caverns for waste disposal. Countries using or considering using salt caverns for waste disposal include Canada (oil-production wastes), Mexico (purged sulfates from salt evaporators), Germany (contaminated soils and ashes), the United Kingdom (organic residues), and the Netherlands (brine purification wastes). In the US, industry and the regulatory community are pursuing the use of salt caverns for disposal of oil-field wastes. In 1988, the US Environmental Protection Agency (EPA) issued a regulatory determination exempting wastes generated during oil and gas exploration and production (oil-field wastes) from federal hazardous waste regulations--even though such wastes may contain hazardous constituents. At the same time, EPA urged states to tighten their oil-field waste management regulations. The resulting restrictions have generated industry interest in the use of salt caverns for potentially economical and environmentally safe oil-field waste disposal. Before the practice can be implemented commercially, however, regulators need assurance that disposing of oil-field wastes in salt caverns is technically and legally feasible and that potential health effects associated with the practice are acceptable. In 1996, Argonne National Laboratory (ANL) conducted a preliminary technical and legal evaluation of disposing of nonhazardous oil-field wastes (NOW) into salt caverns. It investigated regulatory issues; the types of oil-field wastes suitable for cavern disposal; cavern design and location considerations; and disposal operations, closure and remediation issues. It determined

  14. INEEL Biotechnology for Oilfield Application--Microbial Enhanced Oil Recovery FY-03 Report

    Energy Technology Data Exchange (ETDEWEB)

    G. A. Bala; D. F. Bruhn; S. L. Fox; K. S. Noah; K. D. Schaller; E. P. Robertson; X. Xie

    2003-11-01

    The Idaho National Engineering and Environmental Laboratory (INEEL) Biotechnology for Oilfield Operations program supports development, engineering, and application of biotechnology for exploration and production. This continuing INEEL program also supports mitigation of detrimental field conditions. The program is consistent with the United States Department of Energy mission to ¡§promote activities and policies through its oil technology and natural gas supply programs to enhance the efficiency and environmental quality of domestic oil and natural gas exploration, recovery, processing, transport, and storage.¡¨ In addition, the program directly supports the focus areas of Reservoir Life Extension; Advanced Drilling, Completion and Stimulation Systems; Effective Environmental Protection; and Cross Cutting Areas. The program is enhanced by collaborative relationships with industry and academia. For fiscal year 2003, the program focused on production and characterization of biological surfactants from agricultural residuals and the production and application of reactive microbial polymers. This report specifically details: 1. Use of a chemostat reactor operated in batch mode for producing surfactin, with concomitant use of an antifoam to prevent surfactant loss. The program achieved production and recovery of 0.6 g/L of surfactin per 12 hr. 2. Characterization of surfactin produced from agricultural residuals with respect to its ability to mediate changes in surface tension. Conditions evaluated were salt (as NaCl) from 0 to 10% (w/v), pH from 3 to 10, temperature from 21 to 70¢XC, and combinations of these conditions. When evaluated singularly, pH below 6 and salt concentrations above 30 g/L were found to have an adverse impact on surfactin. Temperatures of 70¢XC for 95 days had no effect. When the effect of temperature was added to the pH experiment, there were no significant changes, and, again, surface tension, at any temperature, increased at pH below 6

  15. 江苏油田未动用石油储量综合价值分级方法研究%Classification of comprehensive value of undeveloped petroleum reserves in Jiangsu Oilfield

    Institute of Scientific and Technical Information of China (English)

    李红昌; 刘桂玲; 王凯宏; 刘登科

    2015-01-01

    江苏油田已探明未动用储量占已探明储量的17.8%。对未动用储量进行综合价值分级是行之有效的方法。该方法突出石油储量的经济效益和战略价值,以储量经济性为主要分级依据,兼顾储量规模等战略因素,全面系统地反映了石油储量的综合价值。结合江苏油田未动用储量的油藏、地质及规模特点,研究推导了石油地质储量综合价值分级模型以及江苏油田石油地质储量综合价值分级方案,为油田开发部署乃至战略规划的制定提供了参考。%In Jiangsu Oilfield,the undeveloped proved reserves accounts for 17.8% of the proved reserves.Classifica-tion of comprehensive value of undeveloped petroleum reserve is an effective method to evaluate the undeveloped reserve. The method highlights the economic and strategic value of oil reserves,with the economy of reserve as the main basis for classification,taking account of reserve scale strategic factors,comprehensively and systematically displaying the compre-hensive value of oil reserves.According to the characteristics of reservoir,geology and scale of the undeveloped reserves in Jiangsu Oilfield,it was derived that the grading model and the classification scheme for comprehensive value of petroleum geological reserves,providing references for oilfield development and planning.

  16. The Process and Reason of the Change of Oil-Water Contact of Shahejie Formation in BZ25-1 Oilfield

    Science.gov (United States)

    Cong, F.; Liu, J.

    2015-12-01

    Due to the influence of Neo-tectonic movement, the Shahejie reservoirs in Bohai Bay Basin has undergone late-stage transformation and adjustment, causing the oil-water contact to change. Through studying the changing history of oil-water contact, we can better restore petroleum accumulation process and analyze oil distribution pattern. Based on reservoir geochemistry theory and drilling and logging data, grains with oil inclusion was analyzed, and oil-bearing property, organic extracts and biomarkers was used to determine the present and paleo-oil water contact of Shahejie formation in BZ25-1 oilfield. It suggested that the paleo and present oil-water contact in Shahejie formation locates in different depth, and that Shahejie formation has gone through three petroleum charging stages and has also undergone reservoir adjustment. The POWC(paleo-oil-water contact) of E2S2 reservoirs in BZ25-1-5 well and E2S2 reservoirs in BZ25-1-3 well is lower than OWC(present oil-water contact) at least for 9m and at most for 400m, but the POWC of E2S3 reservoirs in BZ25-1-5 well is higher than OWC at least for 20m and at most for 27.5m. The petroleum accumulation process and the reason for oil-water contact adjustment were studied based on burial history, petroleum generation history, fault re-activation rate and petroleum charging history. It suggested that the three petroleum charging stages are Mid-Miocene(11.5Ma), Late Miocene-Pliocene(6.5-3.5Ma) and Quaternary(2.5Ma-present), among which the second~third charging episode is seen as the major petroleum accumulation stage. The re-activeted faults in several different periods not only served as preferential path for petroleum vertical migration, but also caused petroleum leakage through faults. The petroleum leakage mainly occurred in Neo-tectonic movement period(after 3.5Ma), during which petroleum vertically leaked through re-activated faults and migrated to shallow reservoirs or spilled over surface, meanwhile due to constant

  17. Geological and petrophysical characterization of the Ferron Sandstone for 3-D simulation of a fluvial-deltaic reservoir. Technical progress report, January 1, 1995--March 31, 1995

    Energy Technology Data Exchange (ETDEWEB)

    Allison, M.L.

    1995-05-02

    The objective of this project is to develop a comprehensive, interdisciplinary, and quantitative characterization of a fluvial-deltaic reservoir which will allow realistic inter-well and reservoir-scale modeling to be developed for improved oil-field development in similar reservoirs world-wide. The geological and petrophysical properties of the Cretaceous Ferron Sandstone in east-central Utah will be quantitatively determined. Both new and existing data will be integrated into a three-dimensional representation of spatial variations in porosity, storativity, and tensorial rock permeability at a scale appropriate for inter-well to regional-scale reservoir simulation. Results could improve reservoir management through proper infill and extension drilling strategies, reduction of economic risks, increased recovery from existing oil fields, and more reliable reserve calculations. Transfer of the project results to the petroleum industry is an integral component of the project.

  18. 转变观念在老区勘探中的重要性--以胜利油田东部探区青南油田的发现为例%Importance of unconventional mindsets in further fine exploration of mature blocks:a case study of Qingnan oilfield,eastern Dongying Depression

    Institute of Scientific and Technical Information of China (English)

    张善文

    2014-01-01

    After years of intensive exploration ,blocks in eastern Dongying Depression of Shengli Oilfield Company yielded few and few new discoveries in past couple years .Explorationists of Shengli Oilfield Company wisely realized then that new mindsets and open mindness were urgently needed to guide further fine explration of these aging blocks .Then in 2013,the 75th discovery-Qingnan Oilfield-was disoveried in eastern blocks of Dongying Depression .This seccess can be attributed to the following reasons:an exploration strategy shift from structural traps on slopes to lithologic traps in sags ;a shift of understanding of sedimentary settings from deep turbidite fan to shore-shallow lacustrine;an exploration view turning from unfavorable migration zones to favorable migration zones;a change of understanding of sedimentary facies from beach-sandbodies of subsag-scale to local sand bars .These reasons all made the importance of new mindsets and open mindness to stand out in each critical step of discovering the field .However ,what behind all these are still concrete basic works and innovative technologies .%胜利油田东部探区目前已进入高勘探程度阶段。面临严峻的勘探形势,胜利油田勘探工作者本着思想再解放、认识再创新的理念,精细工作、开拓进取。2013年,在东部老区勘探程度最高的东营凹陷发现了胜利油田东部探区第75个油田---青南油田。回顾青南油田的发现历程,每次认识的创新和观念的转变都给青南地区的勘探工作带来了新的转机。具体表现为:①由斜坡带构造向洼陷带岩性的战略转移突破了青南洼陷工业油流关;②由深水浊积扇向滨浅湖滩坝的认识转变加快了青南洼陷的勘探步伐;③由运移不利区向运聚有利区的观念转变明确了青南洼陷的整体规模;④由满洼滩砂向坝砂局部发育的模式转变推动了老油区新油田的发现。青南油田发现过程中的每个

  19. Logging Geology Study of the Caverned Paleokarst Reservoir Distribution%古岩溶洞穴型储层分布规律的测井地质研究

    Institute of Scientific and Technical Information of China (English)

    吴欣松; 杨雷; 潘文庆; 顾乔元

    2005-01-01

    In recent years, many carbonate rock oilfields such as Lunnan and Tahe have been found in the Tarim Basin, and the main reservoir space of the stable high yield wells in these oilfields consists mainly of the caverns formed by the paleo-karstification and the dissolution pores and fractures connected with them. Nevertheless, it is difficult to predict effectively the distribution of the cavern reservoir because of its extremely serious heterogeneity. In this paper, a case study of the Lunxi Oilfield in the north uplift of the Tarim Basin is conducted to introduce the logging geology method for predicting the distribution of the caverned paleokarst reservoir. By means of building up the logging recognition style of different caverns and differentiating and correlating the karst zones with logging curves, and through an analysis of the paleokarst topography background, the favorable karst zones and distribution areas of the high quality cavern reservoir have been located, which lays a new basis for further exploration in this area.

  20. Evaluation of the in-Service Training Courses Impact on Empowerment of National Iranian South Oilfields Company’s Employees

    National Research Council Canada - National Science Library

    Gholamhossein Barekat; Abdolreza Gilavand

    2015-01-01

    .... This is a descriptive study which is carried out in April 2015 to evaluate the effect of in-service training courses on employee empowerment among National Iranian South Oilfields Company (NISOC...

  1. Toxicity and water quality of natural waterbodies, reserve pits and selected sites at North Slope, Alaska, oilfields

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Oilfield activities on the North Slope of Alaska result in production of large amounts of wastes and fugitive dust. Surface storage and disposal of these wastes may...

  2. Technology of Ultrasonic Treatment of High-Viscosity Oil from Yarega Oilfield to Improve the Rheological Properties of Oil

    Science.gov (United States)

    Zemenkov, Y. D.; Zemenkova, M. Y.; Berg, V. I.; Gordievskaya, E. F.

    2016-10-01

    The article investigates the possibility of applying ultrasonic treatment oil from Yarega oilfield to improve of rheological properties, reduce oil viscosity in Russian pipeline transportation system, and increase its efficiency and performance. Created laboratory test bed of ultrasonic waves.

  3. The Summary on Exploration of the Dolomite Oilfields in the World%世界白云岩油气田勘探综述

    Institute of Scientific and Technical Information of China (English)

    马锋; 杨柳明; 顾家裕; 陈曦; 赵喆; 金银楠; 高力

    2011-01-01

    利用C&C数据库的"数字化类比知识系统",对世界上137个白云岩油气藏勘探数据进行统计研究,分析全球白云岩油气田分布规律、形成的构造背景、发育的盆地类型、赋存的沉积环境及主要产层的时代,并进而分析全球已发现白云岩油气田的油气产量与它们的关系;白云岩油气田以陆上为主,主要分布在北美洲,构造背景以缝合带边缘的前陆盆地为主,其产层主要分布在古生代和中生代,在萨布哈潮坪环境下,更容易发现白云岩气田,而在前缘斜坡和深水盆地环境下,以白云岩油田为主,高能碳酸盐砂和生物建造环境下以凝析气田为主。通过对这些油气田白云岩储集层储集空间的分析及孔、渗数据的研究,揭示白云岩优质储层主要受白云石化作用、溶蚀作用和裂缝化作用控制,沉积环境控制了白云石化作用和溶蚀作用的发生,而构造背景则与裂缝的发育相关;其盖层受白云石化环境的控制,主要以海相页岩和蒸发岩为主。%By analyzing the data of the 137 dolomite reservoirs in the world with the C&C digital analogs knowledge system,the location of the oilfields,the structural setting,the type of basin,the depositional environment and the age of the dolomite strata were all investigated researched.The target is to find the relation between the production and these elements mentioned above.The geographical distribution of the dolomite fields are not evenly.Most of the dolomite fields were onshore oilfield,mainly distribute on the North America,Asia and Europe.The plate tectonics controlled these distribution: most of them have been discovered in compressional basins,especially in the suture belt,such as foreland basin and so on,but few dolomite fields can be found in the rift basin or the passive continental margin.The oil and gas accumulated in the Mesozoic and Paleozoic,mainly from the Cretaceous and Triassic.The next major

  4. [Tai ping sheng hui fang (Taiping Holy Prescriptions for Universal Relief) and the compilation during the early Song Dynasty].

    Science.gov (United States)

    Han, Yi

    2010-07-01

    Tai ping sheng hui fang, the first medical formulary of the Song Dynasty, compiled from the 3(rd) year of Taiping-xingguo reign to the 3(rd) year of Chunhua reign (978 ∼ 992), under the edict of the Taizong Emperor, was popularly applied and extensively circulated and called "the first formulary of the Dynasty". It is extremely significant in the medical history of the Song Dynasty due to its theory of prescription art, practical prescriptions and clinical practice. During the process of its circulation, different versions appeared, including the Guozijian Orthodox Version, Guozijian Small-character Version, Chongwen Hall Abridged Version, Newly Carved Version of Zhuanyunsi, and the Local Abridged Version, thus adapting to the demands of various walks of life in the society. Its unique role in the development of the Song society was founded by its introduction, application and popularization by the emperors, local officials, medical scholars, diplomatic envoys, and intellectuals. The "kind administration" of the authority and the government was further greatly facilitated by the involvement of the government and the introduction of printing. Its practical prescriptions became forceful tools to prevent and treat diseases, to conquer witchcraft, to protect local social security, and to pronounce the merits of officials and physicians at all levels.

  5. Authigenic albite formation due to water-rock interactions - Case study: Magnus oilfield (UK, Northern North Sea)

    Science.gov (United States)

    Mu, Nana; Fu, Yunjiao; Schulz, Hans-Martin; van Berk, Wolfgang

    2016-01-01

    It is the aim of this contribution to test whether organic-inorganic interactions could induce the formation of authigenic albite. This concept and related results are being compared with modelling scenarios which are purely based on inorganic geochemical reactions. In order to unravel the pathway of authigenic albite formation, this paper presents results of a multidisciplinary study from imaging, geochemistry, mineralogy, and hydrogeochemical modelling. The Jurassic reservoir sandstones of the Magnus oilfield (UK, North Sea) were chosen as a test site. Albite occurs with 4-18 wt.% in the Magnus sandstones and its contents vary with depth. However, albite contents increase with increasing K-feldspar contents and decreasing grain size. It occurs in three forms: (1) as lamellae in perthite, (2) as overgrowth on/in corroded feldspar, and, (3) as cloudy replacing albite patches in K-feldspar. The albite overgrowth has the highest chemical purity (100% albite) whilst albite lamellae and replacing albite patches are slightly less pure (containing 1-4% anorthite). Albite appears non-altered, and has a euhedral morphology and dull cathodoluminescence. It commonly co-occurs with corroded K-feldspar grains. The precipitation of diagenetic albite in the Magnus sandstones is attributed to deep burial 80 Ma ago and may have continued until today at temperatures between 90-120 °C. The results of hydrogeochemical modelling offer two possible pathways for the authigenic albite formation: (1) Dissolution of unstable minerals (such as kaolinite and chalcedony) coupled to reduction of ferric iron minerals by products generated during oil generation, migration and degradation; (2) Dissolution of non-end member feldspar, such as K-feldspar with 10% albite, coupled to illite formation can account for trace amounts of albite due to an elevated Na+/K+ activity ratio in the pore water.

  6. Application of RMT Residual Oil Saturation Logging Technology in Tahe Oilfield%RMT剩余油饱和度测井技术在塔河油田的应用

    Institute of Scientific and Technical Information of China (English)

    胡全发; 李晓宇; 郝身立; 王琳; 阚朝晖

    2015-01-01

    This paper introduces the principle of RMT residual oil saturation logging, focuses on the advantages of RMT residual oil satura-tion logging technology and its application in Tahe oilfield. The application of RMT logging can re-evaluate the various geological parameters of reservoir after waterflooding, and provide accurate porosity, residual oil saturation and other physical property and oily parameters for oil-field development.%文章介绍了RMT剩余油饱和度测井原理,着重分析了RMT剩余油饱和度测井技术优势及在塔河油田的应用,应用RMT测井新技术可对储层水淹后的各种地质参数进行重新评价,为油田后期开发提供准确的孔隙度,剩余油饱和度等物性和含油性参数,具有非常广的应用前景。

  7. Use of Remote Sensing Data and GIS Tools for Seismic Hazard Assessment for Shallow Oilfields and its Impact on the Settlements at Masjed-i-Soleiman Area, Zagros Mountains, Iran

    Directory of Open Access Journals (Sweden)

    Hojjat Ollah Safari

    2010-05-01

    Full Text Available Masjed-i-Soleiman (MIS is situated in the northern part of the Dezful embayment, which is in the Zagros fold–thrust belt with high seismic activities. MIS faces a shallow buried anticline, formed by the shallowest oilfield with a thick gas cap. The cap rocks of this oilfield are highly fractured, which has resulted in leakages from the gas cap. In this paper, we have used remote sensing techniques and image interpretation for the identification of the Niayesh, Lahbari, Andika and MIS fault zones in the studied area. Further, the study exploited seismic potential mapping using the remote sensing techniques. The relationships between the structural controls and localized gas leakage are assessed within the GIS environment. Additionally, field observation data corroborated that the leakages (and seepages are smashed within the intersection of Niayesh and MIS fault zone, which belongs to the high fractured hinge zone of the MIS anticline. As a result, the reactivation of these active faults may cause large earthquakes with a maximum magnitude of between 6.23 < Ms < 7.05 (Richter scale and maximum horizontal acceleration 0.26 < a < 0.55 g. Finally, the authors concluded that this anticipated earthquake may cause large scale fracturing of cap rocks, releasing a large volume of H2S gas from the uppermost layer of the reservoir.

  8. Research on Drilling and Completion Fluid Technology for Protection of Oil-Gas Formations in Fushan Oilfield%福山油田保护油气层钻井完井液技术研究

    Institute of Scientific and Technical Information of China (English)

    王建标

    2013-01-01

    Fushan oilfield is a typical condensate reservoir.The reservoir porosity is 10%~20%.The average reservoir permeability is 35 ×10 -3μm2 .It belongs to medium porosity and low permeability reservoir, and part being with low poros-ity and extra-low permeability.It is water sensitive and easy to collapse.By the test, XZD-Ⅱtemporary plugging agent was selected as shielding temporary plugging drilling and completion fluid to protect oil-gas formation with good effects.%  福山油田为典型凝析油气藏,储层孔隙度10%~20%,平均渗透率35×10-3μm 2,属于中孔低渗储层,部分为低孔特低渗储层,且水敏、易塌。通过试验选用了以XZD-Ⅱ为暂堵剂的屏蔽暂堵钻井完井液实施油气层保护,取得了较好的保护效果。

  9. Three-component seismic data in thin interbedded reservoir exploration

    Institute of Scientific and Technical Information of China (English)

    Zhang Li-Yan; Wang Yan-Chun; Pei Jiang-Yun

    2015-01-01

    We present thefi rst successful application of three-component seismic data to thin interbedded reservoir characterization in the Daqing placanticline of the LMD oilfield. The oilfi eld has reached thefi nal high water cut stage and the principal problem is how to recognize the boundaries of sand layers that are thicker than 2 m. Conventional interpretation of single PP-wave seismic data results in multiple solutions, whereas the introduction of PS-wave enhances the reliability of interpretation. We analyze the gas reservoir characteristics by joint PP- and PS-waves, and use the amplitude and frequency decomposition attributes to delineate the gas reservoir boundaries because of the minimal effect offl uids on S-wave. We perform joint inversion of PP- and PS-waves to obtainVP/VS,λρ, andμρ and map the lithology changes by using density,λρ, andμρ. The 3D–3C attributeλρ slices describe the sand layers distribution, while considering the well log data, and point to favorable region for tapping the remaining oil.

  10. Reservoir geochemistry. A reservoir engineering perspective

    Energy Technology Data Exchange (ETDEWEB)

    England, W.A. [BP Exploration, Chertsey Road, Sunbury-on-Thames, Middlesex, TW16 7LN (United Kingdom)

    2007-09-15

    This paper reviews the applications of reservoir geochemistry from a reservoir engineering point of view. Some of the main tasks of reservoir engineering are discussed with an emphasis on the importance of appraising reservoirs in the pre-development stage. A brief review of the principal methods and applications of reservoir geochemistry are given, in the context of applications to reservoir engineering problems. The importance of compositional differences in fluid samples from different depths or spatial locations is discussed in connection with the identification of internal flow barriers. The importance of understanding the magnitude and origin of vertical compositional gradients is emphasised because of possible confusion with purely lateral changes. The geochemical origin and rate of dissipation of compositional differences over geological time is discussed. Geochemical techniques suitable for bulk petroleum fluid samples include GC fingerprinting, GCMS, isotopic and PVT measurements. Core sample petroleum extracts may also be studied by standard geochemical methods but with the added complication of possible contamination by drilling mud. Aqueous phase residual salt extracts can be studied by strontium isotope analysis from core samples. Petroleum fluid inclusions allow the possibility of establishing the composition of paleo-accumulations. The problems in predicting flow barriers from geochemical measurements are discussed in terms of 'false positives' and 'false negatives'. Suggestions are made for areas that need further development in order to encourage the wider acceptance and application of reservoir geochemistry by the reservoir engineering community. The importance of integrating all available data is emphasised. Reservoir geochemistry may be applied to a range of practical engineering problems including production allocation, reservoir compartmentalisation, and the prediction of gravitational gradients. In this review

  11. Oil/Gas Accumulation Characteristics and Exploration Methods of the Deltaic Lithologic Reservoirs in Northern Shaanxi Area

    Institute of Scientific and Technical Information of China (English)

    YangHua; FuJinhua; YuJian; DuJinliang; MuJingkui

    2004-01-01

    There are large deltaic systems in the Triassic Yanchang Formation in the northern Shaanxi area of the Ordos Basin, and developed two sets of good source-reservoir-caprock assemblages and many sets of oil-beating beds. Exploration experience demonstrates that the formation and distribution of the reservoir were controlled by the generative depression of the Yanchang Formation, and deltaic reservoir sand body is the material basis for large-scale oilfields. In addition, secondary laumontite in a low permeable area was dissolved and then a high permeable area was formed. The updip lithologic variety of reservoir sand bodies is favorable to the formation of subtle lithologic traps, and the deltaic reservoirs are characterized by large multi-beds of oil-generation and abundant hydrocarbon resources. In this paper, the petroleum geologic settings of the studied area are analyzed, and the accumulation characteristics and exploration methods of lithologic reservoirs are summarized. It is of theoretical significance for the study of the exploration theories of lithologic reservoirs, and also expedites the exploration steps of deltaic reservoirs in the northern Shaanxi area.

  12. A new approach of proration-injection allocation for water-flooding mature oilfields

    Directory of Open Access Journals (Sweden)

    Shuyong Hu

    2015-03-01

    Full Text Available This paper presents a new method of injection-production allocation estimation for water-flooding mature oilfields. The suggested approach is based on logistic growth rate functions and several type-curve matching methods. Using the relationship between these equations, oil production and water injection rate as well as injection-production ratio can be easily forecasted. The calculation procedure developed and outlined in this paper requires very few production data and is easily implemented. Furthermore, an oilfield case has been analyzed. The synthetic and field cases validate the calculation procedure, so it can be accurately used in forecasting production data, and it is important to optimize the whole injection-production system.

  13. Effects of oilfield brinewater discharges on Western sandpipers (Calidris mauri) in Nueces Bay, Texas

    Science.gov (United States)

    Capizzi, J.L.; King, K.A.; Melancon, M.J.; Rattner, B.A.; LeCaptain, L.

    1993-01-01

    Western sandpipers (Calidris mauri) were studied at an oilfield brinewater discharge site near Corpus Christi, Texas, and at a reference site near Galveston, Texas. Morphological indices, hepatic monooxygenase activities, and contaminant burdens were quantified to evaluate exposure and effects. Pooled stomach contents of birds collected at the discharge site contained higher concentrations of petroleum hydrocarbons than the reference site. Total pristane concentration, and the ratio of pristane:n-heptadecane in sandpiper carcasses were significantly greater at the oil discharge site, indicative of chronic exposure. Concentrations of other organic contaminants (petroleum aromatic hydrocarbons, polychlorinated biphenyls and organochlorine pesticides and metabolites) in carcasses at both study sites were relatively low. Neither body weight, bill length or hepatic monooxygenase activities differed between sites, although liver weight and liver weight:body weight ratio were significantly lower at the discharge site. These data suggest that oilfield brinewater discharges have only limited toxicity to sandpipers wintering near the site.

  14. Remediation of wellsites in an Alberta historical oilfield undergoing urban development

    Energy Technology Data Exchange (ETDEWEB)

    Payne, P.; Sakura, W. [Orphan Well Association, Calgary, AB (Canada)

    2010-07-01

    Alberta's Turner Valley has a history of oilfield development from the 1910s to the 1940s. This presentation provided a brief history of the Turner Valley area and discussed the remediation of Miracle number 3 well site and remediation of Okalta number 22 well site. Urban development near the historical wells was also discussed. Many photos were presented to provide context to the area and oil oilfield development. Specific topics that were discussed regarding Miracle number 3 well included environmental site assessments; soil gas testing; remediation; remedial excavation; and in situ remediation. Regarding Okalta number 22 well site, the following topics were discussed: environmental site assessments; geology; bedrock geology; results of environmental site assessments; remediation; and treatment of hydrocarbon impacted soils. It was concluded that the accomplishments made by the industry funded orphan program in Alberta have been rewarding. figs.

  15. Development Optimization and Uncertainty Analysis Methods for Oil and Gas Reservoirs

    Energy Technology Data Exchange (ETDEWEB)

    Ettehadtavakkol, Amin, E-mail: amin.ettehadtavakkol@ttu.edu [Texas Tech University (United States); Jablonowski, Christopher [Shell Exploration and Production Company (United States); Lake, Larry [University of Texas at Austin (United States)

    2017-04-15

    Uncertainty complicates the development optimization of oil and gas exploration and production projects, but methods have been devised to analyze uncertainty and its impact on optimal decision-making. This paper compares two methods for development optimization and uncertainty analysis: Monte Carlo (MC) simulation and stochastic programming. Two example problems for a gas field development and an oilfield development are solved and discussed to elaborate the advantages and disadvantages of each method. Development optimization involves decisions regarding the configuration of initial capital investment and subsequent operational decisions. Uncertainty analysis involves the quantification of the impact of uncertain parameters on the optimum design concept. The gas field development problem is designed to highlight the differences in the implementation of the two methods and to show that both methods yield the exact same optimum design. The results show that both MC optimization and stochastic programming provide unique benefits, and that the choice of method depends on the goal of the analysis. While the MC method generates more useful information, along with the optimum design configuration, the stochastic programming method is more computationally efficient in determining the optimal solution. Reservoirs comprise multiple compartments and layers with multiphase flow of oil, water, and gas. We present a workflow for development optimization under uncertainty for these reservoirs, and solve an example on the design optimization of a multicompartment, multilayer oilfield development.

  16. Risk assessment of nonhazardous oil-field waste disposal in salt caverns.

    Energy Technology Data Exchange (ETDEWEB)

    Elcock, D.

    1998-03-05

    In 1996, Argonne National Laboratory (ANL) conducted a preliminary technical and legal evaluation of disposing of nonhazardous oil-field wastes (NOW) into salt caverns. Argonne determined that if caverns are sited and designed well, operated carefully, closed properly, and monitored routinely, they could be suitable for disposing of oil-field wastes. On the basis of these findings, Argonne subsequently conducted a preliminary evaluation of the possibility that adverse human health effects (carcinogenic and noncarcinogenic) could result from exposure to contaminants released from the NOW disposed of in domal salt caverns. Steps used in this evaluation included the following: identifying potential contaminants of concern, determining how humans could be exposed to these contaminants, assessing contaminant toxicities, estimating contaminant intakes, and calculating human cancer and noncancer risk estimates. Five postclosure cavern release scenarios were assessed. These were inadvertent cavern intrusion, failure of the cavern seal, failure of the cavern through cracks, failure of the cavern through leaky interbeds, and a partial collapse of the cavern roof. Assuming a single, generic, salt cavern and generic oil-field wastes, potential human health effects associated with constituent hazardous substances (arsenic, benzene, cadmium, and chromium) were assessed under each of these scenarios. Preliminary results provided excess cancer risk and hazard index (referring to noncancer health effects) estimates that were well within the US Environmental Protection Agency (EPA) target range for acceptable exposure risk levels. These results led to the preliminary conclusion that from a human health perspective, salt caverns can provide an acceptable disposal method for nonhazardous oil-field wastes.

  17. Removal of boron from oilfield wastewater via adsorption with synthetic layered double hydroxides.

    Science.gov (United States)

    Delazare, Thais; Ferreira, Letícia P; Ribeiro, Nielson F P; Souza, Mariana M V M; Campos, Juacyara C; Yokoyama, Lídia

    2014-01-01

    Hydrotalcite is a layered double hydroxide (LDH) consisting of brucite-like sheets of metal ions (Mg-Al). In this work, hydrotalcites were synthesized, and boron removal from oilfield wastewater was evaluated. LDHs were synthesized using the co-precipitation method. The calcined products (CLDHs) were obtained by heating at 500°C and characterized using X-ray diffraction, X-ray fluorescence, thermogravimetric analysis and the specific surface area (BET). The affinity of LDHs for borate ions was evaluated for calcined and uncalcined LDHs as a function of contact time, initial pH of the oilfield wastewater (pH ∼ 9) and the LDH surface area. The tests were conducted at room temperature (approximately 25ºC). The results indicated that 10 min were needed to reach a state of equilibrium during boron removal for calcined LDHs due to the high surface area (202.3 m(2) g(-1)) regardless of the initial pH of the oilfield wastewater, which resulted from the high buffering capacity of the LDHs. The adsorption capacity increased as the adsorbents levels increased for the range studied. After treatment of the oilfield wastewater containing 30 mg L(-1) of boron with Mg-Al-CO3-LDHs, the final concentration of boron was within the discharge limit set by current Brazilian environmental legislation, which is 5 mg L(-1). Pseudo-first-order and pseudo-second-order kinetic models were tested, and the latter was found to fit the experimental data better. Isotherms for boron adsorption by CLDHs were well described using the Langmuir and Freundlich equations.

  18. Biomarker characteristics of the Turonian–Eocene succession, Belayim oilfields, central Gulf of Suez, Egypt

    OpenAIRE

    W.Sh. El Diasty; A.A. Abo Ghonaim; A.R. Mostafa; S.Y. El Beialy; Edwards, K. J.

    2016-01-01

    This study assesses the hydrocarbon source rocks of the Belayim oilfields, central Gulf of Suez, Egypt. Detailed geochemical methods, including liquid chromatography, gas chromatography and gas chromatography–mass spectrometry, are used to characterize organic-rich facies of the Turonian–Eocene deposits. Crude oil samples are analyzed using C7 and stable carbon isotopes, in addition to analysis of the extracts, in order to throw light on the organic matter source, composition, and thermal mat...

  19. Large reservoirs: Chapter 17

    Science.gov (United States)

    Miranda, Leandro E.; Bettoli, Phillip William

    2010-01-01

    Large impoundments, defined as those with surface area of 200 ha or greater, are relatively new aquatic ecosystems in the global landscape. They represent important economic and environmental resources that provide benefits such as flood control, hydropower generation, navigation, water supply, commercial and recreational fisheries, and various other recreational and esthetic values. Construction of large impoundments was initially driven by economic needs, and ecological consequences received little consideration. However, in recent decades environmental issues have come to the forefront. In the closing decades of the 20th century societal values began to shift, especially in the developed world. Society is no longer willing to accept environmental damage as an inevitable consequence of human development, and it is now recognized that continued environmental degradation is unsustainable. Consequently, construction of large reservoirs has virtually stopped in North America. Nevertheless, in other parts of the world construction of large reservoirs continues. The emergence of systematic reservoir management in the early 20th century was guided by concepts developed for natural lakes (Miranda 1996). However, we now recognize that reservoirs are different and that reservoirs are not independent aquatic systems inasmuch as they are connected to upstream rivers and streams, the downstream river, other reservoirs in the basin, and the watershed. Reservoir systems exhibit longitudinal patterns both within and among reservoirs. Reservoirs are typically arranged sequentially as elements of an interacting network, filter water collected throughout their watersheds, and form a mosaic of predictable patterns. Traditional approaches to fisheries management such as stocking, regulating harvest, and in-lake habitat management do not always produce desired effects in reservoirs. As a result, managers may expend resources with little benefit to either fish or fishing. Some locally

  20. NUMERICAL SIMULATION STUDY ON SURFACTANT FLOODING FOR LOW PERMEABILITY OILFIELD IN THE CONDITION OF THRESHOLD PRESSURE

    Institute of Scientific and Technical Information of China (English)

    YIN Dai-yin; PU Hui

    2008-01-01

    Based on the non-Darcy flow characteristics of surfactant flooding in the low permeability oilfield, considering the changes of threshold pressure and influence of surfactant on convection, diffusion, adsorption and retention, a mathematical model is established for a three-dimensional, two-phase, three-component surfactant flooding. A new treatment for the changes of threshold pressure and a novel correction method for the relative permeability curve in the process of surfactant flooding are derived, which enhances the matching degree between the mathematical model and field practice. The mathematical model was used to perform the numerical simulation study for a pilot test of surfactant flooding in Chao 45 Block of Daqing Oilfield, a proper injection plan was optimized. After the optimized plan was carried out in oilfield, the desirable effects, like pressure-reducing, injection rate increase, and the increase of oil recovery, were achieved. The average oil increase for single well reaches 37%, the ratio of cost to revenue is above 1:4, so the economic effect of scale is promising.

