WorldWideScience

Sample records for casings well

  1. Centralizer for well casing

    International Nuclear Information System (INIS)

    This patent describes an improved centralizer for centering a well casing in a wellbore. It comprises: a first anchor adapted to fit around and be securely fixed to the casing, the first anchor being threaded on its external surface; a first collar adapted to fit around and be threadedly engaged by the first anchor; a second collar adapted to fit around and free to rotate and move axially with respect to the casing; a second anchor adapted to fit around and be securely fixed to the casing spaced from the first anchor and comprising a bearing surface for restraining axial movement of the second collar along the casing; and metallic straps extending between the first collar and the second collar, and being securely fixed to each

  2. 75 FR 23582 - Annular Casing Pressure Management for Offshore Wells

    Science.gov (United States)

    2010-05-04

    ... Recommended Practice (RP) 90. As explained in API RP 90, Section 3, Annular Casing Pressure Management Program... Institute's Recommended Practice for managing annular casing pressure. New regulations are needed because... Continental Shelf lessees to follow best industry practices for wells with sustained casing pressure....

  3. Casing pull tests for directionally drilled environmental wells

    Energy Technology Data Exchange (ETDEWEB)

    Staller, G.E.; Wemple, R.P. [Sandia National Labs., Albuquerque, NM (United States); Layne, R.R. [Charles Machine Works, Inc., Perry, OK (United States)

    1994-11-01

    A series of tests to evaluate several types of environmental well casings have been conducted by Sandia National Laboratories (SNL) and it`s industrial partner, The Charles Machine Works, Inc. (CMW). A test bed was constructed at the CMW test range to model a typical shallow, horizontal, directionally drilled wellbore. Four different types of casings were pulled through this test bed. The loads required to pull the casings through the test bed and the condition of the casing material were documented during the pulling operations. An additional test was conducted to make a comparison of test bed vs actual wellbore casing pull loads. A directionally drilled well was emplaced by CMW to closely match the test bed. An instrumented casing was installed in the well and the pull loads recorded. The completed tests are reviewed and the results reported.

  4. Casing pull tests for directionally drilled environmental wells

    International Nuclear Information System (INIS)

    A series of tests to evaluate several types of environmental well casings have been conducted by Sandia National Laboratories (SNL) and it's industrial partner, The Charles Machine Works, Inc. (CMW). A test bed was constructed at the CMW test range to model a typical shallow, horizontal, directionally drilled wellbore. Four different types of casings were pulled through this test bed. The loads required to pull the casings through the test bed and the condition of the casing material were documented during the pulling operations. An additional test was conducted to make a comparison of test bed vs actual wellbore casing pull loads. A directionally drilled well was emplaced by CMW to closely match the test bed. An instrumented casing was installed in the well and the pull loads recorded. The completed tests are reviewed and the results reported

  5. 30 CFR 250.1608 - Well casing and cementing.

    Science.gov (United States)

    2010-07-01

    ... inch (psi). (3) The lessee shall install casing designed to withstand the anticipated stresses imposed by tensile, compressive, and buckling loads; burst and collapse pressures; thermal effects; and... previous casing string or to the surface. For brine wells, the liner shall be set in salt and lapped...

  6. Reshaping & Path-expanding Techniques for Casing Damaged Well

    Institute of Scientific and Technical Information of China (English)

    Liu He; Ren Zhigang; Wang Xiuli

    2002-01-01

    @@ The damaged casing is a headache in the Xingbei area of Daqing Oil Field,where a total of 1437 casing-damaged wells were found in the recent years.From 1982 to 1998, there were 515 casing-damaged wells in Xingbei area that were put into repair. Of those wells, 238 ones were successfully repaired, 130 ones were stopped before the repairing work was finished and 147 ones were abandoned as useless.The rehabilitation ratio was only 46 percent. Two reasons were found on the basis of analysis. One is that the smaller the casing damaged pathway is, the harder it is to rehabilitate. The other is that the reshaping and path-expanding technique is inadequate to meet the need for repair the small-path casing damaged wells, affecting improvement of the rehabilitation ratio. Therefore, the research has been made on the reshaping and path-expanding technique for the small-path casing damaged wells since 1999.

  7. Investigation of casing connection failure mechanisms in thermal wells

    Energy Technology Data Exchange (ETDEWEB)

    Xie, J. [C-FER Technologies, Edmonton, AB (Canada)

    2009-07-01

    Thermal well technologies use casing strings that consist of casing joints linked by threaded connections that are cemented over the wellbore's length in order to provide structural support and hydraulic isolation to the wellbore. Studies have demonstrated that over 80 per cent of uphole casing failures occur at the casing joint connections, and are caused by thread rupture or structural damage. This study discussed thermal well failures related to casing connection damage. Finite element analyses (FEA) were then conducted to consider various critical load conditions with a generic premium casing connection. The study considered structural integrity losses, fatigue, and leakage during connection installation. Results of the study were then used to optimize casing connection designs. The study showed that thermal cycle and curvature loading can have an impact on the structural and sealing performance of premium connections. Connection structural performance should be evaluated in order to determine appropriate designs for thermal well applications. It was concluded that the connection shoulder region is a critical area for material fatigue failure. 12 refs., 9 figs.

  8. The Effect of Bentonite on External Corrosion of Well Casings

    OpenAIRE

    Orayith, Mohammed

    2012-01-01

    ABSTRACTThe overall goal of this research is concerned with understanding the effects of bentonite on the external corrosion of bare mild steel well casing. Na-bentonite is mainly used in enormous amounts in drilling processes, so it used as the main electrochemical environment surrounding the casing at different condition. The major part of the current study was divided into 3 stages; the first stage is constant current cathodic protection (CP) with a range of 0.0 (Open Circuit Potential) to...

  9. Performance of casings in Cerro Prieto production wells

    Energy Technology Data Exchange (ETDEWEB)

    Dominguez A, B.; Vital B, F.; Bermejo M, F.; Sanchez G, G.

    1981-01-01

    A careful evaluation of different production casings used at Cerro Prieto from 1964 to date has shown that the following casings have yielded particularly impressive results: 7 5/8-in. diameter, J-55, 26 lb/ft; 7 5/8-in. diameter, K-55, 45.3 lb/ft; and 5-in. diameter, K-55, 23.2 lb/ft. These casings differ from others of the same diameter but lighter weight which were also used at the field. The results are favorable in spite of severe construction problems, especially the loss of circulation during cementing operations, which we encountered in some of the wells where these casings were used. The use of gravity-fed fine sand as packing material and the arrangement of the production and intermediate casings were important in avoiding damage due to tension-compression stresses and, above all, damage due to internal or external corrosion over time. This situation is clearly evidenced if we compare the damage to the above casings with that experienced by grade N-80 production casings, especially in a corrosive environment.

  10. Multiphase flow measurement to improve well performance : history cases

    Energy Technology Data Exchange (ETDEWEB)

    Arevalo-Villagran, J.A.; Gutierrez-Acosta, T.; Martinez-Romero, N. [Pemex E and P, Mexico (Mexico)

    2008-07-01

    PEMEX Exploration and Production (PEMEX E and P) is running a key development plan to improve the reservoir management, well productivity and ultimate recovery of all fields in Mexico. Part of this project involves gathering reliable well production data in real time and on a regular basis. PEMEX E and P performed a study of available technologies in well testing in order to select a system that meets the needs of the region while simplifying the field logistics and minimizing environmental impact. The chosen system involved multiphase flow meters (MPFM). This paper detailed the preparation and temporary deployment of MPFM technology for a series of multi-rate well tests that were conducted on low and high gas-liquid ratio (GLR). The paper described the MPFM technology including applications and characteristics. MPFM technology implemented in PEMEX E and P was then outlined. Study cases were presented on the following topics: measurement uncertainties; repeatability test examples; repeatability and comparative test examples; and wellstream behavior cases. Some limitations of multiphase meters and key factors for success and lessons learned were also identified. It was concluded that the use of multiphase flow meters in PEMEX through a turnkey well testing service was a successful option for well testing operations. 8 refs., 6 tabs., 13 figs.

  11. Chemical process for backsurging fluid through well casing perforations

    Energy Technology Data Exchange (ETDEWEB)

    Berkshire, D.C.; Richardson, E.A.; Scheuerman, R.F.

    1980-08-26

    A backsurge of fluid through perforations in a well casing is chemically induced by injecting into the surrounding reservoir a solution which contains (A) nitrogen gas-generating reactants, (B) a reaction-retarding alkaline buffer, and (C) a ph-reducing reactant that is capable of subsequently overriding the buffer, so that a rapid production of gas and heat causes a backsurging of fluid into the wellbore.

  12. Chemical process for backsurging fluid through well casing perforations

    Energy Technology Data Exchange (ETDEWEB)

    Berkshire, D.C.; Richardson, E.A.; Scheuerman, R.F.

    1981-09-15

    A backsurge of fluid through perforations in a well casing is chemically induced by injecting into the surrounding reservoir a solution which contains nitrogen gas-generating reactants, a reaction-retarding alkaline buffer, and a pH-reducing reactant that is capable of subsequently overriding the buffer, so that a rapid production of gas and heat causes a backsurging of fluid into the wellbore.

  13. Casing Pipe Damage Detection with Optical Fiber Sensors: A Case Study in Oil Well Constructions

    OpenAIRE

    Genda Chen; Jun He; Jianping He; Minghua Huang; Zhi Zhou

    2010-01-01

    Casing pipes in oil well constructions may suddenly buckle inward as their inside and outside hydrostatic pressure difference increases. For the safety of construction workers and the steady development of oil industries, it is critically important to measure the stress state of a casing pipe. This study develops a rugged, real-time monitoring, and warning system that combines the distributed Brillouin Scattering Time Domain Reflectometry (BOTDR) and the discrete fiber Bragg grating (FBG) mea...

  14. Sand control in open horizontal wells - case histories and developments

    Energy Technology Data Exchange (ETDEWEB)

    Rovina, P. S. [Petrobras (Brazil); Filho, E. L.

    1998-12-31

    A number of unconventional sand control completion techniques have been adopted by Petrobras to achieve higher productivity, delay gas/water conning, and to support unconsolidated formations in water injection wells in recently discovered new fields in the Amazon forest and in the deep water offshore Campos Basin. Experiences acquired running screens on 23 horizontal open wells are described. Horizontal wells confirmed the expectations in both locations, i;e. in the Amazon forests water conning was delayed, and in the Marlim field productivity increase to three times that of conventional wells. It was also observed that the API threads used in the screen basepipe for horizontal wells with long radius and short open hole section were adequate, but in the new deep water fields where extended reach wells and long open hole section are likely to be common, it is necessary to use premium threads. 2 refs., 1 tab., 5 figs.

  15. Teaching Case: Fitness & Wellness Place Appoints a Chief Information Officer

    Science.gov (United States)

    Rodon, Joan

    2013-01-01

    Fitness and Wellness Place (F&W) is a network of fitness and wellness clubs in Spain and Portugal created in 2009 as a result of a buy-out from a large British operator. In 2009, F&W was operating 15 clubs in Spain and Portugal and by the end of 2011, F&W ran 25 clubs. F&W's rapid growth in the period 2009-11 had become a…

  16. Wellness- joogatyöpajojen tuotekehitys: case ArsMondo

    OpenAIRE

    Koukonen, Heidi; Lintunen, Maiju

    2012-01-01

    Tässä opinnäytetyössä tutkitaan, miten ArsMondo Oy:n joogamatkoja voisi kehittää entistä asiakaslähtöisempään suuntaan tulevaisuudessa. Aihe valittiin, sillä se on erittäin mielenkiintoinen ja ajankohtainen aihe matkailun alalla. ArsMondo on suomalainen kulttuurialan yritys, joka räätälöi kulttuuri- ja liikuntamatkoja Italiaan. Työ rajattiin vain ArsMondo- yrityksen joogamatkoihin Italiassa. Teoreettisessa viitekehyksessä avataan jooga- wellness- matkailun käsite sekä kerrotaan wellness- ...

  17. Synergistic Assessment of Sustained Casing Pressure on Oil Well

    Directory of Open Access Journals (Sweden)

    Darren Wong Vun Nyap

    2013-05-01

    Full Text Available The current research is based on modeling approach, where the objective is to develop a series of computer codes with the reference of existing pressure bleed-off time mathematical models. The results generated from the model are based on the three parameters: temperature, type of gases filled in annulus and depth of well. These three parameters can affect pressure bleed-off time in well’s annulus, with the fixed size of needle valve. Using this model generated from Wolfram Mathematical 8.0, it is enable to notify engineer to receive an early sign of warning if the well is suspected to leakage. Meanwhile, based on the matching process of field data and modeled data, field engineers will be able to aware and determine whether the occurrence of annular pressure is due to thermal induced annular pressure buildup or it is because of leakage in well components. The SCP well will eventually loss in production, caused severe failure in well’s integrity.

  18. Casing Pipe Damage Detection with Optical Fiber Sensors: A Case Study in Oil Well Constructions

    Directory of Open Access Journals (Sweden)

    Zhi Zhou

    2010-01-01

    Full Text Available Casing pipes in oil well constructions may suddenly buckle inward as their inside and outside hydrostatic pressure difference increases. For the safety of construction workers and the steady development of oil industries, it is critically important to measure the stress state of a casing pipe. This study develops a rugged, real-time monitoring, and warning system that combines the distributed Brillouin Scattering Time Domain Reflectometry (BOTDR and the discrete fiber Bragg grating (FBG measurement. The BOTDR optical fiber sensors were embedded with no optical fiber splice joints in a fiber-reinforced polymer (FRP rebar and the FBG sensors were wrapped in epoxy resins and glass clothes, both installed during the segmental construction of casing pipes. In situ tests indicate that the proposed sensing system and installation technique can survive the downhole driving process of casing pipes, withstand a harsh service environment, and remain intact with the casing pipes for compatible strain measurements. The relative error of the measured strains between the distributed and discrete sensors is less than 12%. The FBG sensors successfully measured the maximum horizontal principal stress with a relative error of 6.7% in comparison with a cross multipole array acoustic instrument.