  1. Estimate of Hot Dry Rock Geothermal Resource in Daqing Oilfield, Northeast China

    Directory of Open Access Journals (Sweden)

    Guangzheng Jiang

    2016-10-01

    Full Text Available Development and utilization of deep geothermal resources, especially a hot dry rock (HDR geothermal resource, is beneficial for both economic and environmental consideration in oilfields. This study used data from multiple sources to assess the geothermal energy resource in the Daqing Oilfield. The temperature logs in boreholes (both shallow water wells and deep boreholes and the drilling stem test temperature were used to create isothermal maps in depths. Upon the temperature field and thermophysical parameters of strata, the heat content was calculated by 1 km × 1 km × 0.1 km cells. The result shows that in the southeastern part of Daqing Oilfield, the temperature can reach 150 °C at a depth of 3 km. The heat content within 3–5 km is 24.28 × 1021 J, wherein 68.2% exceeded 150 °C. If the recovery factor was given by 2% and the lower limit of temperature was set to be 150 °C, the most conservative estimate for recoverable HDR geothermal resource was 0.33 × 1021 J. The uncertainties of the estimation are mainly contributed to by the temperature extrapolation and the physical parameter selections.

  2. Research of Optimization Method of Swabbing Parameters of All Rods Pumping Wells in the Entire Oilfield

    Directory of Open Access Journals (Sweden)

    Zhang Xishun

    2013-03-01

    Full Text Available Aiming at the drawbacks of the optimization and design methods and the practical production goal of least energy consumption, a new theory is raised that the gas of the layer released energy in the lifting process including two parts: dissolved-gas expansion energy and free-gas expansion energy. The motor’s input power of rod pumping system is divided into hydraulic horse power, gas expansion power, surface mechanical loss power, subsurface loss power. Using the theory of energy-conservation, the simulation model of free-gas expansion power has been established, the simulating models of the motor’s input power which are based on the energy method have been improved and the simulation precision of system efficiency has been enhanced. The entire optimization design models have been set up in which the single-well output is taken as the optimum design variable, the planed production of all oil wells in an overall oilfield as the restraint condition and the least input power of the overall oilfield as the object. Synthesizing the optimization design results of the single well and the entire oilfield, the optimal output and the optimal swabbing parameters of all wells can be got. The actual optimizing examples show that the total power consumption designed by the entire optimization method is less 12.95% than that by the single optimization method.

  3. Polycyclic Aromatic Hydrocarbons in the Dagang Oilfield (China: Distribution, Sources, and Risk Assessment

    Directory of Open Access Journals (Sweden)

    Haihua Jiao

    2015-05-01

    Full Text Available The levels of 16 polycyclic aromatic hydrocarbons (PAHs were investigated in 27 upper layer (0–25 cm soil samples collected from the Dagang Oilfield (China in April 2013 to estimate their distribution, possible sources, and potential risks posed. The total concentrations of PAHs (∑PAHs varied between 103.6 µg·kg−1 and 5872 µg·kg−1, with a mean concentration of 919.8 µg·kg−1; increased concentrations were noted along a gradient from arable desert soil (mean 343.5 µg·kg−1, to oil well areas (mean of 627.3 µg·kg−1, to urban and residential zones (mean of 1856 µg·kg−1. Diagnostic ratios showed diverse source of PAHs, including petroleum, liquid fossil fuels, and biomass combustion sources. Combustion sources were most significant for PAHs in arable desert soils and residential zones, while petroleum sources were a significant source of PAHs in oilfield areas. Based ontheir carcinogenity, PAHs were classified as carcinogenic (B or not classified/non-carcinogenic (NB. The total concentrations of carcinogenic PAHs (∑BPAHs varied from 13.3 µg·kg−1 to 4397 µg·kg−1 across all samples, with a mean concentration of 594.4 µg·kg−1. The results suggest that oilfield soil is subject to a certain level of ecological environment risk.

  4. Improved reservoir exploitation

    Energy Technology Data Exchange (ETDEWEB)

    Thomassen, P.R. [IKU Petroleumsforskning A/S, Trondheim (Norway)

    1996-12-31

    This paper deals with reservoir exploitation and it highlights some ideas on how to improve exploitive skills to optimise the recovery of a field. The author looks closer at what needs to be done to optimise the reservoir data and the exploitation tools, and what are the needs of the reservoir production management. 2 refs., 3 figs.

  5. A Study of Thin Sandstone Reservoirs by High-resolution Seismic Inversion

    Institute of Scientific and Technical Information of China (English)

    Ning Songhua

    2006-01-01

    In this paper seismic inversion was used as a key technique and the seismic wavelet most suitable to the actual underground situation was extracted with the higher-order statistics algorithm. The wavelets extracted in this way and the wavelets extracted with the seismic statistics techniques were used separately for inverting the seismic data of the southern part of Tahe oilfield, Tarim basin. The results showed that the resolution of the wavelet inversion with the higher-order statistics method was greatly improved, and the wavelet-inverted section could better distinguish the thin sandstone reservoirs of the upper and lower Carboniferous and their lateral distribution, providing a reliable basis of analysis for the study of thin sandstone reservoirs.

  6. 生脉颗粒质量标准研究%Research on Quality Standard of ShengMai Granules

    Institute of Scientific and Technical Information of China (English)

    王莲萍; 刘专专; 孙岩; 杨玉华; 孙裕

    2014-01-01

    Objective:To establish a method for quality standard of ShengMai granules. Methods:The contents of schisandrin in WuWeiZi (Schisandra chinensis) were determined by HPLC and distinguished by TLC. Chromatographic column:phenomenex Luna C18 (150×4.60 mm, 5μm);mobile phase:methyl alcohol-0.1%phosphoric acid solution (60∶40);flow rate:1.0 mL/min;detection wavelength:250 nm. Results:TLC method was simple and the blank test demonstrated no interference. Schisandrin demonstrated better linear relationship in the range between 0.0 712 and 2.136μg, r=0.9 99 9, average recovery rate was 97.23%. Conclusion:The method is simple, rapid, specific and feasible.%目的:建立生脉颗粒质量标准控制方法。方法:采用TLC五味子薄层鉴别方法以及HPLC法测定五味子中五味子醇甲的含量。色谱柱:phenomenexLuna C18(150×4.60 mm,5μm);流动相:甲醇-0.1%磷酸溶液(60∶40);流速:1.0 mL/min;检测波长:250 nm。结果:薄层鉴别方法简单,阴性无干扰;五味子醇甲在0.0712~2.136μg呈良好的线性关系,r=0.9999,平均回收率为97.23%;结论:该方法简单、快速、专属性强、可操作性强。

  7. Distribution and geological feature of the coal-Ge deposit of Shengli coalfield in Inner Mongolia of China

    Energy Technology Data Exchange (ETDEWEB)

    Huang Wen-hui; Sun Lei; Ma Yan-ying; Wan Huan; Tang Xiu-Yi (and others) [China University of Geosciences, Beijing (China). School of Energy Resources

    2007-11-15

    The paper discusses the geology of the coal-germanium (coal-Ge) deposits and the distribution of germanium in the coal seams of the Shengli coalfield. This coalfield is in the Wunite depression in the west of the Erlian basin and belongs to a wide syncline and the layer is smooth. The coal-Ge grew in the Early Cretaceous period of fault depression. The distribution of the high germanium layer is controlled by two faults which are on both sides, and the layer is shallow and thin in the south and deep and thick in the north. The concentration of germanium is high in both south and north (>400 x 10{sup -6}) and lower in east and west (about 200 x 10{sup -6}), like a saddle. The concentration declines quickly towards the centre of the basin. On the vertical, there can be several peak values on the coal column. The dirt band of the bottom of the coal column has an industrial value higher than industrial grade. On the top layer and backplane the concentration is very low and has no industrial value. The distribution of germanium is associated with the mineralized palaeogeology, the change of palaeoenvironment and is affected by the swamp micro-milieu and hydrodynamic forces. These make the germanium concentration undulatory in the coal seam. Adopting the method of geologic block, the estimated reserves of germanium are about 1,805 t in an estimated area of 1,0975 km{sup 2}. 19 refs., 3 figs., 1 tab.

  8. IRP/DSM Research and Demonstrating Engineering Report of Shengli Oil Field%胜利油田IRP/DSM研究与示范工程报告

    Institute of Scientific and Technical Information of China (English)

    刘军; 江武敏; 高月民; 张小宁; 严川; 尤春蓉

    2002-01-01

    @@ 1 Project Background In July 1995, China Oil and Natural Gas Corporation brings forward IRP/DSM research at the "9th Five-year Plan" electric program and research' s meeting. In July 1996, China Traffic and Energy Department of the State Planning Committee authorized the project about IRP/DSM research at Shengli Oil Field. In 1997, the project was put in oil field key science and technology program. This is a project about IRP/DSM research and implementation with key body of large electric users, and is the first project as the key body of large electric users inland.

  9. Status of Wheeler Reservoir

    Energy Technology Data Exchange (ETDEWEB)

    1990-09-01

    This is one in a series of status reports prepared by the Tennessee Valley Authority (TVA) for those interested in the conditions of TVA reservoirs. This overview of Wheeler Reservoir summarizes reservoir purposes and operation, reservoir and watershed characteristics, reservoir uses and use impairments, and water quality and aquatic biological conditions. The information presented here is from the most recent reports, publications, and original data available. If no recent data were available, historical data were summarized. If data were completely lacking, environmental professionals with special knowledge of the resource were interviewed. 12 refs., 2 figs.

  10. Status of Cherokee Reservoir

    Energy Technology Data Exchange (ETDEWEB)

    1990-08-01

    This is the first in a series of reports prepared by Tennessee Valley Authority (TVA) for those interested in the conditions of TVA reservoirs. This overviews of Cherokee Reservoir summarizes reservoir and watershed characteristics, reservoir uses and use impairments, water quality and aquatic biological conditions, and activities of reservoir management agencies. This information was extracted from the most current reports, publications, and data available, and interviews with water resource professionals in various Federal, state, and local agencies and in public and private water supply and wastewater treatment facilities. 11 refs., 4 figs., 1 tab.

  11. Status of Cherokee Reservoir

    Energy Technology Data Exchange (ETDEWEB)

    1990-08-01

    This is the first in a series of reports prepared by Tennessee Valley Authority (TVA) for those interested in the conditions of TVA reservoirs. This overviews of Cherokee Reservoir summarizes reservoir and watershed characteristics, reservoir uses and use impairments, water quality and aquatic biological conditions, and activities of reservoir management agencies. This information was extracted from the most current reports, publications, and data available, and interviews with water resource professionals in various Federal, state, and local agencies and in public and private water supply and wastewater treatment facilities. 11 refs., 4 figs., 1 tab.

  12. Pilot Test Research on Steam Flooding in Huanxiling Oilfield Jin 92 Block%欢喜岭油田锦92块转蒸汽驱先导试验研究

    Institute of Scientific and Technical Information of China (English)

    张云怡

    2015-01-01

    Based on the comprehensive collection and sorting of the dynamic and static data of Huanxiling Oilfield Jin 92 Block and dedicated description of reservoir geological body and aiming at improving the development effect, this article analyzes the potential and feasibility of steam blooding of this block and the pilot test area is selected. In the pilot test, the black oil thermal recovery numerical simulation, steam flooding well pattern optimization deployment and other technologies are applied to carry out steam flooding reservoir engineering design, which provides beneficial reference for the development mode transformation of similar reservoir.%本文以全面收集、整理欢喜岭油田锦92块各项动、静态资料为前提,精细刻画油藏地质体为基础,改善开发效果为目标,对该块转蒸汽驱的潜力及可行性进行分析,优选了先导试验区。先导试验研究中综合应用黑油热采数值模拟、汽驱井网优化部署等各类技术开展蒸汽驱油藏工程设计,为同类吞吐后期油藏的开发方式转换提供了有益借鉴。

  13. 陕北LFP油田注水开发效果分析%Waterflooding effect analysis of the LFP oilfield in the northern part of Shaanxi

    Institute of Scientific and Technical Information of China (English)

    洪荆晶; 邓媛; 王海军; 吴汉宁

    2011-01-01

    The LFP oilfield in the Ordos basin is rich in oil and gas,under the premise of low porosity and low permeability reservoir,waterflooding technique has adopted to improve the extraction percentage.We analyze waterflooding technique applications and effects in the main layers of this field,meanwhile,make contrastive analysis between exploration achievements and exploitation materials to Chang1 layer,thus to put forward corresponding suggestions of these layers to improve the extraction percentage in this oil field.This article is an exploration for comprehensive analysis by combinating exploration achievements and exploitation materials.%鄂尔多斯盆地LFP区块中生代油藏油气资源较丰富,在低孔、低渗的前提下为提高采收率采用了注水开发技术。本文对该区各主要层段的注水开发应用状态及效果进行了分析,同时从勘探成果与开发资料进行对比分析的角度针对各层的特点提出了相应的调整建议。本文是用勘探与开发资料进行综合分析的一个探索。

  14. 精准帮扶贫困水库移民工作的探索与实践%Exploration and practice of precisely helping the poor reservoir immigration

    Institute of Scientific and Technical Information of China (English)

    杨奕; 李桂林

    2016-01-01

    石梁河库区是江苏重点扶贫片区,为了切实帮助水库移民解困脱贫奔小康,省移民办以石梁河镇胜泉村为典型开展结对共建,力求通过水库移民后期扶持政策与扶贫开发政策叠加,最大效能帮助移民村尽早脱贫。%Shilianghe reservoir area is the key poverty alleviation area of Jiangsu. In order to effectively help the reservoir immigration strive for a relatively comfortable life,the immigration office take action to co-work with Sheng Quan village Shilianghe town. Through superposition of the latter support policy for reservoir resettlement and poverty alleviation policy,to help lift immigrants village from poverty as soon as possible.

  15. 高分辨率层序地层学在河流相油田开发中的应用%Application of High-resolution Sequence Stratigraphy of Fluvial Facies in Development of Oilfield

    Institute of Scientific and Technical Information of China (English)

    胡光义; 陈飞; 孙立春; 范廷恩; 赵春明; 吴胜和

    2013-01-01

    Fluvial sandbody is one of the most important hydrocarbon reservoirs in China.Using of high-resolution sequence stratigraphy in fluvial facies in development of oilfield is very important to the Guidance of fluvail sandbod Subdivision and Correlation.There are complex factors,including fluvial facies autocyclicity sediment,the effect of sedimentary surface,channel pattern and sandbody architecture,and the orders of base-level cycles,which resulted in the difficulty to define subdivision and correlation.According to the theory and approach of high-resolution sequence stratigraphy,combining with fluvial facies model,lithofacies and facies sequence and association,and key surface correlation,reservoir fluid correlation and channel erosion and fill,fluvial reservoir subdivision and comparison have been carried out.Provided a clue and methods on the fluvial facies subdivision and correlation in development of oilfield of intermediary and later stage,in order to be helpful to product and develop of oilfield.In Minghuazhen Formation Bohai Q Oilfield,It has achieved good results in the practical application.%河流相是我国陆相盆地重要的油气储集层系类型之一,开发阶段应用高分辨率层序地层学进行河流相高精度小层划分,对于指导河道砂体的精细划分对比有重要意义.由于受到河流相地层自旋回沉积、沉积间歇面的作用、河型和砂体叠置样式的变化以及基准面旋回的级次的划分等复杂因素的影响,在开发阶段进行高精度层序对比时,难度更大.运用高分辨率层序地层学原理和方法,综合分析河流相模式的特点,充分利用河流相岩相、相序的组合特征随空容纳空间规律性变化,结合各种关键面的约束控制、油水界面在小层内部空间的分布位置以及河道的切割充填作用,进行精细河流相小层划分对比.旨在摸索一套油田开发中后期河流相高精度层序划分的思路和方法,以指导油田

  16. Cardioprotection by combination of three compounds from ShengMai preparations in mice with myocardial ischemia/reperfusion injury through AMPK activation-mediated mitochondrial fission

    Science.gov (United States)

    Li, Fang; Fan, Xiaoxue; Zhang, Yu; Pang, Lizhi; Ma, Xiaonan; Song, Meijia; Kou, Junping; Yu, Boyang

    2016-01-01

    GRS is a drug combination of three active components including ginsenoside Rb1, ruscogenin and schisandrin. It derived from the well-known TCM formula ShengMai preparations, a widely used traditional Chinese medicine for the treatment of cardiovascular diseases in clinic. The present study explores the cardioprotective effects of GRS on myocardial ischemia/reperfusion (MI/R) injury compared with ShengMai preparations and investigates the underlying mechanisms. GRS treatment significantly attenuated MI/R injury and exhibited similar efficacy as Shengmai preparations, as evidenced by decreased myocardium infarct size, ameliorated histological features, the decrease of LDH production and improved cardiac function, and also produced a significant decrease of apoptotic index. Mechanistically, GRS alleviated myocardial apoptosis by inhibiting the mitochondrial mediated apoptosis pathway as reflected by inhibition of caspase-3 activity, normalization of Bcl-2/Bax levels and improved mitochondrial function. Moreover, GRS prevented cardiomyocytes mitochondrial fission and upregulated AMPKα phosphorylation. Interestingly, AMPK activation prevented hypoxia and reoxygenation induced mitochondrial fission in cardiomyocytes and GRS actions were significantly attenuated by knockdown of AMPKα. Collectively, these data show that GRS is effective in mitigating MI/R injury by suppressing mitochondrial mediated apoptosis and modulating AMPK activation-mediated mitochondrial fission, thereby providing a rationale for future clinical applications and potential therapeutic strategy for MI/R injury. PMID:27869201

  17. 内陆湖盆低渗透大油田石油富集规律与勘探技术%Exploration Technology and Petroleum Occurrence of Big Oilfield on Low Permeability in Inland Lake Basin

    Institute of Scientific and Technical Information of China (English)

    韩天佑; 田永强; 李慧; 李士祥

    2011-01-01

    鄂尔多斯地区中生代为典型的内陆坳陷型湖盆,河流-湖泊三角洲相碎屑岩沉积发育,湖相泥岩有机质丰富、砂岩储层大面积展布、储盖组合有利,是发现大型油田的有利盆地。但是,这种低渗透岩性油藏隐蔽性强、储集物性差、非均质性强、油水关系复杂,勘探难度大。近年来,针对内陆湖盆的地质特点和低渗透岩性油藏的勘探难点,通过多学科联合攻关,快速探明了以姬塬为代表的内陆湖盆低渗透大油田,取得了一系列地质认识的创新和勘探技术的新突破:综合地质研究进一步明确了鄂尔多斯内陆坳陷湖盆烃源岩生烃能力强;多类型三角洲砂体发育,并首次构建了大型退覆式三角洲沉积模式,丰富了内陆坳陷型湖盆的沉积地质理论;率先提出了幕式排烃、多种输导体系并存是多层系复合成藏的重要条件的新认识。在勘探实践中,形成了黄土塬地表条件下岩性油藏地震勘探配套技术系列,丰富了地球物理勘探理论和技术;集成应用了高精度测井、核磁测井等先进测井技术,首次提出了低孔渗储层的双孔隙结构导电模型,提高了油层的测井识别精度;自主研发了独具特色的适应于低渗透、超低渗透油层的高效压裂增产技术。这些勘探技术的应用推动了低渗透油气藏勘探理论的发展。%The Mesozoic stratum of Ordos basin is the typical lake basin of inland depression.It developed a set of clastic sedimentary of river and lake delta. Organic matter of lacustrine mudstone is rich,sandstone reservoirs extensive spreading,and the combination of reservoirs and cap rocks are beneficial.It's the beneficial basin for discovery large oilfield.However,this low permeability lithologic reservoirs have the characteristics of strong concealment,poor reservoir physical properties,strong heterogeneity,complex of oil-water contact,great difficulte for exploration

  18. Developing an Activity and Absorption-based Quality Control Platform for Chinese Traditional Medicine: Application to Zeng-Sheng-Ping

    Science.gov (United States)

    Yin, Taijun; Yang, Guanyi; Ma, Yong; Xu, Beibei; Hu, Ming; You, Ming; Gao, Song

    2015-01-01

    Ethnopharmacological relevance Zeng-Sheng-Ping (ZSP) is a marketed Chinese traditional medicine used for cancer prevention. Aim of the study Currently, for the quality control of Chinese traditional medicines, marker compounds are not selected based on bioactivities and pharmaceutical behaviors in most of the cases. Therefore, even if the “quality” of the medicine is controlled, the pharmacological effect could still be inconsistent. The aim of this study is to establish an activity and absorption-based platform to select marker compound(s) for the quality control of Chinese traditional medicines. Materials and methods We used ZSP as a reference Chinese traditional medicine to establish the platform. Activity guided fractionation approach was used to purify the major components from ZSP. NMR and MS spectra were used to elucidate the structure of the isolated compounds. MTT assay against oral carcinoma cell line (SCC2095) was performed to evaluate the activities. UPLC-MS/MS was used to quantify the pure compounds in ZSP and the active fraction. The permeabilities of the identified compounds were evaluated in the Caco-2 cell culture model. The intracellular accumulation of the isolated compounds was evaluated in the SCC2095 cells. Results The major compounds were identified from ZSP. The contents, anti-proliferation activities, permeabilities, and intracellular accumulations of these compounds were also evaluated. The structure of these purified compounds were identified by comparing the NMR and MS data with those of references as rutaevine (1), limonin (2) , evodol (3), obacunone (4), fraxinellone (5), dictamnine (6), maackiain (7), trifolirhizin (8), and matrine (9). The IC50 of compounds 5, 6, and 7 against SCC2095 cells were significantly lower than that of ZSP. The uptake permeability of compounds 5, 6, and 7 were 2.58 ± 0. 3 × 10−5, 4.33 ± 0.5 × 10−5, and 4.27 ± 0.8 × 10−5 respectively in the Caco-2 cell culture model. The intracellular

  19. Pilot Test for Oil Displacement with Combined Heat Carrier in HYS Oilfield%HYS 油田复合热载体驱油先导试验

    Institute of Scientific and Technical Information of China (English)

    翁小红; 马哲斌; 肖见; 刘江林; 侯庆宇

    2012-01-01

    HYS油田是国内最早进行热采的超浅层稠油区块,但是常规热采技术开发超浅层稠油难度大,为提高原油采收率,开展了复合热载体试验.第一批试验井主要依靠复合热载体,辅以少量蒸汽,驱油效果差;第二批试验井综合应用了复合热载体、蒸汽和发泡剂,驱油效果较好.试验结果表明,复合热载体主要为非凝结气体,本身焓值低,需要蒸汽辅助方能起作用.组合注汽可以防止汽窜、形成规模效应,是复合热载体的最佳注汽方式,并在HYS油田克上组油藏取得了比较好的驱油效果.先导试验结果表明,复合热载体技术可以改善超浅层稠油驱油效果,提高采收率,可进行现场应用试验.%HYS Oilfield is the first area of thermal recovery for heavy oil in ultra-shallow formations in China,but it is hard to develop heavy oil from ultra-shallow reservoir by conventional thermal recovery. In order to enhance recovery, experiment of combined thermal carriers has been carried out. The first sets of tests are made by combined heat carrier and a small amount of steam,the effect is poor in displacement of oil;the second sets of tests are made by combined heat carrier, steam and foamer,with better results ob-tained. The testing results show that combined thermal carrier is mainly non-condensed gas, with low en-thalpy value,requiring the assistance of steam to work well. Combined steam injection can prevent steam channeling,and produce scale effect,that is the best method of steam injection by combined heat carrier, and has obtained good effect in T2k formation of HYS Oilfield. Combined heat carrier technique can im-prove heavy oil displacement effect in ultra-shallow formations,enhance oil recovery,and provide guidance for its application in the future.

  20. Transport of reservoir fines

    DEFF Research Database (Denmark)

    Yuan, Hao; Shapiro, Alexander; Stenby, Erling Halfdan

    Modeling transport of reservoir fines is of great importance for evaluating the damage of production wells and infectivity decline. The conventional methodology accounts for neither the formation heterogeneity around the wells nor the reservoir fines’ heterogeneity. We have developed an integral...... dispersion equation in modeling the transport and the deposition of reservoir fines. It successfully predicts the unsymmetrical concentration profiles and the hyperexponential deposition in experiments....

  1. Effectiveness of Traditional Chinese Medicine Compound JieDuTongLuoShengJin Granules Treatment in Primary Sjögren’s Syndrome: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial

    Directory of Open Access Journals (Sweden)

    Ben Li

    2017-01-01

    Full Text Available Objective. To evaluate the clinical therapeutic efficacy and safety of JieDuTongLuoShengJin granules + HCQ in patients with pSS. Methods. 40 patients with low-activity-level pSS and without visceral involvement participated in this study and were randomized to receive either JieDuTongLuoShengJin granules with HCQ or placebo with HCQ. Patients and investigators were blinded to treatment allocation. The primary endpoint was week 12 ESSPRI score, while secondary endpoints included ESSDAI, salivary and lacrimal gland function, and some laboratory variables. Safety-related data were also assessed. Results. Comparing with the placebo group, the treatment group experienced statistically significant improvement in the mean change from baseline for the primary endpoint of ESSPRI score and also in PGA. Moreover, in comparison with baseline values, the treatment group had significantly improved ESSDAI score, unstimulated saliva flow rate, and several laboratory variables. However, upon comparison of the two groups, there were no significant differences for them. The incidence of AEs was 10.0%, one in treatment group and three in placebo group. Conclusion. Treatment with a combination of JieDuTongLuoShengJin granules with HCQ is effective in improving patients’ subjective symptoms and some objective indicators of pSS. These results indicate that JieDuTongLuoShengJin is promising as a safe and effective treatment of pSS.

  2. Integrated reservoir interpretation

    Energy Technology Data Exchange (ETDEWEB)

    Caamano, Ed; Dickerman, Ken; Thornton, Mick (Conoco Indonesia Inc., Jakarta (Indonesia)); Corbett, Chip; Douglas, David; Schultz, Phil (GeoQuest, Houston, TX (United States)); Gir, Roopa; Nicholson, Barry (GeoQuest, Jakarta (Indonesia)); Martono, Dwi; Padmono, Joko; Novias; Kiagus; Suroso, Sigit (Pertamina Sumbagut, Brandan, North Sumatra (Indonesia)); Mathieu, Gilles (Etudes et Productions Schlumberger, Clamart (France)); Yan, Zhao (China National Petroleum Company, Beijing (China))

    1994-07-01

    Improved reservoir management often relies on linking a variety of application software that helps geoscientists handle, visualize and interpret massive amounts of diverse data. The goal is to obtain the best possible reservoir model so its behavior can be understood and optimized. But diverse application software creates specialty niches and discourages integrated interpretation. A description is given of a new reservoir management package that covers all required functionalities and encourages the geologist, geophysicist, petrophysicist and reservoir engineer to embrace the integrated approach. Case studies are included in the article. 21 figs., 13 refs.

  3. 中高温油藏内源微生物厌氧激活%Anaerobic activation of indigenous microorganism in the middle and high temperature reservoir

    Institute of Scientific and Technical Information of China (English)

    冯云; 段传慧; 林军章; 孙刚正

    2016-01-01

    In order to define the characteristics of gas production by indigenous microorganism under anaerobic activation,11 blocks of middle and high temperature reservoir were selected to research in the Shengli Oilfield,which temperature ranges were 55 to 65 ℃,65 to 79 ℃ and 79 to 95 ℃. Indigenous microorganism could be activated to produce gas below 79℃ under simulated reservoir condition,whereas no significant methane gas was produced when temperature was above 79 ℃. The maximum methane production rate was up to 1 500 μmol/( g·d ) when H2/CO2 was used as carbon source, significantly higher than those of sodium acetate and starch. Furthermore,Methanobacterium was activated to become the dominant microflora under anaerobic condition in Zhengli Zhuang Zhengnan block,which favored to produce methane gas in the reservoir.Before anaerobic activation,the dominant bacteria were Pseudomonas in the samples and the dominant bacteria were changed under different activation conditions.H2/CO2 and starch can activate Thermotoga, whereas sodium acetate mainly activated Deferribacter in oil wells. In addition,the dominant flora of different oil wells tended to be identical in the block, but there were significant differences in the dominant microflora between oil well and water well. Our findings on the anaerobic activation of the internal microorganism could serve reference for further enhancing the effect of microbial oil recovery.%为了明确中高温油藏内源微生物厌氧激活产气的特点,在胜利油田选取了11个区块开展产气研究,温度范围分别为55~65℃、65~79℃、79~95℃。在模拟油藏条件下厌氧激活发现,低于79℃时,油藏内源微生物普遍能被激活并代谢产气;而高于79℃时,无明显甲烷气产生。利用不同碳源激活后发现,H2/CO2为碳源时,最大产甲烷速率可达1500μmol/( g·d),显著高于乙酸钠和淀粉,这表明中高温油藏内产甲烷古菌以氢

  4. Kinetics of oil-cracking for different types of marine oils from Tahe Oilfield, Tarim Basin, NW China

    Directory of Open Access Journals (Sweden)

    Anlai Ma

    2016-02-01

    Full Text Available The C1–C5 gas and carbon isotope ratios generated during the cracking of heavy, normal and high-waxy marine oils from Tahe Oilfield, Tarim Basin, NW China, using a closed-gold tube system under high pressure were presented. The three types of oil tested resulted in a similar gas-generation process. The C2–C5 range initially increased its yield with the application of pyrolysis temperature and thereafter decreased, while the C1 yield increased with the same application. High-waxy oil had the highest C1–C5 yield of 510 mg/goil, whereas heavy oil had the lowest C1–C5 yield of 316 mg/goil. The δ13C1 value was low at first, but gradually became higher as the pyrolysis temperature increased. However, the δ13C2 and δ13C3 values gradually became higher when the temperature was greater than 420 °C. The kinetic parameters of the C1–C5 gas generation for the different types of marine oils were then calculated using KINETIC software. This calculation resulted in a frequency factor of about 1.78 × 1014 s−1, while the distribution of the activation energy of the C1–C5 gas mass generated was relatively narrow with a range from 56 to 66 kcal/mol. Among the three types of oil tested, heavy oil had the widest activation energy distribution and the lowest major frequency of activation energy. The maximum temperature at which oil could be preserved as a separate oil phase varied from about 178 °C at a slow geological heating rate to 206 °C at a fast geological heating rate. This result is based on the kinetic parameters determined and in combination with the fractional conversion (C of oil to gas. Testing conducted at the volatile Middle Cambrian reservoir of well Zhongshen 1 in the Tazhong Uplift strongly supported this conclusion.

  5. Division of high resolution sequence stratigraphy units with wavelet transform of logs in Dagang Oilfield

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Division of high resolution sequence stratigraphy units based on wavelet transform of logging data is found to be good at identifying subtle cycles of geological process in Kongnan area of Dagang Oilfield. The analysis of multi-scales gyre of formation with 1-D continuous Dmey wavelet transform of log curve (GR) and 1-D discrete Daubechies wavelet transform of log curve (Rt) all make the division of sequence interfaces more objective and precise, which avoids the artificial influence with core analysis and the uncertainty with seismic data and core analysis.

  6. The microbiology of drill mud cuttings from a new off-shore oilfield in Nigeria.

    Science.gov (United States)

    Nnubia, C; Okpokwasili, G C

    1993-01-01

    Drilling-fluid-utilising microorganisms present in drill mud cuttings collected from the Agbara oilfield were isolated on mineral salts agar plates. Thirty-two isolates were obtained, 26 of which were Gram-positive bacteria and six fungi. The isolates were identified as Bacillus sp. (10), Staphylococcus sp. (12), Micrococcus sp. (2), Corynebacterium sp. (1), Nocardia sp. (1), and Penicillium sp. (6). Screen tests indicated that 27 (84.4%) of the isolates did not grow with any of the drilling fluids One Bacillus and three Staphylococcus spp. were strong primary utilisers of the drilling fluids.

  7. 大庆油田聚合物驱分注工艺现状%Overview of separate injection technique for polymer flooding in Daqing oilfield

    Institute of Scientific and Technical Information of China (English)

    李海成

    2012-01-01

    Three separate injection technologies for different stages of development are developed in Daqing oilfield, including concentric separate-injection, eccentric separate injection, and separate-layer molecular injection. The concentric separate-injection technology controls injection rate of each layer by using concentric injection allocator which regulates injection pressure. The eccentric separate injection technology controls injection rate of each layer by using eccentric injection allocator to generate enough differential choke pressure to regulate injection pressure. The separate-layer molecular injection weight technology controls injection rate of each layer by using molecular weight regulator or pressure regulator chosen according to reservoir property. This paper described in-detail their process principles, technical parameters, application scale and their effects et al. According to the actual stages of polymer injection in the oil field, this paper presents the rational timing and principles of separate injection as well as the corresponding test cycles. In addition,the principles for selection of separate injection technologies are also proposed according to the types of pay zones. Short clamping distance of the polymer injection technology and efficient measurement technology of separate injection wells in the polymer flood oilfield are the key research direction in Daqing oilfield.%根据大庆油田不同开发阶段的需要,形成了3种成熟配套的聚合物驱分注工艺技术.同心分注技术,其井下管柱采用单管同心分注形式,通过同心配注器对分层注入压力的调节,控制各个层段的注入量.偏心分注工艺,其井下管柱采用单管偏心分注形式,通过偏心配注器形成足够的节流压差,调节注入压力,控制限制层注入量.分层分质注入工艺,其井下管柱采用单管偏心形式,通过分子量调节器或压力调节器,控制注入层段的分子量或注

  8. 油藏立体开发探讨%Discussions on tridimensional reservoir development models

    Institute of Scientific and Technical Information of China (English)

    任芳祥

    2012-01-01

    In order to realize the effective development of buried hill light oil reservoirs, mid-deep massive heavy oil reservoirs with interbeds, and ultra-deep massive heavy oil reservoirs in the Liaohe Oilfield, three tridimensional development models are established: superposition of horizontal wells in multi-intervals and multi-layers, steam assisted plane displacement (vertical -wells) with combination of vertical gravity drainage (horizontal wells), and steam assisted liquor drainage by two superposed horizontal wells and production by vertical wells. The development mechanisms for these three tridimensional development models have been studied by field test, physical simulation and numerical simulation. The tridimensional development mechanisms of buried hill light oil reservoirs are uniform compaction action, vertical gravity action and joint supply action. The tridimensional development mechanisms of mid-deep massive heavy oil reservoir with interbeds are gravity drainage and steam flooding, and the tridimensional development mechanisms of ultra-deep massive heavy oil reservoir are gravity water drainage, reduction of heat losses and enhancement of production injection ratio. The field tests in the light oil reservoir of the Xinggu buried hill, raid-deep massive heavy oil reservoir in Xing VI oil layer of Block Du 84 and ultra-deep massive heavy oil reservoir of Block Wa 59 in the Liaohe Oilfield showed that tridimensional development can significantly improve crude oil production, and realize efficient development of oilfield.%为有效开发辽河油田潜山稀油油藏.隔夹层发育的中深层块状稠油油藏及特深层块状稠油油藏,建立了多段多层水平井叠置、直井注汽平面驱替加水平井垂向重力泄油、叠置双水平井注汽排液加直井采油3种立体开发模型,采用现场测试、物理模拟、数值模拟等技术研究了3种立体开发方式的开发机理.潜山稀油油藏立体开发机理为分段均压作

  9. Reservoir Engineering Management Program

    Energy Technology Data Exchange (ETDEWEB)

    Howard, J.H.; Schwarz, W.J.

    1977-12-14

    The Reservoir Engineering Management Program being conducted at Lawrence Berkeley Laboratory includes two major tasks: 1) the continuation of support to geothermal reservoir engineering related work, started under the NSF-RANN program and transferred to ERDA at the time of its formation; 2) the development and subsequent implementation of a broad plan for support of research in topics related to the exploitation of geothermal reservoirs. This plan is now known as the GREMP plan. Both the NSF-RANN legacies and GREMP are in direct support of the DOE/DGE mission in general and the goals of the Resource and Technology/Resource Exploitation and Assessment Branch in particular. These goals are to determine the magnitude and distribution of geothermal resources and reduce risk in their exploitation through improved understanding of generically different reservoir types. These goals are to be accomplished by: 1) the creation of a large data base about geothermal reservoirs, 2) improved tools and methods for gathering data on geothermal reservoirs, and 3) modeling of reservoirs and utilization options. The NSF legacies are more research and training oriented, and the GREMP is geared primarily to the practical development of the geothermal reservoirs. 2 tabs., 3 figs.

  10. Dynamic reservoir well interaction

    NARCIS (Netherlands)

    Sturm, W.L.; Belfroid, S.P.C.; Wolfswinkel, O. van; Peters, M.C.A.M.; Verhelst, F.J.P.C.M.

    2004-01-01

    In order to develop smart well control systems for unstable oil wells, realistic modeling of the dynamics of the well is essential. Most dynamic well models use a semi-steady state inflow model to describe the inflow of oil and gas from the reservoir. On the other hand, reservoir models use steady s

  11. Geothermal reservoir engineering research

    Science.gov (United States)

    Ramey, H. J., Jr.; Kruger, P.; Brigham, W. E.; London, A. L.

    1974-01-01

    The Stanford University research program on the study of stimulation and reservoir engineering of geothermal resources commenced as an interdisciplinary program in September, 1972. The broad objectives of this program have been: (1) the development of experimental and computational data to evaluate the optimum performance of fracture-stimulated geothermal reservoirs; (2) the development of a geothermal reservoir model to evaluate important thermophysical, hydrodynamic, and chemical parameters based on fluid-energy-volume balances as part of standard reservoir engineering practice; and (3) the construction of a laboratory model of an explosion-produced chimney to obtain experimental data on the processes of in-place boiling, moving flash fronts, and two-phase flow in porous and fractured hydrothermal reservoirs.

  12. Modeling vapor dominated geothermal reservoirs

    Energy Technology Data Exchange (ETDEWEB)

    Marconcini, R.; McEdwards, D.; Neri, G.; Ruffilli, C.; Schroeder, R.; Weres, O.; Witherspoon, P.

    1977-09-12

    The unresolved questions with regard to vapor-dominated reservoir production and longevity are reviewed. The simulation of reservoir behavior and the LBL computer program are discussed. The geology of Serrazzano geothermal field and its reservoir simulation are described. (MHR)

  13. The Diagenesis Type and the Pore Structure Feature in Xiaermen Oilfields%下二门油田储层成岩作用类型及微观孔隙结构特征

    Institute of Scientific and Technical Information of China (English)

    谢俊; 孟宁宁; 张金亮; 姜建伟; 曾俊

    2012-01-01

    By means of the datums, such as ordinary thin slice and cast thin slice of the core hole and the data of scanning electronic microscope, the main diagenesis affecting the clastic rock reservoir in Xiaermen oilfield are compaction, cementation and denudation. The machine compact is widespread and the chemistry compact is rare for the compaction. The cementation are mainly carbonate cement (including the cementation of calcite and dolomite and ferroan calcite and ferroan dolomite) and clay mineral cement as kaolinite and chlorite. The denudation are mainly feldspar grains, a little of detritus corrode and carbonate cement corrode. The common reformation of the three diagenesis formed the pore structure feature which extensively distribute intergranular pore, innergranular pore and lingot pore in Xiaermen oilfield. According to the micro-pore structure characteristics, the authors combined with the distribution of sedimentary facies believe that, the favorable reservoir of Xiaermen oilfield developes in the underwater distributary channel and foredelta sand bar of braided delta front sub-facies. These new understandings provide a geological guide for adjustment and tapping potential of the oilfield.%通过14口取心井普通薄片、铸体薄片的镜下观察及扫描电镜等资料的研究,认为影响下二门油田碎屑岩储层的成岩作用主要有3种:压实、胶结和溶蚀.其中,压实作用以机械压实为主,化学压实少见;胶结作用主要有碳酸盐胶结(如方解石、白云石等)、黏土矿物胶结(如高岭石、绿泥石等);溶蚀作用主要有长石颗粒和少部分岩屑溶蚀、碳酸盐胶结物溶蚀.这3种成岩作用的共同改造形成了下二门油田以粒间孔、粒内溶孔和铸模孔为主的孔隙结构特征.根据微观孔隙结构特征,结合沉积相展布特点,认为下二门油田有利储层主要分布在辫状三角洲前缘亚相带水下分流河道和前缘砂坝等砂体.这些新认识为

  14. Sheng-Sheng:The Virtue of the Heaven-and-Earth and the Fulfillment of Human Being:The Cosmic Interpretation of Meaning in Confucianism and Taoism%“生生”:天地之德,人生之的--先秦儒、道思想中的意义世界通诠

    Institute of Scientific and Technical Information of China (English)

    于述胜

    2015-01-01

    The major tradition of Confucianism and Taoism systems in Chinese philosophical meaning world is centered on the integrative wholes explicable in three major terms:the Inseparable Unity of Heav-en and Man(天人一体,all man are at one with Heaven),Mutual Induction between Thing and Men(物我感应,and Creative Creativity (生生,Sheng-sheng).Creative Creativity,which means literally in Chinese to beget or to create,is the fundamental direction of the heaven-and-earth’s creativity and meanwhile consti-tutes the virtue and the fulfillment of life.It considers the inseparable Unity of Heaven and Man as the precondition for man’s coming into being and interaction as fundamental mechanism whereby man can en-lighten the prospect of his life.The internal cosmic meaning of Sheng-sheng theory is that Heaven and Man are inseparable and therefore “nature”and “obligation”should be one;individuals should foster their good virtue and learning for self cultivation.All living beings including humans derive their existence from Creative Creativity which is being achieved as the good and holds human beings under its own way into harmony,and by which the final destiny of the universal constancy and the fulfillment of life are achieved.%“一体”“感应”与“生生”,是构筑儒、道意义世界的三大关节。其中,“生生”既是天地运化的根本趋向,也是人生在世的意义之源。它以“天人一体”为生存论前提,以“物我感应”为根本运化机制。“生生”之论的内在价值义蕴是:天人不二,故“自”、“当”一体;修其天爵,学以为己;成己成物,致中蹈和;素位而行,乐天知命。生人之道,尽乎此矣!

  15. Clinical experience of ZHANG Sheng-sheng treating problematic spleen-stomach diseases with regulating liver and spleen%张声生教授运用调肝理脾法治疗疑难脾胃病的临床经验

    Institute of Scientific and Technical Information of China (English)

    周滔; 张声生

    2013-01-01

    调肝理脾法为中医治疗大法之一,属“和法”的范畴.调肝理脾主要是协调肝脾功能,包含了各种调肝、理脾治法及相互配伍应用.张声生教授认为疑难脾胃病与肝脾失调关系更为密切,临床常表现为各种肝脾相关证候.张声生教授通过辨析疑难脾胃病的病机特点,采用相应调肝理脾治法,如疏肝健脾法、泄肝扶脾法、补脾泄肝法、补脾养肝法、泄肝和中法、柔肝滋脾法、暖肝温脾法、理气化瘀法、清利湿热法等,往往能取得良好临床疗效.%Regulating liver and spleen, one of methods of treatment, belongs to reconciliation method in TCM. Regulating liver and spleen means coordinating the function of liver and spleen, including all kinds of regulating liver, spleen, and combining each other. Professor ZHANG Sheng-sheng considers problematic spleen-stomach diseases are associated with irregulation of the function of liver and spleen, and show syndromes of irregulation of the function of liver and spleen. According to the syndrome differentiation, professor ZHANG Sheng-sheng analyzes the pathogenesis of irregulation of liver and spleen function and treats problematic spleen-stomach diseases with regulating liver and spleen, such as soothing liver and fortifying spleen, restraining liver and fortifying spleen, strengthening spleen and restraining liver, strengthening spleen and liver, restraining liver and harmonizing spleen and stomach, emolliating liver and nourishing spleen, worming liver and spleen, soothing qi and blood stasis, clearing heat and eliminating damp, and so on.

  16. Classification evaluation of development effect of heavy- oil polymer flooding in offshore oilfield%海上油田普通稠油聚合物驱效果分级评价研究

    Institute of Scientific and Technical Information of China (English)

    陈民锋; 张贤松; 余振亭; 葛涛涛; 宋春涛

    2012-01-01

    According to development characteristic and development practice of typical polymer flooding reservoir in offshore oilfields, the polymer flooding evaluation index sets including evaluation index of displacement efficiency, precipi- tation efficiency and incremental oil effect were constructed. Considering influence of economic factors in investment and output process in polymer flooding, classification evaluation of development effect based on incremental oil per ton of poly- mer was proposed by investigating the relationship between economic limit of incremental oil per ton of polymer and crude oil price. And four evaluation criterions of the corresponding evaluation index of development effect were established. Oil- field application shows that the established method can run a comparatively comprehensive evaluation of polymer flooding in offshore oilfield and determine the development level of polymer flooding qualitatively - semi quantitatively. Thereby it can provide a certain guiding role for polymer flooding in offshore oilfields.%根据海上油田开发特点和典型聚合物驱油藏的开发实践,建立包括驱替效率、降水效果和增油效果评价指标等三方面的聚合物驱效果评价指标集;考虑油田在聚合物驱投入、产出过程中经济因素的影响,研究了经济极限吨聚增油量与原油价格的关系,提出以吨聚增油量为基础的效果分级评价方法,并建立相应的各个效果评价指标的四级评价标准。实际油田应用表明,建立的方法可以比较全面地评价海上油田聚合物驱的效果,定性半定量地确定聚合物驱的开发水平,对海上油田聚合物驱的开发具有一定的指导作用。

  17. Application of oil-field well log interpretation techniques to the Cerro Prieto Geothermal Field

    Energy Technology Data Exchange (ETDEWEB)

    Ershaghi, I.; Phillips, L.B.; Dougherty, E.L.; Handy, L.L.

    1979-10-01

    An example is presented of the application of oil-field techniques to the Cerro Prieto Field, Mexico. The lithology in this field (sand-shale lithology) is relatively similar to oil-field systems. The study was undertaken as a part of the first series of case studies supported by the Geothermal Log Interpretation Program (GLIP) of the US Department of Energy. The suites of logs for individual wells were far from complete. This was partly because of adverse borehole conditions but mostly because of unavailability of high-temperature tools. The most complete set of logs was a combination of Dual Induction Laterolog, Compensated Formation Density Gamma Ray, Compensated Neutron Log, and Saraband. Temperature data about the wells were sketchy, and the logs had been run under pre-cooled mud condition. A system of interpretation consisting of a combination of graphic and numerical studies was used to study the logs. From graphical studies, evidence of hydrothermal alteration may be established from the trend analysis of SP (self potential) and ILD (deep induction log). Furthermore, the cross plot techniques using data from density and neutron logs may help in establishing compaction as well as rock density profile with depth. In the numerical method, R/sub wa/ values from three different resistivity logs were computed and brought into agreement. From this approach, values of formation temperature and mud filtrate resistivity effective at the time of logging were established.

  18. Exporting expertise : Pajak Engineering sends its oilfield consultants to the farthest corners of the global patch

    Energy Technology Data Exchange (ETDEWEB)

    Byfield, M.

    2010-06-15

    This article discussed the activities of Pajak Engineering Ltd., a Canadian company that supplies wellsite supervisors, engineers, and engineering technologists to an international client base. The company has expertise in all phases of the oil and gas production cycle, and was recently involved in evacuating Chinese and Canadian oilfield personnel from a site in Chad that was in danger of being attacked by rebel forces. A Pajak consultant persuaded officials in Cameroon to allow the 115 Chinese oilfield workers to enter the country without conventional documents. The firm was founded in 1966, and was responsible for initiating Canada's first well control training course. The firm is now concentrating on deploying more personnel internationally in order to counter the cyclical nature of the Canadian oil industry. International producers acknowledge that Canada's harsh operating environment has resulted in significant advances in drilling management technology. Pajak consultants are instructed to avoid potentially dangerous operational shortcuts, and the firm has developed a reputation for having high professional standards. 3 figs.

  19. INVESTIGATION ON PRODUCTION CASING IN STEAM-INJECTION WELLS AND THE APPLICATION IN OILFIELD

    Institute of Scientific and Technical Information of China (English)

    YU Zhong-hong; WANG Li-yang; LIU Da-wei

    2009-01-01

    The casing damage is a serious problem when the steam-injection method is applied in the oilfields.In this work,the commercial software ANSYS is used to predict the thermal expansion and the thermal stresses of casings in steam-injection wells under different conditions,including steam channeling,well shut-in and cavitation in cement ring.The results indicate that nearly no temperature change occurs in oil-layer areas 4.0 m-6.0 m away from the casing center.When steam channeling appears,the maximum Mises stress of both the casing and the cement ring occurs on the interior wall.During the shut-in operation,while the maximum thermal expansion ocurs within the temperature-transition area,the maximum thermal stress will be on the interior wall of casing,exceeding the thermo-elastic yield ultimate stress of N80 steel.Besides,the thermal stress is much higher than the elastic strain limit if certain amounts of cavitations appear in the cement ring.Based on the results,some preventive measures against casing damage are proposed,which are verified through the successful application of TP120TH casings during well completion in Liao'he oilfield.

  20. Degradation and remediation of soils polluted with oil-field wastewater

    Science.gov (United States)

    Gabbasova, I. M.; Suleymanov, R. R.; Garipov, T. T.

    2013-02-01

    The changes in the properties of gray forest soils and leached chernozems under the impact of contamination with highly saline oil-field wastewater were studied in a model experiment. It was shown that the soil contamination results in the development of technogenic salinization and alkalization leading to worsening of the major soil properties. The salinization of the soils with oil-field wastewater transformed the soil exchange complex: the cation exchange capacity decreased, and the exchangeable sodium percentage increased to up to 25% of the CEC upon the wastewater infiltration and up to 60% of the CEC upon the continuous soil saturation with the wastewater independently of the soil type. The content of exchangeable magnesium also increased due to the phenomenon of super-equivalent exchange. Despite the saturation of the soil adsorption complex with sodium, no development of the soil alkalization took place in the presence of the high concentration of soluble salts. However, the soil alkalization was observed upon the soil washing from soluble salts. The gypsum application to the washed soils lowered the exchangeable sodium concentration to acceptable values and normalized the soil reaction. The gypsum application without the preliminary washing of the soils from soluble salts was of low efficiency; even after six months, the content of exchangeable sodium remained very high. The subsequent soil washing resulted in the removal of the soluble salts but did not affect the degree of the soil alkalization.

  1. [Petroleum hydrocarbon contamination and impact on soil characteristics from oilfield Momoge Wetland].

    Science.gov (United States)

    Wang, Xiao-yu; Feng, Jiang; Wang, Jing

    2009-08-15

    Momoge Wetland is an important international wetland. Crude oil exploration and production have been the largest anthropogenic factor contributing to the degradation of Momoge Wetland, China. To study the effects of crude oil residuals on wetland soils, the total petroleum hydrocarbon (TPH), total organic carbon (TOC), total nitrogen (TN) and total phosphorus (TP) were examined, as well as for pH and electricity conductivity (EC) from oilfield and uncontaminated area in Momoge Wetland. All contaminated areas had significantly higher (p contamination area with values ranging from 16,885 mg x kg(-1) to 31,230 mg x kg(-1). There was a significantly positive correlation between TOC and TPH contents in oilfield(r = 0.88, p Contaminated sites also exhibited significantly higher (p contamination also resulted the increase of the EC, however the impact of TPH on EC were not significant(p > 0.05). Collectively, petroleum hydrocarbon pollution has caused some major changes in soil properties in Momoge Wetland.

  2. 油田电网的谐波治理%Oilfield power grid harmonic control

    Institute of Scientific and Technical Information of China (English)

    刘保迎

    2012-01-01

    在油田生产中,主要生产工艺由各种机泵完成,用电量占油田总用电量的80%以上.为降低能耗,目前油田各类机泵广泛应用调速变频器.但在降低能耗的同时产生了大量谐波,造成电网二次污染,常导致继电保护误动作、电气设备绝缘击穿、电力计量仪表误差增大等问题.通过谐波治理可以清洁电网,提高电能质量,降低无功损耗,具有较好的经济效益.%In oilfield production, the main production processes are used in all kinds of machine pump to complete, electricity accounts for the total consumption of more than 80%. In order to reduce the energy consumption, currently, speed control inverter is wildly used as various types of pumps in oilfields. In the meantime, reducing energy consumption causes a large number of harmonics and power grid two pollution, often leads protective relaying misoperation, electrical equipment insulation breakdown, power meter error increases. Harmonic control can clean power grid, improve power quality, reduce reactive loss, and has good economic benefit.

  3. Exploration Strategies for Complex Fault Block Reservoirs in the Subei Basin

    Institute of Scientific and Technical Information of China (English)

    Liu Xiaoping; Yang Xiaolan; Liu Yurui

    2007-01-01

    The geological background of the Subei basin is that of small relief subsidence,low geothermal gradient,multi-sedimentary hiatuses,intense reconstruction of the basin,frequent magmatic activity,and a unique combination of source rock and reservoir. This geological background resulted in characteristics such as many small fault blocks,multiple oil-bearing formations,scattered oil distribution,mini- to small-sized reservoirs,and difficulties in exploration. Aimed at such characteristics,an effective exploration strategy was adopted,and the oil reserves,production and economic benefits of the Jiangsu oilfield were significantly increased. This exploration strategy included understanding the hydrocarbon generation mechanism of source rocks,progressive evaluation of oil resources,comprehensive research on the faulted systems,the distribution of oil reservoirs and their controlling factors. The techniques used included integration of acquisition,processing and interpretation with 3-D seismics as the core technology,trap description and evaluation,directional drilling and cluster drilling,integration of cuttings logging,gas chromatographic logging and geochemical logging,and integration of early reservoir description and progressive exploration and development. This strategy could be guidance for other complex fault blocks.

  4. Salt dissolution in oil and gas test holes in central Kansas. Part III. Salt dissolution oil and gas test holes in the Chase-Silica Oilfield, Barton and Rice Counties, central Kansas

    Energy Technology Data Exchange (ETDEWEB)

    Walters, R.F.

    1975-06-01

    In the 135.3 square mile area of the Chase-Silica Oilfield, Barton and Rice Counties, Kansas, all of the 4,845 oil and gas test holes drilled completely through the Hutchinson Salt Member of the Permian Wellington Formation encountered at depths near 900 feet on the east to near 1000 feet on the west. No salt dissolution takes place after drilling ceases in either cased oil wells or dry holes, however plugged or if plugged at all, because fresh water aquifers in Quaternary and Cretaceous are sealed off by surface casing permanently cemented in place and plugged internally. Exceptions to this statement are three holes where excessive post-drilling salt dissolution caused slow surface subsidence. In the Panning No. 11-A which drilled 90 feet of alluvial sand and gravel, subsidence was followed by 12 hours of sudden dramatic collapse during which the cone shaped hole swallowed a 500-barrel redwood tank, four large concrete rig corners, and all evidence of 190 feet of 10-3/4 inch surface casing cement in place, leaving a circular lake 300 feet in diameter which is still 64 feet deep sixteen years later. These three subsidence areas, studied in detail, involve salt water disposal (SWD) wells moving large volumes (100+ barrels water per hour or 70+ gallons per minute) of corrosive brine, undersaturated as to chlorides, into an excellent outlet reservoir, the Arbuckle dolomite, permitting brine flow across the salt face through casing leaks caused by corrosion. The head differential of about 800 feet plus the gravity drop to 3500 feet provided a tremendous energy input. The 694 remaining oil wells in this 260 million barrel oilfield are nearing depletion; they average only 4.68 barrels of oil per day per well (BOPDPW). With the holes properly plugged as now required under state supervision, it is concluded that no additional areas of surface subsidence will form.

  5. METHOD TO ENHANCE THE INTERPRETATION PRECISION FOR THE WATERED-OUT LAYERS IN LAMADIAN OILFIELD%提高喇嘛甸油田水淹层解释精度方法

    Institute of Scientific and Technical Information of China (English)

    杜建涛

    2012-01-01

    喇嘛甸油田已进入特高含水开发阶段.通过分析该油田近3年的取心井水洗资料和新钻井测井资料,确定了水淹层解释精度偏低的影响因素、油层水淹后测井曲线响应特征及其匹配关系.在此基础上,根据不同区域、储层动用状况对水淹层解释精度进行了定性校正,建立了水淹层解释测井曲线重构方法和深侧向电阻率曲线恢复法,使水淹层解释精度达到81.5%.研究成果为喇嘛甸油田特高含水期剩余油挖潜提供了可靠依据.%Lamadian Oilfield has reached the development stage of extra-high water cut, With the help of the data analyses for the watered coring wells and the logs from newly-drilled wells, the influencing factors on the above precision , the response characteristics of the well logging curves of these watered-out oil layers and their matching relations are determined. On the basis of the above, according to the developed status of different regions and reservoirs, the qualitative correction is conducted for the interpretation precision and moreover the reconstructed method for the well logging curves of the watered-out layers and the build-up approach for deep laterologs resistance curves are established, thus the precision has reached 81. 5%. The study results have provided a reliable evidences for the remained oil tapping at extra-high water cut stage of Lamadian Oilfield.

  6. 应用综合配套防砂工艺实施文明寨油田出砂治理%Administer the Sand-production in Wenmingzhai Oilfield Applying for Comprehensive Sand Prevention Technology

    Institute of Scientific and Technical Information of China (English)

    李由峰; 李辉; 刘国华; 侯国胜; 孟志芳

    2012-01-01

    文明寨油田断块多且破碎,储层非均质严重,油层埋藏浅,胶结疏松,开发过程中出砂严重。针对日趋严重的出砂井情况,2010年开始应用综合配套防砂工艺技术对全油田的出砂井进行综合治理,逐步形成了以"人防、技防"相结合的立体式防砂思路。经过实施,大大降低了因出砂造成的躺井率,减少了职工劳动强度,使文明寨油田出砂问题得到了有效治理。%Wenmingzhai oilfield, where there are many broken fault blocks, and the reservoir is heterogeneity, no deep, cemented loosely, product sand seriously during the development. Aimed at the increasingly serious sand production conditions, we began to manage it fully using comprehensive sand prevention technology on all sand-production wells in it from 2010. As a result, there gradually set up a three-dimensional type of sand-proof, which combined the civil defense with the anti-technology. Put it to practice, greatly reduced the rate of well-no-working due to sand production, reduced the labor intensity of workers, the problem of sand-production in Wenmingzhai oilfield has been broken under control effectively.

  7. 渭北油田高水垂比水平井钻井设计与应用%The Design and Application of Horizontal Well Drilling with High Dep/TVD Ratio in the Weibei Oilfield

    Institute of Scientific and Technical Information of China (English)

    闫吉曾

    2015-01-01

    To solve drilling difficulties in the Chang‐3 Reservoir of the Weibei Oilfield that displayed high friction and difficult well trajectory control caused by shallow burial depth and high ratio of horizontal departure and true vertical depth(Dep/TVD) ,the research on horizontal drilling technology with high ratio of Dep/TVD in shallow reservoir was conducted .Based on an analysis of the primary drilling technology difficulties in the oilfield ,a numerical simulation for friction and torque was made in different hole sizes . Three spudding well sections were adopted ,and φ215.9 mm drill bits were used to drill the last horizontal section .In order to ensure accurate landing and targeting ,a double build hole profile was adopted according to the geological characteristics of the Chang‐3 Reservoir .According to characteristics and drilling require‐ments of the formations drilled in the three sections ,the first section adopted a tapered bottomhole assem‐bly ,the second and the third spudding sections adopted inverted BHA that the heavy weight drill pipe was applied in the hole section with a deviation angle of 45° to 60° ,a potassium ammonium‐based polymer drill‐ing fluid was used and the fluid loss less than 5 mL in the horizontal section .To reduce drilling cost ,the existing drilling rig ZJ30 without a top drive was selected .Field practice shows that ,the conventional drill‐ing equipment and drilling technology mentioned above can be used to solve the drilling difficulties of shal‐low horizontal wells ,so as to achieve the effective the development for the Chang‐3 Reservoir of the Weibei Oilfield .%为解决渭北油田长3储层埋深浅、水平井水垂比高带来的摩阻大、井眼轨迹控制难等问题,开展了浅层高水垂比水平井钻井设计研究。在分析主要钻井技术难点的基础上,对不同尺寸井眼的摩阻和扭矩进行了数值模拟,将待钻井设计为三开井身结

  8. Experience of ZOU Ju-sheng in Treatment of Dry Eye%邹菊生老师治疗干眼症经验总结

    Institute of Scientific and Technical Information of China (English)

    董志国; 张殷建

    2011-01-01

    ZOU Ju-sheng teacher applied modern anatomy and traditional organs Classification to explore the etiology and pathogenesis of dry eye,and use of ophthalmic XuanFu theory, combined with LunZang relevant theories,using propaganda through the eye of the law of XuanFu to cure disease,available better effect.%邹菊生老师运用现代解剖与传统脏腑分属方式探寻干眼症的病因病机,并运用眼科玄府理论,结合轮脏相关学说,采用宣通眼部玄府之法论治本病,获得了较好疗效.

  9. Study on Quality Standard of ShengXue Granules%升血颗粒质量标准的研究

    Institute of Scientific and Technical Information of China (English)

    戴晓雁; 王玉洁; 魏学兵

    2013-01-01

    目的:建立升血颗粒的质量标准。方法:采用薄层色谱(TLC)法对处方中山茱萸、黄芪、丹参、麦门冬进行定性鉴别;采用高效液相色谱法对制剂中马钱苷的含量进行定量测定。结果:TLC斑点清晰、分离度好,阴性对照无干扰;马钱苷进样量在0.0752~0.451μg/mL范围内与峰面积呈良好线性关系(r=0.9983),平均加样回收率为96.2%,RSD=2.3%(n=6)。结论:所建立的标准可用于升血颗粒的质量控制。%Objective: To establish quality standard for ShengXue granules. Method: The herbs including ShanZhuYu (Fructus Corni), HuangQi (radix astragali), DanShen (Salvia miltiorrhiza) and MaiMengDong (Radix Ophiopogonis) in the prescription were identified qualitatively through thin-layer chromatography (TLC); loganin contents were determined qualitatively by high performance liquid chromatography (HPLC). Result:TCL spotting was clear with high resolution and the blank test showed no interference;the sample size of loganin showed better linear relationship in the range of 0.0752 to 0.451 μg/mL and peak area (r=0.998 3), average recovery rate was 96.2%, RSD=2.3%(n=6). Conclusion:The established standard could be used for quality control of ShengXue gran-ules.

  10. Clean Fracturing Fluid Technology in Oil Field Application of Reservoir Reconstruction%浅谈清洁压裂液技术在油田储层改造中的运用

    Institute of Scientific and Technical Information of China (English)

    李小刚; 刘荣恒

    2015-01-01

    压裂液是压裂技术的必备条件,其中,清洁的压裂液能够让油田产出更加清洁的石油,提高了产油的效率,所以,为了提高单井产量,利用压裂技术对油田储层进行改造就是油田企业的重要任务。%Fracturing fluid is the essential condition of fracturing technology,among them,the more clean fracturing fluid can let oilfields clean oil,improve the efficiency of oil production,so,in order to improve the single well production,using the fracturing technology to modify oil reservoir is an important task of oilfield enterprises.

  11. Reservoir characterization of Pennsylvanian sandstone reservoirs. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Kelkar, M.

    1995-02-01

    This final report summarizes the progress during the three years of a project on Reservoir Characterization of Pennsylvanian Sandstone Reservoirs. The report is divided into three sections: (i) reservoir description; (ii) scale-up procedures; (iii) outcrop investigation. The first section describes the methods by which a reservoir can be described in three dimensions. The next step in reservoir description is to scale up reservoir properties for flow simulation. The second section addresses the issue of scale-up of reservoir properties once the spatial descriptions of properties are created. The last section describes the investigation of an outcrop.

  12. The Early Memory,Hometown Feeling,Subjectivity Growth of College Students Enrolled in 1978---Review on Hou Qingling's Jiao Bu Sheng Sheng%78级的早期记忆、原乡情愫与主体性成长--候清麟《脚步声声》文本解读

    Institute of Scientific and Technical Information of China (English)

    李佳龙; 郑坚

    2014-01-01

    侯清麟《脚步声声》是一本具有自传体色彩的长篇小说,作者用纪实的手法、农家子弟的主观视角,还原了1978年高考恢复前后中国乡村社会的时代特征;以“青春记忆”为叙事脉络,完成了对角色主体性成长的描写与心路历程的刻画,生动呈现了78级大学生这一特殊群体的早期记忆。%Hou Qingling’s works Jiao Bu Sheng Sheng is a long novel with autobiography features.The writer’s documentary literary form and the plain subjective views from the husbandman restored the characteristics of China's rural areas in 1978 when the policy of college entrance examination resumed.Taking “the memories of youth”as the main thread of narrative,the author completed the depiction of the protagonist's journey which lead to his maturity and inward process which vividly presented the early memory of one generation who own the privilege to access university.

  13. Application of ATP measurements to the microbiological evaluation of a petroleum reservoir

    Energy Technology Data Exchange (ETDEWEB)

    Jones, P.M.

    1981-06-01

    The objective of the work reported in this document was to determine whether the bioluminescent luciferin/luciferase based adenosine triphosphate (ATP) assay could be used as a rapid field tests for determining the presence and numbers of microorganisms in oil field fluids. The ATP-photometric technique employed is based on the ATP-mediated bioluminescent oxidation of firefly luciferin. Light production is stoichiometrically related to ATP concentration; ATP concentration is related to numbers of living organisms present in a sample. Samples used in this study comprised reservoir fluids collected from several Southern California oilfields. Based on experimental evidence, it was concluded that the ATP assay could be profitably applied to Microbially Enhanced Oil Recovery (MEOR) process monitoring and control. The theoretical basis for the assay, field-usage methodologies, and fundamentals of data interpretation are presented to make the document usable as a field manual.

  14. Prediction of Interbeds Intercalated into Complex Heterogeneous Reservoirs at a High Water Cut Stage

    Institute of Scientific and Technical Information of China (English)

    Hou Jiagen

    2007-01-01

    The occurrence of interbeds in thick oil formations is one of the main reasons that cause the difference of remaining oil distribution. A quantitative method for predicting interbeds was proposed and the sedimentary origin and division criterion were demonstrated. The distribution of interbeds in different types of sedimentary sand bodies were predicted and analyzed by combining the theory of sedimentology and reservoir bed architectural-element analysis. The interbeds in a single well were recognized from high resolution well logs, and inter-well interbeds were predicted by using the methods of cyclothem correlation, physical properties truncation, and conditional simulation. Finally a 3-D model of interbed was built. Application to the Gudao Oilfield was successful.

  15. 杨19油藏东部初期注水开发效果分析%Analyses on the Effect of Early-Stage Water-flood Development in the East of Yang 19 Oil Reservoir

    Institute of Scientific and Technical Information of China (English)

    郭永康; 王辉; 郭春竹; 孔鹏

    2012-01-01

    The east area of Yan 9 reservoir in Yang19 block in Sui Jing oilfield is the lithology-tectonic oil reservoir based on the structure,with characteristics of shallow bury,thick layer of sand,single rock,and the limited water at the edge of bottom.At the early stage,natural energy was used in the development,but the energy of formation dropped rapidly.In order to realize the stable and high production of oilfield,and enhance the final oil recovery of oilfields,water-flooding development for oil reservoir has been carried out since Sept.2009.With the process being explored continuously and the precise water injection production being adjusted constantly,the better effect has been achieved now.Meanwhile,some experiences are summarized in the adjustment,which provides theoretical basis for western oil reservoir development.%绥靖油田杨19区块延9油藏东部具有埋藏浅,砂层厚,岩性单一,边底水有限的特征,是以构造为主的岩性—构造油藏。前期利用自然能量开发,地层能量下降迅速,为了实现油田稳产、高产,提高油田最终采收率,自2009年9月起对油藏进行注水开发,开发过程不断探索、不断精细注采调整,目前已取得良好效果,并在调整过程总结了一些经验,对西部油藏开发提供了理论上的依据。

  16. Analysis of plugging technology in Mabei-1 Oilfield%马北一号油田封堵工艺实施及效果分析

    Institute of Scientific and Technical Information of China (English)

    陶磊

    2015-01-01

    本文介绍了油田机械堵水工艺技术的发展和应用情况,针对马北南区两口生产井机械堵水作业后进行了分析。%The development of mechanical water plugging technology and application in Oilfield are introduced in this paper citing prac tices in two production wells in south area,Mabei Oilfield.

  17. Effects of untreated and treated oilfield-produced water on seed germination, seedling development, and biomass production of sunflower (Helianthus annuus L.).

    Science.gov (United States)

    da Costa Marques, Mônica Regina; de Souza, Paulo Sérgio Alves; Rigo, Michelle Machado; Cerqueira, Alexandre Andrade; de Paiva, Julieta L; Merçon, Fábio; Perez, Daniel Vidal

    2015-10-01

    This study aims to evaluate possible toxic effects of oil and other contaminants from oilfield-produced water from oil exploration and production, on seed germination, and seedling development of sunflower (Helianthus annuus L.). In comparison, as treated by electroflocculation, oilfield-produced water, with lower oil and organic matter content, was also used. Electroflocculation treatment of oilfield-produced water achieved significant removals of chemical oxygen demand (COD) (94 %), oil and grease (O&G) (96 %), color (97 %), and turbidity (99 %). Different O&G, COD, and salt levels of untreated and treated oilfield-produced water did not influence germination process and seedling biomass production. Normal seedlings percentage and vigor tended to decrease more intensely in O&G and COD levels, higher than 337.5 mg L(-1) and 1321 mg O2 L(-1), respectively, using untreated oilfield-produced water. These results indicate that this industrial effluent must be treated, in order to not affect adversely seedling development. This way, electroflocculation treatment appears as an interesting alternative to removing oil and soluble organic matter in excess from oilfield-produced water improving sunflower's seedling development and providing a friendly environmental destination for this wastewater, reducing its potential to harm water resources, soil, and biota.

  18. Investigation on Touching Sea Bottom by a FPSO in Bohai Oilfield with Shallow Water

    Institute of Scientific and Technical Information of China (English)

    LI Xin; YANG Jianmin; FAN Mo

    2005-01-01

    As one of the key safety problems, the motion performance and touching sea bottom of a FPSO are paid much attention by the ocean oil companies when the FPSO is exposed to survival storms in the shallow-water working areas. In this paper, timedomain numerical simulations are carried out on a 160 kDWT FPSO with a Yoke mooting system moored in the BZ25-1 oilfield with a water depth of 16.7m. The results are compared with those of the corresponding model tests. Good agreement shows that the time-domain simulations can be used to predict the performance of the FPSO in shallow-water reasonably. It is found that the touch of seabed by a fully loaded FPSO occurred few times under survival storm conditions. Therefore, the FPSO should be less loaded than that in the fully loaded condition under the survival storms.