  19. Essential Segmental Myoclonus Responding Well To Fluoxetine A case Report

    Directory of Open Access Journals (Sweden)

    Bhattacharyya K B

    1999-01-01

    Full Text Available We report a case of essential segmental myoclonus a 10 year old girl who presented with continuing movement of both the shoulder girdle muscles for 6 months. The movements were exacerbated with the hands raised above the head or in the outstretched posture and were persisting during sleep. There was no abnormal palatal movement. Additionally there was a rhythmical clicking sound arising from the shoulders that could be felt and ausculated with the stethoscope. CT scan of brain and MRI of cervical spine were non-contributory, EMG showed muscle activates at about 50 per second in the shoulder girdle muscles. Cine-radiography of shoulder joints showed the head of humerus hitting against the spine of the scapula rhythmically. Spinal tap was non-contributory. The diagnosis or essential segmental myoclonus was entertained and the subject with fluoxetine, a selective serotonin reuptake inhibitor with remarkable response. The possible mechanism of action of agents modulating the serotonergic system in the brain for the management of myoclonus has been reviewed and their role suggested.

  20. Assessment of non-destructive testing of well casing,, cement and cement bond in high temperature wells

    Energy Technology Data Exchange (ETDEWEB)

    Knutson, C K; Boardman, C R

    1979-01-01

    Because of the difficulty in bringing geothermal well blowouts under control, any indication of a casing/cement problem should be expeditiously evaluated and solved. There are currently no high temperature cement bond and casing integrity logging systems for geothermal wells with maximum temperatures in excess of 500/sup 0/F. The market is currently insufficient to warrannt the private investment necessary to develop tools and cables capable of withstanding high temperatures. It is concluded that a DOE-funded development program is required to assure that diagnostic tools are available in the interim until geothermal resource development activities are of sufficient magnitude to support developmental work on high temperature casing/cement logging capabilities by industry. This program should be similar to and complement the current DOE program for development of reservoir evaluation logging capabilities for hot wells. The appendices contain annotated bibliographies on the following: high temperature logging in general, cement integrity testing, cosing integrity testing, casing and cement failures, and special and protective treatment techniques. Also included are composite listing of references in alphabetical order by senior author.

  1. Case study : evaluation of oilfield and water well disposal well designs for oil sands facility in northern Alberta, Canada

    Energy Technology Data Exchange (ETDEWEB)

    Champollion, Y.; Gleixner, M.R.; Wozniewicz, J. [Golder Associates Ltd., Calgary, AB (Canada); MacFarlane, W.D.; Skulski, L. [Nexen Canada Ltd., Calgary, AB (Canada)

    2003-07-01

    Large volumes of wastewater disposal capacity will be required for the production of bitumen at the Long Lake Project, located in northeastern Alberta. An unconsolidated sand aquifer is the target formation for disposal. An evaluation of two disposal well designs, perforated casing (standard oil and gas approach), and wire-wound telescopic screen (standard water well approach) was performed. Skin, transmissivity and storability were the hydraulic parameters quantified. Full superposition type curves were used to conduct the transient analysis, along with the use of pressure derivative data. The results from the injection tests revealed that the sand aquifer at the Long Lake Project had suitable aquifer disposal capacity. The test results also revealed that clogging takes place in the vicinity of the wellbore, probably because of suspended solids in the injection water and the degassing effects. The water well design, as opposed to the standard oilfields well, makes provision for less costly re-development during operations, something that might be required if clogging problems occur. 3 refs., 8 figs.

  2. Síndrome de Hay-Wells: relato de caso Hay-Wells syndrome: a case report

    Directory of Open Access Journals (Sweden)

    Dário Júnior de Freitas Rosa

    2010-04-01

    Full Text Available A síndrome de Hay-Wells é uma forma rara de displasia ectodérmica, descrita inicialmente em 1976 por Hay e Wells, de caráter autossômico dominante com expressão variável, composta por anomalias congênitas da pele, cabelos, dentes, unhas e glândulas sudoríparas. Descrevemos o caso de um paciente de 17 anos, filho de pais não consangüíneos, que apresentava anquiloblefaron filiforme adenatum, displasia ectodérmica e fenda palatina ao nascimento, sinais considerados cardinais pela maioria dos autores. Destacamos também a importância do acompanhamento multidiscliplinar dos pacientes.Hay-Wells syndrome is a rare form of ectodermal dysplasia initially described by Hay and Wells in 1976. It is an autosomal dominant disorder with varying forms of expression featuring congenital abnormalities of the skin, hair, teeth, nails and sweat glands. The present report describes the case of a 17-yearold white boy, the son of nonconsanguineous parents, who presented ankyloblepharon filiforme adnatum, ectodermal dysplasia and a cleft palate at birth, which are considered cardinal signs of this syndrome by most authors. We also highlight the importance of implementing multidisciplinary follow-up of these patients.

  3. Environmental assessment and remediation of thermal well casing failures: The Cold Lake experience

    International Nuclear Information System (INIS)

    A thermal well casing failure is a break or leak in the production string of a thermal well. Depending on the circumstances of the event, the fluids leaked may be condensed steam, produced water, oil, or a mixture of all these fluid types. The fluids may be injected into the surrounding oil reservoir, or in upper geologic strata or groundwater zones, or occasionally to the surface. Environmental assessment and mitigation of thermal casing failures is reviewed. Within each impact type (aquifer contamination, atmospheric emission, surface contamination) there are four classes of severity. The remediation requirements of these classes of severity range from minimal to continual, long-term remediation. Statistics relating to thermal well casing failures in the Alberta petroleum industry are presented. A case example is presented of a casing failure event that resulted in a surface spill. Groundwater aquifer assessment to determine the extent of contamination is described. 7 refs., 2 figs., 3 tabs

  4. MONITORING WELL INSTALLATION, PURGING, AND SAMPLING TECHNIQUES. PART 2. CASE HISTORIES

    Science.gov (United States)

    Three case histories are presented to illustrate the problems encountered using some monitoring well installation, purging, and sampling techniques. Hollow-stem augering was found to pose problems during the installation of monitoring wells in terms of potential for cross-contami...

  5. Wellness Coaching Outcomes in a Case Report of a Diabetic Native American Male

    OpenAIRE

    Berna, Jennifer S.

    2013-01-01

    Medically referred wellness coaching clients may present thinking patterns that generate internal resistance to change, including lack of urgency, inadequate incentives, and uncertainty about what they need to do differently. 1 Applying the Wellcoaches (Wellcoaches Corp, Wellesley, Massachusetts) model interventions within a framework of the four domains of learning (cognitive, affective, behavioral, and conative)2 can enhance wellness coaching outcomes. This case report reviews wellness coac...

  6. Plunger lift optimization in horizontal gas wells : case studies and challenges

    Energy Technology Data Exchange (ETDEWEB)

    Sask, D.; Kola, D.; Tuftin [EnCana Corp., Calgary, AB (Canada)

    2010-07-01

    Plunger lift is a proven technique for lifting liquids from vertical gas wells flowing below critical velocity. However, while it has been fairly simple to make plunger lift function in horizontal wells, it has proven to be much more challenging to truly optimize production. Plunger control software development for the Sierra field's horizontal well application has resulted in increased production times and volumes as well as additional operational benefits that reduce down time caused by cold weather and pipeline pigging operations. This paper presented several case studies demonstrating the impact of plunger control software for horizontal wells. It also presented case studies that outlined the operational performance benefits and the performance of various types of plungers in high angle applications. The case studies demonstrated the influence of plunger performance on well bore trajectory and liquid hold up in the horizontal well bore. It was concluded that the efficiency of different styles of plunger can be significantly different in horizontal wells than in vertical wells. 3 refs., 6 figs.

  7. Factors affecting bond cement across casing leak zones in oil and gas wells

    Energy Technology Data Exchange (ETDEWEB)

    Nasr, Mohamed; Edbeib, Said [Al-Fateh University, Tripoli (Libyan Arab Jamahiriya). Dept. of Petroleum Engineering

    2004-07-01

    Casing leaks have been a major concern to the oil industry because of their effect on lowering the production rate in many oil and gas wells. The leaks are the result of deterioration of the casing in the well, which is caused by severe corrosion due to the contact of the casing with high salinity foreign fluid. The objective of this study is to determine the factors influencing the mechanical properties of the hardened cement opposite the casing leak zones. This study is conducted by laboratory measurements of the compressive strength of the hardened cement when the cement slurry was mixed with different percentages of formation water and different concentrations of different cement additives. The results of this study indicate that the compressive strength readings obtained from the cement bond log and the cement evaluation tool against the casing leak zones are lower than those readings recorded in adjacent formations. The low cement compressive strength values observed across casing leak zones are due to the contamination of the cement with saline water present in these formations which, in turn, effects the hardening properties of the cement. The experimental results indicated that the salinity of the formation water when mixed with the cement slurry in the presence of cement additives, decreased the compressive strength of the bond cement and also decreased the thickening time of the cement slurry. It is concluded that casing leaks found in many wells observed in oil fields in Libya were due to the mixing of the cement with high salinity formation water present in the lost circulation zones. The high water salinity in these zones effects the setting time of the cement slurry which, therefore, decreased the hardening properties of the bond cement and caused cracks and channels in the hardened cement across lost circulation zones. (author)

  8. Síndrome de Hay-Wells: relato de caso Hay-Wells syndrome: a case report

    OpenAIRE

    Dário Júnior de Freitas Rosa; Ronaldo Figueiredo Machado; Marcelino Pereira Martins Neto; Alessandra Almeida Montenegro de Sá; Aloísio Gamonal

    2010-01-01

    A síndrome de Hay-Wells é uma forma rara de displasia ectodérmica, descrita inicialmente em 1976 por Hay e Wells, de caráter autossômico dominante com expressão variável, composta por anomalias congênitas da pele, cabelos, dentes, unhas e glândulas sudoríparas. Descrevemos o caso de um paciente de 17 anos, filho de pais não consangüíneos, que apresentava anquiloblefaron filiforme adenatum, displasia ectodérmica e fenda palatina ao nascimento, sinais considerados cardinais pela maioria dos aut...

  9. 26 CFR 1.263(c)-1 - Intangible drilling and development costs in the case of oil and gas wells.

    Science.gov (United States)

    2010-04-01

    ... Intangible drilling and development costs in the case of oil and gas wells. For rules relating to the option to deduct as expenses intangible drilling and development costs in the case of oil and gas wells, see... case of oil and gas wells. 1.263(c)-1 Section 1.263(c)-1 Internal Revenue INTERNAL REVENUE...

  10. Wellness Coaching Outcomes in a Case Report of a Diabetic Native American Male

    Science.gov (United States)

    2013-01-01

    Medically referred wellness coaching clients may present thinking patterns that generate internal resistance to change, including lack of urgency, inadequate incentives, and uncertainty about what they need to do differently.1 Applying the Wellcoaches (Wellcoaches Corp, Wellesley, Massachusetts) model interventions within a framework of the four domains of learning (cognitive, affective, behavioral, and conative)2 can enhance wellness coaching outcomes. This case report reviews wellness coaching outcomes with a 44-year-old single male tribal member of a Midwest Native American tribe who recently had been diagnosed with diabetes. Challenges presented by resistance to change and a discussion of the four domains of learning applied to wellness coaching are also reported. PMID:24278846

  11. Investigation of Accelerated Casing Corrosion in Two Wells at Waste Management Area A-AX

    Energy Technology Data Exchange (ETDEWEB)

    Brown, Christopher F.; Serne, R. Jeffrey; Schaef, Herbert T.; Williams, Bruce A.; Valenta, Michelle M.; Legore, Virginia L.; Lindberg, Michael J.; Geiszler, Keith N.; Baum, Steven R.; Kutnyakov, Igor V.; Vickerman, Tanya S.; Clayton, Ray E.

    2008-09-11

    This report was revised in September 2008 to remove acid-extractable sodium data from Tables 3.13 and 3.14. The sodium data was removed due to potential contamination introduced during the acid extraction process. The rest of the text remains unchanged from the original report issued in August 2005. An overall goal of the Groundwater Performance Assessment Project, led by Pacific Northwest National Laboratory (PNNL) and per guidance in DOE Order 5400.1, includes characterizing and defining trends in the physical, chemical, and biological condition of the environment. To meet these goals, numerous Resource Conservation and Recovery Act (RCRA) monitoring wells have been installed throughout the Hanford Site. In 2003, it was determined that two RCRA monitoring wells (299-E24-19 and 299-E25-46) in Waste Management Area (WMA) A-AX failed due to rapid corrosion of the stainless steel casing over a significant length of the wells. Complete casing corrosion occurred between 276.6 and 277.7 feet below ground surface (bgs) in well 299- E24-19 and from 274.4 to 278.6 feet bgs in well 299-E25-46. CH2M HILL Hanford Group, Inc., asked scientists from PNNL to perform detailed analyses of vadose zone sediment samples collected in the vicinity of the WMA A-AX from depths comparable to those where the rapid corrosion occurred in hopes of ascertaining the cause of the rapid corrosion.

  12. Developing a service marketing strategy for wellness tourism company : Case study: Golden Retreats

    OpenAIRE

    Falck, Jenni

    2013-01-01

    Idea for this thesis arose when author was practicing yoga with the main owner of Golden Retreats in Mexico, where she owns a yoga studio. After variable conversations and mutual interest towards marketing and yoga, decision of the marketing strategy focused research was made. Purpose of this thesis was to understand the mix of suitable marketing strategies for wellness tourism business by approaching the subject by case-study about Golden Retreats. The research questions focused of findi...

  13. Interface modeling to predict well casing damage for big hill strategic petroleum reserve.

    Energy Technology Data Exchange (ETDEWEB)

    Ehgartner, Brian L.; Park, Byoung Yoon

    2012-02-01

    Oil leaks were found in well casings of Caverns 105 and 109 at the Big Hill Strategic Petroleum Reserve site. According to the field observations, two instances of casing damage occurred at the depth of the interface between the caprock and top of salt. This damage could be caused by interface movement induced by cavern volume closure due to salt creep. A three dimensional finite element model, which allows each cavern to be configured individually, was constructed to investigate shear and vertical displacements across each interface. The model contains interfaces between each lithology and a shear zone to examine the interface behavior in a realistic manner. This analysis results indicate that the casings of Caverns 105 and 109 failed by shear stress that exceeded shear strength due to the horizontal movement of the top of salt relative to the caprock, and tensile stress due to the downward movement of the top of salt from the caprock, respectively. The casings of Caverns 101, 110, 111 and 114, located at the far ends of the field, are predicted to be failed by shear stress in the near future. The casings of inmost Caverns 107 and 108 are predicted to be failed by tensile stress in the near future.

  14. Successful field implementation of novel cementing solution for ISC wells : case histories

    Energy Technology Data Exchange (ETDEWEB)

    Meher, R.K.; Suyan, K.M.; Dasgupta, D. [Society of Petroleum Engineers, Dubai (United Arab Emirates)]|[Oil and Natural Gas Corp. Ltd., Tel Bhavan, Dehradun (India); Deodhar, S.; Sharma, V.; Jain, V.K. [Oil and Natural Gas Corp. Ltd., Tel Bhavan, Dehradun (India)

    2008-10-15

    Cementation of in-situ combustion (ISC) wells is challenging since wells are frequently associated with weak and unconsolidated formation. However, cement rise up to surface is desired to prevent casing failure. Moreover, the cement sheath is also required to withstand extreme stresses due to high temperature cycling experienced during in-situ combustion process. In response to the problem of inadequate placement time and flash setting, Portland cement-silica blends were used for cementation of ISC wells in India instead of alumina cement blends. However, the use of the cement-silica blends has resulted in insufficient cement rise because of losses during cementation. The cured cement failed to contain the strength and permeability in course of ISC process causing charge of sub-surface shallower layers. This paper discussed the development and implementation of a non-alumina based thermally stable lightweight lead slurry and a ductile high temperature resistance tail slurry for mitigating these problems. The paper provided details of the study as well as four successful case histories. The cementing practice for ISC wells around the world was first described and illustrated. Next, the paper outlined the formulation of thermally stable tail slurry through laboratory studies. Slurry parameters of the tail slurry were presented, including slurry weight; thickening time; fluid loss; free fluid; and rheology. The paper also reviewed a study of compressive strength and permeability of thermal slurry; slurry parameters of the lightweight lead slurry; and study of compressive strength and permeability of lightweight thermal slurry. 8 refs., 4 tabs., 12 figs.

  15. Increasing lazy gas well production : a field wide case history in northern Alberta

    Energy Technology Data Exchange (ETDEWEB)

    Wylde, J.J. [Clariant Oil Services, Montreal, PQ (Canada)

    2010-07-01

    Gas well fluid loading is a common problem in mature natural gas fields. While many methods exist to overcome the accumulation of liquid in a gas well, there is no common method to all wells. Most techniques strive to increase the velocity of gas production to lift water and reduce loading, or to reduce the critical velocity. Mechanical methods include plunger lift, rods, electrical submersible pumps (ESP) and swabbing operations. This study focused on chemical addition to unload liquids from gas wells. It is amongst the first to report chemical deliquification in the Canadian oil patch. This paper described some of the unique challenges associated with this, and provided details on the chemistry of finished foamer products and manufacturing processes. A case history from a single property in northern Alberta was presented to demonstrate the field wide application of this technology. The paper also summarized the design criteria for a selection of remediation chemistries and methodologies used to counter the production decline occurring as a result of water production. Chemical deliquification involves cleaning the wells with a combination batch asphaltene solvent, followed by a very pervasive foam forming chemical to unload the high solids content and scale deposition. Chemical deliquification was shown to add significant value by increasing production by 33 per cent with an insignificant associated chemical cost. The results are application to enhanced recovery in the shale gas and coalbed methane (CBM) fields being produced across North America. 30 refs., 7 figs.

  16. Well materials durability in case of carbon dioxide and hydrogen sulphide geological sequestration

    International Nuclear Information System (INIS)

    The geological sequestration of carbon dioxide (CO2) and hydrogen sulphide (H2S) is a promising solution for the long-term storage of these undesirable gases. It consists in injecting them via wells into deep geological reservoirs. The steel and cement employed in the well casing can be altered and provide pathways for leakage with subsequent human and environmental consequences. The materials ageing was investigated by laboratory experiments in geologically relevant P-T conditions. A new experimental and analysis procedure was designed for this purpose. A numerical approach was also done. The cement and steel were altered in various fluid phases at 500 bar-120 C and 500 bar-200 C: a brine, a brine saturated with H2S-CO2, a mixture of brine saturated with H2S-CO2 and of supercritical H2S-CO2 phase, a dry supercritical H2S-CO2 phase without liquid water. In all cases, two distinct reactions are observed: the cement carbonation by the CO2 and the steel sulfidation by the H2S. The carbonation and sulfidation are respectively maximal and minimal when they occur within the dry supercritical phase without liquid water. The textural and porosity properties of the cement are weakly affected by all the treatments at 120 C. The porosity even decreases in presence of H2S-CO2. But these properties are affected at 200 C when liquid water is present in the system. At this temperature, the initial properties are only preserved or improved by the treatments within the dry supercritical phase. The steel is corroded in all cases and thus is the vulnerable material of the wells. (author)

  17. What Can We Learn from a Well-Adapted Enterprise System? A Case Study Approach

    DEFF Research Database (Denmark)

    Svejvig, Per; Jensen, Tina Blegind

    how the system was highly integrated, accepted by its users, and well-aligned to the work processes. This leads to the research question: Why is the enterprise system so well-adapted in SCANDI and what can we learn from this case study? Building on the structural model of technology to investigate...... the institutional logics and the sensemaking processes at play, we present three sets of reasons for the successful adaptation that relate to: 1) The institutional properties where a rationalized myth about effective work practices and an efficient ES travels from a national to a local level; 2) The nature...... as a long-term institutionalization and legitimization course of events leading to secondary socialization as the key lessons learned in achieving successful ES adaptations....

  18. Optimization of SAGD process with proxy models: case study of a 3-well-pair model

    Energy Technology Data Exchange (ETDEWEB)

    Fedutenko, Eugene; Yang, Chaodong; Card, Colin; Nghiem, Long [Computer Modeling Group Ltd. (Canada)

    2011-07-01

    In the heavy oil industry, steam assisted gravity drainage (SAGD) is a thermal recovery method used to enhance oil recovery. In order to improve the economics of SAGD operations, optimization of both SAGD operating conditions and well placements is necessary. Unfortunately this requires a large number of simulations which have a high computational cost. The aim of this paper is present a new workflow for improving the economics of SAGD with fewer simulations. A synthetic 3 well pair SAGD model was developed and simulations were conducted with a base case scenario and polynomial and Kriging proxy interpolation models. Results showed that both optimizations improved the NPV, SOR and RF of the model. In addition it was found that the polynomial model is faster than the Kriging model and that the Kriging model requires fewer iterations to obtain the optimal solution. This paper demonstrated that the use of polynomial or Kriging models helps improve the economics of SAGD operations.

  19. Investigation of Accelerated Casing Corrosion in Two Wells at Waste Management Area A-AX

    Energy Technology Data Exchange (ETDEWEB)

    Brown, Christopher F.; Serne, R JEFFREY.; Schaef, Herbert T.; Williams, Bruce A.; Valenta, Michelle M.; LeGore, Virginia L.; Lindberg, Michael J.; Geiszler, Keith N.; Baum, Steven R.; Kutnyakov, Igor V.; Vickerman, Tanya S.; Clayton, Ray E.

    2005-08-29

    The sidewall core samples from well 299-E24-19, which were comprised of a mixture of bentonite and silt lens material, had an average porewater chloride concentration of 376 mg/L. The sidewall core samples collected from well 299-E25-46 had calculated porewater chloride concentrations ranging from 1,200 to more than 10,000 mg/L. Clearly, the sidewall core samples tested were capable of generating porewaters with sufficient chloride concentrations to cause corrosion of the stainless steel well casing. Furthermore, analysis of the sidewall core samples yielded a clear relationship between chloride concentration and well casing corrosion. The sidewall core samples containing the greatest amount of chloride, 3000 {micro}g/g of sediment, came from the well that experienced the longest length of casing failure (4.2 feet in well 299-E25-46). All of the sidewall core samples tested from both decommissioned wells contained more chloride than the Wyoming bentonite test material. However, since chloride was present as a trace constituent in all of the sidewall core samples (less than 0.4 weight percent), it is possible that it could have been introduced to the system as a ''contaminant'' contained in the bentonite backfill material. Therefore, it is likely that chloride leached from the bentonite material and/or chloride carried by/as a constituent of the liquid waste stream caused the advanced well casing corrosion found at wells 299-E24-19 and 299-E25-46 via crevice corrosion and stress corrosion cracking. The sample of Enviroplug{trademark} No.8 high swelling Wyoming bentonite was characterized for its potential to generate porewaters of sufficient chlorinity to lead to accelerated corrosion of type 304L stainless steel. Overall, the bentonite sample had considerably high water extractable concentrations of sodium, chloride, fluoride, sulfate, and alkalinity (measured as calcium carbonate). Interpretation of the laboratory data indicated that the

  20. Risk assessment of oil and gas well drilling activities in Iran - a case study: human factors.

    Science.gov (United States)

    Amir-Heidari, Payam; Farahani, Hadi; Ebrahemzadih, Mehrzad

    2015-01-01

    Oil and gas well drilling activities are associated with numerous hazards which have the potential to cause injury or harm for people, property and the environment. These hazards are also a threat for the reputation of drilling companies. To prevent accidents and undesired events in drilling operations it is essential to identify, evaluate, assess and control the attendant risks. In this work, a structured methodology is proposed for risk assessment of drilling activities. A case study is performed to identify, analyze and assess the risks arising from human factors in one of the on shore drilling sites in southern Iran. A total of 17 major hazards were identified and analyzed using the proposed methodology. The results showed that the residual risks of 100% of these hazards were in the acceptable or transitional zone, and their levels were expected to be lowered further by proper controls. This structured methodology may also be used in other drilling sites and companies for assessing the risks.

  1. Acoustic field in a cased well with a sectorial crossing channel

    Institute of Scientific and Technical Information of China (English)

    LIN Weijun; ZHANG Chengyu; ZHANG Hailan; WANG Xiuming

    2004-01-01

    To study the possibility of detecting the crossing channel by using a traditional logging tool, acoustic field generated by a monopole source in a cased well with a crossing channel of various angles is simulated by 2.5-D Finite Difference Method (FDM). Snapshots of normal stress and synthetic time-domain waveforms are displayed. The two-dimensional spectrum in wave-number and frequency domains is also calculated, where the influence of the channel is clearer than that in the waveforms. Numerical study demonstrated that a crossing channel can be detected and sized if its angle is greater than 30 degree, and larger spacing and lower frequency source are favorable to detect and size the crossing channel.

  2. Vocabulary skills are well developed in university students with dyslexia: Evidence from multiple case studies.

    Science.gov (United States)

    Cavalli, Eddy; Casalis, Séverine; El Ahmadi, Abdessadek; Zira, Mélody; Poracchia-George, Florence; Colé, Pascale

    2016-01-01

    Most studies in adults with developmental dyslexia have focused on identifying the deficits responsible for their persistent reading difficulties, but little is known on how these readers manage the intensive exposure to written language required to obtain a university degree. The main objective of this study was to identify certain skills, and specifically vocabulary skills, that French university students with dyslexia have developed and that may contribute to their literacy skills. We tested 20 university students with dyslexia and 20 normal readers (matched on chronological age, gender, nonverbal IQ, and level of education) in reading, phonological, vocabulary breadth (number of known words), and vocabulary depth (accuracy and precision) tasks. In comparing vocabulary measures, we used both Rasch model and single case study methodologies. Results on reading and phonological tasks confirmed the persistence of deficits in written word recognition and phonological skills. However, using the Rasch model we found that the two groups performed at the same level in the vocabulary breadth task, whereas dyslexics systematically outperformed their chronological age controls in the vocabulary depth task. These results are supplemented by multiple case studies. The vocabulary skills of French university students with dyslexia are well developed. Possible interpretations of these results are discussed. PMID:26812595

  3. Vocabulary skills are well developed in university students with dyslexia: Evidence from multiple case studies.

    Science.gov (United States)

    Cavalli, Eddy; Casalis, Séverine; El Ahmadi, Abdessadek; Zira, Mélody; Poracchia-George, Florence; Colé, Pascale

    2016-01-01

    Most studies in adults with developmental dyslexia have focused on identifying the deficits responsible for their persistent reading difficulties, but little is known on how these readers manage the intensive exposure to written language required to obtain a university degree. The main objective of this study was to identify certain skills, and specifically vocabulary skills, that French university students with dyslexia have developed and that may contribute to their literacy skills. We tested 20 university students with dyslexia and 20 normal readers (matched on chronological age, gender, nonverbal IQ, and level of education) in reading, phonological, vocabulary breadth (number of known words), and vocabulary depth (accuracy and precision) tasks. In comparing vocabulary measures, we used both Rasch model and single case study methodologies. Results on reading and phonological tasks confirmed the persistence of deficits in written word recognition and phonological skills. However, using the Rasch model we found that the two groups performed at the same level in the vocabulary breadth task, whereas dyslexics systematically outperformed their chronological age controls in the vocabulary depth task. These results are supplemented by multiple case studies. The vocabulary skills of French university students with dyslexia are well developed. Possible interpretations of these results are discussed.

  4. Impact of casing rotation on premium connection service life in horizontal thermal wells

    Energy Technology Data Exchange (ETDEWEB)

    Xie, J.; Fan, C.; Tao, G.; Matthews, C.M. [C-FER Technologies (Canada)

    2011-07-01

    In the heavy oil industry, thermal recovery methods are often used to enhance oil recovery but thermal cycle loading can cause failure of casing connections. With thermal recovery methods, casing connections are submitted to bending cycles during casing installation and to thermal cycles thereafter and this results in fatigue damage to the connections. The aim of this paper is to review casing connection rotation bending fatigue assessments and relevant fatigue life prediction theorems. A methodology is presented herein for predicting connection fatigue damage under casing bending rotation loading conditions and is then applied to a design example. Results showed that the limited casing rotation occurring in the installation process had a small impact on the connection fatigue life and that the connections could withstand several under thermal cycles. This paper presented and applied a method to predict connection fatigue damage under casing bending rotation loading conditions.

  5. 26 CFR 1.612-4 - Charges to capital and to expense in case of oil and gas wells.

    Science.gov (United States)

    2010-04-01

    ... or gas. These are capital items and are returnable through depreciation. (2) Expense items... 26 Internal Revenue 7 2010-04-01 2010-04-01 true Charges to capital and to expense in case of oil... capital and to expense in case of oil and gas wells. (a) Option with respect to intangible drilling...