  19. Experimental investigation of Daqing Oilfield mudstone’s creep characteristic under different water contents

    Institute of Scientific and Technical Information of China (English)

    黄小兰; 刘建军; 杨春和; 陈剑文

    2008-01-01

    In order to analyze mechanism of casing damage,the uniaxial compression experiment and creep experiment of interbedded mudstone samples from Sanan development area of Daqing Oilfield under different water contents were carried out.The changes of the mudstone’s mechanical parameters and creep characteristics with the increment of water saturation were studied.The results indicate that the rock strength and elastic modulus decrease rapidly with the increment of water content,at the same time,the creep strain and creep strain rate of steady state increase with the increment of water content,and also the steady state creep strain rate is enhanced with the increment of deviatoric stress.Through the creep characteristic curves,a non-linear creep constitutive equation of mudstone considering the change of water contents is established,which will be used in future numerical analysis.

  20. Treatment of oilfield wastewater in moving bed biofilm reactors using a novel suspended ceramic biocarrier.

    Science.gov (United States)

    Dong, Zhiyong; Lu, Mang; Huang, Wenhui; Xu, Xiaochun

    2011-11-30

    In this study, a novel suspended ceramic carrier was prepared, which has high strength, optimum density (close to water), and high porosity. Two different carriers, unmodified and sepiolite-modified suspended ceramic carriers were used to feed two moving bed biofilm reactors (MBBRs) with a filling fraction of 50% to treat oilfield produced water. The hydraulic retention time (HRT) was varied from 36 to 10h. The results, during a monitoring period of 190 days, showed that removal efficiency of chemical oxygen demand was the highest in reactor 3 filled with the sepiolite-modified carriers, followed by reactor 2 filled with the unmodified carriers, with the lowest in reactor 1 (activated sludge reactor), at an HRT of 10h. Similar trends were found in the removal efficiencies of ammonia nitrogen and polycyclic aromatic hydrocarbons. Reactor 3 was more shock resistant than reactors 2 and 1. The results indicate that the suspended ceramic carrier is an excellent MBBR carrier.

  1. Standard guide for evaluating and qualifying oilfield and refinery corrosion inhibitors in the laboratory

    CERN Document Server

    American Society for Testing and Materials. Philadelphia

    2006-01-01

    1.1 This guide covers some generally accepted laboratory methodologies that are used for evaluating corrosion inhibitors for oilfield and refinery applications in well defined flow conditions. 1.2 This guide does not cover detailed calculations and methods, but rather covers a range of approaches which have found application in inhibitor evaluation. 1.3 Only those methodologies that have found wide acceptance in inhibitor evaluation are considered in this guide. 1.4 This guide is intended to assist in the selection of methodologies that can be used for evaluating corrosion inhibitors. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.

  2. Failure life determination of oilfield elastomer seals in sour gas/dimethyl disulfide environments

    Energy Technology Data Exchange (ETDEWEB)

    Kennelley, K.J.; Abrams, P.I. (Exxon Production Research Co., Houston, TX (US)); Vicic, J.C. (FMC Corp., Central Engineering Labs., Santa Clara, CA (US)); Cain, D. (FMC Corp., Wellhead Equipment, Houston, TX (US))

    1989-01-01

    Previous screening tests of various oilfield elastomers in sour gas/dimethyl disulfide environments indicated that hydrogenated nitrile (HNBR), tetrafluoroethylene-propylene (TFE/P), ethylene-propylene-diene (EPDM), and perfluorinated rubber (FFKM) elastomers may perform satisfactorily in these environments. This paper describes subsequent failure life tests conducted with the subject elastomers in the sour gas/dimethyl disulfide test environment at several elevated temperatures (> 135{degrees}C). The materials were tested in the form of O-rings (size 214), which were used to seal an autoclave containing the test environment at 14 MPa gas pressure. The results were used to extrapolate time to failure at a common reference temperature of 135{degrees}C. The performance of EPDM and HNBR in the sour gas/dimethyl disulfide mixture substantially exceeded a projected 20-year service life at 135{degrees}C, while FFKM and TFE/P did not.

  3. Corrosion Behaviors of PI 10 Steel and Chromium Coating in CO2-saturated Simulated Oilfield Brine

    Institute of Scientific and Technical Information of China (English)

    LIN Naiming; XIE Faqin; ZHOU Jun; WU Xiangqing; TIAN Wei

    2011-01-01

    The protective chromium coating was prepared on P110 steel by employing pack cementation. The corrosion behaviors of P110 steel and the obtained coating in CO2-saturated simulated oilfield brine were studied by static complete immersion tests and electrochemical measurements.The corrosion attacks of the samples were determined by mass loss, corroded surface morphologies,corrosion products, and results of electrochemical measurements. The experimental results showed that the coating was uniform, continuous and compact. The chromium coating was slightly corroded,and the mass loss and corrosion rate of the coating were far lower than those of P110 steel. Chromium coating has higher self-corroding potential and lower corrosion current density than P110 steel in accordance with the electrochemical tests results. Taken as a whole, chromizing treatment has significantly improved the corrosion resistance of P110 steel.

  4. Embedded Wireless Based Communications and Security Application for Oilfield for Automatic Controlling

    Directory of Open Access Journals (Sweden)

    Ganesh V Padole

    2011-07-01

    Full Text Available The site of oil-well is distributed dispersedly, but distribution area is wide. Oil exhauster continuous working for 24 hours. As the problem of petroleum being stolen, transmission line being stolen, and transformer being stolen exists which requires the strong secures management system. With Consideration of the objective condition restriction of geographical environment, the implementation of safe management for oilfield is very difficult. We overcome these difficulties, which comes from geographical environment. The cost is not only high if the fiber cable would be lay between working station in the several tens of square kilometers, but also need to put into a lot of human and material resources with line maintenance and guard against theft. It is a perfect scheme that remote wireless monitoring and control system is established. The system is required to manage the data received from the various site and providing the security by managing and providing automatic controlling structure.

  5. Research on CO2 Quality Pipeline Transportation Based on Yanchang Oilfield CCUS

    Directory of Open Access Journals (Sweden)

    Yang Yongchao

    2017-01-01

    Full Text Available CO2 capture,utilization and storage (CCUS is now recognized as an important technology in the global scope of CO2 emission reduction, pipeline transportation is the main center to connect the capture point and the use storage point, the first issue to CO2 pipeline transportation is to solve CO2 source quality research. Yanchang Oilfield has the advantages of CCUS, its coal chemical capture of CO2 contains different impurities. In the CO2 pipeline transportation, the impurity content in CO2 is based on its end use and the actual situation of pipeline. The impurities will affect the efficiency of CO2-EOR, the choice of CO2 state equation, the changes of CO2 phase diagram and the capacity of pipeline transportation.

  6. Total petroleum hydrocarbon distribution in soils and groundwater in Songyuan oilfield, Northeast China.

    Science.gov (United States)

    Teng, Yanguo; Feng, Dan; Song, Liuting; Wang, Jinsheng; Li, Jian

    2013-11-01

    In order to investigate the distribution of the total petroleum hydrocarbons (TPH) in groundwater and soil, a total of 71 groundwater samples (26 unconfined groundwater samples, 37 confined groundwater samples, and 8 deeper confined groundwater samples) and 80 soil samples were collected in the Songyuan oilfield, Northeast China, and the vertical variation and spatial variability of TPH in groundwater and soil were assessed. For the groundwater from the unconfined aquifer, petroleum hydrocarbons were not detected in three samples, and for the other 23 samples, concentrations were in the range 0.01-1.74 mg/l. In the groundwater from the confined aquifer, petroleum hydrocarbons were not detected in two samples, and in the other 35 samples, the concentrations were 0.04-0.82 mg/l. The TPH concentration in unconfined aquifer may be influenced by polluted surface water and polluted soil; for confined aquifer, the injection wells leakage and left open hole wells may be mainly responsible for the pollution. For soils, the concentrations of TPH varied with sampling depth and were 0-15 cm (average concentration, 0.63 mg/g), >40-55 cm (average concentration, 0.36 mg/g), >100-115 cm (average concentration, 0.29 mg/g), and >500-515 cm (average concentration, 0.26 mg/g). The results showed that oil spillage and losses were possibly the main sources of TPH in soil. The consequences concluded here suggested that counter measures such as remediation and long-term monitoring should be commenced in the near future, and effective measures should be taken to assure that the oilfields area would not be a threat to human health.

  7. 基于古医籍中生肌散用药配伍规律的分析研究%Study on Medication and Compatibility Laws of ShengJi Powder Based on Ancient Medical Works

    Institute of Scientific and Technical Information of China (English)

    万学谦; 李廷保

    2014-01-01

    There are 74 medical works about ShengJi powder in Tang, Song, Yuan, Ming and Qing dynasties a-mong the works before Qing dynasty. There were 88 pieces of ShengJi powder with correct names appeared in 60 medical works, and 14 pieces of ShengJi powder in different names. Altogether 88 prescriptions involved 93 kinds of herbs which could be classified into 18 types, total frequency of single drug was 550 times, among them, core drug with the frequency above 30% were respectively ten kinds of herbs: calomel, frankincense, MoYao (Commiphora myrrha Eng1.), fossil fragments, XueJie (Resina Draconis), HaiErCha [Acacia catechu (Linn. f.) Willd.], ShengDan (Hydrargyrum Oxydatum Crudum Bottom), ChiShiZhi (Halloysitum Rubrum), Borneol and HaiPiaoXiao (Sepiella maindroni de Rochebrune), and the prescriptions were composed of the core drugs by the modification and compati-bility.%自清以前古医籍中,仅唐、宋、元、明、清五代共74部医籍涉及有关生肌散的方剂。其中60部出现正名生肌散88首,14部出现异名生肌散14首。88首复方中共涉及中药93种分为18类,单味用药总次数为550次,其中频率大于30%的核心中药分别为轻粉、乳香、没药、龙骨、血竭、孩儿茶、升丹、赤石脂、冰片、海螵蛸10种,并且大多数生肌散均由此核心药加减配伍而成。

  8. 渤海稠油聚合物驱增油量评价方法适应性分析*%Adaptability Analysis of Incremental Oil Production Evaluation Method for Polymer Flooding in Bohai Oilfield

    Institute of Scientific and Technical Information of China (English)

    郑伟; 张贤松; 姜汉桥; 耿彬; 陈民锋

    2013-01-01

    Because of different oil viscosity and polymer injection time,it is necessary to analyze the adaptability of the water flooding characteristic curves,which are used to predict oil production of water flooding,so as to select the suitable incremental oil production evaluation method. Based on the actual reservoir data,typical models were built. Taking into consideration different polymer injection time and oil viscosity,oil production of water flooding was predicted using different water drive characteristic curves,thus the incremental oil production was determined. According to the results from numerical simulation,average error and standard deviation were computed,and the appropriate evaluation method was selected. Based on adaptability analysis results,incremental oil production of the polymer flooding trail in Bohai oilfield was calculated,and the error was small compared with the results from reservoir simulation. This provides reference and guidance to accurate calculation of incremental oil production for polymer flooding in Bohai Oilfield.%针对渤海稠油油田原油黏度覆盖范围广、实施聚合物驱时机早晚不一的问题,需对预测水驱产油量的水驱特征曲线方法进行适应性分析,以便筛选合适的增油量评价方法。根据渤海海域某稠油油田实际油藏数据,建立典型模型,考虑不同聚合物驱时机和不同原油黏度情况下,分别用甲型、乙型、丙型、丁型水驱特征曲线预测不同含水阶段下水驱产油量,从而得到相应的聚驱增油量,与数模计算结果对比,计算其平均误差和标准差,从而筛选出合适的增油量评价方法。根据适应性分析结果,对渤海某聚合物驱试验区进行增油量分析,与数值模拟跟踪评价结果对比其结果误差较小,准确性高。为准确计算渤海油田聚合物驱增油量提供了借鉴和指导。

  9. Clinical Observation on ShengBai Capsule in Treating Leucopenia%升白胶囊治疗白细胞减少症临床观察

    Institute of Scientific and Technical Information of China (English)

    姚金华; 田占雍; 赵淑芳; 韩明祖; 开金龙; 段赟

    2014-01-01

    Objective:To observe clinical effects of ShengBai capsule in the treatment for leucopenia. Meth-ods:All 195 patients were randomized into 105 cases of the treatment group (ShengBai capsule) and 90 cases of the control group (berberine hydrochloride). Routine blood examination was conducted once per week, the detection of liver function, renal function and blood glucose once per month, the improvements of clinical symptoms including lack of power, vertigo, insomnia and sore throat, WBC count were observed before and after treating. Results:Markedly effective rate of the treatment group was 53%, effective rate 42.14%, total effective rate 95.14%;markedly effective rate of the control group was 40.00%, effective rate 43.33%, total effective rate 83.33%, the difference demonstrated statistical meaning between both groups (P<0.01). Conclusion:ShengBai capsule could obviously in-crease WBC of the patients with leucopenia, it could significantly improve clinical symptoms of the patients, shorten the course of the treatment, its effects are better than berberine hydrochloride.%目的:观察升白胶囊治疗白细胞减少症的临床疗效。方法:将白细胞减少症患者195例随机分为治疗组105例服用升白胶囊治疗,对照组90例服用升白胺治疗。每周1次血常规检测,每月1次肝、肾功能及血糖检测,观察治疗前后白细胞计数及患者乏力、头晕、失眠、咽痛等临床症状改善情况。结果:治疗组显效率为53%,有效率为42.14%,总有效率为95.14%;对照组显效率为40.00%,有效率为43.33%,总有效率为83.33%,2组比较差异具有统计学意义(P<0.01)。结论:升白胶囊对于白细胞减少症患者有明显升高白细胞的作用,可明显改善患者临床症状,缩短疗程,疗效优于升白胺。

  10. A detailed analysis of micro-seismicity induced by a high-rate wastewater disposal well in the Val d'Agri oilfield (Italy)

    Science.gov (United States)

    Improta, L.; Valoroso, L.; Piccinini, D.; Buttinelli, M.; Chiarabba, C.

    2015-12-01

    The Val d'Agri basin in the Apennines extensional belt hosts the largest oilfield in onshore Europe. High-quality recordings from a temporary dense network unravel a swarm of 111 small-magnitude events (ML ≤ 1.8) occurred in June 2006 during the first stage of wastewater injection into a high-rate well. 3D absolute locations and high-precision relative locations define a high-angle fault located 1 km below the well inside fractured and saturated carbonates where wastewater is re-injected. Seismicity begins 3 hours after the initiation of injection. The seismicity rate strictly correlates with injection curves and temporal variations of elastic and anisotropic parameters. Seismicity is induced by rapid communication of pore pressure perturbations along a high permeability fault-zone favorably oriented with respect to the extensional stress field. The spatiotemporal distribution of events agrees with an isotropic hydraulic diffusivity of 0.8 m2/s, which corresponds to high permeability values on the order of 10-13 m2/s. Such high permeability values are coherent with hydraulic well-tests in the very productive hydrocarbon reservoir and with the presence of a widespread system of open and conductive fractures in the carbonates that strike NW-SE parallel to the maximum horizontal stress of the extensional stress regime. Over the following 8 years, 235 events (ML ≤ 2.2) were recorded within 5 km of the disposal well by permanent stations of the local operator network and of Istituto Nazionale di Geofisica e Vulcanologia. Accurate 3D locations concentrate on the fault and unravel that after June 2006 micro-seismicity migrated upwards and downwards along the fault measuring 5-km along dip. Subsurface data show that the fault is a pre-existing blind back-thrust of an inherited fold-thrust system developed in the carbonate reservoir during Pliocene-Early Pleistocene. The seismicity rate correlates with short-term increases in injection pressure of the disposal well.

  11. Numerical Simulation of Water shut - off of Horizontal Wells of Tahe Oilfield%塔河油田水平井堵水数值模拟

    Institute of Scientific and Technical Information of China (English)

    刘佳; 程林松; 黄世军; 王雷

    2013-01-01

    In view of the problems of high water cut in horizontal wells of Tahe Oilfield, numerical simulation models of individual wells are established; water shut - off parameters are analyzed and optimized by using fine reservoir description technology; and the parameters of the injection volume of water shut - off agent, water shut - off types, the injection volume of displacing liquid, work system after water shut - off, etc. are analyzed based on actual data. The results show that water shut - off is related to the lateral distribution of water shut - off agent and aimless increase in the volume of water shut - off doesn' t certainly gain oil; in the 4 types of water shut - off agent, the effectiveness of jelly agent is the best of all, emulsion liquid agent is good and grain agent is poor; for grain agent, the effectiveness of water shut - off increases after injection of a certain volume of displacing liquid; numerical simulation and reservoir performance data show that the effectiveness of controlling liquid production is the best when a horizontal well restarts production after water shut - off.%针对塔河油田水平井高含水问题,结合实际资料,建立单井数值模型,利用精细油藏数值模拟技术实现水平井堵水参数分析及优化,对堵剂注入量、堵剂类型、顶替液注入量以及堵后工作制度等相关参数进行分析.结果表明:堵水效果与堵剂在平面上的展布距离相关,不能盲目增加堵剂用量以达到增油效果;4种类型堵剂中,冻胶堵剂效果最好,乳状液次之,颗粒型堵剂效果较差;其中颗粒型堵剂注入一定量的顶替液后,堵水效果明显增强;数模与油井动态数据均表明,水平井堵水再生产时,控液生产堵水效果最优.

  12. Session: Reservoir Technology

    Energy Technology Data Exchange (ETDEWEB)

    Renner, Joel L.; Bodvarsson, Gudmundur S.; Wannamaker, Philip E.; Horne, Roland N.; Shook, G. Michael

    1992-01-01

    This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of five papers: ''Reservoir Technology'' by Joel L. Renner; ''LBL Research on the Geysers: Conceptual Models, Simulation and Monitoring Studies'' by Gudmundur S. Bodvarsson; ''Geothermal Geophysical Research in Electrical Methods at UURI'' by Philip E. Wannamaker; ''Optimizing Reinjection Strategy at Palinpinon, Philippines Based on Chloride Data'' by Roland N. Horne; ''TETRAD Reservoir Simulation'' by G. Michael Shook

  13. Geothermal reservoir engineering

    CERN Document Server

    Grant, Malcolm Alister

    2011-01-01

    As nations alike struggle to diversify and secure their power portfolios, geothermal energy, the essentially limitless heat emanating from the earth itself, is being harnessed at an unprecedented rate.  For the last 25 years, engineers around the world tasked with taming this raw power have used Geothermal Reservoir Engineering as both a training manual and a professional reference.  This long-awaited second edition of Geothermal Reservoir Engineering is a practical guide to the issues and tasks geothermal engineers encounter in the course of their daily jobs. The bo

  14. 油田加热炉的热力学分析%Thermodynamic Analysis for Oilfield Heating Furnace

    Institute of Scientific and Technical Information of China (English)

    邓寿禄; 杨秀莉; 胡晓峰

    2012-01-01

    依据热力学第二定律的(火用)分析方法,建立了油田加热炉(火用)平衡分析模型,分析了油田加热炉各环节的能量利用状况,并给出了提高加热炉(火用)效率的途径.%Based on the exergy analysis method of the second law of thermodynamics, the exergy-balance analysis model for oilfield heating furnace is built, and the energy utilization condition of all links for oilfield heating furnace is analyzed. Further more, the way of improving exergy efficiency is given.

  15. Geology and petrophysical characterization of the Ferron Sandstone for 3-D simulation of a fluvial-deltaic reservoir. Annual report, October 1, 1996--September 30, 1997

    Energy Technology Data Exchange (ETDEWEB)

    Chidsey, T.C. Jr.; Anderson, P.B.; Morris, T.H.; Dewey, J.A. Jr.; Mattson, A.; Foster, C.B.; Snelgrove, S.H.; Ryer, T.A.

    1998-05-01

    The objective of the Ferron Sandstone (Utah) project is to develop a comprehensive, interdisciplinary, quantitative characterization of a fluvial-deltaic reservoir to allow realistic interwell and reservoir-scale models to be developed for improved oil-field development in similar reservoirs world-wide. Both new and existing data is being integrated into a 3-D model of spatial variations in porosity, storativity, and tensorial rock permeability at a scale appropriate for inter-well to regional-scale reservoir simulation. Simulation results could improve reservoir management through proper infill and extension drilling strategies, reduction of economic risks, increased recovery from existing oil fields, and more reliable reserve calculations. The project is divided into four tasks: (1) regional stratigraphic analysis, (2) case studies, (3) reservoirs models, and (4) field-scale evaluation of exploration strategies. The primary objective of the regional stratigraphic analysis is to provide a more detailed interpretation of the stratigraphy and gross reservoir characteristics of the Ferron Sandstone as exposed in outcrop. The primary objective of the case-studies work is to develop a detailed geological and petrophysical characterization, at well-sweep scale or smaller, of the primary reservoir lithofacies typically found in a fluvial-dominated deltaic reservoir. Work on tasks 3 and 4 consisted of developing two- and three-dimensional reservoir models at various scales. The bulk of the work on these tasks is being completed primarily during the last year of the project, and is incorporating the data and results of the regional stratigraphic analysis and case-studies tasks.

  16. Comparison of bacterial community in aqueous and oil phases of water-flooded petroleum reservoirs using pyrosequencing and clone library approaches.

    Science.gov (United States)

    Wang, Li-Ying; Ke, Wen-Ji; Sun, Xiao-Bo; Liu, Jin-Feng; Gu, Ji-Dong; Mu, Bo-Zhong

    2014-05-01

    Bacterial communities in both aqueous and oil phases of water-flooded petroleum reservoirs were characterized by molecular analysis of bacterial 16S rRNA genes obtained from Shengli Oil Field using DNA pyrosequencing and gene clone library approaches. Metagenomic DNA was extracted from the aqueous and oil phases and subjected to polymerase chain reaction amplification with primers targeting the bacterial 16S rRNA genes. The analysis by these two methods showed that there was a large difference in bacterial diversity between the aqueous and oil phases of the reservoir fluids, especially in the reservoirs with lower water cut. At a high phylogenetic level, the predominant bacteria detected by these two approaches were identical. However, pyrosequencing allowed the detection of more rare bacterial species than the clone library method. Statistical analysis showed that the diversity of the bacterial community of the aqueous phase was lower than that of the oil phase. Phylogenetic analysis indicated that the vast majority of sequences detected in the water phase were from members of the genus Arcobacter within the Epsilonproteobacteria, which is capable of degrading the intermediates of hydrocarbon degradation such as acetate. The oil phase of reservoir fluid samples was dominated by members of the genus Pseudomonas within the Gammaproteobacteria and the genus Sphingomonas within the Alphaproteobacteria, which have the ability to degrade crude oil through adherence to hydrocarbons under aerobic conditions. In addition, many anaerobes that could degrade the component of crude oil were also found in the oil phase of reservoir fluids, mainly in the reservoir with lower water cut. These were represented by Desulfovibrio spp., Thermodesulfovibrio spp., Thermodesulforhabdus spp., Thermotoga spp., and Thermoanaerobacterium spp. This research suggested that simultaneous analysis of DNA extracted from both aqueous and oil phases can facilitate a better understanding of the

  17. A model of basement structure from magnetic anomalies of the Bombay High oil-field west of India

    Digital Repository Service at National Institute of Oceanography (India)

    Rao, D.G.

    -122 111 Elsevier Science Publishers B.V., Amsterdam A model of basement structure from magnetic anomalies of the Bombay High Oil-Field west of India D. Gopala Rao National Institute of Oceanography, Dona Paula, Goa 403 004, India (Revision accepted....5 kin LOWER MIOCENE LIMESTONE REFLECTOR (FROM SEISMIC DATA) ~',r V,,- v • - ~'¥¥YYYVV . ..... \\[~~'vvwvwyvvvvWvvvv " ":" ":'wv ..... I"'T .... L CLAY/CLAYSTONE ~ OBSERVED MAGNETIC ANOMALIES SHALE ~ THEORETICAL MAOHETIC ANOMALIES LIMESTONE...

  18. Bioflocculant Produced by Klebsiella sp. MYC and Its Application in the Treatment of Oil-field Produced Water

    Institute of Scientific and Technical Information of China (English)

    YUE Lixi; MA Chunling; CHI Zhenming

    2006-01-01

    Seventy-nine strains of bioflocculant-producing bacteria were isolated from 3 activated sludge samples. Among them, strain MYC was found to have the highest and stable flocculating rate for both kaolin clay suspension and oil-field produced water. The bacterial strain was identified as Klebsiella sp. MYC according to its morphological and biochemical characteristics and 16SrDNA sequence. The optimal medium for bioflocculant production by this bacterial strain was composed of cane sugar 20gL 1, KH2PO4 2gL-1, K2HPO4 5gL-1, (NH4)2SO4 0.2gL-1, urea 0.5gL-1 and yeast extract 0.5gL 1, the initial pH being 5.5. When the suspension of kaolin clay was treated with0.5% of Klebsiella sp. MYC culture broth, the flocculating rate reached more than 90.0 % in the presence of 500 mg L-1 CaCl2, while the flocculating rate for oil-field produced water was near 80.0% in a pH range of 7.0 - 9.0 with the separation of oil and suspended particles from the oil-field produced water under similar conditions. The environm ent-friendly nature of the bioflocculant and high flocculating rate of the strain make the bioflocculant produced by Klebsiella sp. MYC an attractive bioflocculant in oil-field produced water treatment.

  19. Geological and petrophysical characterization of the ferron sandstone for 3-D simulation of a fluvial-deltaic reservoir. Annual report, October 1, 1994--September 30, 1995

    Energy Technology Data Exchange (ETDEWEB)

    Chidsey, T.C. Jr.; Allison, M.L.

    1996-05-01

    The objective of the Ferron Sandstone project is to develop a comprehensive, interdisciplinary, quantitative characterization of a fluvial-deltaic reservoir to allow realistic interwell and reservoir-scale models to be developed for improved oil-field development in similar reservoirs world-wide. Quantitative geological and petrophysical information on the Cretaceous Ferron Sandstone in east-central Utah was collected. Both new and existing data is being integrated into a three-dimensional model of spatial variations in porosity, storativity, and tensorial rock permeability at a scale appropriate for inter-well to regional-scale reservoir simulation. Simulation results could improve reservoir management through proper infill and extension drilling strategies, reduction of economic risks, increased recovery from existing oil fields, and more reliable reserve calculations. Transfer of the project results to the petroleum industry is an integral component of the project. This report covers research activities for fiscal year 1994-95, the second year of the project. Most work consisted of developing field methods and collecting large quantities of existing and new data. We also continued to develop preliminary regional and case-study area interpretations. The project is divided into four tasks: (1) regional stratigraphic analysis, (2) case studies, (3) reservoirs models, and (4) field-scale evaluation of exploration strategies.

  20. Dynamic Variation of Land-use Types of the Constructed Wetland before and after Oil-field Water Irrigation Based on 3S Technology

    Institute of Scientific and Technical Information of China (English)

    CHEN; Ming-hui; ZHANG; Chen; HU; Yan; SU; Wei; DONG; De-ming

    2012-01-01

    [Objective] The study aimed at analyzing the dynamic variation of land-use types of the constructed wetland before and after oil-field water irrigation based on 3S technology. [Method] At semi-arid and arid areas in the west of Jilin Province, water resource balance between the amount of oil-field water supply and ecological water requirement in the constructed wetland irrigated by oil-field water during 2001-2010 was investigated firstly. Afterwards, based on 3S technology, the partition and dynamic variation of land-use types of the constructed wetland before and after oil-field water irrigation in 2001, 2006, 2008 and 2010 were analyzed. [Result] The annual ecological water requirement of the constructed wetland from 2003 to 2010 varied from 1.62×106 to 2.24×106 m3, and the annual amount of oil-field water supply in the region changed from 2.12×106 to 2.84×106 m3, which showed that the supply amount of oil-field water could meet the basic ecological water requirement of the constructed wetland. Meanwhile, compared with 2001, the areas of water region and paddy field in 2010 increased by 2.3 and 10.0 times, and the areas of forest and marsh rose by 40.15% and 29.5.0% respectively. [Conclusion] Water shortage and ecological environment problem of arid and semi-arid areas had been improved by oil-field water irrigation.

  1. SILTATION IN RESERVOIRS

    African Journals Online (AJOL)

    human resources. It is also intended to make known to the general public that ... port processes were not properly taken into account. ... Studies carried out on 19 reservoirs in Cen- tral Europe with storage capacity ranging be- tween 1.48 x ...

  2. A Systems Biology-Based Investigation into the Pharmacological Mechanisms of Sheng-ma-bie-jia-tang Acting on Systemic Lupus Erythematosus by Multi-Level Data Integration.

    Science.gov (United States)

    Huang, Lin; Lv, Qi; Liu, Fenfen; Shi, Tieliu; Wen, Chengping

    2015-11-12

    Sheng-ma-bie-jia-tang (SMBJT) is a Traditional Chinese Medicine (TCM) formula that is widely used for the treatment of Systemic Lupus Erythematosus (SLE) in China. However, molecular mechanism behind this formula remains unknown. Here, we systematically analyzed targets of the ingredients in SMBJT to evaluate its potential molecular mechanism. First, we collected 1,267 targets from our previously published database, the Traditional Chinese Medicine Integrated Database (TCMID). Next, we conducted gene ontology and pathway enrichment analyses for these targets and determined that they were enriched in metabolism (amino acids, fatty acids, etc.) and signaling pathways (chemokines, Toll-like receptors, adipocytokines, etc.). 96 targets, which are known SLE disease proteins, were identified as essential targets and the rest 1,171 targets were defined as common targets of this formula. The essential targets directly interacted with SLE disease proteins. Besides, some common targets also had essential connections to both key targets and SLE disease proteins in enriched signaling pathway, e.g. toll-like receptor signaling pathway. We also found distinct function of essential and common targets in immune system processes. This multi-level approach to deciphering the underlying mechanism of SMBJT treatment of SLE details a new perspective that will further our understanding of TCM formulas.

  3. Preparation of petroleum-degrading bacterial agent and its application in remediation of contaminated soil in Shengli Oil Field, China.

    Science.gov (United States)

    Yu, Yang; Zhang, Wen; Chen, Guanhong; Gao, Yongchao; Wang, Jianing

    2014-01-01

    Two petroleum-degrading strains were screened from oil fields and denoted as SWH-1 (Bacillus subtilis) and SWH-2 (Sphingobacterium multivorum), which were used to ferment and prepare bacterial agent to remediate petroleum-contaminated sites in Shengli Oil Field in China. The optimal liquid fermentation medium and conditions were MgSO₄·7H₂O (0.5%), NaCl (0.5%), soybean dregs (3%), pH 7.0, culturing at 30 °C, and 220 r/min for 16 h. Peat was chosen as the bacterial carrier due to its ability of keeping microbial activity. Mixed fermented liquid was added into peat (1:2) and air-dried, and the bacterial agent was obtained. It was applied to the petroleum-contaminated soil, which was irrigated, tilled, and fertilized. The removal rate reached 67.7% after 2 months of remediation. During remediation, the quantity of indigenous bacteria varied a lot, while the inoculated bacteria remained stable; the dehydrogenase activity was at high levels and then decreased. Indigenous microorganisms, inoculated bacterial agent, nutrients, water, and soil permeability all played important roles. The study prepared an environment-friendly bacterial agent and established a set of bioremediation technique, which provided further insights into integration of fermentation engineering and soil remediation engineering.

  4. Investigation on the catalytic effects of AAEM during steam gasification and the resultant char reactivity in oxygen using Shengli lignite at different forms

    Institute of Scientific and Technical Information of China (English)

    Jianxin Mi; Ningbo Wang; Mingfeng Wang; Pengju Huo; Dan Liu

    2015-01-01

    The purpose of this study is to investigate the catalytic effects of alkali and alkaline earth metallic species (AAEM) on char conversion during the gasification in steam and the changes in ex-situ char reactivity in oxygen after the gasification in steam using different forms (i.e. H-form, Na-form) of Shengli brown coal. The surface area, AAEM concentration and carbon crystallite of chars were obtained to understand the change in char reactivity. It was found that not only Na concentration and carbon structure were the main factors governing the char reactivity in the atmosphere of steam and oxygen, but also they interacted each other. The presence of Na could facilitate the formation of disordering carbon structure in char, and the amorphous carbon structure would in turn affect the distribution of Na and thus its catalytic performance. The surface area and pore volume had very little relationship with the char’s reactivity. Addi-tionally, the morphology of chars from different forms of coals were observed using scanning electron microscope (SEM).

  5. The measurement of the H2S in the pre-desulfurization of natural gas in the Shengli oil field with the TDL

    Science.gov (United States)

    Shu, Xiao-wen; Zhang, Yu-jun; Yu, Dian-qiang; Zhang, Shuai; Cui, Yi-ben; Kan, Rui-feng; He, Ying; Geng, Hui; Dong, Jin-ting; Liu, Wen-qing

    2009-07-01

    Hydrogen Sulfide, with the character of erosion and strong toxicity, is a kind of associated gas of nature gas. How to measure and monitor the hydrogen sulfide concentration becomes an important issue to be solved in nature gas transfer-process. Online measurement for the hydrogen sulfide concentration before the desulphurization remains very difficult in Bonan gas gathering station of SINOPEC Shengli Oil Field (SOF).TDL(Tunable Diode Laser) can relative easily select the absorption line of the detecting gas without the interference from other gas thus make the rapid and accurate hydrogen sulfide measurement a possible. In this paper, a hydrogen sulfide measurement system is designed and then be carried out in Bonan gas gathering station of (SOF) .The implemented experiments showed the system effectively solved some problems such as overfall, temperature and pressure. After comparing the hydrogen sulfide online detection sensor of the TDLAS industry with the long hydrogen sulfide detection tube, the linear fitted relationship with the correlation coefficient of 99.96% between them was attained. In order to meet the requests of industrial field anti-explosion, the open-path optical coupling technology was performed in china for the first time. All the results demonstrate that the system will be put into use and enjoy a high application in the near future.

  6. Depositional models of sandy debrites and turbidites of Palaeogene reservoir sands in deep-lacustrine environments, South China

    Science.gov (United States)

    Li, Y.; Chen, G.

    2013-12-01

    Two depositional models are proposed for deep-lacustrine petroleum reservior sands (Palaeogene) in the Fushan Sag, Beibuwan Basin, South China. This facies trend is used as a template for predicting the distribution of reservoir facies of the Fushan oilfield. Based on examination of 150m of conventional cores from 13 drilled wells, four depositional facies have been interpreted: (1) fine-grained massive sandstone with floating mudstone clasts and planar clast fabric (sandy debrite); (2) fine-grained sandstone and siltstone showing contorted bedding, sand injection, and ptygmatic folding (sandy slump), (3) fine-grained sandstone with thin layers of normal grading and flute casts (turbidite), and (4) mudstone with faint laminae (suspension fallout). Combined with multiple seismic attributes, two depositional models are characterized by (1) sublacustrine fan: thick turbidite units occur at the bottom of the western sag beneath a series of normal faults slope. (2) Thinner deposition of sandy debrites mainly distribute at the bottom of eastern sag far from sandy slump at the lake margin slope, which interpreted to be controlled by "two-step" flexure slope break. The transfer zone located in the centre area is confirmed to be the primary origin for such differential depositions. In our study area, sandy debrites constitute the producing petroleum reservoirs, but turbidites are non reservoirs. This dramatic understanding will well account for "eastern much more than western" distribution of proven petroleum reserves and be applicable to predicting reservoir distribution.