  6. Wellness Interventions for School Counselors: A Case-Study in Treating Asperger's Disorder

    Science.gov (United States)

    Hartwig Moorhead, Holly J.; Green, Judy; McQuistion, Rick R.; Ozimek, Barbara

    2008-01-01

    The Five Factor Wellness Inventory-Elementary Version (5F-WEL -E) was used in a pre- and post-test design to determine the wellness of a 13 year-old male with Asperger's Disorder. Wellness in the Creative and Physical Self domains was low. Thus, the school counselor implemented a 5-month treatment plan, based upon the Wheel of Wellness, in the…

  7. Radon measurements at IC-09 well of Chingshui geothermal field (Taiwan): A case study

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Y. [Department of Mineral and Petroleum Engineering, National Cheng Kung University, 1, University Ave., Tainan 701, Taiwan (China); Kuo, T., E-mail: mctkuobe@mail.ncku.edu.t [Department of Mineral and Petroleum Engineering, National Cheng Kung University, 1, University Ave., Tainan 701, Taiwan (China); Fan, K. [Department of Mineral and Petroleum Engineering, National Cheng Kung University, 1, University Ave., Tainan 701, Taiwan (China); Liang, H. [Exploration and Development Research Institute, CPC Corporation, Taiwan (China); Tsai, C. [Department of Earth Sciences, National Cheng Kung University, Tainan, Taiwan (China); Chiang, C. [Central Geological Survey, Ministry of Economic Affairs, Taipei, Taiwan (China); Su, C. [Department of Mineral and Petroleum Engineering, National Cheng Kung University, 1, University Ave., Tainan 701, Taiwan (China)

    2011-02-15

    Radon concentration was monitored during the flow tests of well IC-09 at the Chingshui geothermal field. The radon concentration was found to increase from 54 {+-} 29 to 983 {+-} 65 Bq/m{sup 3} as a step function of production time, or cumulative production. The observed radon behavior can be explained by a radial composite model with the carbonate scales deposited in the skin zone near the well. The radius of skin zone near well IC-09 can be estimated with radon data at about 20 m using a plug flow model. Monitoring natural radon during the well flow tests is a helpful tracer to diagnose the formation damage near the well.

  8. Automated interpretation of nuclear and electrical well loggings for basalt characterization (case study from southern Syria).

    Science.gov (United States)

    Asfahani, J; Abdul Ghani, B

    2012-10-01

    Nuclear well logging, including natural gamma ray, density and neutron-porosity techniques are used with electrical well logging of long and short normal techniques in order to characterize the large extended basaltic areas in southern Syria. Four kinds of basalt have been identified: hard massive basalt, hard basalt, pyroclastic basalt and the alteration basalt products, clay, based on a statistical analysis approach with the threshold concept. The statistical conditions for such basalt characterization have been programmed in the present research to automatically interpret the well logging data for establishing and predicting the lithological cross-section of the studied well. A specific computer program has been written in Delphi for such purposes. The program is flexible and it can be used for other well logging applications by changing the statistical conditions and the well logging parameters. The program has been successfully tested on the Kodanah well logging data in southern Syria.

  9. Some problems of evaluation of influence of perforation on casing string from well measurement results

    International Nuclear Information System (INIS)

    The mechanical influences on the casing are studied with instruments based on the registration of scattered γ-radiation : the γ-defectometer-thickness gauge SGDT-2 and the γ-thickness gauge. The combined measurements with both apparatuses before and after the performation allow to determine the degree of deformation and the destructions of the casing under the action of the perforation by measuring the mean thickness of the tube wall along the perimeter of the tube and its inner diameter

  10. 26 CFR 1.612-5 - Charges to capital and to expense in case of geothermal wells.

    Science.gov (United States)

    2010-04-01

    ... geothermal wells. 1.612-5 Section 1.612-5 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE... capital and to expense in case of geothermal wells. (a) Option with respect to intangible drilling and... rights) in the development of a geothermal deposit (as defined in section 613(e)(3) and the...

  11. Multilateral wells drilling technology implementation in the Castilla Field - Colombia, to improve Guadalupe reservoirs drainage: Castilla 32, 33, and 34 ML wells cases study

    Energy Technology Data Exchange (ETDEWEB)

    Florez, Alberto; Mercado, Orlando; Rodriguez, Sandra; Rojas, Ricardo; Naranjo, Carlos A. [ECOPETROL, Bogota (Colombia); Velez, Jorge [Halliburton Latin-America, Santa Fe de Bogota (Colombia)

    2008-07-01

    National Colombian Petroleum Company - ECOPETROL, is in the process of evaluating different technologies to increase production and improve recovery factors in their mature oil and gas fields. As part of that process, a multidisciplinary team evaluated the feasibility of multilateral well technology implementation in some of their mature fields that are currently in the late-development phase. Castilla field, located in the eastern planes of Colombia, was selected as the first option for multilateral technology implementation based in reservoir features, type of oil, and field antecedents. This paper presents the process used to conceptualize the optimum multilateral well design for Castilla field, integrating all of the geological and engineering disciplines. Geology: geological model visualization, target zones definition, pay zones lateral continuity, petrophysical properties, and fluids distribution were evaluated to select the areas to drill with advanced architecture well design. Reservoir: basic reservoir performance simulation was performed to evaluate productivity with horizontal and multilateral wells, and the difference in final reserves recovery compared with current conventional directional wells. Water production and coning problems were identified as key factors to define the multilateral well implementation in this field. Drilling: trajectory design, multilateral junction depth definition and TAML level selection, casing point's definition, drilling time and AFE estimation were the technical aspects evaluated during the planning phase to determine if the technology would be feasible. A comparison with conventional pad design was conducted to validate economic value. Multilateral TAML level 4 system selection flow process is presented applying oil industry best practices. Completion: The optimum lateral completion and production assembly design were main concerns during the planning process. Slotted liners, screens, and open-hole completion

  12. Marketing a Wellness Program: A Case Study in Bridging the Gap between Academic and Student Affairs.

    Science.gov (United States)

    Dod, Glenna A.; Earwood-Smith, Glenda

    1988-01-01

    Reports on a collaborative effort between a student services division and a classroom instructor aimed at increasing student involvement in marketing a wellness program for college students. Claims program was successful in improving attendance at the wellness program and changing attitudes towards this type of programing. (Author/ABL)

  13. Opportunities for Cancer Prevention Using Employee Wellness Programs: The Case of Kansas State Employees

    Science.gov (United States)

    Hui, Siu-kuen Azor; Engelman, Kimberly; Shireman, Theresa I.; Hunt, Suzanne; Ellerbeck, Edward F.

    2012-01-01

    Background: The utility of employee wellness programs (EWPs) in cancer prevention and control is not well established. Purpose: This project is to determine the potential value of EWPs in preventing cancer by examining the characteristics of EWP participants and their prevalence of cancer risk factors. Methods: A secondary data analysis of health…

  14. Optimization of well field operation: case study of søndersø waterworks, Denmark

    DEFF Research Database (Denmark)

    Hansen, Annette Kirstine; Madsen, Henrik; Bauer-Gottwein, Peter;

    2013-01-01

    An integrated hydrological well field model (WELLNES) that predicts the water level and energy consumption in the production wells of a waterworks is used to optimize the management of a waterworks with the speed of the pumps as decision variables. The two-objective optimization problem of minimi...

  15. Re-Examining the Case for Marriage: Union Formation and Changes in Well-Being

    OpenAIRE

    Musick, Kelly; BUMPASS, LARRY

    2012-01-01

    This article addresses open questions about the nature and meaning of the positive association between marriage and well-being, namely, the extent to which it is causal, shared with cohabitation, and stable over time. We relied on data from the National Survey of Families and Households (N = 2,737) and a modeling approach that controls for fixed differences between individuals by relating union transitions to changes in well-being. This study is unique in examining the persistence of changes ...

  16. Does working with child abuse cases affect professionals' parenting and the psychological well-being of their children?

    Science.gov (United States)

    Dursun, Onur Burak; Sener, Mustafa Talip; Esin, Ibrahim Selcuk; Ançi, Yüksel; Yalin Sapmaz, Sermin

    2014-01-01

    Work in the field of sexual abuse is extremely stressful and may arouse negative personal reactions. Although these secondary trauma effects are well described on a personal level, there is not enough evidence to understand whether these professionals carry these effects to their homes, families, and offspring. This study aims to identify the effects of working with child abuse cases on the anxiety level and parenting styles of childhood trauma workers and on their children's well-being. A total of 43 health and legal system workers who worked with abused children in any step of their process and who had children constituted the study group, and 50 control cases, each working in the same institution and having the same occupation as 1 of the participants from the study group and having children but not working directly with children and child abuse cases, were included in the study. Participants were asked to fill out a sociodemographic form, the Parental Attitude Research Instrument, the trait portion of the State-Trait Anxiety Inventory, and an age-appropriate form of the Child Behavior Checklist for each child they had. Professionals in the study working with child abuse cases demonstrated significantly higher democratic parenting attitudes. Law enforcement workers working with child abuse cases demonstrated stricter and more authoritarian parenting strategies, as well as more democratic attitudes, than their colleagues. There was not a statistically significant relationship between child abuse workers' anxiety level and their children's well-being among control subjects.

  17. Sexual well-being, happiness, and satisfaction, in women: the case for a new conceptual paradigm.

    Science.gov (United States)

    Rosen, Raymond C; Bachmann, Gloria A

    2008-01-01

    Based on results of large-scale survey studies, there is evidence of an association between sexual activity and satisfaction, on the one hand, and aspects of emotional well-being, partner satisfaction, and overall quality of life on the other. Although the nature of the casual relationship is unclear, women with more active and satisfying sexual relationships report consistently higher ratings of emotional and relationship satisfaction. This heightened sense of well-being potentially contributes to improved subjective health and other positive outcomes. In this commentary article, we review recent findings and propose a new conceptual model for addressing these effects in controlled studies.

  18. Secondary transmission of cryptosporidiosis associated with well water consumption: two case studies.

    Science.gov (United States)

    Rezende, Natania Carol Cavalcante; Bezerra, Camila Loredana Pereira Alves Madeira; Almeida, Jéssica Jacinto Salviano de; Fernandes, Tatiane Uetti Gomes; Luz, Kleber Giovanni

    2016-04-01

    Cryptosporidiosis is a very prominent disease in the field of public health, and usually causes diarrhea. We describe two immunocompetent patients who presented with chronic diarrhea that was ultimately found to be caused by continuous exposure to well water contaminated with the microbial cysts (oocysts) of the Cryptosporidium spp parasite. We describe the patients' histories and possible explanations for their prolonged symptoms.

  19. Reexamining the Case for Marriage: Union Formation and Changes in Well-Being

    Science.gov (United States)

    Musick, Kelly; Bumpass, Larry

    2012-01-01

    This article addresses open questions about the nature and meaning of the positive association between marriage and well-being, namely, the extent to which it is causal, shared with cohabitation, and stable over time. We relied on data from the National Survey of Families and Households (N = 2,737) and a modeling approach that controls for fixed…

  20. Riccati equations for stable well-posed linear systems : The generic case

    NARCIS (Netherlands)

    Curtain, RF

    2003-01-01

    Under the generic assumption that zero is in the resolvent set of the generator, we show that the optimal control problem for a stable well-posed linear system is equivalent to a control problem for its reciprocal system which has bounded generating operators. Consequently, the operator X that defin

  1. Harding - a field case study: Sand control strategy for ultra-high productivity and injectivity wells

    Energy Technology Data Exchange (ETDEWEB)

    McKay, G.; Bennett, C.; Price-Smith, C.; Dowell, S.; McLellan, W. [British Petroleum (United Kingdom)

    1998-12-31

    The strategy adopted and the factors considered in the development of the sandface completion design for Phase One of the Harding Field in the unconsolidated Balder Massive Sand in the U.K. Sector of the North Sea is described. The field development utilizes a TPG 500 Jack-up Drilling and Production Unit in conjunction with a concrete gravity base tank (GBT). The first phase of the development involved drilling and completing horizontal wells sand-free, ultra-high production (over 30,000 BOPD/well, with PI in excess of 1,000 bbl/day/psi). The experiences showed that pre-packed screens can be successfully utilized to provide lasting sand control with high rate of production in clean homogenous sandstones, and that testing for fluid compatibility, formation damage, screen plugging, corrosion and erosion potential are essential pre-requisites in determining the optimal solution in any well with sand production potential.The experiences gained in Phase One have contributed to design enhancements for Phase Two of the project which include extended reach horizontal wells to neighbouring satellite pools. 3 refs., 1 tab., 8 figs.

  2. A Taxonomy of Well-Being for Small-Town Elderly: A Case for Rural Diversity.

    Science.gov (United States)

    Scheidt, Rick J.

    1984-01-01

    Describes the development of a taxonomy of social and psychological well-being for 900 elderly small town residents. Compares the four largest groups (partially engaged, fully engaged, disengaged, and frail) in terms of mental and physical health, contact with others, and activity. (JAC)

  3. An Adolescent Case of Osteopetrosis with Portal Hypertension as well as Mandibula Osteomyelitis.

    Science.gov (United States)

    Leblebisatan, Goksel; Celik, Umit; Temiz, Fatih; Celik, Tamer; Aydin, Fahri; Istifli, Fatma Levent; Leblebisatan, Serife; Komur, Mustafa

    2015-06-01

    Osteopetrosis is a clinical syndrome characterized by the failure of osteoclasts to resorb bone. Excessive bone density can interfere with vital tissues and structures, causing serious problems of the body. Hematopoietic insufficiency, disturbed tooth eruption, nerve entrapment syndromes, and growth impairment may develop in a patient with osteopetrosis. Herein, we present an adolescent girl diagnosed with non-infantile type of osteopetrosis with rare complications of the disease like mandibular osteomyelitis and portal hypertension (PHT) without liver cirrhosis. To our knowledge, this is the first pediatric case with osteopetrosis related PHT.

  4. Assessment and risk analysis of casing and cement impairment in oil and gas wells in Pennsylvania, 2000–2012

    OpenAIRE

    Ingraffea, Anthony R.; Wells, Martin T.; Santoro, Renee L.; Shonkoff, Seth B.C.

    2014-01-01

    Previous research has demonstrated that proximity to unconventional gas development is associated with elevated concentrations of methane in groundwater aquifers in Pennsylvania. To date, the mechanism of this migration is poorly understood. Our study, which looks at more than 41,000 conventional and unconventional oil and gas wells, helps to explain one possible mechanism of methane migration: compromised structural integrity of casing and cement in oil and gas wells. Additionally, methane, ...

  5. Basalt characterization by means of nuclear and electrical well logging techniques. Case study from Southern Syria.

    Science.gov (United States)

    Asfahani, Jamal

    2011-03-01

    Nuclear well logging, including natural gamma ray, density, and neutron-porosity techniques are used with electrical well logging of long and short normal techniques to characterize the basaltic areas largely extended in Southern Syria. Statistical analysis approach with the threshold concept has been adapted for such characterization, where four kinds of basalt have been identified: very hard basalt, hard basalt, fractured basalt, and basalt alteration products. The spectrometric gamma technique has also been applied on the retrieved rock samples in order to determine the radioactive content (eU, eTh, and K%) of the basaltic section in the study area. No radioactive anomalies have been detected, the radioactive values are normal and in the expected range.