  7. Reservoir geochemistry: A link between reservoir geology and engineering?

    Energy Technology Data Exchange (ETDEWEB)

    Larter, S.R.; Aplin, A.C. [Univ. of Newcastle upon Tyne (United Kingdom); Corbett, P.; Ementon, N. [Heriot-Watt Univ., Edinburgh (United Kingdom)

    1994-12-31

    Geochemistry provides a natural but poorly exploited link between reservoir geology and engineering. The authors summarize some current applications of geochemistry to reservoir description and stress that because of their strong interactions with mineral surfaces and water, nitrogen and oxygen compounds in petroleum may exert an important influence on the PVT properties of petroleum, viscosity and wettability. The distribution of these compounds in reservoirs is heterogeneous on a sub-meter scale and is partly controlled by variations in reservoir quality. The implied variations in petroleum properties and wettability may account for some of the errors in reservoir simulations.

  8. Reservoir geochemistry: A link between reservoir geology and engineering?

    Energy Technology Data Exchange (ETDEWEB)

    Larter, S.R.; Aplin, A.C.; Chen, M.; Taylor, P.N. [Univ. of Newcastle (Australia); Corbett, P.W.M.; Ementon, N. [Heriot-Watt Univ., Edinburgh (United Kingdom)

    1997-02-01

    Geochemistry provides a natural, but poorly exploited, link between reservoir geology and engineering. The authors summarize some current applications of geochemistry to reservoir description and stress that, because of their strong interactions with mineral surfaces and water, nitrogen and oxygen compounds in petroleum may exert an important influence on the pressure/volume/temperature (PVT) properties of petroleum, viscosity and wettability. The distribution of these compounds in reservoirs is heterogeneous on a submeter scale and is partly controlled by variations in reservoir quality. The implied variations in petroleum properties and wettability may account for some of the errors in reservoir simulations.

  9. Research on Recovery of Offshore Oilfield Associated Gas%滩海油田伴生气回收研究

    Institute of Scientific and Technical Information of China (English)

    高钊; 刘德俊; 王芙; 马焱; 李小月; 高吉庆

    2013-01-01

    At present, due to small operation area of offshore oilfield production platform and the high risk of natural gas storage on the production platform, the associated gas after gas-liquid separation is often burned or evacuated. In the view of enhancing the economic efficiency of the offshore oilfield and reducing pollution of the environment, the recovery of offshore oilfield associated gas is very important. Now the methods of associated gas recovery contain the pipeline transportation, processing gas into liquefied natural gas, compressing natural gas, adsorbing natural gas and natural gas hydrate;some oilfields use the associated gas for generation. The comprehensive utilization of associated gas in China is just in the initial stage. In order to efficiently recover the associated gas, an economic and reasonable recycling program should be designed based on the oilfield environment.%目前,由于滩海油田采油平台的可操作面积小,加之在平台上储存天然气的危险性极高,故油田伴生气经气液分离后多采用排火烧掉或放空的处理方式。从提高滩海油田经济效益、减少环境污染的角度出发,滩海油田伴生气的回收十分重要。现阶段国内外伴生气的回收方法主要有管道输送和把天然气加工成液化天然气、压缩天然气、吸附天然气和天然气水合物等进行输送的方法,也有一些油田利用伴生气发电。我国伴生气的回收刚刚处于起步阶段,为了高效的回收滩海油田伴生气,需要参照油田环境,设计一套技术性、经济性合理的回收方案。

  10. Practice and Understanding of Oilfield Cloud Big Data%油田云大数据的实践与认识

    Institute of Scientific and Technical Information of China (English)

    马鸣

    2016-01-01

    Cloud big data technology is the important means to acquire valuable information from massive data at present, with the help of cloud big data technology, solid information basis is provided for intelligent oilfield construction. Using oilfield cloud big data's construction practice as an example, the article introduces the architecture of oilfield cloud big data, analyzes and introduces core application computing method of oilfield cloud big data from the point of petroleum business, and puts forward several suggestions for the next step of oilfield cloud big data construction.%云大数据技术是目前从海量数据中获取有价值信息的重要手段,借助云大数据技术,可为智能油田建设提供坚实的信息基础。本文以油田云大数据的建设实践为例,介绍了油田云大数据架构,并从石油业务的角度分析,介绍了油田云大数据的核心应用算法,并对油田下一步云大数据建设提出了几点思考。

  11. 探析节能环保下油田采油作业应注意的问题%Cautions in energy saving and environmental friendly oilfield exploitation

    Institute of Scientific and Technical Information of China (English)

    丁文昌; 张胜利; 王滇东; 刘克雷

    2016-01-01

    This article describes the importance of energy saving environmental-friendly oilfield as well as the cautions in oilfield exploitation.%本文讨论了建立节能环保油田项目的重要性,并提出了节能环保下油田开采的注意事项等。

  12. Status of Blue Ridge Reservoir

    Energy Technology Data Exchange (ETDEWEB)

    1990-09-01

    This is one in a series of reports prepared by the Tennessee Valley Authority (TVA) for those interested in the conditions of TVA reservoirs. This overview of Blue Ridge Reservoir summarizes reservoir and watershed characteristics, reservoir uses and use impairments, water quality and aquatic biological conditions, and activities of reservoir management agencies. This information was extracted from the most current reports and data available, as well as interview with water resource professionals in various federal, state, and local agencies. Blue Ridge Reservoir is a single-purpose hydropower generating project. When consistent with this primary objective, the reservoir is also operated to benefit secondary objectives including water quality, recreation, fish and aquatic habitat, development of shoreline, aesthetic quality, and other public and private uses that support overall regional economic growth and development. 8 refs., 1 fig.

  13. Integral analysis of geological and field data for selection of oilfield development strategy

    Science.gov (United States)

    Milke, A. A.; Tsivelev, K. V.

    2016-09-01

    The reservoir development plan is a complex process and should be analysed from different points of view. The process was analysed in terms of geology, petrophysics, modelling, production technology and economics. Therefore, different methods should be used for the project.

  14. Evidence for the microbial in situ conversion of oil to methane in the Dagang oilfield

    Energy Technology Data Exchange (ETDEWEB)

    Jimenez, N.; Richnow, H.H. [Helmholtz-Zentrum fuer Umweltforschung (UFZ), Leipzig (Germany). Abt. Isotopenbiogeochemie; Cai, M. [Helmholtz-Zentrum fuer Umweltforschung (UFZ), Leipzig (Germany). Abt. Isotopenbiogeochemie; University of Science and Technology, Beijing (China). School of Civil and Environment Engineering; Straaten, N.; Krueger, M. [Bundesanstalt fuer Geowissenschaften und Rohstoffe BGR Geozentrum (BGR), Hannover (Germany). Fachbereich Geochemie der Rohstoffe; Yao, Jun [University of Science and Technology, Beijing (China). School of Civil and Environment Engineering

    2013-08-01

    In situ biotransformation of oil to methane was investigated in a reservoir in Dagang, China using chemical fingerprinting, isotopic analyses, and molecular and biological methods. The reservoir is highly methanogenic despite chemical indications of advanced oil degradation, such as depletion of n-alkanes, alkylbenzenes, and light polycyclic aromatic hydrocarbon (PAHs) fractions or changes in the distribution of several alkylated polycyclic aromatic hydrocarbons. The degree of degradation strongly varied between different parts of the reservoir, ranging from severely degraded to nearly undegraded oil compositions. Geochemical data from oil, water and gas samples taken from the reservoir are consistent with in situ biogenic methane production linked to aliphatic and aromatic hydrocarbon degradation. Microcosms were inoculated with production and injection waters in order to characterize these processes in vitro. Subsequent degradation experiments revealed that autochthonous microbiota are capable of producing methane from {sup 13}C-labelled n-hexadecane or 2-methylnaphthalene, and suggest that further methanogenesis may occur from the aromatic and polyaromatic fractions of Dagang reservoir fluids. The microbial communities from produced oil-water samples were composed of high numbers of microorganisms (on the order to 10{sup 7}), including methane-producing Archaea within the same order of magnitude. In summary, the investigated sections of the Dagang reservoir may have significant potential for testing the viability of in situ conversion of oil to methane as an enhanced recovery method, and biodegradation of the aromatic fractions of the oil may be an important methane source. (orig.)

  15. Analysis of Drilling Troubles in Kazhdumi Formation of Yadavaran Oilfield, Iran

    Institute of Scientific and Technical Information of China (English)

    Bo Min; Xu Enxin; Jin Ruihuan; Peng Nian

    2015-01-01

    Drilling crews of Sinopec have encountered a series of troubles when drilling a formation called kazhdumi of Yadavaran oilfield, Iran in the last few years. The formation is buried in the depth from 3300m to 3500m, mainly including limestone, muddy limestone and some bituminous shale. Many microfissures exist in the formation and the equivalent density of formation pore pressure ranged from 1.19g/cm3 to 1.59g/cm3. Asphalt or heavy oil kicks occurred in drilling three wells in one and a half years, which contaminated the drilling fluid and made well killing difficult due to the kicks and lost circulation in open hole. Gas and hydrogen sulfide (the concentration is up to 40000ppm) were present in the wells, and finally two wells were completely abandoned and one partially lost, which frustrated the drilling engineering seriously. By analyzing the data of the drilled wells, the paper summarized the causes of the troubles, and put forward suggestions and conclusions that can serve as reference and guideline for drilling well in this area in the future.

  16. Biomarker characteristics of the Turonian–Eocene succession, Belayim oilfields, central Gulf of Suez, Egypt

    Directory of Open Access Journals (Sweden)

    W.Sh. El Diasty

    2016-02-01

    Full Text Available This study assesses the hydrocarbon source rocks of the Belayim oilfields, central Gulf of Suez, Egypt. Detailed geochemical methods, including liquid chromatography, gas chromatography and gas chromatography–mass spectrometry, are used to characterize organic-rich facies of the Turonian–Eocene deposits. Crude oil samples are analyzed using C7 and stable carbon isotopes, in addition to analysis of the extracts, in order to throw light on the organic matter source, composition, and thermal maturity. The source rocks are mainly derived from algae and bacteria deposited under normal saline and reducing palaeoenvironmental conditions, with a minimal contribution from terrestrial organic and mainly clay-poor source rocks. This is evidenced by the n-alkane distribution, the pristane/phytane, homohopane, gammacerane index, the high concentration of cholestane, the presence of the C30 n-propylcholestanes and low diasteranes ratios. The source rock extracts range from immature to marginally mature, based on biomarker maturity-related parameters. A similar scenario is envisaged from the crude oil samples which showed a partial positive correlation with the source rocks of the Eocene Thebes Formation, and the Upper Cretaceous Brown Limestone. Our data suggest that Turonian–Santonian Matulla Formation samples may signify the presence of some oil in the study area.

  17. Treatment of oilfield wastewater in moving bed biofilm reactors using a novel suspended ceramic biocarrier

    Energy Technology Data Exchange (ETDEWEB)

    Dong, Zhiyong, E-mail: bluemanner@163.com [State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249 (China); Lu, Mang [School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, Jiangxi Province (China); Huang, Wenhui [School of Energy Resources, China University of Geosciences, Beijing 100083 (China); Xu, Xiaochun [School of Geosciences and Resources, China University of Geosciences, Beijing 100083 (China)

    2011-11-30

    Highlights: Black-Right-Pointing-Pointer We invented a novel suspended ceramic carrier. Black-Right-Pointing-Pointer The suspended ceramic carrier is modified with sepiolite. Black-Right-Pointing-Pointer The carriers were used in MBBR to remediate wastewater. - Abstract: In this study, a novel suspended ceramic carrier was prepared, which has high strength, optimum density (close to water), and high porosity. Two different carriers, unmodified and sepiolite-modified suspended ceramic carriers were used to feed two moving bed biofilm reactors (MBBRs) with a filling fraction of 50% to treat oilfield produced water. The hydraulic retention time (HRT) was varied from 36 to 10 h. The results, during a monitoring period of 190 days, showed that removal efficiency of chemical oxygen demand was the highest in reactor 3 filled with the sepiolite-modified carriers, followed by reactor 2 filled with the unmodified carriers, with the lowest in reactor 1 (activated sludge reactor), at an HRT of 10 h. Similar trends were found in the removal efficiencies of ammonia nitrogen and polycyclic aromatic hydrocarbons. Reactor 3 was more shock resistant than reactors 2 and 1. The results indicate that the suspended ceramic carrier is an excellent MBBR carrier.

  18. Correlation of oilfield service companies' R&D investment on the basis of competitive speculation

    Institute of Scientific and Technical Information of China (English)

    Yuan Lei; Zhang Baosheng

    2008-01-01

    When an oligopoly company decides how much should be invested in its R&D,in order to reap the largest profits,it considers not only what its competitors have done but also how its competitors would respond to its action.Therefore,different relationships between oligopoly companies will lead to different responses in their decisions on R&D investment.A correlation deduced from different responses of oligopoly companies in R&D investment with the complete information tactic game theory is presented,and the R&D investment of oilfield service companies was analyzed with this correlation.The correlations of Schlumberger's R&D investment,Halliburton's R&D investment and Baker Hughes' R&D investment were established and analyzed.Meanwhile,two regression models were presented.One was composed of Schlumberger's R&D investment in the previous year and Halliburton's R&D investment.The other was composed of Schlumberger's R&D investment and Baker Hughes' R&D investment in the same year.The accuracy of these two models was proved to be good.

  19. Origin, migration and mixing of oilfield brines: Stable iso-topic evidence from Kuqa Foreland Basin

    Institute of Scientific and Technical Information of China (English)

    蔡春芳; 汪集旸; 曾凡刚; 何宏

    2001-01-01

    87Sr/86Sr, 8 D and δ180 together with chemistry of oilfield brines, were measured from Cambrian to Neogene strata in the Kuqa Foreland Basin, northwest China. The brines have 87Sr/86Sr ratios ranging from 0.70944 to 0.71716, 8D values from -33‰ to -67‰ and δ18O from -9.0‰ to 3.9‰. The most radiogenic 87Sr brines have relatively heavy δ18O in the Cambro- Ordo-vician carbonates, and are suggested to originate from crystalline basement. 8 D and δ18O sys-tematics show that all the brines slope to Global Meteoric Water Line, and intersect at 8 D = -60‰ and δ18O = -8.8‰, close to that of present-day local meteoric water, suggesting that meteoric water has mixed with evaporated ancient meteoric water. More saline samples have the lowest δD and δ180 contents and molar Na/CI ratios of more than 0.9, resulting from salt dissolution.

  20. Treatment of oilfield fracturing wastewater by a sequential combination of flocculation, Fenton oxidation and SBR process.

    Science.gov (United States)

    Yang, Jian; Hong, Liang; Liu, Yan-Hong; Guo, Jian-Wei; Lin, Li-Fei

    2014-01-01

    In this study, a combined process was developed that included flocculation, Fenton oxidation and sequencing batch reactor (SBR) to treat oilfield fracturing wastewater (FW). Flocculation and Fenton oxidation were applied to reduce chemical oxygen demand (COD) organic load and to enhance biodegradability, respectively. For flocculation, the optimum conditions were: polymeric aluminium chloride dosage, 40 mg/L; polyacrylamide dosage, 4 mg/L; dilution ratio, 1:2 and stirring time, 30 min. For Fenton oxidation, a total reaction time of 60 min, a H₂O₂dosage of 2 m mol/L, with a [H₂O₂]/[FeSO₄] ratio of 2 were selected to achieve optimum oxidation. Under these optimum flocculation and Fenton oxidation conditions, the COD removal efficiency was found to be 76.6%. Following pretreatment with flocculation and Fenton oxidation, the FW was further remediated using a SBR. Results show that COD was reduced to 92 mg/L, and the overall water quality of the final effluent could meet the class I national wastewater discharge standard of petrochemical industry of China.

  1. Microbiological Diversity of the Anaerobic Sludge During Treatment of Venezuelan Oilfield Produced Waters

    Directory of Open Access Journals (Sweden)

    Cajacuri María Patricia

    2013-06-01

    Full Text Available In the present investigation the microbial abundances in the granular sludge of two upflow anaerobic sludge blanket reactors (UASB were compared: the first one fed with production waters of light oil (31.1-39.0° API, from the zuliana region (Venezuela (APP and the second one with glucose. To this respect, the populations of glucose fermenting bacteria (BFG, acetogenic bacteria (BAC, metanogens (MET, sulfatereducing bacteria (BSR, nitrate-reducing bacteria (BNRand heterotrophic bacteria were monitored, using selective culture media. The microbial density was correlated with physicochemical parameters: pH, total alkalinity, COD, SO4 =, NO3-, as well as with the percentages of CH4, CO2 and N2in the biogas. The results exhibit significant differences between the microbial diversity of both reactors, with a proportion of BFG > BSR > MET > BAC > BNR for the glucose reactor and of MET > BNR > BAC > BSR > BFG for the APP. The abundance of bacteria in the glucose reactor was in the order of 108, whereas in the APP reactor was of 105, which ensues from the organic and mineral composition of effluents. The results presented in this study reach evidences on the population dynamics in sludge of UASB reactors, during the treatment of oilfield produced waters.

  2. Using multi-walled carbon nanotubes (MWNTs) for oilfield produced water treatment with environmentally acceptable endpoints.

    Science.gov (United States)

    Zaib, Qammer; Aina, Oluwajinmi Daniel; Ahmad, Farrukh

    2014-08-01

    In this study, multi-walled carbon nanotubes (MWNTs) were employed to remove benzene, toluene, ethylbenzene, and xylenes (BTEX) from low and high salinity water pre-equilibrated with crude oil. The treatment endpoint of crude oil-contaminated water is often controlled by BTEX compounds owing to their higher aqueous solubility and human-health toxicity compared to other hydrocarbons. The MWNT sorbent was extensively characterized and the depletion of the organic sorbate from the produced water was monitored by gas chromatography-mass spectrometry (GC-MS) and total organic carbon (TOC) analyses. The equilibrium sorptive removal of BTEX followed the order: ethylbenzene/o-xylene > m-xylene > toluene > benzene in the presence of other competing organics in produced water. Sorption mechanisms were explored through the application of a variety of kinetics and equilibrium models. Pseudo 2(nd) order kinetics and Freundlich equilibrium models were the best at describing BTEX removal from produced water. Hydrophobic interactions between the MWNTs and BTEX, as well as the physical characteristics of the sorbate molecules, were regarded as primary factors responsible for regulating competitive adsorption. Salinity played a critical role in limiting sorptive removal, with BTEX and total organic carbon (TOC) removal falling by 27% and 25%, respectively, upon the introduction of saline conditions. Results suggest that MWNTs are effective in removing risk-driving BTEX compounds from low-salinity oilfield produced water.

  3. Removal Capacities of Polycyclic Aromatic Hydrocarbons (PAHs by a Newly Isolated Strain from Oilfield Produced Water

    Directory of Open Access Journals (Sweden)

    Yi-Bin Qi

    2017-02-01

    Full Text Available The polycyclic aromatic hydrocarbon (PAH-degrading strain Q8 was isolated from oilfield produced water. According to the analysis of a biochemical test, 16S rRNA gene, house-keeping genes and DNA–DNA hybridization, strain Q8 was assigned to a novel species of the genus Gordonia. The strain could not only grow in mineral salt medium (MM and utilize naphthalene and pyrene as its sole carbon source, but also degraded mixed naphthalene, phenanthrene, anthracene and pyrene. The degradation ratio of these four PAHs reached 100%, 95.4%, 73.8% and 53.4% respectively after being degraded by Q8 for seven days. A comparative experiment found that the PAHs degradation efficiency of Q8 is higher than that of Gordonia alkaliphila and Gordonia paraffinivorans, which have the capacities to remove PAHs. Fourier transform infrared spectra, saturate, aromatic, resin and asphaltene (SARA and gas chromatography–mass spectrometry (GC–MS analysis of crude oil degraded by Q8 were also studied. The results showed that Q8 could utilize n-alkanes and PAHs in crude oil. The relative proportions of the naphthalene series, phenanthrene series, thiophene series, fluorene series, chrysene series, C21-triaromatic steroid, pyrene, and benz(apyrene were reduced after being degraded by Q8. Gordonia sp. nov. Q8 had the capacity to remediate water and soil environments contaminated by PAHs or crude oil, and provided a feasible way for the bioremediation of PAHs and oil pollution.

  4. Removal Capacities of Polycyclic Aromatic Hydrocarbons (PAHs) by a Newly Isolated Strain from Oilfield Produced Water

    Science.gov (United States)

    Qi, Yi-Bin; Wang, Chen-Yu; Lv, Cheng-Yuan; Lun, Zeng-Min; Zheng, Cheng-Gang

    2017-01-01

    The polycyclic aromatic hydrocarbon (PAH)-degrading strain Q8 was isolated from oilfield produced water. According to the analysis of a biochemical test, 16S rRNA gene, house-keeping genes and DNA–DNA hybridization, strain Q8 was assigned to a novel species of the genus Gordonia. The strain could not only grow in mineral salt medium (MM) and utilize naphthalene and pyrene as its sole carbon source, but also degraded mixed naphthalene, phenanthrene, anthracene and pyrene. The degradation ratio of these four PAHs reached 100%, 95.4%, 73.8% and 53.4% respectively after being degraded by Q8 for seven days. A comparative experiment found that the PAHs degradation efficiency of Q8 is higher than that of Gordonia alkaliphila and Gordonia paraffinivorans, which have the capacities to remove PAHs. Fourier transform infrared spectra, saturate, aromatic, resin and asphaltene (SARA) and gas chromatography–mass spectrometry (GC–MS) analysis of crude oil degraded by Q8 were also studied. The results showed that Q8 could utilize n-alkanes and PAHs in crude oil. The relative proportions of the naphthalene series, phenanthrene series, thiophene series, fluorene series, chrysene series, C21-triaromatic steroid, pyrene, and benz(a)pyrene were reduced after being degraded by Q8. Gordonia sp. nov. Q8 had the capacity to remediate water and soil environments contaminated by PAHs or crude oil, and provided a feasible way for the bioremediation of PAHs and oil pollution. PMID:28241412

  5. Mechanism evaluation of carbon dioxide miscible flooding : Caoshe oilfield case study

    Energy Technology Data Exchange (ETDEWEB)

    Tang, Y.; Du, Z.; Sun, L. [State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu (China); Southwest Petroleum Univ., Chengdu (China); Yu, K.; Liu, W.; Chen, Z. [SINOPEC (China). East China Oil Field Branch

    2009-07-01

    This paper investigated the mechanisms of a carbon dioxide (CO{sub 2}) miscible flooding project at an oilfield in China. Laboratory tests included pressure-volume-temperature (PVT), CO{sub 2} injection swelling, and slim tube tests. Results of the experimental tests were then used to construct an equations-of-state (EOS) compositional model with a 1D and 2D profile of an injector-production well group. Changes in fluid composition and the viscosity and density of the oil and vapor phases were characterized as well as the interfacial tension between oil and gas along the grids during the CO{sub 2} injection process. The effect of gas volume and injection pressure on fluid properties was also investigated. the study showed that the minimum miscibility pressure (MMP) of the project is 30 MPa. The model content of the CO{sub 2} in oil phase can be reacted at a formation pressure of 32 MPa with a 70 per cent oil phase. A continuous CO{sub 2} injection method with formation pressures above the MMP was recommended for the field. 10 refs., 3 tabs., 22 figs.

  6. Terrestrial exposure of oilfield flowline additives diminish soil structural stability and remediative microbial function

    Energy Technology Data Exchange (ETDEWEB)

    George, S.J.; Sherbone, J.; Hinz, C. [Centre for Land Rehabilitation, School of Earth and Environment, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 (Australia); Tibbett, M., E-mail: m.tibbett@cranfield.ac.uk [Centre for Land Rehabilitation, School of Earth and Environment, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 (Australia)

    2011-10-15

    Onshore oil production pipelines are major installations in the petroleum industry, stretching many thousands of kilometres worldwide which also contain flowline additives. The current study focuses on the effect of the flowline additives on soil physico-chemical and biological properties and quantified the impact using resilience and resistance indices. Our findings are the first to highlight deleterious effect of flowline additives by altering some fundamental soil properties, including a complete loss of structural integrity of the impacted soil and a reduced capacity to degrade hydrocarbons mainly due to: (i) phosphonate salts (in scale inhibitor) prevented accumulation of scale in pipelines but also disrupted soil physical structure; (ii) glutaraldehyde (in biocides) which repressed microbial activity in the pipeline and reduced hydrocarbon degradation in soil upon environmental exposure; (iii) the combinatory effects of these two chemicals synergistically caused severe soil structural collapse and disruption of microbial degradation of petroleum hydrocarbons. - Highlights: > Effects of flowline additives on soil structure and microbial function highlighted. > Phosphonate salts (in scale inhibitor) were found to disrupt soil physical structure. > Glutaraldehyde (in biocides) caused significant reduction of hydrocarbon degradation in soil. > Flowline additive chemicals synergistically affects soil structure and remediative microbial function. - Scale inhibitor and biocide oilfield flowline additives interactively affect soil physical and microbial properties

  7. Phylogenetic diversity of microbial communities associated with the crude-oil, large-insoluble-particle and formation-water components of the reservoir fluid from a non-flooded high-temperature petroleum reservoir.

    Science.gov (United States)

    Kobayashi, Hajime; Endo, Keita; Sakata, Susumu; Mayumi, Daisuke; Kawaguchi, Hideo; Ikarashi, Masayuki; Miyagawa, Yoshihiro; Maeda, Haruo; Sato, Kozo

    2012-02-01

    The diversity of microbial communities associated with non-water-flooded high-temperature reservoir of the Niibori oilfield was characterized. Analysis of saturated hydrocarbons revealed that n-alkanes in crude oil from the reservoir were selectively depleted, suggesting that crude oil might be mildly biodegraded in the reservoir. To examine if any specific microorganism(s) preferentially attached to the crude oil or the other components (large insoluble particles and formation water) of the reservoir fluid, 16S rRNA gene clone libraries were constructed from each component of the reservoir fluid. The clones in the archaeal libraries (414 clones in total) represented 16 phylotypes, many of which were closely related to methanogens. The bacterial libraries (700 clones in total) were composed of 49 phylotypes belonging to one of 16 phylum-level groupings, with Firmicutes containing the greatest diversity of the phylotypes. In the crude-oil- and large-insoluble-particle-associated communities, a Methanosaeta-related phylotype dominated the archaeal sequences, whereas hydrogenotrophic methanogens occupied a major portion of sequences in the library of the formation-water-associated community. The crude-oil associated bacterial community showed the largest diversity, containing 35 phylotypes, 16 of which were not detected in the other bacterial communities. Thus, although the populations associated with the reservoir-fluid components largely shared common phylogenetic context, a specific fraction of microbial species preferentially attached to the crude oil and insoluble particles. Copyright © 2011 The Society for Biotechnology, Japan. Published by Elsevier B.V. All rights reserved.

  8. 纳米乳化石蜡钻井液在延长低渗油田的应用%Application of Nano-wax emulsion environmental protection drilling fluid in YanChang low permeability oilfield

    Institute of Scientific and Technical Information of China (English)

    李红梅; 李伟; 于小龙; 赵毅; 武骞; 何仲

    2012-01-01

    石蜡纳米乳液与延长低渗油藏常用聚合物钻井液体系有良好的配伍性,可改善体系的流变性,降低滤失量,具有明显的润滑效果和抑制粘土水化膨胀与分散的能力,对岩心损害程度低,油层保护效果好。石蜡纳米乳液在延长油田成功进行了5口井现场试验,结果证明,加入石蜡纳米乳液后,井壁无坍塌,起下钻畅通,完井电测及下套管作业顺利,钻井时效提高,油气产量高,环保效果好。石蜡纳米乳液钻井液适用于延长油田定向井的钻井施工,可在延长油田推广使用。%Nano-wax emulsion has good compatibility with polymer drilling fluid used in YanChang low permeability reservoir. It could improve the rheological characteristic, and reduce the filtration loss. It has obvious lubricating effect and clay hydration and dispersion inhibition ability. It could reduce the core damage and protect the reservoir. Nano-wax emulsion has been successfully applied in 5 wells in Yanchang oilfield. Results showed that, adding nano-wax emulsion, wellhore was stable, tripping was unblocked, electrical measurement and casing worked smoothly, oil production improved, and environmental was protected. Nano-wax emulsion was suitable for YanChang oil field directional wells, and the application should be spread.

  9. 大庆油田提高原油采收率技术综述(英文)%What is After Water Flooding in Daqing Oilfield

    Institute of Scientific and Technical Information of China (English)

    王德民; 廖广志

    2001-01-01

    Many EOR methods have been tested after water flooding in Daqing Oilfield.CO2,natural gas, micellar, microbial, steam, polymer and ASP flooding have been tested in the lab and field (some field tests have been performed). Most of the results are good. CO2、natural gas、micellar are not suitable to be used in Daqing Oilfield. Polymer flooding of pilots and industrial scale have been successful. The results of polymer flooding are related closely to the injection parameters and injection methods. The incremental oil productions are 100 to 140 tons of oil per ton of polymer injected. The oil recovery increased 10% to 14%OOIP. ASP flooding is successful. The cost of chemicals per barrel of incremental oil is $4.0 to $6.2.The incremental recovery is 18% to 20% OOIP over water flooding.Daqing Oilfield;Polymer flooding;ASP flooding

  10. Geological and petrophysical characterization of the Ferron Sandstone for 3-D simulation of a fluvial-deltaic reservoir. Quarterly report, July 1--September 30, 1997

    Energy Technology Data Exchange (ETDEWEB)

    Allison, M.L.

    1997-11-01

    The objective of this project is to develop a comprehensive, interdisciplinary, and quantitative characterization of a fluvial-deltaic reservoir which will allow realistic inter-well and reservoir-scale modeling to be constructed for improved oil-field development in similar reservoirs world-wide. The geological and petrophysical properties of the Cretaceous Ferron Sandstone in east-central Utah will be quantitatively determined. Both new and existing data will be integrated into a three-dimensional representation of spatial variations in porosity, storativity, and tensorial rock permeability at a scale appropriate for inter-well to regional-scale reservoir simulation. Results could improve reservoir management through proper infill and extension drilling strategies, reduction of economic risks, increased recovery from existing oil fields, and more reliable reserve calculations. Two activities continued this quarter as part of the geological and petrophysical characterization of the fluvial-deltaic Ferron Sandstone: (1) evaluation of the Ivie Creek and Willow Springs Wash case-study areas and (2) technology transfer.

  11. 油层保护模糊专家系统的分析与设计%Analysis and design of reservoir protection fuzzy expert system

    Institute of Scientific and Technical Information of China (English)

    张丹; 曹谢东; 魏存挡; 庞扬

    2012-01-01

    保护油层技术是油田勘探开发过程中提高勘探开发效果的重要措施之一.将基于模糊推理技术建立的模糊专家系统原型有机地与油层保护知识相结合,开发的油层保护模糊专家系统,充分利用和集成了人类油层保护专家的经验和研究成果以及实验室数据分析资料,为油层保护工程师提供了各类储层敏感性预测的智能决策支持.%The reservoir protection technology is an important measures of developing the effect of oilfield exploration. Fuzzy expert system prototype based on the theory of fuzzy logic and fuzzy reasoning techniques combines with reservoir protection knowledge, developing of the reservoir protection fuzzy expert system, makes full using and integration experience and research findings of human reservoir protection experts and the laboratory data analysis material. The system provides decision - support measures for various types of reservoir sensitivity prediction.

  12. 查慎行与《长生殿》案%A Study on Zha Shenxing and the Case of Chang Sheng Dian

    Institute of Scientific and Technical Information of China (English)

    李圣华

    2015-01-01

    清代是一个寒士诗大盛的时代,查慎行不愧为康熙朝江湖寒士诗第一家。追溯其江湖寒士之调的形成,《长生殿》案无疑是重要的“催化剂”。《长生殿》案虽起于黄六鸿攻击报复赵执信,但查慎行、洪昇、陈奕培等四门之员“同被吏议”,已决定了这场案事并非专对赵执信而发。将《长生殿》案比连于“南北党争”,悖于史实;将之归于纯粹的“个人意气之争”,虽揭示出事件的偶然性,但又不免将问题简单化。《长生殿》案与康熙中叶士风有着密切的关系,并对文学走向产生了一定的影响。“南查北赵”及洪昇受案事牵连最剧。查慎行未曾进学,其国子生资格来之不易。在这场风波作用下,慎行科举心态、人生道路、诗歌创作都发生明显的变化。在江湖载酒的人生重塑中,慎行养成“山野之性”,从而促成一代江湖寒士之调。%The poetry of poor scholar flourished in the Qing dynasty, and Zha Shenxing was one of the best poetsof his generation. To study the forma-tionof his poetry style of wandering poor scholar, it could be traced to the case of Chang Sheng Dian;Even though the cause of this case was Huan Liuhong attacked Zhao Zhishen for revenge, but Zha Shenxing and Hongsheng and Chen Yipei were also punished, which meant the content was enlarged. The case had no relation with political strugglebetween the South party and the North party. At the same time, it was not an absolute struggleof personal ani-mosity, because it was caused by the fashion ofpresence of ancient scholarsthat was popularin the middle of Kangxi era. Being involved in the case of Chang Sheng Dian not only changed Zha Shenxing's mind-set of taking the imperial examination, but also helped to bring about his poetry style of wan-dering poor scholar.

  13. Formation of source and reservoir rocks in a sequence stratigraphic framework Jameson Land East Greenland

    Energy Technology Data Exchange (ETDEWEB)

    Piasecki, S.; Dam, G.; Hansen, C.F.; Koppelhus, E.B.; Stemmerik, L.; Surlyk, F.

    1996-12-31

    Sedimentological, biostratigraphical and sequence stratigraphical analyses of East Greenland sedimentary successions with significant source and reservoir qualities have resulted in a major increase in the understanding of their depositional conditions, distribution and geometry`s. A biostratigraphical scheme of the Jurassic succession based on spores, pollen and dinoflaggelate cyst has been constructed for correlation and dating of the very detailed sequence stratigraphical units across the North Atlantic Ocean. Middle and Upper Jurassic dinoflaggelate stratigraphy is closely correlated to Boreal ammonite stratigraphy and deviations from the NW-European standard dinocyst stratigraphy have been recorded. The Upper Permian Folvik Creek Group was deposited in a marine, carbonate-dominated depositional system under arid climatic conditions. The organic-rich shales of the Ravnefjeld Formation represents highstand systems tracts. Reservoir rocks were formed by secondary dissolution of carbonates which were exposed during low relativ sea-level and as sandy turbidites deposited in lowstand systems tract. The uppermost Triassic - lowermost Jurassic Kap Stewart Group was deposited in a large rift lake. Organic-rich shales were deposited distally during lake level highstand. Deltaic reservoir sandstones were deposited in lowstand systems tracts as a respond to forced regressin induced by rapid variations in relative lake-level. The overlying marine Jurassic deposits include several sandstone units with reservoir potential representing both lowstand and high stand systems tracts. The organic rich mudstones were only developed as potential source rocks for oil when the deposition was combined with high marine organic production and basinal anoxic conditions e.g. during deposition of the Middle Jurassic Sortehat Formation and the Upper Jurassic Hareelv Formations. Several of the largest oilfields in the North Sea and on the Norwegian shelf have close analogues in the Jurassic

  14. THE SEISMIC REFLECTION MODE OF BED SET PⅠ IN THE WEIXING OILFIELD BASED ON SAND BODY DEVELOPMENT%卫星油田PⅠ层组基于砂体发育的地震反射模式

    Institute of Scientific and Technical Information of China (English)

    张美玲; 李钰; 张士奇; 曾科

    2012-01-01

    卫星油田PⅠ层组为该油田的主力油层组,层组内单砂层厚度较薄、空间连续性差.将PⅠ层组纵向上划分为上、中、下3个组合单元,利用地震波形能够给以较好的反映.测井曲线具备好的沉积微相识别能力,将每个单元里存在河道或河坝砂体定义为砂体发育,不存在的定义为互层发育,考察卫星油田三维地震工区近100口井资料识别的沉积微相与地震波形的对应关系,建立8种地震波砂体反射模式,依据模式可有效推测出卫星油田PⅠ层组勘探空白区的砂体发育状况,为该油田部署有利井位提供技术支撑.%Bed set P I is the main reservoir group in the Weixing Oilfield,characterized by thin thickness of single sand layer and poor spatial continuity. Bed set P I can be divided into 3 composite units,which can be well reflected by the seismic wave shape. Well logs have perfect identification capacity for sedimentary micro-facies. The unit with channel or river dam sand body is defined as sand body development,and that without channel or river dam sand body is assigned to interbed development. The authors investigated the corresponding relationship between sedimentary micro-facies identified by well log data of 100 wells in 3D survey of the Weixing Oilfield and the seismic wave shape and,on such a basis,established S types of sand body reflection mode of seismic wave. According to the mode,sand body development can be derived for the exploration blank area of Bed set PI of the Weixing Olilfield. The results provide technological support for the deployment of favorable well locations.