  6. Forest and Well-Being Services for Tourists : Case:Nuuksio

    OpenAIRE

    Nenonen, Sami; Iivari, Johanna

    2011-01-01

    Well-being and the health effects of forests and nature have gained research interest during recent years. Forest therapy is a therapeutic method which prevents and cures different kinds of diseases through the help of nature. Forest therapy is focused not only for healthy people to strengthen them physically and fight against stress and fatigue, but also for the sick. The treatment of forest therapy consists mainly in walking trails, jogging and exercising in the middle of forests. Forest th...

  7. Towards tailored mobile mental wellness training programs: a case study of the effects of health complaints

    OpenAIRE

    Koistinen, K. (Kati)

    2014-01-01

    Background: Neck problems, tiredness, depression and other mental health problems are nowadays very common. Many people have difficulties addressing their health problems because they don’t have the motivation or ability to change their attitudes and behaviours. It would be important to offer them help and tools so that they would be able to take care of themselves better and improve their well-being. All sorts of technical equipment such as PC’s, laptops, tablets, and mobile phones have...

  8. Men’s Health and Well-Being: The Case Against a Separate Field

    OpenAIRE

    Hearn, Jeff

    2015-01-01

    This article begins with an examination of the development of the academic and policy field of men’s health and well-being. This includes the form and shape of the field, its ideological positivity, and the different, sometimes contradictory, interests that construct the field. This prompts the question: why study men’s health? Diverse possible answers to this question are outlined, in terms of different personal, policy and theoretical political contexts of men’s relations to ...

  9. Inorganic Corrosion-Inhibitive Pigments for High-Temperature Alkali-activated Well Casing Foam Cement

    Energy Technology Data Exchange (ETDEWEB)

    Sugama, T. [Brookhaven National Lab. (BNL), Upton, NY (United States); Pyatina, T. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2014-11-01

    This study evaluates inorganic pigments for improving carbon steel (CS) brine-corrosion protection by the sodium metasilicate-activated calcium aluminate cement/Fly Ash blend at 300°C. Calcium borosilicate (CBS) and zinc phosphate, significantly improved CS corrosion-protection by decreasing cement’s permeability for corrosive ions and inhibiting anodic corrosion. An amorphous Na2O-Al2O3-SiO2-H2O phase tightly attached to CS surface formed at 300oC in CBS-modified cement pore solution. The corrosion rate of the CS covered with this phase was nearly 4-fold lower than in the case of nonmodified cement pore solution where the major phase formed on the surface of CS was crystalline analcime.

  10. Inorganic Corrosion-Inhibitive Pigments for High-Temperature Alkali-activated Well Casing Foam Cement

    Energy Technology Data Exchange (ETDEWEB)

    Sugama, T. [Brookhaven National Lab. (BNL), Upton, NY (United States); Pyatina, T. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2014-11-14

    This study evaluates inorganic pigments for improving carbon steel (CS) brine-corrosion protection by the sodium metasilicate-activated calcium aluminate cement/Fly Ash blend at 300°C. Calcium borosilicate (CBS) and zinc phosphate, significantly improved CS corrosion-protection by decreasing cement’s permeability for corrosive ions and inhibiting anodic corrosion. An amorphous Na2O-Al2O3-SiO2-H2O phase tightly attached to CS surface formed at 300oC in CBS-modified cement pore solution. The corrosion rate of the CS covered with this phase was nearly 4-fold lower than in the case of nonmodified cement pore solution where the major phase formed on the surface of CS was crystalline analcime.

  11. Capability Approach for well-being Evaluation in Regional Development Planning : Case Study in Magelang Regency. Central java, Indonesia

    NARCIS (Netherlands)

    Pramono, Retno Widodo Dwi

    2016-01-01

    The thesis uses Amartya Sen’s Capability Approach (1993, 2000) to devise a set of criteria to evaluate the well-being and quality of life of economic groups in a case study of Magelang, a small rural area in Central Java, Indonesia. In applying this method, the researcher examines how the spatial ch

  12. Methods for estimating petrophysical parameters from well logs in tight oil reservoirs: a case study

    Science.gov (United States)

    Zhao, Peiqiang; Zhuang, Wen; Sun, Zhongchun; Wang, Zhenlin; Luo, Xingping; Mao, Zhiqiang; Tong, Zemin

    2016-02-01

    Estimating petrophysical parameters from well logs plays a significant role in the exploration and development of tight oil resources, but faces challenges. What’s more, the methods for petrophysical parameters from well logs are paid little attention at present. In this paper, the typical tight oil reservoirs of Northwest China are used as an example. Based on the characteristics of mineralogy and fluids in the study field, the rock is assumed into five components which are clays, quartz and feldspar, carbonates, kerogen and pore fluids (porosity). The sum of kerogen content and porosity is defined as the apparent porosity. Then, two porosity log response equations are established. Once the clay content is determined by an individual method, the quartz and feldspar content, carbonate content and apparent porosity are calculated through the established equations. The kerogen content is the difference of the apparent porosity and porosity from nuclear magnetic resonance (NMR) logs. This paper also presents a new approach that combines the complex refractive index method (CRIM) and pseudo Archie method to compute saturation from dielectric logs, which avoids selection for the dielectric constants of each of the minerals. The effectiveness and reliability of these methods are verified by the successful application in the study of the target tight oil play in Northwest China.

  13. Analysis of Radon in Shallow-well: A Case Study at Pijit District in Songkhla, Thailand

    International Nuclear Information System (INIS)

    Radon levels were measured in shallow-well samples collected from Pijit district of Songkhla, Thailand. A total of 35 water samples from shallow-well were collected and analyzed for radon concentration. The measurements were performed using RAD7, an electronic radon detector, manufactured by Durridge Company Inc. The radon concentration in these samples is found to vary from (1.39 ± 0.18) to (89 ± 8.11) Bq/l with a mean value of (16.7 ± 2.33) Bq/l. These recorded values are compared with the safe limit values recommended for drinking water by various health and environmental protection agencies. The recorded values of radon concentration are without the safe limit of 11 Bq/l recommended by the US Environmental Protection Agency. The annual effective dose for ingestion and inhalation is also evaluated in this research. The estimated total effective dose varies from 4.72 to 65.69 μSv/year. The total effective dose in all locations of the studied area is found to be within the safe limit (0.1 mSv/year) recommended by World Health Organization and European Council.

  14. Living Together v. Living Well Together: A Normative Examination of the SAS Case

    Directory of Open Access Journals (Sweden)

    Lori G. Beaman

    2016-04-01

    Full Text Available The European Court of Human Rights decision in SAS from France illustrates how a policy and national mantra that ostensibly aims to enhance inclusiveness, ‘living together’, is legally deployed in a manner that may have the opposite effect. In essence, despite acknowledging the sincerity of SAS’s religious practice of wearing the niqab, and her agency in making the decision to do so, the Court focuses on radicalism and women’s oppression amongst Muslims. Taking the notion of living together as the beginning point, the paper explores the normative assumptions underlying this notion as illustrated in the judgment of the Court. An alternative approach, drawing on the work of Derrida for the notion of ‘living well together’ will be proposed and its implications for social inclusion explicated. The paper’s aim is to move beyond the specific example of SAS and France to argue that the SAS pattern of identifying particular values as ‘national values’, the deployment of those values through law, policy and public discourse, and their exclusionary effects is playing out in a number of Western democracies, including Canada, the country with which the author is most familiar. Because of this widespread dissemination of values and their framing as representative of who ‘we’ are, there is a pressing need to consider the potentially alienating effects of a specific manifestation of ‘living together’ and an alternative model of ‘living well together’.

  15. A case of Bowen’s disease responding well to radiotherapy

    Directory of Open Access Journals (Sweden)

    Goknur Kalkan

    2013-08-01

    Full Text Available Bowen’s disease is a form of intraepidermal squamous cell carcinoma which is known as carsinoma in situ. The head, neck, and extremities are the most commonly affected anatomic locations. Treatment options for Bowen’s disease include observation, surgery, cryotherapy, electrodesiccation and curettage, topical application of 5-fluorouracil or imiquimod, Moh’s micrographic surgery, photodynamic therapy, and radiotherapy. Radiation therapy is advantageous in patients who refuse surgery, for large or multiple lesions, for lesions in cosmetically sensitive areas, and in patients who are predisposed to formation of keloids, with a high cure rate cited in the literature. Here we report a 70-year-old man who was diagnosed as Bowen’s disease and completely healed with the treatment of radiotherapy. By means of this case report, we will review the current literature and empasize that radiotherapy is an effective treatment alternative for Bowen's disease in the suitable lesions. [Cukurova Med J 2013; 38(4.000: 813-817

  16. Case-Based Reasoning Method in Cost Estimation of Drilling Wells

    OpenAIRE

    Hossein Shams Mianaei; Seyed Hossein Iranmanesh

    2013-01-01

    Aim of study is the cost estimation of drilling6T8T 6T8Twells6T8T 6T8Tusing6T Case-Based 6TReasoning6T8T (CBR) method which6T8T is created based6T8T 6T8Ton6T8T 6T8Tthe6T8T 6T8Tviewpoint of using presented6T8T 6T8Tsolutions6T8T 6T8Tfor6T8T 6T8Tprevious6T8T 6T8Tsolved6T8T 6T8Tproblems6T8T in order 6T8Tto solve6T8T new 6T8Tsimilar problems6T8T. 6T8TIn companies6T8T 6T8Tor6T8T 6T8Torganizations6T8T which 6T8Tcost estimation, scheduling,6T8T 6T8Tdesign6T8T, planning 6T8Tand project activities6T8T ...

  17. The Case for a Publicly Available, Well-Instrumented GBT Operating at 20-115 GHz

    CERN Document Server

    Bally, J; Bolatto, A; Casey, C; Church, S; di Francesco, J; Goldsmith, P; Goodman, A; Harris, A; Jackson, J; Leroy, A; Lockman, F; Lovell, A; Marscher, A; Marrone, D; Mason, B; Mroczkowski, T; Shirley, Y; Yun, M

    2016-01-01

    A well-instrumented Green Bank Telescope (GBT) operating at high frequency represents a unique scientific resource for the US community. As a filled-aperture, 100m-diameter telescope, the GBT is ideally suited to fast mapping of extended, low surface brightness emission with excellent instantaneous frequency coverage. This capability makes the GBT a key facility for a range of cutting edge science described in this document. We note that the ability to perform the necessary observations is unique and highly complementary to the capabilities offered by interferometers, and should be preserved. We argue that rather than divesting from this exceptional resource, it makes sense for the US community to invest moderately to maintain GBT operations and to instrument it in an optimal manner, enabling it to become an extraordinary complement to existing and future radio interferometers. Adequately instrumented, the GBT would be a pillar for 20-115 GHz science in the US and the world.

  18. Unusually well preserved casts of halite crystals: A case from the Upper Frasnian of northern Lithuania

    Science.gov (United States)

    Rychliński, Tomasz; Jaglarz, Piotr; Uchman, Alfred; Vainorius, Julius

    2014-07-01

    Upper Frasnian carbonate-siliciclastics of the Stipinai Formation (northern Lithuania) comprise a bed of calcareous silty arenite with casts of halite crystals, including hopper crystals. Unusually well-preserved casts occur on the lower surface of the bed, while poorly-preserved casts are present on the upper bedding surface. The casts originated as the result of the dissolution of halite crystals which grew in the sediment. The dissolution took place during early stages of diagenesis, when host sediment was soft. Unstable cavities after crystal dissolution were filled by overlying sediment forming their casts. The collapsing sediment form sink-hole deformation structures which disturb wave-ripple cross lamination from the upper part of the bed. Dewatering pipe structures are also present. The casts and accompanying sink-hole and dewatering pipes are classified as the postdepositional deformation structures caused by haloturbation.

  19. GROUND WATER QUALITY FROM PRIVATE WELLS. CASE STUDY: TARNA MARE - SATU MARE COUNTY

    Directory of Open Access Journals (Sweden)

    CRISTINA ROŞU

    2016-03-01

    Full Text Available The purpose of the present research was to assess the ground water quality from nine private wells from Tarna Mare commune located in Satu Mare County. Tarna Mare the northernmost commune of Satu Mare County, it has a population of 3.774 inhabitants and a total surface of 44 km2. The commune is located along the Tarna Valley at the foothills of Oas Mountains. Tarna Mare background is rich in complex ores of non-ferrous metals (copper, lead, zinc, gold and silver. In order to evaluate the water quality, several physico-chemical parameters (pH, redox potential, total dissolved solids, electrical conductivity and salinity were investigated. The samples were collected in October, November, December 2015 and January 2016. The results showed that the waters were acidic having the pH between 4.7 and 7.52, considerably lower than the limit imposed by national legislation (between 6.5 and 9.5. The investigated wells proved to have a relatively high contented of dissolved salts, having the electrical conductivity between 83.6 μS/cm and 908 μS/cm and the salinity between 0 and 0.4 ‰. Regarding the cations concentrations (mg / L those ranged between: 21.55 – 318.19 for Na+, 16.42 – 556.43 for Ca2+, 5.27 – 149.48 for Mg2+ and 5.7 – 481.83 for K+. Li+ and NH4+ were not detected in analyzed samples.

  20. New Deep Dermal ADM Incorporates Well in Case Series of Complex Breast Reconstruction Patients.

    Science.gov (United States)

    Wilson, Henry Benjamin

    2015-05-01

    Breast cancer patients with significant comorbidities present reconstructive challenges due to a predictably high complication rate. During expander-based breast reconstruction, human acellular dermal matrix (ADM) is often used to prevent pectoralis muscle retraction, facilitate early expansion, and improve cosmetic outcome. Device infection and chronic seroma have been correlated to the addition of the graft by some large database reports but not others. This study describes the first reported experience with a new deep dermal ADM, FlexHD® Pliable™ (MTF, Edison, NJ). Sixteen breasts in 10 consecutive patients identified retrospectively and followed prospectively had immediate expander-based breast reconstruction utilizing the new ADM. Patient comorbidities were catalogued, complications were recorded, and overall reconstructive success was assessed. At implant exchange, the ADM was examined for tissue ingrowth and biopsied for histologic examination. All 16 breasts had successful reconstructions. Two breasts (12.5%) developed device infection, requiring removal and later replacement of the expander. One breast (6.7%) developed chronic seroma, also requiring expander removal and later replacement. All the complicated patients had significant comorbidities, including obesity in all 3. At expander removal, the FlexHD Pliable showed near-complete visual tissue incorporation in 14 of 16 breasts (88%). This case series demonstrates significant reconstructive success in challenging patients utilizing a novel ADM. Visual and histologic assessment of tissue ingrowth into the graft suggests the high rate of complication may be due to patient comorbidities rather than addition of ADM. Additional experience is needed to confirm and the study is ongoing. PMID:26020380

  1. Brief communication: Two well-marked cases of aerodynamic adjustment of sastrugi

    Science.gov (United States)

    Amory, C.; Naaim-Bouvet, F.; Gallée, H.; Vignon, E.