  15. Analysis of Sheng-Mai-San, a Ginseng-Containing Multiple Components Traditional Chinese Herbal Medicine Using Liquid Chromatography Tandem Mass Spectrometry and Physical Examination by Electron and Light Microscopies.

    Science.gov (United States)

    Cheng, Yung-Yi; Tsai, Tung-Hu

    2016-09-01

    Sheng-Mai-San is a multi-component traditional Chinese herbal preparation. Due to the fact granulated additives, such as starch, carboxymethyl cellulose, lactose and raw herbal powder may alter the content of the bioactive markers in the herbal products, a developed ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) method was used to measure the herbal biomarkers of ginsenoside Rb₁, Rb₂, Rc, Rd, Re, Rg₁, Rh₁, compound K, ophiopogonin D and schizandrin from the Sheng-Mai-San herbal formulation. Besides, scanning electron microscopy (SEM) was used to observe the morphology of the herbal granular powders. Light microscopy with Congo red and iodine-KI reagent staining was used to identify the cellulose fiber and cornstarch added to pharmaceutical herbal products. The swelling power (SP), water solubility index (WSI), and crude fiber analysis were used to determine the contents of cellulose fiber and cornstarch in pharmaceutical herbal products. In this study, we developed a novel skill to assess the quantification of appended cornstarch in pharmaceutical herbal products using Aperio ImageScope software. Compared with the traditional cornstarch analysis, our analysis method is a rapid, simple and conversion process which could be applied to detect the percentage of added cornstarch in unknown powder products. The various range of the herbal content for the five pharmaceutical manufacturers varied by up to several hundreds-fold. The physical examination reveals that the morphology of the herbal pharmaceutical products is rough and irregular with sharp layers. This study provides a reference standard operating procedure guide for the quality control of the Chinese herbal pharmaceutical products of Sheng-Mai-San.

  16. Estimate of heavy metals in soil and streams using combined geochemistry and field spectroscopy in Wan-sheng mining area, Chongqing, China

    Science.gov (United States)

    Song, Lian; Jian, Ji; Tan, De-Jun; Xie, Hong-Bing; Luo, Zhen-Fu; Gao, Bo

    2015-02-01

    Heavy metals contaminated soils and water will become a major environmental issue in the mining areas. This paper intends to use field hyper-spectra to estimate the heavy metals in the soil and water in Wan-sheng mining area in Chongqing. With analyzing the spectra of soil and water, the spectral features deriving from the spectral of the soils and water can be found to build the models between these features and the contents of Al, Cu and Cr in the soil and water by using the Stepwise Multiple Linear Regression (SMLR). The spectral features of Al are: 480 nm, 500 nm, 565 nm, 610 nm, 680 nm, 750 nm, 1000 nm, 1430 nm, 1755 nm, 1887 nm, 1920 nm, 1950 nm, 2210 nm, 2260 nm; The spectral features of Cu are: 480 nm, 500 nm, 610 nm, 750 nm, 860 nm, 1300 nm, 1430 nm, 1920 nm, 2150 nm, 2260 nm; And the spectral features of Cr are: 480 nm, 500 nm, 610 nm, 715 nm, 750 nm, 860 nm, 1300 nm, 1430 nm, 1755 nm, 1920 nm, 1950 nm. With these features, the best models to estimate the heavy metals in the study area were built according to the maximal R2. The R2 of the models of estimating Al, Cu and Cr in the soil and water are 0.813, 0.638, 0.604 and 0.742, 0.584, 0.513 respectively. And the gradient maps of these three types of heavy metals' concentrations can be created by using the Inverse distance weighted (IDW).The gradient maps indicate that the heavy metals in the soil have similar patterns, but in the North-west of the streams in the study area, the contents are of great differences. These results show that it is feasible to predict contaminated heavy metals in the soils and streams due to mining activities by using the rapid and cost-effective field spectroscopy.

  17. Fracture Identification in Honghe Oilfield,Ordos Basin%鄂尔多斯盆地红河油田裂缝识别

    Institute of Scientific and Technical Information of China (English)

    许君玉; 许新

    2016-01-01

    Honghe oilfield is a typical low porosity and low permeability reservoir and the reservoir fractures are developed widely . According to the observation of core and imaging logging data ,there are mostly high‐angle and vertical fractures in the reservoir .They are mostly sinusoid display in imaging . There are two types of response characteristics of fractures in conventional logging curves :① dual induction ,8 laterolog and array induction data are all low ,8 laterolog resistivity log data and dual induction resistivity log data appear to be positive difference ,dual diameters extension is minor ,sonic log data and neutron log data are high ,and density log data are low . ② High dual induction resistivity log data appear to be positive difference ,8 laterolog log data and dual induction data are positive difference in the upper layers and are negative difference in the lower layers .Sonic and density log data are low ,neutron log data are high . Fractures are deviation from the trend line in the R/S curve of variable scale analysis map ,and became approximate line segment .It has been verified by core and imaging data that the method has achieved a high fracture identification rate . Also , the fractures development is predicated and its relationship with single well productivity is discussed . The results show that the single well productivity is improved in the fractures developed formations . Drilling core and image log data show this method has high fracture identification rate .%红河油田为典型的低孔隙度低渗透率油藏,储层裂缝广泛发育。通过岩心观察、成像测井识别等手段对其裂缝特征进行了描述。研究发现该研究区裂缝在岩心上多为高角度裂缝和垂直裂缝,在成像上多为正弦波曲线显示。裂缝在双感应、八侧向和阵列感应测井曲线上均显示低值,八侧向与双感应测井值正差异;双井径微扩径,声波、中子值增大,密度值减小;在

  18. Reservoir geomechanics: new approach to reservoir engineering analysis

    Energy Technology Data Exchange (ETDEWEB)

    Settari, A.; Walters, D.A.; Behie, G.A. [Duke Engineering and Services Inc., Calgary, AB (Canada)

    1999-07-01

    The rock mechanics aspects of reservoir behavior are reviewed, and a description is included of some recent trends in coupled reservoir and strata mechanics modelling. Case histories are summarized which are field applications of these new trends and tools. These case histories include: (1) high rate injection into an oil sand reservoir; (2) compaction modelling of a North Sea reservoir; and (3) brine disposal at a fracturing pressure. Coupled geomechanical modelling is feasible on a full field scale, and it provides flexibility in the degree of coupling and calculational efficiency. The scope of interest in data gathering and characterization must be extended beyond reservoir boundaries because of the coupled modelling approach. This modelling provides results that can be employed in integrated reservoir management that includes reservoir engineering, drilling and completions. Considering the three case histories, coupled modelling can be used for predicting fracture initiation and re-orientation, reservoir compaction and deformations, and enhancement of injectivity due to stress dependent formation properties. Coupled modelling has brought reservoir modelling to a new realistic level and produces significant economic gains. 15 refs., 8 figs.

  19. Characteristics of water breakthrough of horizontal wells in CB Oilfield and its influence factors%CB 油田水平井出水特征及影响因素研究

    Institute of Scientific and Technical Information of China (English)

    唐韵

    2015-01-01

    Aiming at the growing problems of rapid water-cut increasing an d oil production declining in CB Oilfield, analyzing characteristics of water breakthrough of 30 horizontal wells,a method was established to describe water break-through rule by curve pattern of dimensionless cumulative oil production changing with water -cut.Thus,four types of curves were summarized.Combined with reservoir type and driving means,the causes were analyzed.On this basis,the ma-jor influence factors of water breakthrough characteristic for horizontal well,including reservoir exploitation phase,horizon-tal section location,reservoir heterogeneity,liquid producing intensity and sand production conditions were clearly defined, which can provide an important guidance for making countermeasures for stable oil production and water control and opti-mizing design of horizontal wells in similar reservoirs.%针对 CB 油田现阶段水平井含水上升快、产量递减迅速等日益突出的问题,通过对该油田30口水平井出水特征的深入分析,建立以水平井含水率与无因次累计产油量变化曲线形态来判别出水规律,归纳出4种曲线类型,并结合油藏类型、驱动方式分析其成因。在此基础上明确了水平井出水特征及影响因素,影响因素包括油藏开采阶段、水平段位置、储层非均质性、采液强度和出砂状况,并提出针对性控水措施,为同类型油田水平井控水稳油对策的制定与水平井优选优化提供依据。

  20. The Clinical Research on the Important Role for the Elephant Leather on the Sheng Ji Xiang Pi Ointment%生肌象皮膏中象皮作用与地位的临床研究

    Institute of Scientific and Technical Information of China (English)

    李京向; 陈宝元; 阎伯君; 关靖; 薛晓东

    2011-01-01

    Objective: Sheng Ji Xiang Pi Ointment, one of representative drugs of traditional Chinese medicine for external use,which has granulating functions,con treat various boils and sores,particularly to the stage of ulceration------pus and carrion almost vanished, skin and muscle has not growth yet. But wild elephants belong to the protected species and has been clearly prohibited to be killed and traded by the international organization. Then the Sheng Ji Xiang Pi Ointment can not be used any more as a result of no elephant leather. We try to realize the importance of elephant leather on the Sheng Ji Xiang Pi Ointment from the clinical re search. If elephant leather has an important role on the Sheng Ji Xiang Pi Ointment, then we try to make the best substitutes for el ephant leather in the future. Methods: 60 patients of chronic ulcers were randomly divided into two groups (treatment group and control group). Based on the control of blood sugar,infection and blood pressure and other basic treatment,ulcer wound was treated mainly with external treatment. Only when the most carrion had been discharged from the wound, did the two groups of patients are treated with Sheng Ji Xiang Pi Ointment and Sheng Ji Xiang Pi Ointment without elephant leather respectively, recorded in de tail the wound granulation, epithelialization, secretions and the pH of wound. Results :After 30 days, there had significant difference between the two groups(P<0.05)on the clinical effective rate,on the quality and the quantity of wound secretion,on the epitheli al growth and the growth of granulation,on the pH of wound of two groups,on the time when the wound began to secrete pus,grow epithelial and to grow fresh granulation. Conclusion : Elephant leather had an important effect in the Sheng Ji Xiang Pi Ointment and there was significant difference between Sheng Ji Xiang Pi Ointment and the Sheng Ji Xiang Pi Ointment without elephant leather on the clinical research.%目的:生肌象皮膏是具

  1. [Comparative study of theoretical literature on cold pathogenic disease in Wai tai mi yao fang (Arcane Essentials from the Imperial Library) and Tai ping sheng hui fang (Taiping Holy Prescriptions for Universal Relief)].

    Science.gov (United States)

    Zhang, Huirui; Liang, Yongxuan

    2014-09-01

    In the Wai tai mi yao fang (Arcane Essentials from the Imperial Library) compiled in 752, its portion on cold pathogenic disorders embodies the achievements before the mid Tang Dynasty, whereas that in the Tai ping sheng hui fang (Taiping Holy Prescriptions for Universal Relief), compiled in 992 embodies those before the early Song Dynasty. Comparison on the theory of cold disorders in both books reveal that, during the 2 centuries period from mid Tang to early Song Dynasties, the texts as a carrier for the transmission of such theory in both show no distinct changes, but only with minor revisions and improvements.

  2. The Translator’s Subjectivity under George Steiner’s Fourfold Translation Mo-tion Theory-A Case Study on Lin Yutang’s Translation of Fu Sheng Liu Ji

    Institute of Scientific and Technical Information of China (English)

    朱志遥

    2013-01-01

    Since the advent of the cultural turn in translation studies in the 1970s, the focus of translation studies has been shifted to the subjectivity of translators. This paper attempts to make a tentative probe into the translator ’s subjectivity manifested in the translation of Fu Sheng Liu Ji by Shen Fu on the basis of George Steiner’s fourfold translation motion theory, namely“trust”,“aggression”,“incorporation”and“compensation”. By the study, we may obtain scientific understanding of how the translation is shaped by the translator’s subjectivity, thus affirming the importance and necessity of the later in literary translation.

  3. Flexible Microgel Deep Profile System Laboratory Study and Field Application of Gigsen Oilfield-to Nur Block Example%吉格森油田柔性微凝胶深部调驱体系室内研究及现场应用——以淖尔区块为例

    Institute of Scientific and Technical Information of China (English)

    孙千; 李华斌; 黄浩; 牛忠晓; 霍隆军; 吴灿

    2013-01-01

    Flexible microgel dispersing particles (microspheres) oilfield wastewater can be prepared by oilfield wastewater,it is temperature,salinity and low-cost.To the situation about Gigsen Oilfield oil group major reservoirs has wide distribution,large thickness,the share of reserves than major,underground crude oil physical properties in general,the higher the formation temperature,high salinity of the formation water (> 90 000 mg/L),and Launch a analysis of flexible microgel deep profile in Gigsen Oilfield adaptability and field applications.The experimental optional nanometer and micron microspheres both have a good solubility and thermal stability,the micron microspheres are better.Four kinds of microspheres have certain closure,the No.2 microspheroidal particles have a larger residual resistance factor,is 3.09,followed by the microspheres of the No.2,and its residual resistance factor is 1.44.The natural core flooding experiment results show that the flexible microgel flooding has good oil displacement effect,but the size of the microspheres should be in the pore size of 1/8 to 1/3,in order to ensure effective closure.The actual application shows the Gigsen Oilfield carried out flexible microgel deep profile stimulation in various blocks,achieved a better effect of controlling water and stabilizing oil in a certain extent and stage.%柔性微凝胶分散颗粒(微球)可用油田污水配制,具有耐温、耐盐、成本低廉等优点.针对吉格森油田各油组主力油层分布广、厚度大,所占储量比重大,地下原油物性一般,地层温度较高,地层水矿化度高(>90 000 mg/L)这一情况,开展了柔性微凝胶深部调驱在吉格森油田的适应性及现场应用情况分析.实验所选用的纳米级和微米级微球溶解性和热稳定性都较好,微米级微球更好.4种微球均具有一定的封堵性,其中2号微球颗粒的残余阻力系数较大,为3.09,其次为1号微球,其残余阻力系数为1.44.天然岩心的

  4. Geothermal reservoir management

    Energy Technology Data Exchange (ETDEWEB)

    Scherer, C.R.; Golabi, K.

    1978-02-01

    The optimal management of a hot water geothermal reservoir was considered. The physical system investigated includes a three-dimensional aquifer from which hot water is pumped and circulated through a heat exchanger. Heat removed from the geothermal fluid is transferred to a building complex or other facility for space heating. After passing through the heat exchanger, the (now cooled) geothermal fluid is reinjected into the aquifer. This cools the reservoir at a rate predicted by an expression relating pumping rate, time, and production hole temperature. The economic model proposed in the study maximizes discounted value of energy transferred across the heat exchanger minus the discounted cost of wells, equipment, and pumping energy. The real value of energy is assumed to increase at r percent per year. A major decision variable is the production or pumping rate (which is constant over the project life). Other decision variables in this optimization are production timing, reinjection temperature, and the economic life of the reservoir at the selected pumping rate. Results show that waiting time to production and production life increases as r increases and decreases as the discount rate increases. Production rate decreases as r increases and increases as the discount rate increases. The optimal injection temperature is very close to the temperature of the steam produced on the other side of the heat exchanger, and is virtually independent of r and the discount rate. Sensitivity of the decision variables to geohydrological parameters was also investigated. Initial aquifer temperature and permeability have a major influence on these variables, although aquifer porosity is of less importance. A penalty was considered for production delay after the lease is granted.

  5. The Optimization Adjustment of Steam Injection System in Daqing Oilfield%大庆油田注汽系统的优化调整

    Institute of Scientific and Technical Information of China (English)

    边宇超

    2016-01-01

    Jiang 37 block of heavy oil reservoir in Daqing Oilfield use steam stimulation method for mining. At the beginning period, the bottom hole steam quality is low, which has affected the development effect.The analysis of thermal energy consumption in steam in-jection system shows that the consumption of the ground thermal energy is higher. Using high pressure steam separator can improve the boiler export dryness, which can improve the steam quality effectively by reducing the steam quality loss.There needs to insulate the equip-ment in the process of mining, strengthen the inspection of the steam injection system, maintain the damaged insulation layer in the steam injection system regularly. Proper steam injection mode should be selected in the steam injection,which is close to the steam injection to achieve the purpose of saving energy and reducing consumption and increasing the produc-tion capacity.%大庆油田江37区块稠油油藏采用蒸汽吞吐方式进行开采,开采初期井底蒸汽干度低,影响开发效果。通过分析大庆油田注汽系统各环节的热能消耗,得出地面上消耗的热能比较高。通过高压汽水分离器提高锅炉出口干度,降低蒸汽干度损失量,应用球型等干度分配器可实现多口油井注入蒸汽的干度相同;对开采过程中相关的设备进行保温,加强对注汽系统的巡线工作,定期维修注汽系统中损坏的保温层;在注汽方式中,要选择近距离注汽站进行注汽,达到了节能降耗、提高产能的目的。

  6. Produced Fluid Treatment at SAGD Steam Circulation Preheating Stage in Fengcheng Oilfield%风城油田SAGD循环预热采出液处理技术

    Institute of Scientific and Technical Information of China (English)

    霍进; 陈贤; 桑林翔; 陈弘毅; 李学军

    2016-01-01

    Conventional oil demulsifier is ineffective for produced fluid at SAGD steam cir-culation preheating stage in Fengcheng oilfield. The produced fluid flowing into oil process plant leads to water- cut increasing in crude oil and sewage treatment difficulty. With the wide application of SAGD technique in super heavy oil exploitation, produced fluid treat-ment becomes a critical problem to be resolved. The stabilization mechanism of produced fluid was investigated by physical properties analysis,micrographic determination and zeta po-tential measurement, and the colloidal dispersion character of produced fluid was recognized. Based on high efficient treatment agents and process optimization, produced fluid oil- water separation, floating oil dehydration and sewage purification were realized. The process tech-nique that vapor- liquid separation, spraying cooling, oil- water separation, and floating oil recovery for produced fluid treatment was formed, which is an important technical guar-antee for SAGD development and a good reference for similar reservoir development.%在风城油田SAGD循环预热采出液处理中使用常规破乳药剂无法实现油水分离,采出液进入稠油处理站后,易造成净化原油含水升高、脱出污水净化困难.随着超稠油SAGD开发规模的不断扩大,亟待解决循环预热采出液的处理难题.通过物性分析、显微照相和Zeta电位测定等手段研究了循环预热采出液的稳定机理以及循环预热采出液的胶体分散特性,并研制出复合净水药剂进行破胶,结合工艺优化实现了循环预热采出液的油水分离、浮油脱水和污水净化,形成了"汽液分离+喷淋降温+油水分离+浮油回收"的循环预热采出液处理工艺技术.该技术为SAGD规模开发提供了技术保障,为同类油藏的开发提供了借鉴.

  7. Reservoir structures detection and hydrocarbons exploration using wavelet transform method in 2 oil fields in southwestern of Iran

    Science.gov (United States)

    Hassani, H.; Saadatinejad, M. R.

    2012-04-01

    Spectral decomposition provides better methods for quantifying and visualizing subtle seismic features and by decomposing the seismic signal into discrete frequency components, allows the geoscientist to analyze and map features. Through these methods, continuous wavelet transform (CWT) is an effective and widely-applied. It provides a different approach to time-frequency analysis and produces a time-scale map. The application of CWT is extensive and in this paper, we applied two major capacities of CWT in seismic investigations. It operated to detect reservoir structural characteristics and low-frequency shadows below gas reservoirs to develop a producing reservoir and discover a new petroleum reservoir in 2 oilfields in southwestern of Iran successfully. At the first and significant application in reservoir structure study, CWT enabled to providing clear images from kind of structural systems especially to identify hidden structural features such as extensional ruptures and faults for better drilling, injection and recovery operations and be able to increase production of oilfield. According to properties of tectonic events as fault and their effect (velocity diffraction) on seismic signals, it had been observed that CWT results show some discontinuities in location of ruptures and be able to display them more obvious than other spectral results, especially on horizon slices. Then, by picking and interpretation those, we obtain map, kind, strike and deep direction of faults easily. In petroleum exploration case, low-frequency shadows in CWT results appear due to energy attenuation of seismic signal in high frequencies by the presence of gas; this means there are no high frequencies under the gas reservoir. This phenomenon accounts as an indicator and attribute to explore reservoirs containing gas. As the frequency increases, these shadows decrease and finally disappear. The ranges of these shadows are usually between 8 to 20 Hz in gaz and 28 to 35 Hz in oil

  8. Encapsulated microsensors for reservoir interrogation

    Energy Technology Data Exchange (ETDEWEB)

    Scott, Eddie Elmer; Aines, Roger D.; Spadaccini, Christopher M.

    2016-03-08

    In one general embodiment, a system includes at least one microsensor configured to detect one or more conditions of a fluidic medium of a reservoir; and a receptacle, wherein the receptacle encapsulates the at least one microsensor. In another general embodiment, a method include injecting the encapsulated at least one microsensor as recited above into a fluidic medium of a reservoir; and detecting one or more conditions of the fluidic medium of the reservoir.

  9. Reservoir management cost-cutting

    Energy Technology Data Exchange (ETDEWEB)

    Gulati, M.S.

    1996-12-31

    This article by Mohinder S. Gulati, Chief Engineer, Unocal Geothermal Operations, discusses cost cutting in geothermal reservoir management. The reservoir engineer or geoscientist can make a big difference in the economical outcome of a project by improving well performance and thus making geothermal energy more competitive in the energy marketplace. Bringing plants online in less time and proving resources to reduce the cycle time are some of the ways to reduce reservoir management costs discussed in this article.

  10. Encapsulated microsensors for reservoir interrogation

    Science.gov (United States)

    Scott, Eddie Elmer; Aines, Roger D.; Spadaccini, Christopher M.

    2016-03-08

    In one general embodiment, a system includes at least one microsensor configured to detect one or more conditions of a fluidic medium of a reservoir; and a receptacle, wherein the receptacle encapsulates the at least one microsensor. In another general embodiment, a method include injecting the encapsulated at least one microsensor as recited above into a fluidic medium of a reservoir; and detecting one or more conditions of the fluidic medium of the reservoir.

  11. Waste water treatment in Daqing Oilfield%浅谈大庆油田污水处理技术

    Institute of Scientific and Technical Information of China (English)

    刘美欧

    2016-01-01

    It’s necessary to treat waste water before reinjection.This article describes the five techniques developed in the process of waste water treatment in Daqing Oilfield.%采出污水在回注前必须对污水进行处理,本文对大庆油田污水处理过程中形成的五种工艺进行了概述,并提出了存在的问题。

  12. A New Software for Management, Scheduling, and Optimization for the Light Hydrocarbon Pipeline Network System of Daqing Oilfield

    Directory of Open Access Journals (Sweden)

    Yongtu Liang

    2014-01-01

    Full Text Available This paper presents the new software which specifically developed based on Visual Studio 2010 for Daqing Oilfield China includes the most complex light hydrocarbon pipeline network system in Asia, has become a powerful auxiliary tool to manage field data, makes scheduling plans for batching operation, and optimizes pumping plans. Firstly, DMM for recording and managing field data is summarized. Then, the batch scheduling simulation module called SSM for the difficult batch-scheduling issues of the multiple-source pipeline network system is introduced. Finally, SOM, that is Scheduling Optimization Module, is indicated for solving the problem of the pumps being started up/shut-down frequently.

  13. Reservoir Operation to Minimize Sedimentation

    Directory of Open Access Journals (Sweden)

    Dyah Ari Wulandari

    2013-10-01

    Full Text Available The Wonogiri Reservoir capacity decreases rapidly, caused by serious sedimentation problems. In 2007, JICA was proposed a sediment storage reservoir with a new spillway for the purpose of sediment flushing / sluicing from The Keduang River. Due to the change of reservoir storage and change of reservoir system, it requires a sustainable reservoir operation technique. This technique is aimed to minimize the deviation between the input and output of sediments. The main objective of this study is to explore the optimal Wonogiri reservoir operation by minimizing the sediment trap. The CSUDP incremental dynamic programming procedure is used for the model optimization.  This new operating rules will also simulate a five years operation period, to show the effect of the implemented techniques. The result of the study are the newly developed reservoir operation system has many advantages when compared to the actual operation system and the disadvantage of this developed system is that the use is mainly designed for a wet hydrologic year, since its performance for the water supply is lower than the actual reservoir operations.Doi: 10.12777/ijse.6.1.16-23 [How to cite this article:  Wulandari, D.A., Legono, D., and Darsono, S., 2014. Reservoir Operation to Minimize Sedimentation. International Journal of Science and Engineering, 5(2,61-65. Doi: 10.12777/ijse.6.1.16-23] Normal 0 false false false EN-US X-NONE X-NONE

  14. All-optical reservoir computing.

    Science.gov (United States)

    Duport, François; Schneider, Bendix; Smerieri, Anteo; Haelterman, Marc; Massar, Serge

    2012-09-24

    Reservoir Computing is a novel computing paradigm that uses a nonlinear recurrent dynamical system to carry out information processing. Recent electronic and optoelectronic Reservoir Computers based on an architecture with a single nonlinear node and a delay loop have shown performance on standardized tasks comparable to state-of-the-art digital implementations. Here we report an all-optical implementation of a Reservoir Computer, made of off-the-shelf components for optical telecommunications. It uses the saturation of a semiconductor optical amplifier as nonlinearity. The present work shows that, within the Reservoir Computing paradigm, all-optical computing with state-of-the-art performance is possible.

  15. Reservoir geochemistry; Geoquimica de reservatorios

    Energy Technology Data Exchange (ETDEWEB)

    Lopes, Joelma Pimentel; Rangel, Mario Duncan; Morais, Erica Tavares de [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES)], Emails: joelma.lopes@petrobras.com.br, mduncan@petrobras.com.br, ericat@petrobras.com.br; Aguiar, Helen G.M. de [Fundacao GORCEIX, Ouro Preto, MG (Brazil)], E-mail: helenaguiar.GORCEIX@petrobras.com.br

    2008-03-15

    Reservoir Geochemistry has many important practical applications during petroleum exploration, appraisal and development of oil fields. The most important uses are related to providing or disproving connectivity between reservoirs of a particular well or horizon. During exploration, reservoir geochemistry can indicate the direction of oil filling, suggesting the most appropriate places for drilling new wells. During production, studies of variations in composition with time and determination of proportions of commingled production from multiple zones, may also be carried out. The chemical constituents of petroleum in natural reservoirs frequently show measurable compositional variations, laterally and vertically. Due to the physical and chemical nature of petroleum changes with increasing maturity (or contribution of a second source during the filling process), lateral and vertical compositional variations exist in petroleum columns as reservoir filling is complete. Compositional variation can also be introduced by biodegradation or water washing. Once the reservoir is filled, density driven mixing and molecular diffusion tend to eliminate inherited compositional variations in an attempt to establish mechanical and chemical equilibrium in the petroleum column (England, 1990). Based on organic geochemical analysis it is possible to define these compositional variations among reservoirs, and use these data for developing of petroleum fields and for reservoir appraisal. Reservoir geochemistry offers rapid and low cost evaluation tools to aid in understanding development and production problems. Moreover, the applied methodology is relatively simple and gives reliable results, and can be performed routinely in any good geochemical laboratory at a relatively low cost. (author)

  16. Flared natural gas-based onsite atmospheric water harvesting (AWH) for oilfield operations

    Science.gov (United States)

    Wikramanayake, Enakshi D.; Bahadur, Vaibhav

    2016-03-01

    Natural gas worth tens of billions of dollars is flared annually, which leads to resource waste and environmental issues. This work introduces and analyzes a novel concept for flared gas utilization, wherein the gas that would have been flared is instead used to condense atmospheric moisture. Natural gas, which is currently being flared, can alternatively power refrigeration systems to generate the cooling capacity for large scale atmospheric water harvesting (AWH). This approach solves two pressing issues faced by the oil-gas industry, namely gas flaring, and sourcing water for oilfield operations like hydraulic fracturing, drilling and water flooding. Multiple technical pathways to harvest atmospheric moisture by using the energy of natural gas are analyzed. A modeling framework is developed to quantify the dependence of water harvest rates on flared gas volumes and ambient weather. Flaring patterns in the Eagle Ford Shale in Texas and the Bakken Shale in North Dakota are analyzed to quantify the benefits of AWH. Overall, the gas currently flared annually in Texas and North Dakota can harvest enough water to meet 11% and 65% of the water consumption in the Eagle Ford and the Bakken, respectively. Daily harvests of upto 30 000 and 18 000 gallons water can be achieved using the gas currently flared per well in Texas and North Dakota, respectively. In fifty Bakken sites, the water required for fracturing or drilling a new well can be met via onsite flared gas-based AWH in only 3 weeks, and 3 days, respectively. The benefits of this concept are quantified for the Eagle Ford and Bakken Shales. Assessments of the global potential of this concept are presented using data from countries with high flaring activity. It is seen that this waste-to-value conversion concept offers significant economic benefits while addressing critical environmental issues pertaining to oil-gas production.

  17. Hydrogen embrittlement: the game changing factor in the applicability of nickel alloys in oilfield technology

    Science.gov (United States)

    Sarmiento Klapper, Helmuth; Klöwer, Jutta; Gosheva, Olesya

    2017-06-01

    Precipitation hardenable (PH) nickel (Ni) alloys are often the most reliable engineering materials for demanding oilfield upstream and subsea applications especially in deep sour wells. Despite their superior corrosion resistance and mechanical properties over a broad range of temperatures, the applicability of PH Ni alloys has been questioned due to their susceptibility to hydrogen embrittlement (HE), as confirmed in documented failures of components in upstream applications. While extensive work has been done in recent years to develop testing methodologies for benchmarking PH Ni alloys in terms of their HE susceptibility, limited scientific research has been conducted to achieve improved foundational knowledge about the role of microstructural particularities in these alloys on their mechanical behaviour in environments promoting hydrogen uptake. Precipitates such as the γ', γ'' and δ-phase are well known for defining the mechanical and chemical properties of these alloys. To elucidate the effect of precipitates in the microstructure of the oil-patch PH Ni alloy 718 on its HE susceptibility, slow strain rate tests under continuous hydrogen charging were conducted on material after several different age-hardening treatments. By correlating the obtained results with those from the microstructural and fractographic characterization, it was concluded that HE susceptibility of oil-patch alloy 718 is strongly influenced by the amount and size of precipitates such as the γ' and γ'' as well as the δ-phase rather than by the strength level only. In addition, several HE mechanisms including hydrogen-enhanced decohesion and hydrogen-enhanced local plasticity were observed taking place on oil-patch alloy 718, depending upon the characteristics of these phases when present in the microstructure. This article is part of the themed issue 'The challenges of hydrogen and metals'.

  18. A Fuzzy-Logic Theoretic Approach to Modelling Marginal Oilfield Risks

    Directory of Open Access Journals (Sweden)

    Alaneme, Charles Ezemonye

    2013-06-01

    Full Text Available Risk has remained a debilitating enigma against the full realization of marginal oilfield potentials and lack of its contribution to the economy. This stems from the inability on the part of the operators to identify, quantify and apply the risk profile to correctly adjust the return on investments in marginal fields. This study provides a veritable tool that systematically transforms the qualitative risk variables from its linguistic expressions to quantitative functions using fuzzy logic in combination with conventional risk analysis techniques. Accordingly a total of six risk attributes were isolated using Delphi technique. And, in all, 53 risk variables were identified and used to craft a questionnaire scaled with RensisLikerts 5-point attitudinal scale which were subsequently administered to 42 respondents. A computed Kendall Coefficient of Concordance of W = 0.75 and chi-squared value (x2 of 546 which is greater than 27.69 recorded in the statistical table showed an incontrovertible level of agreement among the judges in ranking the variables, hence, a null hypothesis of disconcordance among the judges was rejected at a p-value of 0.01. Again, the study was able to establish that an investment risk level of 0.71 on a scale of 0 to 1 is associated with this Isiekenesi field in the Nigeria Niger Delta, whereupon signifying a snag in the overall return on investment. Further, our results indicate that security of property and personnel pose the greatest challenge to investment in the marginal field of Niger Delta.

  19. Distribution of the indigenous microorganisms and mechanisms of their orientational activation in Daqing Oilfield

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The distribution of indigenous microorganisms was surveyed in Block 1 of Daqing Oilfield. Based on this survey,the indigenous microorganisms in the formation water were activated with different activator systems at the simulated stratum ecological environment. The changes of the number of bacteria of various physiological groups were determined during the process of activation. Also changes of pH value and composition of gas productions were analyzed at the end of culturing. The results showed that the selected block formation water contained a great number of saprophytic bacteria,hydrocarbon-oxidizing bacteria,fermentative bacteria,methane-producing bacteria and sulfate-reducing bacteria. Under the conditions that the growth of sulfate-reducing bacteria was controlled the block had the potential to enhance oil recovery by activating beneficial bacteria. The growth of sulfate-reducing bacteria can be inhibited through the activation of nitrate-reducing bacteria. The number of nitratereducing bacteria reached 106―107 cells/mL,but sulfate-reducing bacteria reached only 0―45 cells/mL in A system. Methane-producing bacteria can be activated by C,D activators. The relative content of biological methane in the light hydrocarbon gas reached 80% in C,D systems. B activator was conducive to the propagation of acid-producing bacteria,so that the pH value of the culture medium decreased from 7.5 to around 5.0. Hydrocarbon-oxidizing bacteria can be activated by various activator systems. There was low molecular light hydrocarbon in gas production according to the analysis of gas chromatograph. According to the content of methane and the number of methane-producing bacteria,methane only can be generated through activating methane-producing bacteria. By choosing different activator systems,various populations of indigenous microorganisms can be activated accordingly.

  20. On the Choice of Transportation Way of the Oilfield Associated Gas in the Offshore Oilfield%海上油田伴生气的运输方式选择

    Institute of Scientific and Technical Information of China (English)

    邵天泽; 王章领; 张重德

    2011-01-01

    The paper discusses the transportation of the oilfield associated gas.In terms of economy and technology,the paper compares the advantages and disadvantages of submarine pipeline transportation,liquefied gas transportation and gas condensation shipping.It is proposed that gas condensation shipping is an economical way for the oilfield associated gas and it can be widely used in Bohai area in China.%针对海上油田伴生气运输问题,从经济和技术两方面,比较分析海下管道运输、船舶液化运输和船舶压缩运输方式的利弊。认为压缩运输方式是处理海上油田伴生气的一种比较经济合理的方式,适合在我国渤海地区加以推广运用。

  1. Reservoir sedimentation; a literature survey

    NARCIS (Netherlands)

    Sloff, C.J.