    2016-04-01

    In polar regions, sastrugi are a direct manifestation of drifting snow and form the main surface roughness elements. In turn, sastrugi alter the generation of atmospheric turbulence and thus modify the wind field and the aeolian snow mass fluxes. Little attention has been paid to these feedback processes, mainly because of experimental difficulties. As a result, most polar atmospheric models currently ignore sastrugi over snow-covered regions. This paper aims at quantifying the potential influence of sastrugi on the local wind field and on snow erosion over a sastrugi-covered snowfield in coastal Adélie Land, East Antarctica. We focus on two erosion events during which sastrugi responses to shifts in wind direction have been interpreted from temporal variations in drag and aeolian snow mass flux measurements during austral winter 2013. Using this data set, it is shown that (i) neutral stability, 10 m drag coefficient (CDN10) values are in the range of 1.3-1.5 × 10-3 when the wind is well aligned with the sastrugi, (ii) as the wind shifts by only 20-30° away from the streamlined direction, CDN10 increases (by 30-120 %) and the aeolian snow mass flux decreases (by 30-80 %), thereby reflecting the growing contribution of the sastrugi form drag to the total surface drag and its inhibiting effect on snow erosion, (iii) the timescale of sastrugi aerodynamic adjustment can be as short as 3 h for friction velocities greater than 1 m s-1 and during strong drifting snow conditions and (iv) knowing CDN10 is not sufficient to estimate the snow erosion flux that results from drag partitioning at the surface because CDN10 includes the contribution of the sastrugi form drag.

  2. Case histories : implementation of new liner hanger technology in south central Venezuela significantly improves operations in complex wells

    Energy Technology Data Exchange (ETDEWEB)

    Jimenez, C.; Soto, S.; Leon, A. [PDVSA Petroleos de Venezuela SA, Caracas (Venezuela, Bolivarian Republic of); Marval, P.; Schoener-Scott, M. [Halliburton, Houston, TX (United States)

    2009-07-01

    Liner hangers are used in deep drilling operations to eliminate the need for full casing strings. However, conventional liner-hanger system do not always permit tool rotation, and liner-hanger failures can result in the complete loss of the wellbore. This study discussed an expandable liner hanger designed to withstand aggressive reaming as well as drilling to depths. Three case histories of wells located in southern Venezuela were used to compare the use of traditional and expandable liner hanger systems. The studies considered liner weight, and the pressure differentials caused by the use of positive seals. The study showed that conventional liner systems are not suited to the extreme environments of the Venezuelan heavy oil reserves. Multiple leak paths were observed. The expandable liner system provided a gas-tight seal, improved flow paths, and reduced the need for remedial cement jobs. It was concluded that use of the expandable systems also increased worker safety. 6 refs., 13 figs.

  3. A well-based cost function and the economics of exhaustible resources: The case of natural gas

    Energy Technology Data Exchange (ETDEWEB)

    Chermak, J.M. [Naval Postgraduate School, Monterey, CA (United States); Patrick, R.H. [Rutgers Univ., Newark, NJ (United States)

    1995-03-01

    A cost function for natural gas production is estimated, using a pool of data from 29 wells. Statistically exact tests are performed for parameter stability across locations, formations, wells, and producing firms. Costs are determined to be inversely related to remaining recoverable reserves, and marginal costs of production are decreasing in all cases. Theoretical implications of these cost characteristics on optimal exhaustible resource extraction are analyzed. Although marginal cost is decreasing, production effects on the resource stock imply that an interior production path may be optimal. Conditions under which production optimally occurs at the capacity bound are delineated, and optimal interior production paths are characterized. 21 refs., 2 tabs.

  4. Strange Case of Dr. Jekyll and Mr. Hyde-was Robert Louis Stevenson inspired by Horace Wells?

    Science.gov (United States)

    Vyas, Rini A; Desai, Sukumar P

    2015-01-01

    It has been suggested that Robert Louis Stevenson's masterpiece Strange Case of Dr. Jekyll and Mr. Hyde derived inspiration from the real-life tragedy of the final days of Connecticut dentist Horace Wells, innovator of the clinical use of the anesthetic properties of nitrous oxide. We examined Stevenson's letters, biographies, and other references in the literature, press, and online to determine whether any factual basis exists for Stevenson to be aware of Wells' life, and also if it played any role in creating the novel's plot. Stevenson was born in Scotland, several years after Wells had committed suicide in New York. Wells' life and death received widespread coverage in the northeastern United States, but there is no evidence that it was printed in newspapers or periodicals in England or Scotland. On the other hand, novelists of the period, psychologists, and the lay public were quite interested in the concept of split personalities and the dual nature of man, so these may have been natural substrates for the novel. There is evidence that Stevenson dreamt about episodes similar to those depicted in his novel. All claims to any relationship between Wells and the novel come from the United States, and none of them are backed by evidence. In the absence of evidence supporting a relationship between the behavior exhibited by Wells during his final days and any inspiration that Stevenson might have derived from it, we conclude that there is insufficient evidence to suggest any relationship between them.

  5. Strange Case of Dr. Jekyll and Mr. Hyde-was Robert Louis Stevenson inspired by Horace Wells?

    Science.gov (United States)

    Vyas, Rini A; Desai, Sukumar P

    2015-01-01

    It has been suggested that Robert Louis Stevenson's masterpiece Strange Case of Dr. Jekyll and Mr. Hyde derived inspiration from the real-life tragedy of the final days of Connecticut dentist Horace Wells, innovator of the clinical use of the anesthetic properties of nitrous oxide. We examined Stevenson's letters, biographies, and other references in the literature, press, and online to determine whether any factual basis exists for Stevenson to be aware of Wells' life, and also if it played any role in creating the novel's plot. Stevenson was born in Scotland, several years after Wells had committed suicide in New York. Wells' life and death received widespread coverage in the northeastern United States, but there is no evidence that it was printed in newspapers or periodicals in England or Scotland. On the other hand, novelists of the period, psychologists, and the lay public were quite interested in the concept of split personalities and the dual nature of man, so these may have been natural substrates for the novel. There is evidence that Stevenson dreamt about episodes similar to those depicted in his novel. All claims to any relationship between Wells and the novel come from the United States, and none of them are backed by evidence. In the absence of evidence supporting a relationship between the behavior exhibited by Wells during his final days and any inspiration that Stevenson might have derived from it, we conclude that there is insufficient evidence to suggest any relationship between them. PMID:25748369

  6. Assessing the effect of cement-steel interface on well casing corrosion in aqueous CO2 environments

    Energy Technology Data Exchange (ETDEWEB)

    Han, Jiabin [Los Alamos National Laboratory; Carey, James W [Los Alamos National Laboratory; Zhang, Jinsuo [Los Alamos National Laboratory

    2010-01-01

    CO{sub 2} leakage is a critical safety concern for geologic storage. In wellbore environments, important leakage paths include the rock-cement and cement-casing interfaces. If the cement-casing interface is filled with escaping CO{sub 2}, the well casing directly contacts the CO{sub 2}. This can cause severe corrosion in the presence of water. This paper studies the effect of steel-cement interface gaps, ranging from 1 mm to 0 um, on casing corrosion. Corrosion kinetics were measured employing electrochemical techniques including linear polarization resistance, open circuit potential and electrochemical impedance spectroscopy. The experimental results showed that the corrosion of steel is not significant where the gap between steel and cement is small ({le} 100 {micro}m). Corrosion rates are controlled by the diffusion of corrosive species (H{sub 2}CO{sub 3} and H{sup +}) along the interface. In contrast, steel corrosion is severe in a broad gap where the corrosion process is limited only by the reaction kinetics of steel and corrosive species. The threshold leading to severe corrosion in terms of the cement-steel interface size (100 {micro}m) was determined. Our research clarifies a corrosion scenario at the cement-steel interface. Casing steel corrosion is initiated when attacked by corrosive species at the cement-steel interface. For relatively tight interfaces, this results in a slow thinning of the casing and expansion of the interface width. If the gap increases beyond the critical threshold size, the corrosion rate increases significantly, and a potentially damaging cycle of corrosion and interface expansion is developed.

  7. Well-Differentiated Liposarcoma, an Atypical Lipomatous Tumor, of the Mesentery: A Case Report and Review of the Literature

    Directory of Open Access Journals (Sweden)

    Takashi Yuri

    2011-03-01

    Full Text Available Mesenteric liposarcoma is a rare neoplasm. Here, we report the case of a 73-year-old Japanese man with a well-differentiated (WD liposarcoma of the mesentery. Due to rapid growth of the abdominal mass and abdominal insufficiency, a tumorectomy was performed. The excised tumor was 12.4 × 9.6 cm in size and weighed 548 g. Cut sections showed a lobulated yellow and/or grayish-colored appearance. The histological features were predominantly those of the sclerotic and lipoma-like variants of WD liposarcoma. The cytoplasm of most spindle cells was diffusely immunoreactive for CD34, while fat cells were positive for S-100 protein. Some spindle cell nuclei were positive for CDK4, and a few were positive for MDM2. The average Ki-67 proliferation index in tumor cells was 10%, and androgen receptor expression was detected in tumor cell nuclei. The present case and 11 cases identified from a literature search were reviewed. The WD mesenteric liposarcomas developed in patients in the fourth to seventh decades of life (mean age 57.9 years. The patients consisted of 7 men and 5 women. All tumors were larger than 10 cm in diameter at the time of surgery. Complete resection might be the only curative therapy for WD liposarcomas of the mesentery, but long-term follow-up is needed because of the possibility of a local recurrence of the tumor.

  8. Probabilistic risk analysis of casing drilling operation for an onshore Brazilian well; Analise probabilistica de risco de uma operacao de casing drilling para um poco terrestre no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Jacinto, Carlos M.C.; Petersen, Flavia C.; Placido, Joao C.R. [PETROBRAS, Rio de Janeiro, RJ (Brazil); Garcia, Pauli A.A. [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil)

    2008-07-01

    In the present paper, one presents an approach to hazard identification and risks quantification concerning the use of retrievable BHA, of a casing drilling system, in 12 1/4 phase of an onshore well. The adopted approach can be subdivided as: execution of a hazard and operability study; prioritization of critical deviance; modeling of critical deviance by mean of event sequence diagram, fault tree and Bayesian network; modeling and simulation of a dynamic decision tree and experts' opinion analysis. As results, one has obtained: the time distribution to achieve the different ends modeled in the decision tree, i.e., sidetrack, or operation canceling, or success; the probabilities to achieve each modeled end and all recommendation to improve the success probability. The approach proved to be efficient in order that it presents significant results to support the decisions involving the casing drilling operations. (author)

  9. Signal Feature Extraction and Quantitative Evaluation of Metal Magnetic Memory Testing for Oil Well Casing Based on Data Preprocessing Technique

    Directory of Open Access Journals (Sweden)

    Zhilin Liu

    2014-01-01

    Full Text Available Metal magnetic memory (MMM technique is an effective method to achieve the detection of stress concentration (SC zone for oil well casing. It can provide an early diagnosis of microdamages for preventive protection. MMM is a natural space domain signal which is weak and vulnerable to noise interference. So, it is difficult to achieve effective feature extraction of MMM signal especially under the hostile subsurface environment of high temperature, high pressure, high humidity, and multiple interfering sources. In this paper, a method of median filter preprocessing based on data preprocessing technique is proposed to eliminate the outliers point of MMM. And, based on wavelet transform (WT, the adaptive wavelet denoising method and data smoothing arithmetic are applied in testing the system of MMM. By using data preprocessing technique, the data are reserved and the noises of the signal are reduced. Therefore, the correct localization of SC zone can be achieved. In the meantime, characteristic parameters in new diagnostic approach are put forward to ensure the reliable determination of casing danger level through least squares support vector machine (LS-SVM and nonlinear quantitative mapping relationship. The effectiveness and feasibility of this method are verified through experiments.

  10. Well-posedness for the Navier-slip thin-film equation in the case of complete wetting

    Science.gov (United States)

    Giacomelli, Lorenzo; Gnann, Manuel V.; Knüpfer, Hans; Otto, Felix

    2014-07-01

    We are interested in the thin-film equation with zero-contact angle and quadratic mobility, modeling the spreading of a thin liquid film, driven by capillarity and limited by viscosity in conjunction with a Navier-slip condition at the substrate. This degenerate fourth-order parabolic equation has the contact line as a free boundary. From the analysis of the self-similar source-type solution, one expects that the solution is smooth only as a function of two variables (x,xβ) (where x denotes the distance from the contact line) with β={√{13}-14≈0.6514 irrational. Therefore, the well-posedness theory is more subtle than in case of linear mobility (coming from Darcy dynamics) or in case of the second-order counterpart (the porous medium equation). Here, we prove global existence and uniqueness for one-dimensional initial data that are close to traveling waves. The main ingredients are maximal regularity estimates in weighted L2-spaces for the linearized evolution, after suitable subtraction of a(t)+b(t)xβ-terms.

  11. A new experimental method to prevent paraffin - wax formation on the crude oil wells: A field case study in Libya

    Directory of Open Access Journals (Sweden)

    Elhaddad Elnori E.

    2015-01-01

    Full Text Available Wax formation and deposition is one of the most common problems in oil producing wells. This problem occurs as a result of the reduction of the produced fluid temperature below the wax appearance temperature (range between 46°C and 50°C and the pour point temperature (range between 42°C and 44°C. In this study, two new methods for preventing wax formation were implemented on three oil wells in Libya, where the surface temperature is, normally, 29°C. In the first method, the gas was injected at a pressure of 83.3 bar and a temperature of 65°C (greater than the pour point temperature during the gas-lift operation. In the second method, wax inhibitors (Trichloroethylene-xylene (TEX, Ethylene copolymers, and Comb polymers were injected down the casings together with the gas. Field observations confirmed that by applying these techniques, the production string was kept clean and no wax was formed. The obtained results show that the wax formation could be prevented by both methods.