    1991-01-01

    A survey of literature is made on reservoir sedimentation, one of the most threatening processes for world-wide reservoir performance. The sedimentation processes, their impacts, and their controlling factors are assessed from a hydraulic engineering point of view with special emphasis on mathematic

  2. Reservoir sedimentation; a literature survey

    NARCIS (Netherlands)

    Sloff, C.J.

    1991-01-01

    A survey of literature is made on reservoir sedimentation, one of the most threatening processes for world-wide reservoir performance. The sedimentation processes, their impacts, and their controlling factors are assessed from a hydraulic engineering point of view with special emphasis on mathematic

  3. An improved reservoir oxide cathode

    Science.gov (United States)

    Wang, Xiaoxia; Liao, Xianheng; Luo, Jirun; Zhao, Qinglan

    2005-09-01

    A new type of reservoir oxide cathode has been developed in IECAS. The emission characteristics of the cathode are tested. The results show the new cathode has higher emission current density and better resistance to poisoning at same operating condition compared with those of conventional reservoir oxide cathode.

  4. Reservoir sedimentation; a literature survey

    NARCIS (Netherlands)

    Sloff, C.J.

    1991-01-01

    A survey of literature is made on reservoir sedimentation, one of the most threatening processes for world-wide reservoir performance. The sedimentation processes, their impacts, and their controlling factors are assessed from a hydraulic engineering point of view with special emphasis on

  5. Analysis on the finalized date and first carving time of Wei sheng bao jian (The Precious Mirror of ;Hygiene)%《卫生宝鉴》成书及初刊年代辨析

    Institute of Scientific and Technical Information of China (English)

    温雯婷; 虞舜

    2015-01-01

    The Wei sheng bao jian ( The Precious Mirror of Hygiene) , written by Luo Tianyi should be finished in the spring of 1283. The wrong date of 1281 was a mistake coming from Yanjian’ s Preface, while the complete date of 1343 was a misunderstanding on “Guiwei year of the Zhiyuan reign” in Wan-gyun’ s Preface. The hypothesis that Wei sheng bao jian was first carved in 1294 or before the Tang ye ben cao ( Materia Medica for Decoctions) is also groundless. The book was probably completed, carved and dis-tributed in the same year, or no later than 1307, even if it was not carved in the same year right after its completion.%罗天益所撰《卫生宝鉴》应成书于1283年春。成书于1281年之说,是据《砚坚序》的错误推理;成书于1343年之说,是对《王恽序》“至元癸未”的误解。《卫生宝鉴》初刊于《汤液本草》之前或1294年之说,均不足为据。此书成书当年可能即刊刻行世;即便成书当年没有刊刻,初刊年也不晚于1307年。

  6. Clinical Experience of Professor Zhai Wen-sheng Treatment of Primary IgA Nephropathy%翟文生教授治疗免疫球蛋白A沉积性肾病(IgA nephropathy)的经验

    Institute of Scientific and Technical Information of China (English)

    赵小静

    2011-01-01

    目的:总结翟文生教授治疗原发性免疫球蛋白A沉积性肾病(IgA nephropathy)临床经验.方法:探讨该病的病因病机,提出热、瘀、虚是IgA肾病病机、辨证论治的关键;重视清热解毒利咽、活血化瘀、扶正补虚在治疗中的作用.结果与结论:翟文生教授治疗Isa肾病的经验对临床有重要的指导意义.%Objective:To summarize the clinical experience of professor ZhaiWenSheng treatment of primary IgA nephropathy. Methods:To explore the causes and pathogenesis f the disease,proposed heat, blood stasis, virtual is pathogenesis of IgA nephropathy, syndrome differentiation and treatment key, Attention clearing heat and the pharynx, promoting blood circulation to remove blood stasis, centralizer fill in the treatment of virtual function. Results and Conclusion: Professor ZhaiWenSheng treatment experience of clinical IgA nephropathy have important significance and deserves further study.

  7. Energy Return on Investment (EROI) for Forty Global Oilfields Using a Detailed Engineering-Based Model of Oil Production.

    Science.gov (United States)

    Brandt, Adam R; Sun, Yuchi; Bharadwaj, Sharad; Livingston, David; Tan, Eugene; Gordon, Deborah

    2015-01-01

    Studies of the energy return on investment (EROI) for oil production generally rely on aggregated statistics for large regions or countries. In order to better understand the drivers of the energy productivity of oil production, we use a novel approach that applies a detailed field-level engineering model of oil and gas production to estimate energy requirements of drilling, producing, processing, and transporting crude oil. We examine 40 global oilfields, utilizing detailed data for each field from hundreds of technical and scientific data sources. Resulting net energy return (NER) ratios for studied oil fields range from ≈2 to ≈100 MJ crude oil produced per MJ of total fuels consumed. External energy return (EER) ratios, which compare energy produced to energy consumed from external sources, exceed 1000:1 for fields that are largely self-sufficient. The lowest energy returns are found to come from thermally-enhanced oil recovery technologies. Results are generally insensitive to reasonable ranges of assumptions explored in sensitivity analysis. Fields with very large associated gas production are sensitive to assumptions about surface fluids processing due to the shifts in energy consumed under different gas treatment configurations. This model does not currently include energy invested in building oilfield capital equipment (e.g., drilling rigs), nor does it include other indirect energy uses such as labor or services.

  8. Migration, filling history and geochemical characteristics of Ordovician natural gases in the Tahe Oilfield, Tarim Basin, Northwest China

    Institute of Scientific and Technical Information of China (English)

    WANG Jie; LIU Wenhui; QIN Jianzhong; LIU Keyu; GU Yi

    2009-01-01

    Ordovician natural gases in the Tahe Oilfield are composed predominantly of hydrocarbon gases dominated by methane with a significant amount of heavy hydrocarbon gas component. The non-hydrocarbon gases include N2, CO2 and minor H2S. The Ordovician natural gases are believed to have originated from the same source rocks, and are composite of gases differing in thermal maturity. Carbon dioxide was derived from thermal metamorphism of Ordovician carbonate rocks. The generation of natural gases involves multiple stages from mature normal oil and condensate-associated gas to thermally cracked gas at the maturity to over-maturity stages. In the main part of the Tahe Oilfield, the Ordovician natural gases appear to be filled in two major phases with a typical petroleum-associated gas from southeast to northwest and from east to west in the early stage; and a thermally cracked gas from east to west in the late stage. At the same time, the oil/gas filling boundary has been primarily established between the two stages.

  9. Energy Return on Investment (EROI for Forty Global Oilfields Using a Detailed Engineering-Based Model of Oil Production.

    Directory of Open Access Journals (Sweden)

    Adam R Brandt

    Full Text Available Studies of the energy return on investment (EROI for oil production generally rely on aggregated statistics for large regions or countries. In order to better understand the drivers of the energy productivity of oil production, we use a novel approach that applies a detailed field-level engineering model of oil and gas production to estimate energy requirements of drilling, producing, processing, and transporting crude oil. We examine 40 global oilfields, utilizing detailed data for each field from hundreds of technical and scientific data sources. Resulting net energy return (NER ratios for studied oil fields range from ≈2 to ≈100 MJ crude oil produced per MJ of total fuels consumed. External energy return (EER ratios, which compare energy produced to energy consumed from external sources, exceed 1000:1 for fields that are largely self-sufficient. The lowest energy returns are found to come from thermally-enhanced oil recovery technologies. Results are generally insensitive to reasonable ranges of assumptions explored in sensitivity analysis. Fields with very large associated gas production are sensitive to assumptions about surface fluids processing due to the shifts in energy consumed under different gas treatment configurations. This model does not currently include energy invested in building oilfield capital equipment (e.g., drilling rigs, nor does it include other indirect energy uses such as labor or services.

  10. Analysis of oilfield produced waters and production chemicals by electrospray ionisation multi-stage mass spectrometry (ESI-MSn).

    Science.gov (United States)

    McCormack, P; Jones, P; Hetheridge, M J; Rowland, S J

    2001-10-01

    Large quantities of diverse polar organic chemicals are routinely discharged from oil production platforms in so-called produced waters. The environmental fate of many of these is unknown since few methods exist for their characterisation. Preliminary investigations into the use of multistage electrospray ionisation ion trap mass spectrometry (ESI-MSn) show its potential for the identification and quantification of compounds in specialty oilfield chemicals (corrosion inhibitors, scale inhibitors, biocides and demulsifiers) and produced waters. Multiple stage mass spectrometry (MSn) with both positive and negative ion detection allows high specificity detection and characterisation of a wide range of polar and charged molecules. For example, linear alkylbenzenesulfonates (LAS), alkyldimethylbenzylammonium compounds, 2-alkyl-1-ethylamine-2-imidazolines, 2-alkyl-1-[N-ethylalkylamide]-2-imidazolines and a di-[alkyldimethylammonium-ethyl]ether were all identified and characterised in commercial formulations and/or North Sea oilfield produced waters. The technique should allow the marine environmental effects and fates of some of these polar compounds to be studied.

  11. FRACTURED PETROLEUM RESERVOIRS

    Energy Technology Data Exchange (ETDEWEB)

    Abbas Firoozabadi

    1999-06-11

    The four chapters that are described in this report cover a variety of subjects that not only give insight into the understanding of multiphase flow in fractured porous media, but they provide also major contribution towards the understanding of flow processes with in-situ phase formation. In the following, a summary of all the chapters will be provided. Chapter I addresses issues related to water injection in water-wet fractured porous media. There are two parts in this chapter. Part I covers extensive set of measurements for water injection in water-wet fractured porous media. Both single matrix block and multiple matrix blocks tests are covered. There are two major findings from these experiments: (1) co-current imbibition can be more efficient than counter-current imbibition due to lower residual oil saturation and higher oil mobility, and (2) tight fractured porous media can be more efficient than a permeable porous media when subjected to water injection. These findings are directly related to the type of tests one can perform in the laboratory and to decide on the fate of water injection in fractured reservoirs. Part II of Chapter I presents modeling of water injection in water-wet fractured media by modifying the Buckley-Leverett Theory. A major element of the new model is the multiplication of the transfer flux by the fractured saturation with a power of 1/2. This simple model can account for both co-current and counter-current imbibition and computationally it is very efficient. It can be orders of magnitude faster than a conventional dual-porosity model. Part II also presents the results of water injection tests in very tight rocks of some 0.01 md permeability. Oil recovery from water imbibition tests from such at tight rock can be as high as 25 percent. Chapter II discusses solution gas-drive for cold production from heavy-oil reservoirs. The impetus for this work is the study of new gas phase formation from in-situ process which can be significantly

  12. Chalk as a reservoir

    DEFF Research Database (Denmark)

    Fabricius, Ida Lykke

    , and the best reservoir properties are typically found in mudstone intervals. Chalk mudstones vary a lot though. The best mudstones are purely calcitic, well sorted and may have been redeposited by traction currents. Other mudstones are rich in very fine grained silica, which takes up pore space and thus...... stabilizes chemically by recrystallization. This process requires energy and is promoted by temperature. This recrystallization in principle does not influence porosity, but only specific surface, which decreases during recrystallization, causing permeability to increase. The central North Sea is a warm...... intervals are to some extent cemented and cannot compact mechanically at realistic effective stresses and only deform elastically. All chalk intervals though, may react by fracturing to changes in shear stress. So where natural fractures are not prevalent, fractures may be generated hydraulically. Fractures...

  13. Reasons for reservoir effect variability

    DEFF Research Database (Denmark)

    Philippsen, Bente

    2013-01-01

    Freshwater reservoir effects can be large and highly variable. I will present my investigations into the short-term variability of the freshwater reservoir effect in two Northern German rivers. The samples analysed in this study were collected between 2007 and 2012. Reservoir ages of water samples......, aquatic plants and fish from the rivers Alster and Trave range between zero and about 3,000 radiocarbon years. The reservoir age of water DIC depends to a large extent on the origin of the water and is for example correlated with precipitation amounts. These short-term variations are smoothed out in water...... plants. Their carbon should represent an average value of the entire growth season. However, there are large reservoir age variations in aquatic plants and animals as well. These can best be explained by the multitude of carbon sources which can be utilized by aquatic organisms, and which have...

  14. Gravity observations for hydrocarbon reservoir monitoring

    NARCIS (Netherlands)

    Glegola, M.A.

    2013-01-01

    In this thesis the added value of gravity observations for hydrocarbon reservoir monitoring and characterization is investigated. Reservoir processes and reservoir types most suitable for gravimetric monitoring are identified. Major noise sources affecting time-lapse gravimetry are analyzed. The

  15. In vivo pharmacokinetic comparisons of ferulic acid and puerarin after oral administration of monomer, medicinal substance aqueous extract and Nao-De-Sheng to rats

    Directory of Open Access Journals (Sweden)

    Zhen Ouyang

    2012-01-01

    Full Text Available Background: Nao-De-Sheng decoction (NDS, a traditional Chinese medicine (TCM prescription containing Radix puerariae lobatae, Floscarthami, Radix et Rhizoma Notoginseng, Rhizoma chuanxiong and Fructus crataegi, is effective in the treatment of cerebral arteriosclerosis, ischemic cerebral stroke and apoplexy linger effect. Ferulic acid and puerarin are the main absorbed effective ingredients of NDS. Objective: To assess the affection of other components in medical material and compound recipe compatibility on the pharmacokinetics of ferulaic acid and puerarin, of ferulic acid from the monomer Rhizoma chuanxiong aqueous extract and NDS were studied. And pharmacokinetics comparisons of puerarin from the monomer Radix puerariae extract and NDS decoction were investigated simultaneously. Materials and Methods: At respective different time points after oral administration of the monomer, medicinal substance aqueous extract and NDS at the same dose in rats, plasma concentrations of ferulic acid and puerarin in rats were determined by RP-HPLC, and the main pharmacokinetic parameters were estimated with 3P97 software. Results: The plasma concentration-time curves of ferulaic acid and puerarin were both best fitted with a two-compartment model. AUC 0−t, AUC 0→∞ , Tmax , and Cmax of ferulic acid in the monomer and NDS decoction were increased significantly (P < 0.05 compared with that in Rhizoma chuanxiong aqueous extract. And statistically significant increase (P < 0.05 in pharmacokinetic parameters of puerarin including AUC 0−t, AUC 0→∞ , CL, Tmax and Cmax were obtained after oral administration of puerarin monomer compared with Radix puerariae extract. Although the changes of AUC 0−t, AUC 0→∞ and CL had no statistically significant, Cmax of puerarin in NDS was increased remarkably (P < 0.05 compared with that in single puerarin. Conclusions: Some ingredients of Rhizoma chuanxiong and Radix puerariae may be suggested to remarkably

  16. Unique Mechanisms of Sheng Yu Decoction (聖愈湯 Shèng Yù Tang on Ischemic Stroke Mice Revealed by an Integrated Neurofunctional and Transcriptome Analysis

    Directory of Open Access Journals (Sweden)

    Yu-Chang Hou

    2013-10-01

    Full Text Available Sheng Yu Decoction (聖愈湯 Shèng Yù Tang; SYD is a popular traditional Chinese medicine (TCM remedy used in treating cardiovascular and brain-related dysfunction clinically; yet, its neuroprotective mechanisms are still unclear. Here, mice were subjected to an acute ischemic stroke to examine the efficacy and mechanisms of action of SYD by an integrated neurofunctional and transcriptome analysis. More than 80% of the mice died within 2 days after ischemic stroke with vehicle treatment. Treatments with SYD (1.0 g/kg, twice daily, orally or p.o. and recombinant thrombolytic tissue plasminogen activator (rt-PA; 10 mg/kg, once daily, intravenously or i.v. both significantly extended the lifespan as compared to that of the vehicle-treated stroke group. SYD successfully restored brain function, ameliorated cerebral infarction and oxidative stress, and significantly improved neurological deficits in mice with stroke. Molecular impact of SYD by a genome-wide transcriptome analysis using brains from stroke mice showed a total of 162 out of 2081 ischemia-induced probe sets were significantly influenced by SYD. Mining the functional modules and genetic networks of these 162 genes revealed a significant upregulation of neuroprotective genes in Wnt receptor signaling pathway (3 genes and regulation of cell communication (7 genes and downregulation of destructive genes in response to stress (13 genes and in the induction of inflammation (5 genes, cytokine production (4 genes, angiogenesis (3 genes, vasculature (6 genes and blood vessel (5 genes development, wound healing (7 genes, defense response (7 genes, chemotaxis (4 genes, immune response (7 genes, antigen processing and presenting (3 genes, and leukocyte-mediated cytotoxicity (2 genes by SYD. Our results suggest that SYD could protect mice against ischemic stroke primarily through significantly downregulating the damaging genes involved in stress, inflammation, angiogenesis, blood vessel

  17. STUDY ON INTENSIFYING THE PROCESS OF SHENGLI VACUUM RESIDUE THERMAL CRACKING%胜利减压渣油强化热转化过程的研究

    Institute of Scientific and Technical Information of China (English)

    马力; 侯焕娣; 王子军

    2012-01-01

    在实验室小型评价装置上考察复合型增液剂L对胜利减压渣油热转化反应的影响.研究结果表明,增液剂L使热转化液体产物收率增加、焦炭和干气产率降低.增加的液体产物主要是蜡油馏分,其组成主要是3环以上的多环芳烃,说明增液剂可促进残渣油和重质生成油分子多环芳烃结构的烷基侧链和多环芳烃结构之间桥链的断裂,使3~4环的多环芳烃能够及时从反应器逸出而成为液体产品.气体产物中C3、C4烃收率增加,C1、C2烃收率减少,表明增液剂L改变了原料烃的热裂化方式.%The thermal cracking of Shengli vacuum residue using a complex additive L to intensify liquid yield was studied by a lab-scale evaluation device. Test results demonstrate that using additive L, the liquid yield of thermal cracking can be increased, coke and dry gas yields decrease. The increased liquid product is mainly VGO fraction composed of more than 3-ring aromatic hydrocarbons, which indicates that the presence of additive L accelerates the cracking of alkyl side chains of polycyclic aromatics, as well as the bridge chains connected polycyclic rings, and furthermore, the obtained 3—4 rings aromatics can be escaped from the reaction system in time to form liquid product. Gas composition data show that in the gas product, the contents of methane, ethane and ethylene decrease, the contents of propane, propylene, butane and butylenes increase, which indicates that the presence of additive L may change the reaction pathway of hydrocarbons thermal cracking.

  18. Water resources review: Ocoee reservoirs, 1990

    Energy Technology Data Exchange (ETDEWEB)

    Cox, J.P.

    1990-08-01

    Tennessee Valley Authority (TVA) is preparing a series of reports to make technical information on individual TVA reservoirs readily accessible. These reports provide a summary of reservoir purpose and operation; physical characteristics of the reservoir and watershed; water quality conditions; aquatic biological conditions; and designated, actual and potential uses of the reservoir and impairments of those use. This reservoir status report addressed the three Ocoee Reservoirs in Polk County, Tennessee.

  19. Analysis of real-time reservoir monitoring : reservoirs, strategies, & modeling.

    Energy Technology Data Exchange (ETDEWEB)

    Mani, Seethambal S.; van Bloemen Waanders, Bart Gustaaf; Cooper, Scott Patrick; Jakaboski, Blake Elaine; Normann, Randy Allen; Jennings, Jim (University of Texas at Austin, Austin, TX); Gilbert, Bob (University of Texas at Austin, Austin, TX); Lake, Larry W. (University of Texas at Austin, Austin, TX); Weiss, Chester Joseph; Lorenz, John Clay; Elbring, Gregory Jay; Wheeler, Mary Fanett (University of Texas at Austin, Austin, TX); Thomas, Sunil G. (University of Texas at Austin, Austin, TX); Rightley, Michael J.; Rodriguez, Adolfo (University of Texas at Austin, Austin, TX); Klie, Hector (University of Texas at Austin, Austin, TX); Banchs, Rafael (University of Texas at Austin, Austin, TX); Nunez, Emilio J. (University of Texas at Austin, Austin, TX); Jablonowski, Chris (University of Texas at Austin, Austin, TX)

    2006-11-01

    The project objective was to detail better ways to assess and exploit intelligent oil and gas field information through improved modeling, sensor technology, and process control to increase ultimate recovery of domestic hydrocarbons. To meet this objective we investigated the use of permanent downhole sensors systems (Smart Wells) whose data is fed real-time into computational reservoir models that are integrated with optimized production control systems. The project utilized a three-pronged approach (1) a value of information analysis to address the economic advantages, (2) reservoir simulation modeling and control optimization to prove the capability, and (3) evaluation of new generation sensor packaging to survive the borehole environment for long periods of time. The Value of Information (VOI) decision tree method was developed and used to assess the economic advantage of using the proposed technology; the VOI demonstrated the increased subsurface resolution through additional sensor data. Our findings show that the VOI studies are a practical means of ascertaining the value associated with a technology, in this case application of sensors to production. The procedure acknowledges the uncertainty in predictions but nevertheless assigns monetary value to the predictions. The best aspect of the procedure is that it builds consensus within interdisciplinary teams The reservoir simulation and modeling aspect of the project was developed to show the capability of exploiting sensor information both for reservoir characterization and to optimize control of the production system. Our findings indicate history matching is improved as more information is added to the objective function, clearly indicating that sensor information can help in reducing the uncertainty associated with reservoir characterization. Additional findings and approaches used are described in detail within the report. The next generation sensors aspect of the project evaluated sensors and packaging

  20. Data requirements and acquisition for reservoir characterization

    Energy Technology Data Exchange (ETDEWEB)

    Jackson, S.; Chang, Ming Ming; Tham, Min.

    1993-03-01

    This report outlines the types of data, data sources and measurement tools required for effective reservoir characterization, the data required for specific enhanced oil recovery (EOR) processes, and a discussion on the determination of the optimum data density for reservoir characterization and reservoir modeling. The two basic sources of data for reservoir characterization are data from the specific reservoir and data from analog reservoirs, outcrops, and modern environments. Reservoir data can be divided into three broad categories: (1) rock properties (the container) and (2) fluid properties (the contents) and (3)interaction between reservoir rock and fluid. Both static and dynamic measurements are required.

  1. Potential threat of heavy metals in re-suspended dusts on building surfaces in oilfield city

    Science.gov (United States)

    Kong, Shaofei; Lu, Bing; Bai, Zhipeng; Zhao, Xueyan; Chen, Li; Han, Bin; Li, Zhiyong; Ji, Yaqin; Xu, Yonghai; Liu, Yong; Jiang, Hua

    2011-08-01

    30 re-suspended dust samples were collected from building surfaces of an oilfield city, then re-suspended through PM 2.5, PM 10 and PM 100 inlets and analyzed for 10 metals including V, Cr, Mn, Co, Ni, Cu, Zn, As, Cd and Pb by inductively coupled plasma-mass spectroscopy. Metals concentrations in different fractions and locations were studied. Metals sources were identified by cluster and primary component analysis. The potential risk to human health was assessed by human exposure model. Results showed that Zn, Mn, Pb and Cu were higher in all the three fractions. V, Cr, Mn and Co ranged close to the background values of Chinese soil indicating that they were mainly from crustal materials. Concentrations of Zn, Mn, Pb, V, Cr, Ni, Co and Cd were higher in old district than that in new district for the three fractions. The PM 2.5/PM 10, PM 10/PM 100 and PM 2.5/PM 100 ratios were higher for Zn, Cd, Cu, Pb, Ni, As and Cr (all higher than 1.0), and lower for Co, Mn and V (all less than or close to 1.0) which meant that anthropologic sources associated metals were more easily accumulated in finer particles than metals from crustal materials. Spatial variations indicated that the ten metals peaked at surroundings near railway station, gas stations, industrial boilers and machine manufacturing plant implying the influence of local vehicle emission, fossil fuel combustion and industrial activities as well as crustal materials which was verified by cluster analysis and primary component analysis results. Ingestion of dust particles appeared to be the main route of exposure to re-suspended dust. Hazard Indexes of As were both highest for children and adult which could be a potential threat to human health for non-cancer effect and it also exhibited the highest values for cancer effect as 1.01E-06, 7.04E-07 and 7.21E-07 for PM 2.5, PM 10 and PM 100, respectively.

  2. A reservoir simulation approach for modeling of naturally fractured reservoirs

    Directory of Open Access Journals (Sweden)

    H. Mohammadi

    2012-12-01

    Full Text Available In this investigation, the Warren and Root model proposed for the simulation of naturally fractured reservoir was improved. A reservoir simulation approach was used to develop a 2D model of a synthetic oil reservoir. Main rock properties of each gridblock were defined for two different types of gridblocks called matrix and fracture gridblocks. These two gridblocks were different in porosity and permeability values which were higher for fracture gridblocks compared to the matrix gridblocks. This model was solved using the implicit finite difference method. Results showed an improvement in the Warren and Root model especially in region 2 of the semilog plot of pressure drop versus time, which indicated a linear transition zone with no inflection point as predicted by other investigators. Effects of fracture spacing, fracture permeability, fracture porosity, matrix permeability and matrix porosity on the behavior of a typical naturally fractured reservoir were also presented.

  3. 关于物资管理提效的实践与思考--以胜利油田鲁明公司为例%About Supplies Management Effect of the Practice and Thinking---Luming Company in Shengli Oilfield as an Example

    Institute of Scientific and Technical Information of China (English)

    王世春; 赵艳

    2013-01-01

    Luming company'purchasing cost in line with other production plant .However ,in the process of management , However ,in the process of management ,there are some problems :the procurement cost is high ,difficult to guarantee the quality of goods ,etc .The solution is :Improve the materials information system ,to improve material information management level ,to strengthen the whole process of quality management ,improve the quality of risk control ability ,Specification of bidding procurement business processes ,improve the quality of bidding and framework agreement procurement work ,promote the standardized procurement ,to strengthen the supply source of risk control ,completes the supplier selection and optimization .%胜利油田鲁明油气勘探开发有限公司的采购成本基本与其他采油厂持平,但是在管理过程中暴露了采购成本居高不下,物资质量难以保证等问题。为提升物资管理效益,今后物资管理提效的工作方向主要有完善物资信息系统,提升物资信息化管理程度;加强物资质量全过程管理,提高质量风险控制能力;进一步规范招标采购业务流程,提高招标和框架协议采购工作质量;推进标准化采购;强化供应风险源头控制,做好供应商筛选和优化。

  4. THE SURDUC RESERVOIR (ROMANIA

    Directory of Open Access Journals (Sweden)

    Niculae Iulian TEODORESCU

    2008-06-01

    Full Text Available The Surduc reservoir was projected to ensure more water when water is scarce and to thus provide especially the city Timisoara, downstream of it with water.The accumulation is placed on the main affluent of the Bega river, Gladna in the upper part of its watercourse.The dam behind which this accumulation was created is of a frontal type made of enrochements with a masque made of armed concrete on the upstream part and protected/sustained by grass on the downstream. The dam is 130m long on its coping and a constructed height of 34 m. It is also endowed with spillway for high water and two bottom outlets formed of two conduits, at the end of which is the microplant. The second part of my paper deals with the hydrometric analysis of the Accumulation Surduc and its impact upon the flow, especially the maximum run-off. This influence is exemplified through the high flood from the 29th of July 1980, the most significant flood recorded in the basin with an apparition probability of 0.002%.

  5. Fluid flow monitoring in oilfields using downhole measurements of electrokinetic potential

    Science.gov (United States)

    Jackson, M. D.; Saunders, J. H.; Pain, C. C.

    2006-12-01

    Permanently installed downhole sensors are increasingly being deployed to provide `real-time' reservoir data during hydrocarbon production, which helps to reduce uncertainty in the reservoir description and contributes to reservoir management decisions. Where wells are equipped with inflow control valves (so called `intelligent' wells), it is possible to develop a feedback loop between measurement and control to optimize production. We suggest that measurements of electrokinetic potential during production, using permanently installed downhole electrodes, could be used to detect water encroachment towards an intelligent oil well. Downhole electrodes mounted at the production well on the outside of insulated casing, have been successfully applied in subsurface resistivity surveys during oil production. Similar technology could be used to measure electrokinetic potential. Moreover, recent and ongoing work has changed our understanding of electrokinetic coupling under two-phase conditions. We present the results of numerical simulations of fluid movement during hydrocarbon production, using a new formulation which captures both the changing fluid distributions and the resulting electrical potentials. We suggest that encroaching water causes changes in electrokinetic potential at the production well which could be resolved above background electrical noise; indeed, changes in water saturation could be detected several 10's to 100's of metres away from the well. This contrasts with most other downhole monitoring techniques, which sample only the region immediately adjacent to the wellbore. Signal resolution is improved if the water has a relatively low salinity, and the pressure gradient into the well is large. However, significant uncertainties remain concerning the nature of electrokinetic coupling during the flow of oil and water, particularly in mixed and oil-wet reservoirs.

  6. 江苏油区油藏分类研究及产量变化特征%Reservoir classification and production decline rules of Jiangsu Oilfield

    Institute of Scientific and Technical Information of China (English)

    金忠康

    2015-01-01

    通过引入熵原理来计算各个影响因素的权重进行油藏综合分类.结果表明,流度和每米采油指数对分类结果的影响最大.在此基础上,根据综合指数计算结果对江苏不同类型开发单元进行分类,各类单元对应的采收率也存在明显的差异.从不同开发单元单井产量变化特征分析结果来看,不同开发单元在不同时期投入的油井产量变化也存在着较明显的规律性,可为后期的开发调整、指标预测和年度配产提供参考.

  7. Basic Characteristics and Classification of Hydrocarbon Reservoirs in Jiangsu Oilfield%江苏油田油气藏基本特征及其分类

    Institute of Scientific and Technical Information of China (English)

    朱平

    2001-01-01

    江苏油田经过20多年的勘探,已经发现并开发了20多个油气田,以及一批出油构造和出油点.在第三纪时期苏北盆地经历了坳陷-断陷-坳陷3个发展阶段,形成了多个凹陷,油气田主要分布在高邮凹陷、金湖凹陷和海安凹陷.油气田总体属于复杂小断块群构造,断层多,断块小.受区域构造和气候旋回的影响,发育砂岩、碳酸岩和火山岩等多种储层类型,储层物性与沉积相和地质层位关系密切.油藏具有正常的温度和压力系统,原油性质与油藏所在凹陷及构造位置有关,高邮凹陷的油藏原油性质普遍较好,金湖凹陷次之,海安凹陷最差.在总结油藏基本特征的基础上,选择能综合反映油藏储层性质和原油性质的流度大小把各油藏分成了3种类型.

  8. 丫角油田稠油油藏热采实践与认识%Thermal Recovery of Heavy Oil Reservoir in Yajiao Oilfield

    Institute of Scientific and Technical Information of China (English)

    邱正勇

    2014-01-01

    丫角油田稠油油藏油层薄、物性差,原油粘度高.通过优选相关参数进行热采试验后认为,现有蒸汽吞吐热采工艺技术,能满足丫角油田稠油油藏开采技术要求.但从开采效益方面分析,在现有的技术经济条件下,对丫角油田稠油油藏进行热采开发,经济效益较差.

  9. Reservoir geochemistry of the Tazhong oilfield in the Tarim Basin, China, Part Ⅰ. Geochemical characteristics and genetic classification of crude oils

    Institute of Scientific and Technical Information of China (English)

    ZHANG Min; HUANG Guanghui; HU Guoyi

    2006-01-01

    According to the assemblage characteristics of saturated hydrocarbon biomarkers in crude oils and their geochemical implications, this study has proposed, for the first time, the criteria for the genetic classification of crude oils in the Tazhong area of the Tarim Basin, China. Crude oils from the area studied are classified as three genetic types: type-Ⅰ is characterized by the low contents of C29 norhopane, extremely abundant contents of gammacerane, low contents of rearranged sterane and relatively high contents of regular C28 sterane; the geochemical properties of type-Ⅱ crude oils are opposite to those of type-Ⅰ crude oils; the parameters for type-Ⅲ crude oils are intermediate between type-Ⅰ and type-Ⅱ. Results of oil correlation indicated that type-Ⅰ crude oils were derived from Cambrian-Lower Ordovician hydrocarbon source rocks, type-Ⅱ curde oils originated from Middle-Upper Ordovician hydrocarbon source rocks and type-Ⅲ crude oils are of mixed origin.

  10. 2010 Fresno Reservoir Sedimentation Survey

    Data.gov (United States)

    US Bureau of Reclamation, Department of the Interior — The Bureau of Reclamation (Reclamation) surveyed Fresno Reservoir in June of 2010 to develop a topographic map and compute a storage-elevation relationship...

  11. 2011 Groundhog Reservoir Bathymetric Contours

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The U.S. Geological Survey performed a bathymetric survey of Groundhog Reservoir using a man-operated boat-mounted multibeam echo sounder integrated with a global...

  12. Glendo Reservoir 2003 Sedimenation Survey

    Data.gov (United States)

    US Bureau of Reclamation, Department of the Interior — The Bureau of Reclamation (Reclamation) surveyed Glendo Reservoir in May and July of 2003 and January 2005 to develop a new topographic map and compute a present...

  13. Understanding the True Strimulated Reservoir Volume in Shale Reservoirs

    KAUST Repository

    Hussain, Maaruf

    2017-06-06

    Successful exploitation of shale reservoirs largely depends on the effectiveness of hydraulic fracturing stimulation program. Favorable results have been attributed to intersection and reactivation of pre-existing fractures by hydraulically-induced fractures that connect the wellbore to a larger fracture surface area within the reservoir rock volume. Thus, accurate estimation of the stimulated reservoir volume (SRV) becomes critical for the reservoir performance simulation and production analysis. Micro-seismic events (MS) have been commonly used as a proxy to map out the SRV geometry, which could be erroneous because not all MS events are related to hydraulic fracture propagation. The case studies discussed here utilized a fully 3-D simulation approach to estimate the SRV. The simulation approach presented in this paper takes into account the real-time changes in the reservoir\\'s geomechanics as a function of fluid pressures. It is consisted of four separate coupled modules: geomechanics, hydrodynamics, a geomechanical joint model for interfacial resolution, and an adaptive re-meshing. Reservoir stress condition, rock mechanical properties, and injected fluid pressure dictate how fracture elements could open or slide. Critical stress intensity factor was used as a fracture criterion governing the generation of new fractures or propagation of existing fractures and their directions. Our simulations were run on a Cray XC-40 HPC system. The studies outcomes proved the approach of using MS data as a proxy for SRV to be significantly flawed. Many of the observed stimulated natural fractures are stress related and very few that are closer to the injection field are connected. The situation is worsened in a highly laminated shale reservoir as the hydraulic fracture propagation is significantly hampered. High contrast in the in-situ stresses related strike-slip developed thereby shortens the extent of SRV. However, far field nature fractures that were not connected to

  14. 《神农本草经》木香考%Textual research on Costus root (Aucklandia lappa Decne) in the Sheng nong ben cao jing (Shennong's Classic of Materia Medica)

    Institute of Scientific and Technical Information of China (English)

    李光燕; 王德群; 方士英; 徐茂红

    2014-01-01

    Aucklandia lappa Decne was first recorded in the Sheng nong ben cao jing (Shennong's Classic ofMateria Medica).Through the textual research of herbal literature,it was found that the costus root in the Sheng nong ben cao jing perhaps was not the plant of Aucklandia lappa Decne of Compositae,but the eaglewood or Lignum Aquilasria Resinatum based on the comprehensive judgment of shape,taste,nature,and function etc.In the Sheng nong ben cao jing,it only includes costus root without the title of eaglewood,and Tao Hongjing recorded both herbs together in his Ming yi bie lu (Supplementary Records of Celebrated Physicians),which became a foreshadow of misunderstanding of the later generations.Beginning from the Tang ben cao (Materia Medica of the Tang Dynasty),the costus root was considered as the plant of Auckiandia lappa Decne from the Compostae with its profound influence until now.%中药木香最早记载于《神农本草经》.通过考察多种本草文献,发现《神农本草经》中的木香可能不是现代菊科木香类植物,而是沉香,因为从形态、气味、功效等方面综合判断,沉香与《本神农草经》中的木香相吻合.《神农本草经》中只有“木香”,而无“沉香”,陶弘景将“木香”与“沉香”一并记载于《名医别录》中,为后人的误识埋下了伏笔.自《唐本草》始认为“木香”主要为菊科的木香类草本植物,这种认识一直影响至今.马兜铃科藤本青木香在《唐本草》和《本草图经》等本草著作的“木香”条中均有记载,但不做“木香”药用的主流.