  12. WIMP Dark Matter in a Well-Tempered Regime: A case study on Singlet-Doublets Fermionic WIMP

    CERN Document Server

    Banerjee, Shankha; Mukaida, Kyohei; Tsai, Yue-Lin Sming

    2016-01-01

    Serious searches for the weakly interacting massive particle (WIMP) have now begun. In this context, the most important questions that need to be addressed are: "How far can we cover the WIMP paradigm in future?" and "what is then the leftover remaining as unexplored regions in the future?". In our quest to answer these questions, we perform a comprehensive analysis of the WIMP paradigm in a completely model independent manner, by picking up a small but well-motivated patch of this paradigm: the well-tempered fermionic WIMP regime. After discussing the WIMP in general, we set up the simplest case of the minimal composition, namely the singlet-doublets WIMP model. We consider all available constraints from direct and indirect searches and also the predicted constraints coming from the near future and the future experiments. We thus obtain the current status, the near future prospects and the future prospects of this model in all its generality. We find that in the far future, the singlet-doublets WIMP model wi...

  13. Deriving Requirements for Pervasive Well-Being Technology From Work Stress and Intervention Theory: Framework and Case Study

    Science.gov (United States)

    Koldijk, Saskia; Kraaij, Wessel

    2016-01-01

    Background Stress in office environments is a big concern, often leading to burn-out. New technologies are emerging, such as easily available sensors, contextual reasoning, and electronic coaching (e-coaching) apps. In the Smart Reasoning for Well-being at Home and at Work (SWELL) project, we explore the potential of using such new pervasive technologies to provide support for the self-management of well-being, with a focus on individuals' stress-coping. Ideally, these new pervasive systems should be grounded in existing work stress and intervention theory. However, there is a large diversity of theories and they hardly provide explicit directions for technology design. Objective The aim of this paper is to present a comprehensive and concise framework that can be used to design pervasive technologies that support knowledge workers to decrease stress. Methods Based on a literature study we identify concepts relevant to well-being at work and select different work stress models to find causes of work stress that can be addressed. From a technical perspective, we then describe how sensors can be used to infer stress and the context in which it appears, and use intervention theory to further specify interventions that can be provided by means of pervasive technology. Results The resulting general framework relates several relevant theories: we relate “engagement and burn-out” to “stress”, and describe how relevant aspects can be quantified by means of sensors. We also outline underlying causes of work stress and how these can be addressed with interventions, in particular utilizing new technologies integrating behavioral change theory. Based upon this framework we were able to derive requirements for our case study, the pervasive SWELL system, and we implemented two prototypes. Small-scale user studies proved the value of the derived technology-supported interventions. Conclusions The presented framework can be used to systematically develop theory

  14. Emergent nested systems a theory of understanding and influencing complex systems as well as case studies in urban systems

    CERN Document Server

    Walloth, Christian

    2016-01-01

    This book presents a theory as well as methods to understand and to purposively influence complex systems. It suggests a theory of complex systems as nested systems, i. e. systems that enclose other systems and that are simultaneously enclosed by even other systems. According to the theory presented, each enclosing system emerges through time from the generative activities of the systems they enclose. Systems are nested and often emerge unplanned, and every system of high dynamics is enclosed by a system of slower dynamics. An understanding of systems with faster dynamics, which are always guided by systems of slower dynamics, opens up not only new ways to understanding systems, but also to effectively influence them. The aim and subject of this book is to lay out these thoughts and explain their relevance to the purposive development of complex systems, which are exemplified in case studies from an urban system. The interested reader, who is not required to be familiar with system-theoretical concepts or wit...

  15. Casing selection and correlation technology for ultra-deep, ultra-high pressure, high H{sub 2}S gas wells

    Energy Technology Data Exchange (ETDEWEB)

    Sun, Y. [CCDC Drilling and Production Technology Research Inst., Guanghan, Sichuan (China); Southwest Petroleum Univ., Beijing (China). State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation; Lin, Y.; Taihe, S. [Southwest Petroleum Univ., Beijing (China). State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation; Liao, P.; Shen, X. [Southwest Oil and Gas Co., Daxian (China). Northeast Sichuan Gas Field; Liu, H.; Zhao, H. [CCDC Drilling and Production Technology Research Inst., Guanghan, Sichuan (China)

    2010-07-01

    This poster highlighted some economical and suitable methods of choosing well casings for ultra-deep, ultra-high pressure, ultra-high temperature wells where acid gas injection is used for enhanced recovery. In China's northern Sichuan province, such wells tend to be sour. Casing failures have occurred at well temperatures below 90 degrees C due to the severity of the sour environment and sulphide stress cracking (SSC) of carbon and low-alloy steels. The plastic creep of rock salt, gypsum and clay shale may create high external collapse pressure on the outside surface of the casing. Sulphur resistant casings, such as C110 are required to meet ultra-high pressure criteria of more than 100 MPa, and also to meet high sulphur resistance criteria. This poster outlined an economical and suitable method of string design combined with sulphur resistance packer completion technology to address this current problem. tabs., figs.

  16. Statistical factor analysis technique for characterizing basalt through interpreting nuclear and electrical well logging data (case study from Southern Syria).

    Science.gov (United States)

    Asfahani, Jamal

    2014-02-01

    Factor analysis technique is proposed in this research for interpreting the combination of nuclear well logging, including natural gamma ray, density and neutron-porosity, and the electrical well logging of long and short normal, in order to characterize the large extended basaltic areas in southern Syria. Kodana well logging data are used for testing and applying the proposed technique. The four resulting score logs enable to establish the lithological score cross-section of the studied well. The established cross-section clearly shows the distribution and the identification of four kinds of basalt which are hard massive basalt, hard basalt, pyroclastic basalt and the alteration basalt products, clay. The factor analysis technique is successfully applied on the Kodana well logging data in southern Syria, and can be used efficiently when several wells and huge well logging data with high number of variables are required to be interpreted.

  17. Ensuring full-capacity production in case of liquid loading in gas wells; Aufrechterhalten der Produktion aus verwaessernden Erdgasbohrungen

    Energy Technology Data Exchange (ETDEWEB)

    Reinicke, K.M. [Technische Univ. Clausthal (Germany). Inst. fuer Erdoel- und Erdgastechnik; Albrecht, I. [Schlumberger Holding GmbH, Hannover (Germany); Thurow, M. [ILF Consulting Engineers, Muenchen (Germany)

    2007-09-13

    In the late production stages, water production from natural gas wells may become a problem that may require abandoning the well, thus losing valuable productive assets. In a joint project of organisations of the Deutsche Wissenschaftliche Gesellschaft fuer Erdoel, Erdgas und Kohle, a status report was made in 2005, and best practice methods for dewatering natural gas wells were identified. This contribution presents some of the results: common methods for improved liquid unloading from natural gas wells, preconditions for their application, experience of the industries in this field, elements of the selection and planning process, and an outlook. (orig.)

  18. Well-Being and Human-Animal Interactions in Schools: The Case of "Dog Daycare Co-Op"

    Science.gov (United States)

    Pinto, Laura Elizabeth; Foulkes, Donna

    2015-01-01

    This study draws on Martha Nussbaum's (2000) account of the nature of human well-being in order to explore the role of animals in formal education settings. Nussbaum's capabilities approach identifies the ability "to have concern for and live with other animals, plants and the environment" (p. 80) as a necessary component for well-being.…

  19. Basalt identification by interpreting nuclear and electrical well logging measurements using fuzzy technique (case study from southern Syria).

    Science.gov (United States)

    Asfahani, J; Abdul Ghani, B; Ahmad, Z

    2015-11-01

    Fuzzy analysis technique is proposed in this research for interpreting the combination of nuclear and electrical well logging data, which include natural gamma ray, density and neutron-porosity, while the electrical well logging include long and short normal. The main objective of this work is to describe, characterize and establish the lithology of the large extended basaltic areas in southern Syria. Kodana well logging measurements have been used and interpreted for testing and applying the proposed technique. The established lithological cross section shows the distribution and the identification of four kinds of basalt, which are hard massive basalt, hard basalt, pyroclastic basalt and the alteration basalt products, clay. The fuzzy analysis technique is successfully applied on the Kodana well logging data, and can be therefore utilized as a powerful tool for interpreting huge well logging data with higher number of variables required for lithological estimations.

  20. Identity profiles and well-being of multicultural immigrants: The case of Canadian immigrants living in Quebec

    Directory of Open Access Journals (Sweden)

    Joelle eCarpentier

    2013-02-01

    Full Text Available Studies worldwide point toward increased risk of mental health issues among immigrants. Immigrants’ ability to integrate the cultural identity of their new country has been found to be a key factor in their psychological well-being. Even though researchers agree on the crucial role of identity integration in immigrants’ well-being, the current literature has two main limitations: 1 researchers do not agree on the importance that should be allocated to each of the cultural identities, and 2 research has focused on bicultural individuals as opposed to multicultural individuals. The present paper proposes to study Canadians immigrants living in the province of Quebec who, because of the political and linguistic situation of the province, face the challenge of integrating two new cultural identities (Quebecer and Canadian to their original one. Specifically, cluster analysis was used to observe identity profiles that naturally emerge among 120 Canadian immigrants from the province of Quebec. Identity profiles were then compared on various indices of well-being to identify the optimal identity structure. In total, four identity profiles emerged, differing in their levels of identity coherence (i.e., similar levels of identification with each group and identification to either the original group or the Quebecers. ANOVA results confirmed that identity profiles differed in their average level of well-being. First, immigrants with coherent profiles displayed higher levels of well-being. Second, among incoherent profiles, the profile where identification to the original group is the highest showed the greatest well-being. Implications suggest that in order to maximize immigrants’ well-being, psychologists should focus on the coherence between cultural groups as well as identification to the original group.

  1. Integrating staff well-being into the Primary Health Care system: a case study in post-conflict Kosovo

    OpenAIRE

    van der Veen, Albertien; van Pietersom, Tineke; Lopes Cardozo, Barbara; Rushiti, Feride; Ymerhalili, Genc; Agani, Ferid

    2015-01-01

    Background Staff well-being including stress awareness and stress management skills is usually not a priority in (mental) health policies. In Kosovo, the level of stress amongst primary health care (PHC) professionals is high because health professionals are part of the population seriously affected by conflict. The need to support staff and look after their well-being was recognised by the Director of the Centre for Development of Family Medicine, Head of Primary Care. In response, the Antar...

  2. Well-being and human-animal interactions in schools: The case of "Dog Daycare Co-Op"

    Directory of Open Access Journals (Sweden)

    Laura Elizabeth Pinto

    2015-10-01

    Full Text Available This paper draws on Martha Nussbaum’s account of the nature of human well-being to explore the role of animals in formal education settings. Nussbaum equates well-being with human flourishing, and argues that people live well when engaged in essential functions that are particular capabilities, each a necessary but insufficient contributor to well-being. One of these capabilities is the ability to “to have concern for and live with other animals, plants and the environment.” Yet, this condition of well-being remains largely unexplored among in education. In recent years, the benefits of human-animal interaction in education settings has been researched and discussed in the social sciences, particularly  the use of dogs to aid reluctant readers in literacy development, and the use of therapy dogs in universities during final examination blocks. This paper presents findings of one particular research project of the effects of a unique, Canadian school-based cooperative education program, “Under One Woof,” in which students work with animals.  Based on interviews, students’ own stories of the impact of animal interaction – particularly in light of other challenges they faced academically and socially – appear to support other empirical accounts of positive effects of animals in education settings, and offer insight into the nature and effects of human-animal interaction as an element of well-being.

  3. CHANGING PATTERNS IN HOTEL ROOM DEMAND – CASE STUDY OF THE AQUATICUM DEBRECEN THERMAL AND WELLNESS HOTEL

    OpenAIRE

    Hevessy, Gabor

    2011-01-01

    Aquaticum Debrecen Thermal and Wellness Hotel is a very successful lodging property not only in Debrecen but also in the Northern Great Plain Region and in the Eastern part of Hungary and in point of fact in Hungary. In the past years Aquaticum Thermal and Wellness Hotel has been the leader in the region by revenue per available rooms (RevPAR). RevPAR indicates the overall performance of properties, accordingly it is the most commonly used statistical indicator in comparison to competitors in...

  4. The consolidation of deep tube well technology in safe drinking water provision: the case of arsenic mitigation in rural Bangladesh

    NARCIS (Netherlands)

    Kundu, D.K.; Vliet, van B.J.M.; Gupta, A.

    2016-01-01

    This paper explains why and how deep tube well as a safe drinking water technology has become dominant in mitigating the arsenic crisis in rural Bangladesh. We do so by applying insights from the Multi-Level Perspective on transitions in explaining changes in the safe socio-technical drinking water

  5. The Role of Subjective Well-Being in Co-Designing Open-Design Assistive Devices; design case study

    NARCIS (Netherlands)

    De Couvreur, L.; Dejonghe, W.; Detand, J.; Goossens, R.

    2013-01-01

    In this paper we explore the role of subjective well-being within the process of making together a personalized assistive device. Through a process of social product adaptation, assistive artifacts become part of occupational therapy and co-evolve with clients. Personal digital fabrication tools ena

  6. Measuring religiosity and its effects on personal well-being: a case study of Muslim female academicians in Malaysia.

    Science.gov (United States)

    Achour, Meguellati; Grine, Fadila; Mohd Nor, Mohd Roslan; MohdYusoff, Mohd Yakub Zulkifli

    2015-06-01

    This study seeks to measure religiosity in an Islamic context and to assess its effects on the personal well-being of Muslims. The determinants of religiosity included under this research are prayer, beliefs, and worship. This research also attempts to examine the coping strategies Muslims use to deal with life problems and changes such as prayer, supplication, trust and reliance on God, remembrance of death, and concept of life after death. Today, many scales of religiosity are being put into use among Muslims. This study measures religiosity and its effects on the well-being of Muslim academicians. The researchers used 315 Muslim female of academic staff as respondents, working in Research Universities in the Klang Valley such as University of Malaya, National University and Putra University area of Kuala Lumpur, Malaysia. Their ages ranged from 30 to 60 years. The results of this study show that there exists a positive yet significant correlation between personal well-being and religiosity. The well-being also shows significant positive correlations with beliefs and worship and prayer.

  7. Well-log based prediction of thermal conductivity of sedimentary successions: a case study from the North German Basin

    DEFF Research Database (Denmark)

    Fuchs, Sven; Förster, Andrea

    2014-01-01

    Data on rock thermal conductivity (TC) are important for the quantification of the subsurface temperature regime and for the determination of heat flow. If drill core is not retrieved from boreholes and thus no laboratory measurement of TC can be made, other methods are desired to determine TC. One...... German Basin. The theoretical approach comprised the calculation of TC from well-log response values for artificial sets of mineral assemblages consisting of variable contents of 15 rock-forming minerals typical for sedimentary rocks. The analysis shows different correlation trends between TC...... and the theoretical well-log response in dependence on the mineral content, affecting the rock matrix TC, and on porosity. The analysis suggests the development of empirical equations for the prediction of matrix TC separately for different groups of sedimentary rocks. The most valuable input parameters...