  15. Chickamauga reservoir embayment study - 1990

    Energy Technology Data Exchange (ETDEWEB)

    Meinert, D.L.; Butkus, S.R.; McDonough, T.A.

    1992-12-01

    The objectives of this report are three-fold: (1) assess physical, chemical, and biological conditions in the major embayments of Chickamauga Reservoir; (2) compare water quality and biological conditions of embayments with main river locations; and (3) identify any water quality concerns in the study embayments that may warrant further investigation and/or management actions. Embayments are important areas of reservoirs to be considered when assessments are made to support water quality management plans. In general, embayments, because of their smaller size (water surface areas usually less than 1000 acres), shallower morphometry (average depth usually less than 10 feet), and longer detention times (frequently a month or more), exhibit more extreme responses to pollutant loadings and changes in land use than the main river region of the reservoir. Consequently, embayments are often at greater risk of water quality impairments (e.g. nutrient enrichment, filling and siltation, excessive growths of aquatic plants, algal blooms, low dissolved oxygen concentrations, bacteriological contamination, etc.). Much of the secondary beneficial use of reservoirs occurs in embayments (viz. marinas, recreation areas, parks and beaches, residential development, etc.). Typically embayments comprise less than 20 percent of the surface area of a reservoir, but they often receive 50 percent or more of the water-oriented recreational use of the reservoir. This intensive recreational use creates a potential for adverse use impacts if poor water quality and aquatic conditions exist in an embayment.

  16. Capacity sharing of water reservoirs

    Science.gov (United States)

    Dudley, Norman J.; Musgrave, Warren F.

    1988-05-01

    The concept of a water use property right is developed which does not apply to water volumes as such but to a share of the capacity (not contents) of river storage reservoirs and their inflows. The shareholders can withdraw water from their share over time in accordance with their preferences for stability of water deliveries. The reservoir authority does not manage reservoir releases but keeps record of individual shareholder's withdrawals and net inflows to monitor the quantity of water in each shareholder's capacity share. A surplus of total reservoir contents over the sum of the contents of the individual shareholder's capacity shares will accrue over time. Two different criteria for its periodic distribution among shareholders are compared. A previous paper Dudley (this issue(b)) noted a loss of short-run economic efficiency as reservoir and farm management decision making become separated. This is largely overcome by capacity sharing which allows each user to integrate the management of their portion of the reservoir and their farming operations. The nonattenuated nature of the capacity sharing water rights also promotes long-run economic efficiency.

  17. Reservoir characterization of Pennsylvanian Sandstone Reservoirs. Annual report

    Energy Technology Data Exchange (ETDEWEB)

    Kelkar, M.

    1992-09-01

    This annual report describes the progress during the second year of a project on Reservoir Characterization of Pennsylvanian Sandstone Reservoirs. The report is divided into three sections: (i) reservoir description and scale-up procedures; (ii) outcrop investigation; (iii) in-fill drilling potential. The first section describes the methods by which a reservoir can be characterized, can be described in three dimensions, and can be scaled up with respect to its properties, appropriate for simulation purposes. The second section describes the progress on investigation of an outcrop. The outcrop is an analog of Bartlesville Sandstone. We have drilled ten wells behind the outcrop and collected extensive log and core data. The cores have been slabbed, photographed and the several plugs have been taken. In addition, minipermeameter is used to measure permeabilities on the core surface at six inch intervals. The plugs have been analyzed for the permeability and porosity values. The variations in property values will be tied to the geological descriptions as well as the subsurface data collected from the Glen Pool field. The third section discusses the application of geostatistical techniques to infer in-fill well locations. The geostatistical technique used is the simulated annealing technique because of its flexibility. One of the important reservoir data is the production data. Use of production data will allow us to define the reservoir continuities, which may in turn, determine the in-fill well locations. The proposed technique allows us to incorporate some of the production data as constraints in the reservoir descriptions. The technique has been validated by comparing the results with numerical simulations.

  18. Petroleum reservoir data for testing simulation models

    Energy Technology Data Exchange (ETDEWEB)

    Lloyd, J.M.; Harrison, W.

    1980-09-01

    This report consists of reservoir pressure and production data for 25 petroleum reservoirs. Included are 5 data sets for single-phase (liquid) reservoirs, 1 data set for a single-phase (liquid) reservoir with pressure maintenance, 13 data sets for two-phase (liquid/gas) reservoirs and 6 for two-phase reservoirs with pressure maintenance. Also given are ancillary data for each reservoir that could be of value in the development and validation of simulation models. A bibliography is included that lists the publications from which the data were obtained.

  19. Classification and features of single-well flow units in a carbonate reservoir - Taking the NT oil field at the eastern edge of Pre-Caspian Basin as an example

    Science.gov (United States)

    Fan, Zifei; Wang, Shuqin; Liu, Lingli; Li, Jianxin; Zhao, Wenqi; Sun, Meng

    2017-01-01

    Identifying the carbonate reservoirs has always been a challenge to geological exploration, while reasonable classification of flow units is the bottleneck in this exploitation. While taking the NT oil field at the eastern edge of Pre-Caspian Basin as an example, this paper proposes the classification of flow units into five categories based on previous flow-unit classification theory and actual oilfield features by using the pore throat radius at the mercury injection saturation of 35% as the main judging criterion. In this paper, the features of various flow units have also been analyzed. The type-I flow units, mainly found in dolomite and algal reef limestone reservoirs, have the highest production capacity. Given the existence of corrosion and dolomitization, they are mainly fracture-cave composite reservoirs or fracture pore reservoirs. As far as the type-I flow units are concerned, the flow index is > 1.42 for KT-I stratum and > 1.55 for KT-II stratum. The production capacity and reservoir quality of type-II-IV flow units would decline in turn. The type-V flow units are argillaceous limestone, with a very low production capacity and a flow index being 0.01-0.05 for KT-I and 0.03-0.05 for KT-II.

  20. Optimization of material distribution in oilfield%优化油田物资配送工作

    Institute of Scientific and Technical Information of China (English)

    袁丽

    2015-01-01

    With the rapid development of market economy,the field distribution is the transition from traditional logistics mode to modern distribution system,for oilfield enterprises.A good job in oil field distribution is an important part of the oil field enterprises to ensure production and construction.%随着市场经济的快速发展,油田物资配送正由传统物流模式向现代配送体系逐步转型,对于油田企业来说,做好油田物资配送工作,是油田企业保障生产建设的重要环节.

  1. Reservoir characterization using core, well log, and seismic data and intelligent software

    Science.gov (United States)

    Soto Becerra, Rodolfo

    We have developed intelligent software, Oilfield Intelligence (OI), as an engineering tool to improve the characterization of oil and gas reservoirs. OI integrates neural networks and multivariate statistical analysis. It is composed of five main subsystems: data input, preprocessing, architecture design, graphics design, and inference engine modules. More than 1,200 lines of programming code as M-files using the language MATLAB been written. The degree of success of many oil and gas drilling, completion, and production activities depends upon the accuracy of the models used in a reservoir description. Neural networks have been applied for identification of nonlinear systems in almost all scientific fields of humankind. Solving reservoir characterization problems is no exception. Neural networks have a number of attractive features that can help to extract and recognize underlying patterns, structures, and relationships among data. However, before developing a neural network model, we must solve the problem of dimensionality such as determining dominant and irrelevant variables. We can apply principal components and factor analysis to reduce the dimensionality and help the neural networks formulate more realistic models. We validated OI by obtaining confident models in three different oil field problems: (1) A neural network in-situ stress model using lithology and gamma ray logs for the Travis Peak formation of east Texas, (2) A neural network permeability model using porosity and gamma ray and a neural network pseudo-gamma ray log model using 3D seismic attributes for the reservoir VLE 196 Lamar field located in Block V of south-central Lake Maracaibo (Venezuela), and (3) Neural network primary ultimate oil recovery (PRUR), initial waterflooding ultimate oil recovery (IWUR), and infill drilling ultimate oil recovery (IDUR) models using reservoir parameters for San Andres and Clearfork carbonate formations in west Texas. In all cases, we compared the results from

  2. The value of smart artificial lift technology in mature field operations demonstrated in the Zistersdorf oilfield in Austria

    Energy Technology Data Exchange (ETDEWEB)

    Muessig, S.; Oberndorfer, M.; Rice, D. [Rohoelaufsuchungs-AG, Wien (Austria); Soliman, K. [Montanuniversitaet Leoben (Austria)

    2013-08-01

    Currently, approximately 40% of world oil production comes from mature fields and the tendency is that this will increase with time. A significant portion of operational expenditures in mature oil fields is related to lifting costs including the cost of maintenance of the artificial lift equipment. In many cases additional, unnecessary, costs are incurred due to inadequate control of corrosion and sand production leading to premature failures of the equipment and thus to additional workover operations. In mature fields this can result in a significant loss of reserves when the production has to be abandoned prematurely because workover operations become uneconomic. In order to combat such losses of reserves RAG and its partners have developed fit-for-purpose technologies such as: continuous control of the liquid level in the annulus (i.e. bottom hole flowing pressure), innovative advanced sand control and longer lasting artificial lift equipment. On the basis of the 75 years old Zistersdorf oilfields the value of these developments in artificial lift technology is demonstrated. The Zistersdorf oilfields produce primarily from the compacted and fairly permeable 'Sarmat' sandstone formation which has many layers whereby the higher layers are poorly consolidated. The fields are currently producing from 33 producing wells some 6 900 m{sup 3} (Vn)/d gas and 48 t/d of oil at an average water cut of 97.1%. It will be shown that the implementation of the technologies described in combination with the in-house knowledge and the dedication of the field staff has extended considerably the mean time between failures of the equipment, reduced markedly the average yearly decline rate and thus extended the economic life expectancy of the fields and increased the ultimate recovery significantly.

  3. Surface Modification of Oilfield Alloys by Ultrasonic Impact Peening: UNS N07718, N07716, G41400, and S17400

    Science.gov (United States)

    Singh, Virendra; Marya, Manuel

    2016-01-01

    Ultrasonic impact peening (UIP) is a severe plastic deformation process to induce localized surface hardening combined with compressive residual stresses which therefore extends the useful life of mechanical parts. In this investigation, UIP has been applied to four widespread alloys in use in the oilfields. These include two premium NiCrMo alloys, UNS N07718 (718) and UNS N07716 (625 Plus®), both characterized by satisfactory oilfield performance but lacking hardness and abrasive wear resistance, and two relatively low-cost alloys, UNS G41400 (4140) and UNS S17400 (17-4PH), both limited by their corrosion fatigue. To promote comparisons and determine important alloy parameters for successful UIP, all four alloys were carefully selected so that their respective yield strengths were within relative proximity (~780 to ~910 MPa), and then ultrasonically impact peened under identical conditions. Among major findings from microstructural examinations, micro-hardness indentations, and residual stress measurements, surface topological changes (roughness), alloy microstructural evolution (depth and extent of strain hardening, including mechanical twinning in the NiCrMo alloys), and compressive residual stresses were found to be well correlated. Among all four alloys, the NiCrMo alloys, in particular UNS N07716 was found to be best suited for UIP. This is explained by its FCC austenitic microstructure, relatively low stacking-fault energy (prone to mechanical twinning), and in practical terms high yield strength and high tensile-to-yield strength ratio, both related to its excellent plastic flow behavior under ultrasonic rates of plastic deformation.

  4. Application of geostatistical inversion to thin reservoir prediction%地质统计学反演技术在薄储层预测中的应用

    Institute of Scientific and Technical Information of China (English)

    王香文; 刘红; 滕彬彬; 王连雨

    2012-01-01

    Taking Ml thin reservoir in H-N oilfield,Southern Ecuador,as an example,this paper documents the challenges and problems of thin reservoir prediction and presents relevant techniques and methods to tackle these problems. Based on analysis of geophysical characteristics of reservoirs and surrounding rocks,a geostatistical inversion technique is applied in this case to identify the thin(l -25ft) reservoirs with rapid lateral changes and strong concealment. Sand distribution is refined through correlation between different data volume including seismic interpretation, CSSI( Constrained Sparse Spike Inversion) and geostatistical inversion,and is further checked by non-well, random-wells and newly drilled wells. The accuracy of thin reservoir prediction is greatly enhanced to a vertical resolution up to 5ft. This technique is successfully applied in H-N oilfield and the new drilling data show that all the prediceted thin sand layers are encountered and the drilling coincidence rate is 82%.%以厄瓜多尔南部H-N油田M1层薄储层为例,阐述了研究区M1层储层预测难点和存在问题,提出针对性的储层预测方法技术.经过储层和围岩地球物理特征分析,论证了储层预测条件,确定了运用以地质统计学反演为核心的储层预测技术对该区进行储层预测研究,来解决该区储层薄(1 ~25 ft)、横向变化大、隐蔽性强的薄储层的识别;通过以地震、稀疏脉冲反演、地质统计学反演不同数据体间砂体进行对比分析,精细解释出该区砂体分布;经过无井、盲井和新钻井校验,实现了薄层的高精度预测,提高了预测精度(垂向分辨率达到5ft).该预测结果经过在H-N油田的实际应用和新钻井钻探证实,砂层钻遇率为100%,钻探符合率达82%,实现了该区新井产能的突破.

  5. The Application of Oil Recovery Enhanced by Gas Injection in Tahe Oilfield No.4 District with the Case of TK404 Well%以TK404井为例浅析注气提高采收率在塔河4区的应用

    Institute of Scientific and Technical Information of China (English)

    汤妍冰; 黄江涛

    2013-01-01

    After more than a calendar year round water injection, Tahe oilfield No.4 district Ordovician reservoirs single well unit oil-water interface is continuous lifting of oil, the majority has entered the stage of failure, the remaining oil in the structural highs gathered to form a so-called"attic oil". Based on the theory of gas injection alternate"attic oil", and in order to further enhance the recovery efficiency of Tahe oilfield No.4 district, it carries out chooses nitrogen gas injection development by choosing independent wewing hole structure,better effect for pre-injection and current failed single well unit. At present, gas injection oil recovery is still in the experimental stage in Tahe oilfield No.4 district, only selecting TK404, T415CH, T416 and TK489 well small-scale injection, and taking TK404 well for example, through the optimization ofgas injection, bored wells time, ways of gas injection oil recovery and speed of gas injection, the reasonable methods of gas injection were summed up; and by the analysis of produce dynamic changes condition after gas injection, it obtained the conclusion that gas injection improves oil recovery in Tahe oilfield No.4 district.%  塔河油田4区奥陶系油藏单井单元经过历年多轮次注水替油,油水界面不断抬升,多数已进入失效阶段,剩余油在构造高部位聚集,形成所谓的“阁楼油”。在注气驱替“阁楼油”的理论基础上,为进一步提高塔河4区采收率,选择具有独立缝洞结构,前期注水替油效果较好且目前已失效的单井单元,进行注氮气开发。目前注气采油在塔河4区仍处于实验阶段,仅选取TK404、T415CH、T416及TK489井小范围试注,以TK404井为例,通过对注气量、闷井时间、注气采油方式、注气速度进行优化,总结出合理的注气方法;通过对注气后生产动态变化情况的分析,得出注气提高采收率在塔河4区切实可行的结论。

  6. Fracture Distribution Characteristics within Low-Permeability Reservoirs:Cases Studies from Three Types of Oil-bearing Basins,China

    Institute of Scientific and Technical Information of China (English)

    Zeng Lianbo

    2006-01-01

    The permeability or/and porosity in low-permeability reservoirs mainly depends on fracture system.Wthin this kind of low-permeability reservior, fractures play a very important role on exploration and development. Because there are so many differences, such as basin properties and tectonic characteristics,among the eastern, western and central basins, the types and distribution characteristics of fractures are also obviously different. Quantitative information on fracture distribution is very important. Through the contrastive study of 7 oilfield, the differences and distribution characteristics of fractures in three types of oil-bearing basins are summarized.Due to the different geological conditions and stress state during the formation of fractures, the fracture systems in three types of basins are also different. Fractures are mainly composed of tectonic fractutres related to normal faultes in eastern basins, related to folds and reverse faultes in western basins, and regional fractures which widely distributed not only in outcrops but also at depth of the relatively undeformed strata in central basins. So, besides jointed-fractures, we can often see faulted-fractures similar to normal faults in eastern basins and similar to reverse faults in western basins.According to statistical data, fracture spacing generally has a lognormal distribution and is linearly proportional to layer thickness. The development degree of fractures is controlled by lithology, bed thickness,sedimentary microfacies and faults or folds, etc. The permeability, aperture and connectedness of fractures are related to the modern stress field. Though there are 3-4 sets of fractures in a oilfield, the fractures parallel to the maximum principal stress direction are main for the pattern arrangement of low-permeability reservoirs.

  7. Traditional Chinese medicine compound ShengJinRunZaoYangXue granules for treatment of primary Sj(o)gren's syndrome: a randomized,double-blind, placebo-controlled clinical trial

    Institute of Scientific and Technical Information of China (English)

    Hu Wei; Qian Xian; Guo Feng; Zhang Miaojia; Lyu Chengyin; Tao Juan; Gao Zhong'en

    2014-01-01

    Background Traditional Chinese medical treatment of primary Sj(o)gren's syndrome has advantages over Western medicine in terms of fewer side effects and improved patient conditions.This study was a multicenter,randomized,doubleblind,placebo-controlled clinical trial of the efficacy and safety of ShengJinRunZaoYangXue granules for the treatment of primary Sj(o)gren's syndrome,including the symptoms of dry mouth and dry eye.Methods We undertook a 6-week,double-blind,randomized trial involving 240 patients with primary Sj(o)gren's syndrome at five centers in East China.A computer-generated randomization schedule assigned patients at a 2∶1 ratio to receive either ShengJinRunZaoYangXue granules or placebo once daily.Patients and investigators were blinded to treatment allocation.The primary endpoints were the salivary flow rate,Schirmer test results,and sugar test results.Intention-to-treat and per-protocol analyses were performed.Results All 240 patients were randomly allocated to either the treatment group (n=160,ShengJinRunZaoYangXue granules) or placebo group (n=80) and were included in the intention-to-treat analysis.After program violation and loss to follow-up,a total of 199 patients were included in the per-protocol analysis.At six week,intention-to-treat and per-protocol analyses of the left-eye Schirmer I test results showed an improved difference of 1.36 mm/5 min (95% CI:0.03 to 2.69 mm/5 min) and 1.35 mm/5 min (95% CI:0.04 to 2.73 mm/5 min),respectively,and those of the right-eye Schirmer I test results showed an improved difference of 1.12 mm/5 min (95% CI:0.02 to 2.22 mm/5 min) and 1.12 mm/5 min (95% CI:-0.02 to 2.27 mm/5 min),respectively.There was no significant difference between the two groups before treatment.After treatment,the between-group and within-group before-and-after paired comparison results were statistically significant (P <0.05).Intention-to-treat and per-protocol analyses showed an improved salivary flow rate by 0.04 ml/15

  8. A Novel Nanodrag Reducer for Low Permeability Reservoir Water Flooding: Long-Chain Alkylamines Modified Graphene Oxide

    Directory of Open Access Journals (Sweden)

    Hong Chen

    2016-01-01

    Full Text Available Chemical modification of graphene oxide (GO by grafting hydrophobic chains on the surface has drawn much attention nowadays in the academic world, and it was suggested that modified GO could lead to new functionalized materials with specific structure and different properties. In this paper, modified GO (M-GO were synthesized by chemically grafting alkylamines with varying chain lengths on the graphene oxide surface. Successful grafting of alkylamines was confirmed using Fourier transform infrared (FTIR spectra, X-ray diffraction (XRD, thermogravimetric analysis (TGA, scanning electron microscope (SEM, and Raman spectroscopy measurements. In addition, we investigated the properties of M-GO as nanodrag reducer in low permeability reservoir water flooding. Water contact angle (CA measurements revealed that the hydrophobic nature of GO depended on the chain length of the grafted alkylamines. And flooding experiments showed that the hexadecylamine- and octadecylamine-modified GO had an ability to reduce water injection pressure and improve water-phase permeability of the low permeability reservoirs during water flooding. So the M-GO would have potential applications in oilfield exploitation.

  9. The Emotion of Huaxia Culture in Guan Wo Sheng Fu by Yan Zhitui%《观我生赋》中颜之推的华夏文化情感

    Institute of Scientific and Technical Information of China (English)

    贾国庆

    2015-01-01

    The Family Instructions of Master Yan is the most widely -known book written by Yan Zhitui , but Guan Wo Sheng Fu , another masterpiece of his , is rarely known by the public .The important value and significance of this ode not only lies in its high literary attainments , but more importantly , the theme of the ode reflects scholarsˊcultural emotion during the era when the Northern barbarian tribes ruled Chi-na.Yan Zhituiˊs thoughts, family and personal background deeply affect his national culture complex .In Guan Wo Sheng Fu , Yan Zhitui connects his personal encounter with Huaxia culture , and that is the first time that a Han nationality scholar expressed the emotion that individual fate is closely related to the whole Huaxia culture in literary works .%颜之推最为人所知的乃是其著有《颜氏家训》一书,然另一赋篇名作《观我生赋》却鲜有人注意。此赋的重要价值意义不仅在于其文学造诣很高,更重要的其主题立意反映了在胡人统治中国这种时代大背景下文人的文化情感。颜之推所受思想与其家世和个人背景深深影响着他的民族文化情结。在《观我生赋》中,颜之推把个人遭遇与华夏文化联系在一起,是汉族文人第一次在文学作品中表达个人命运与华夏文化息息相关的情感。

  10. 浅层弱稠油油藏主体开发技术%KEY DEVELOPING TECHNIQUES OF SHALLOW AND LIGHTLY HEAVY OIL RESERVOIR

    Institute of Scientific and Technical Information of China (English)

    程静波

    2012-01-01

    Changchunling Oilfield is shallow low-temperature and low-pressure oil reservoirs discovered in Jilin Oilfield with special characteristics. Because of the low-temperature, low-pressure and poor flowability of the crude oil, the cold damage of wax precipitation is prone to happen in the course of production. That results in low and e-ven no productivity for conventional operations, so the normal production can be seriously influenced and the effective development of the reserves can be limited. In response to this current situation, the laboratory experiments of wax precipitation, physical simulation tests and numerical simulation of thermal recovery are carried out. Integrating with the development results of huff-puff, steam flooding, fire flooding process etc. , hot water flooding is clearly determined to be the key developing technique in Changchunling Oilfield. At the mean time, it has provided valuable experiences for the development of other similar oil reservoirs.%长春岭油田为吉林油田新发现的浅层低温低压油藏.油藏性质表现出特殊的油藏特征,由于油层低温、低压、原油流动性差,开采过程中储层易受析蜡冷伤害,造成常规开采产能低,甚至无产能,严重影响油田正常生产,制约储量有效动用.针对这一现状,对该油藏开展了原油析蜡室内实验、热采物理模拟实验、热采数值模拟研究,结合现场已开展的蒸汽吞吐、蒸汽驱、火驱等多种热采试验的开发效果,明确了热水驱开发为长春岭油田主体开发技术,同时也为其他同类油藏的开发提供了宝贵经验.

  11. Pressure Transient Behavior of Horizontal Well with Time-Dependent Fracture Conductivity in Tight Oil Reservoirs

    Directory of Open Access Journals (Sweden)

    Qihong Feng

    2017-01-01

    Full Text Available This work presents a discussion on the pressure transient response of multistage fractured horizontal well in tight oil reservoirs. Based on Green’s function, a semianalytical model is put forward to obtain the behavior. Our proposed model accounts for fluid flow in four contiguous regions of the tight formation by using pressure continuity and mass conservation. The time-dependent conductivity of hydraulic fractures, which is ignored in previous models but highlighted by recent experiments, is also taken into account in our proposed model. We also include the effect of pressure drop along a horizontal wellbore. We substantiate the validity of our model and analyze the different flow regimes, as well as the effects of initial conductivity, fracture distribution, and geometry on the pressure transient behavior. Our results suggest that the decrease of fracture conductivity has a tremendous effect on the well performance. Finally, we compare our model results with the field data from a multistage fractured horizontal well in Jimsar sag, Xinjiang oilfield, and a good agreement is obtained.

  12. Experimental Study of the Feasibility of Air Flooding in an Ultra-Low Permeability Reservoir

    Directory of Open Access Journals (Sweden)

    Guohui Qu

    2016-09-01

    Full Text Available The development effect of water flooding in an ultra-low permeability reservoir is poor due to its poor physical properties and high shale content, so an experimental study of air flooding which helps to complement energy production was carried out. Based on the Accelerating Rate Calorimeter experimental results, the crude oil of N block in L oilfield can undergo low-temperature oxidation reactions, which are the basic condition for air flooding. Three groups of experimental natural cylinder cores designed for oil displacement, water flooding and air flooding were used respectively, and the relationship between differential pressure, oil recovery, injection capacity with injection volume was investigated. It is observed that the recovery efficiency increased 2.58%, the injection-production pressure difference dropped 60% and the injection capability increased 60% in the experiment of shifting air flooding after water flooding to 75% moisture content, compared with water flooding alone. It has been shown in the results that the recovery efficiency improved sharply more than water flooding, the effect of depressurization and augmented injection was obvious, and the air displacement was thus validated. We suggest that other science and technology workers should perform further tests and verify this result through numerical simulation.

  13. Semi-supervised least squares support vector machine algorithm: application to offshore oil reservoir

    Science.gov (United States)

    Luo, Wei-Ping; Li, Hong-Qi; Shi, Ning

    2016-06-01

    At the early stages of deep-water oil exploration and development, fewer and further apart wells are drilled than in onshore oilfields. Supervised least squares support vector machine algorithms are used to predict the reservoir parameters but the prediction accuracy is low. We combined the least squares support vector machine (LSSVM) algorithm with semi-supervised learning and established a semi-supervised regression model, which we call the semi-supervised least squares support vector machine (SLSSVM) model. The iterative matrix inversion is also introduced to improve the training ability and training time of the model. We use the UCI data to test the generalization of a semi-supervised and a supervised LSSVM models. The test results suggest that the generalization performance of the LSSVM model greatly improves and with decreasing training samples the generalization performance is better. Moreover, for small-sample models, the SLSSVM method has higher precision than the semi-supervised K-nearest neighbor (SKNN) method. The new semisupervised LSSVM algorithm was used to predict the distribution of porosity and sandstone in the Jingzhou study area.

  14. basement reservoir geometry and properties

    Science.gov (United States)

    Walter, bastien; Geraud, yves; Diraison, marc

    2017-04-01

    Basement reservoirs are nowadays frequently investigated for deep-seated fluid resources (e.g. geothermal energy, groundwater, hydrocarbons). The term 'basement' generally refers to crystalline and metamorphic formations, where matrix porosity is negligible in fresh basement rocks. Geothermal production of such unconventional reservoirs is controlled by brittle structures and altered rock matrix, resulting of a combination of different tectonic, hydrothermal or weathering phenomena. This work aims to characterize the petro-structural and petrophysical properties of two basement surface analogue case studies in geological extensive setting (the Albert Lake rift in Uganda; the Ifni proximal margin of the South West Morocco Atlantic coast). Different datasets, using field structural study, geophysical acquisition and laboratory petrophysical measurements, were integrated to describe the multi-scale geometry of the porous network of such fractured and weathered basement formations. This study points out the multi-scale distribution of all the features constituting the reservoir, over ten orders of magnitude from the pluri-kilometric scale of the major tectonics structures to the infra-millimetric scale of the secondary micro-porosity of fractured and weathered basements units. Major fault zones, with relatively thick and impermeable fault core structures, control the 'compartmentalization' of the reservoir by dividing it into several structural blocks. The analysis of these fault zones highlights the necessity for the basement reservoirs to be characterized by a highly connected fault and fracture system, where structure intersections represent the main fluid drainage areas between and within the reservoir's structural blocks. The suitable fluid storage areas in these reservoirs correspond to the damage zone of all the fault structures developed during the tectonic evolution of the basement and the weathered units of the basement roof developed during pre

  15. Application of oil-water discrimination technology in fractured reservoirs using the differences between fast and slow shear-waves

    Science.gov (United States)

    Luo, Cong; Li, Xiangyang; Huang, Guangtan

    2017-08-01

    Oil-water discrimination is of great significance in the design and adjustment of development projects in oil fields. For fractured reservoirs, based on anisotropic S-wave splitting information, it becomes possible to effectively solve such problems which are difficult to deal with in traditional longitudinal wave exploration, due to the similar bulk modulus and density of these two fluids. In this paper, by analyzing the anisotropic character of the Chapman model (2009 Geophysics 74 97-103), the velocity and reflection coefficient differences between the fast and slow S-wave caused by fluid substitution have been verified. Then, through a wave field response analysis of the theoretical model, we found that water saturation causes a longer time delay, a larger time delay gradient and a lower amplitude difference between the fast and slow S-wave, while the oil case corresponds to a lower time delay, a lower gradient and a higher amplitude difference. Therefore, a new class attribute has been proposed regarding the amplitude energy of the fast and slow shear wave, used for oil-water distinction. This new attribute, as well as that of the time delay gradient, were both applied to the 3D3C seismic data of carbonate fractured reservoirs in the Luojia area of the Shengli oil field in China. The results show that the predictions of the energy attributes are more consistent with the well information than the time delay gradient attribute, hence demonstrating the great advantages and potential of this new attribute in oil-water recognition.

  16. Application of Integrated Reservoir management and Reservoir Characterization to Optimize Infill Drilling

    Energy Technology Data Exchange (ETDEWEB)

    B. Pregger; D. Davies; D. Moore; G. Freeman; J. Callard; J.W. Nevans; L. Doublet; R. Vessell; T. Blasingame

    1997-08-31

    Infill drilling if wells on a uniform spacing without regard to reservoir performance and characterization foes not optimize reservoir development because it fails to account for the complex nature of reservoir heterogeneities present in many low permeability reservoirs, and carbonate reservoirs in particular. New and emerging technologies, such as geostatistical modeling, rigorous decline curve analysis, reservoir rock typing, and special core analysis can be used to develop a 3-D simulation model for prediction of infill locations.

  17. Reservoir Protection Technology in China: Research & Application

    Institute of Scientific and Technical Information of China (English)

    Li Qiangui; Wu Juan; Kang Yili

    2006-01-01

    @@ Great development of reservoir protection technology (RPT) has been achieved since 1996, including oil and gas reservoir protection for exploration wells, reservoir protection during underbalanced drilling, protection of fractured tight sandstone gas reservoir, and reservoir protection while increase production and reconstructing, development and enhanced oil recovery (EOR) etc. It has stepped into a new situation with special features and advantage. These technical advancements marked that China's RTP have realized leaps from porous reservoirs to fractured reservoirs,from conventional medium-to-low permeability reservoirs to unconventional reservoirs, from oil and gas producers to exploration wells, and from application mainly in drilling and completion processes to application in stimulation,development, production and EOR processes.

  18. 伊朗雅达油田优快钻井技术%Optimized fast drilling technology for Yadavaran Oilfield of Iran

    Institute of Scientific and Technical Information of China (English)

    侯立中

    2014-01-01

    伊朗雅达油田地质条件复杂,为碳酸盐岩储层,具有高温、高压及多压力系统,并含有高浓度硫化氢及二氧化碳酸性气体。在2001到2003年间施工了5口探井,井深4500~5000 m,普遍钻井存在着机械钻速低、井漏、压差卡钻、高压沥青层侵入等突出问题,钻井周期长,安全快速钻井面临巨大的挑战。文中分析了雅达油田钻完井存在的难点以及优快钻井技术应用方案,包括灰岩地层压力检测技术、非渗透防卡钻井液技术、高效破岩及优选钻井参数、高压沥青层钻井技术为特色的雅达油田安全快速成井配套技术等,这些成果在雅达油田一期的井身结构、钻头选型、钻井提速和钻井液等方面进行了全面应用,平均机械钻速较前期提高40%以上,取得了显著的效益。%Yadavaran Oilfield of Iran has complex geologic conditions; it is a carbonate reservoir with high temperature and high pressure and multiple pressure systems, and contains acidic gases like high concentrations of hydrogen sulfide, carbon dioxide, etc. Five exploration wells with depths of 4 500-5 000 m were drilled from 2001 to 2003, which all experienced outstanding issues of low rate of penetration, mud loss, differential sticking, heavy oil influx, etc. These wells were drilled with long drilling period, and so safe and fast drilling faced great challenge. This paper has analyzed the difficulties in drilling and completion operations and the application scheme of optimized fast drilling technology in the field, including pressure detection technique in limestone formation, non-permeate anti-sticking drilling fluid technology, highly efficient rock breaking and parameters optimization, heavy oil layer drilling technology, etc. These solutions were fully utilized in casing program, bit selection, rate of penetration improvement and drilling fluids, etc., and have achieved remarkable economic benefit with average

  19. Ruthenium-ion-catalyzed oxidation of asphaltenes and oil-source correlation of heavy oils from the Lunnan and Tahe oilfields in the Tarim Basin, NW China

    Institute of Scientific and Technical Information of China (English)

    MA Anlai; ZHANG Shuichang; ZHANG Dajiang; JIN Zhijun; MA Xiaojuan; CHEN Qingtang

    2005-01-01

    The identification of marine source rocks in the Tarim Basin is debated vigorously. The intention of this paper is to investigate the asphaltenes in heavy oils from the Lunnan and Tahe oilfields and Well TD2 with ruthenium-ions-catalyzed oxidation technique (RICO), in order to explore its role in oil-oil and oil-source correlations. The RICO products included n-alkanoic acids, α, ω-di-n-alkanoic acids, branched alkanoic acids, tricyclic terpanoic acids, hopanoic acids, gammacerane carboxylic acid , regular sterane carboxylic acids and 4-methylsterane carboxylic acids. The n-alkyl chains and biomarkers bounded on the asphaltenes were of unsusceptibility to biodegradation. The distribution and absolute concentrations of n-alkanoic acids in the RICO products of heavy oils from the Lunnan and Tahe oilfields are different from those of Well TD2. The biomarkers bounded on the asphaltenes, especially steranes, have a distribution trend similar to that of the counterparts in saturates. The sterane carboxylic acids and 4-methylsterane carboxylic acids in the RICO products of heavy oils from the Lunnan and Tahe oilfields, dominated by C30 sterane and C31 4-methylsterane carboxylic acids, respectively, are significantly different from those of the heavy oils of Well TD2, whose dominating sterane and 4-methylsterane carboxylic acids are C2s sterane and C29 4-methylsterane acids, respectively. The RICO products of the asphaltenes further indicate that the Middle-Upper Ordovic