  8. THE ABILITY TO PROVIDE WELL QUALIFIED SOFTWARE ENGINEERING GRADUATES TO THE SOFTWARE INDUSTRY CASE STUDY: JORDANIAN UNIVERSITIES

    OpenAIRE

    Mohammad Shkoukani

    2013-01-01

    The new trend in software engineering research is how to provide software engineering industry with well qualified software engineering graduates; this trend has been appeared because there is an obvious difference between the industry needs and the actual supply from software engineering departments. This paper will introduce briefly software engineering and software development process then it will mention the main properties of software engineering, A brief discussion about software engine...

  9. Integrated well-completion strategies with CHOPS to enhance heavy-oil production : a case study in Fula Oilfield

    Energy Technology Data Exchange (ETDEWEB)

    Wang, X.; Zou, H. [Society of Petroleum Engineers, Kuala Lumpur (Malaysia)]|[Chinese Academy of Sciences, Beijing (China); Li, G.; Nie, C. [China National Oil and Gas Exploration and Development Corp., Beijing (China); Chen, J. [Shengli Oil Field (China)

    2005-11-01

    Cold Heavy Oil Production with Sand (CHOPS) is an enhanced oil recovery method that induces sand production to form a network of wormholes that increase the porosity and permeability of a formation. Under proper conditions, CHOPS can improve formation flow characteristics. Integrated well completion strategies that were used to increase oil production at Fula oil field on the south flank of Mughad Basin in Sudan were described. Limited sand influx provided a means for effective sand control while eliminating the need for conventional sand control processes. Cold heavy oil production with limited sand influx requires optimized completion methods to stimulate sand production, thereby reducing oil flow resistance and prolonging the sand removal operation cycle. Completion tests were performed in terms of different formation conditions including perforating completion; perforating and full sand control completion by screen liner; and perforating and limited sand control completion by slotted liner. Particle settling experiments for different sizes of sand samples for were also performed using clear water, guar gel and silicone oil. The wellbore sand washing treatment was described along with surface oil and separation technologies. The lifting capability of the sand for crude oil was also examined. Results indicate that 0.9 mm of sand moved up with the heavy oil to the surface while 510 mPa.s of viscous oil was lifted in 3.5 inch tubing. The use of a progressing cavity pump initiated sand influx but only 15 per cent solids were controlled to form wormholes to improve the permeability of the pay zone. Twenty heavy oil wells were equipped with progressing cavity pumps, and the average oil rate of each well was increased from 175 bopd to 580 bopd. It was noted that the best well had a peak production rate of 1200 bopd. 4 refs., 2 tabs., 9 figs.

  10. DRINKING WATER QUALITY IN WELLS FROM AN AREA AFFECTED BY FLOOD EVENTS: CASE STUDY OF CURVATURE SUB-CARPATHIANS, ROMANIA

    Directory of Open Access Journals (Sweden)

    ŞENILĂ M.

    2015-03-01

    Full Text Available The present study evaluates the chemical parameters (inorganic anions and metals of drinking water of twenty-four wells and the presence of Escherichia coli in ten selected wells located in two villages from Buzau and Prahova Counties, in Curvature Sub-Carpathians, Romania, a rural area frequently affected by flood events. Water samples were collected in July 2014. Concerntrations of fluorides, nitrites, chlorides and phosphates were below the maximum allowable concentrations (MACs for drinking water established by European legislation (Drinking Water Directive 98/83/CE in all the analysed samples. Concentration of nitrates exceeded MAC (50 mg L-1 in five samples, while concentration of sulphates exceeded MAC (250 mg L-1 in two samples. Among the analysed metals, Mn exceeded MAC (50 μg L-1 in two samples, while Cu, Pb, Zn, Fe, Na, Cd, Cr, Cu, Ni and As concentrations did not exceeded the corresponding MACs. E. coli (over 2000 UFC 100 mL-1 was found in six water samples. The results show that majority of the studied parameters were below the threshold limits, however in some of the studied wells the water was found to be contaminated both by some chemical pollutants and by E. coli, which prepresent a risk for local population health.

  11. THE ABILITY TO PROVIDE WELL QUALIFIED SOFTWARE ENGINEERING GRADUATES TO THE SOFTWARE INDUSTRY CASE STUDY: JORDANIAN UNIVERSITIES

    Directory of Open Access Journals (Sweden)

    Mohammad Shkoukani

    2013-03-01

    Full Text Available The new trend in software engineering research is how to provide software engineering industry with well qualified software engineering graduates; this trend has been appeared because there is an obvious difference between the industry needs and the actual supply from software engineering departments. This paper will introduce briefly software engineering and software development process then it will mention the main properties of software engineering, A brief discussion about software engineering graduates and educators will be presented in this paper after that it will determines whether there are well qualified software engineering graduates in the Jordanian universities. Finally it will discuss a proposed model designed by the researcher to increase software engineering graduates’ quality, qualification and productivity in Jordanian universities. The result of the study (76 respondents of academic staff of software engineering department indicated thatunfortunately, there are no well qualified software engineering graduates in the Jordanian universities. Another indication was that the designed model would have a significant impact to increase the quality, qualification and productivity of software engineering graduates in Jordanian universities.

  12. Temperature histories in geothermal wells: Survey of rock thermomechanical properties and drilling, production, and injection case studies

    Science.gov (United States)

    Goodman, M. A.

    1981-07-01

    Thermal and mechanical properties for geothermal formations are tabulated for a range of temperatures and stress conditions. Data were obtained from the technical literature and direct contacts with industry. Heat capacity, conductivity, diffusivity and undisturbed geothermal profiles are presented. Mechanical properties include Youngs modulus and Poisson ratio. Two GEOTEMP thermal simulations of drilling, production and injection are reported. Actual drilling, production, and injection histories were simulated. Results are documented in the form of printed GEOTEMP output and plots of temperatures versus depth, radius, and time. Wellbore temperatures during drilling as a function of depth; bit temperatures over the drilling history; cement temperatures from setting to the end of drilling; and casing and formation temperatures during drilling, production, and injection are discussed.

  13. Inaccuracies inthe history ofa well-known introduction:a case study ofthe Australian House Sparrow (Passer domesticus)

    Institute of Scientific and Technical Information of China (English)

    Samuel C. Andrew; Simon C. Griffth

    2016-01-01

    Background: Modern ecosystems contain many invasive species as a result of the activity of acclimatisation socie-ties that operated in the second half of the nineteenth century, and these species provide good opportunities for studying invasion biology. However, to gain insight into the ecological and genetic mechanisms that determine the rate of colonization and adaptation to new environments, we need a good understanding of the history of the intro-duced species, and a knowledge of the source population, timing, and number of individuals introduced is particu-larly important. However, any inaccuracies in the history of an introduction will affect subsequent assumptions and conclusions. Methods: Focusing on a single well-known species, the House Sparrow (Passer domesticus), we have documented the introduction into Australia using primary sources (e.g. acclimatisation records and newspaper articles). Results: Our revised history differs in a number of signiifcant ways from previous accounts. Our evidence indicates that the House Sparrow was not solely introduced from source populations in England but also from Germany and most strikingly also from India—with the latter birds belonging to a different race. We also clarify the distinction between the number released and the number of founders, due to pre-release captive breeding programs, as well as identifying inaccuracies in a couple of well-cited sources with respect to the range expansion of the introduced populations. Conclusions: Our work suggests that caution is required for those studying introductions using the key sources of historical information and ideally should review original sources of information to verify the accuracy of published accounts.

  14. Does the Well-Being of Individuals with Down Syndrome and Dementia Improve When Using Life Story Books and Rummage Boxes? A Randomized Single Case Series Experiment

    Science.gov (United States)

    Crook, Nicola; Adams, Malcolm; Shorten, Nicola; Langdon, Peter E.

    2016-01-01

    Background: This study investigated whether a personalized life story book and rummage box enhanced well-being and led to changes in behaviour for people with Down syndrome (DS) who have dementia. Materials and Methods: A randomized single case series design was used with five participants who had DS and a diagnosis of dementia. Participants were…

  15. Related or not? Development of spontaneous Creutzfeldt–Jakob disease in a patient with chronic, well-controlled HIV: A case report and review of the literature

    Science.gov (United States)

    Babi, M-Alain; Kraft, Bryan D; Sengupta, Sweta; Peterson, Haley; Orgel, Ryan; Wegermann, Zachary; Lugogo, Njira L; Luedke, Matthew W

    2016-01-01

    Background: We report a novel case of a rare disease: spontaneous Creutzfeldt–Jakob disease in a patient with well-controlled HIV. We explore the relationship between spontaneous Creutzfeldt–Jakob disease and HIV. Case report: A 66-year-old man with long-standing, well-controlled HIV infection presented with 3 months of progressive, subacute neurocognitive decline. His symptoms included conceptual apraxia, apathy, memory impairment, and gait disturbance, and were initially attributed to depressive “pseudo-dementia.” Unfortunately, the patient’s symptoms rapidly progressed and he ultimately succumbed to his illness. Autopsy confirmed the clinical diagnosis of spontaneous Creutzfeldt–Jakob disease. Discussion: This case highlights spontaneous Creutzfeldt–Jakob disease as a rare terminal illness in the setting of well-controlled chronic HIV. To our knowledge, this is the first report of a patient with chronic and previously well-controlled HIV infection dying from a prion disease. Despite the very different epidemiology and pathophysiology of HIV and spontaneous Creutzfeldt–Jakob disease, this case does raise questions of whether certain host genetic factors could predispose to both conditions, albeit currently, there is no clear causal link between HIV and spontaneous Creutzfeldt–Jakob disease.

  16. Flow with it! Well-being at work : case Café & Bar Time Out in Rantasipi Laajavuori

    OpenAIRE

    Hämäläinen, Elli; Muhonen, Sanna

    2011-01-01

    This thesis was assigned by Café & Bar Time Out that operates in the Rantasipi Laajavuori Spa Hotel. The aim for the research was to survey work-related well-being among the employees and offer improvement ideas for the company based on the results. The research was implemented by using a quantitative research method. The data collection was done by a questionnaire that was given to nine employees of Café & Bar Time Out in May 2011, including the restaurant manager, duty managers and par...

  17. Machine learning with neural networks - a case study of estimating thermal conductivity with ancient well-log data

    Science.gov (United States)

    Harrison, Benjamin; Sandiford, Mike; McLaren, Sandra

    2016-04-01

    Supervised machine learning algorithms attempt to build a predictive model using empirical data. Their aim is to take a known set of input data along with known responses to the data, and adaptively train a model to generate predictions for new data inputs. A key attraction to their use is the ability to perform as function approximators where the definition of an explicit relationship between variables is infeasible. We present a novel means of estimating thermal conductivity using a supervised self-organising map algorithm, trained on about 150 thermal conductivity measurements, and using a suite of five electric logs common to 14 boreholes. A key motivation of the study was to supplement the small number of direct measurements of thermal conductivity with the decades of borehole data acquired in the Gippsland Basin to produce more confident calculations of surface heat flow. A previous attempt to generate estimates from well-log data in the Gippsland Basin using classic petrophysical log interpretation methods was able to produce reasonable synthetic thermal conductivity logs for only four boreholes. The current study has extended this to a further ten boreholes. Interesting outcomes from the study are: the method appears stable at very low sample sizes (< ~100); the SOM permits quantitative analysis of essentially qualitative uncalibrated well-log data; and the method's moderate success at prediction with minimal effort tuning the algorithm's parameters.

  18. Comparing emergy accounting with well-known sustainability metrics: The case of Southern Cone Common Market, Mercosur

    International Nuclear Information System (INIS)

    The quality and the power of human activities affect the external environment in different ways that can be measured and evaluated by means of several approaches and indicators. While the scientific community has been publishing several proposals for sustainable development indicators, there is still no consensus regarding the best approach to the use of these indicators and their reliability to measure sustainability. It is important, therefore, to question the effectiveness of sustainable development indicators in an effort to continue in the search for sustainability. This paper compares the results obtained with emergy accounting with five global Sustainability Metrics (SMs) proposed in the literature to verify if metrics are communicating coherent and similar information to guide decision makers towards sustainable development. Results obtained using emergy indices are discussed with the aid of emergy ternary diagrams. Metrics are confronted with emergy results, and the degree of variability among them is analyzed using a correlation matrix created for the Mercosur nations. The contrast of results clearly shows that metrics arrive at different interpretations about the sustainability of the nations studied, but also that some metrics may be grouped and used more prudently. Mercosur is presented as a case study to highlight and explain the discrepancies and similarities among Sustainability Metrics, and to expose the extent of emergy accounting.

  19. Comparing emergy accounting with well-known sustainability metrics: The case of Southern Cone Common Market, Mercosur

    Energy Technology Data Exchange (ETDEWEB)

    Giannetti, B.F. [Programa de Pos-Graduacao em Engenharia de Producao, Universidade Paulista, R. Dr. Bacelar 1212, Cep 04026-002, Sao Paulo (Brazil); Almeida, C.M.V.B., E-mail: cmvbag@unip.b [Programa de Pos-Graduacao em Engenharia de Producao, Universidade Paulista, R. Dr. Bacelar 1212, Cep 04026-002, Sao Paulo (Brazil); Bonilla, S.H. [Programa de Pos-Graduacao em Engenharia de Producao, Universidade Paulista, R. Dr. Bacelar 1212, Cep 04026-002, Sao Paulo (Brazil)

    2010-07-15

    The quality and the power of human activities affect the external environment in different ways that can be measured and evaluated by means of several approaches and indicators. While the scientific community has been publishing several proposals for sustainable development indicators, there is still no consensus regarding the best approach to the use of these indicators and their reliability to measure sustainability. It is important, therefore, to question the effectiveness of sustainable development indicators in an effort to continue in the search for sustainability. This paper compares the results obtained with emergy accounting with five global Sustainability Metrics (SMs) proposed in the literature to verify if metrics are communicating coherent and similar information to guide decision makers towards sustainable development. Results obtained using emergy indices are discussed with the aid of emergy ternary diagrams. Metrics are confronted with emergy results, and the degree of variability among them is analyzed using a correlation matrix created for the Mercosur nations. The contrast of results clearly shows that metrics arrive at different interpretations about the sustainability of the nations studied, but also that some metrics may be grouped and used more prudently. Mercosur is presented as a case study to highlight and explain the discrepancies and similarities among Sustainability Metrics, and to expose the extent of emergy accounting.

  20. Comparing emergy accounting with well-known sustainability metrics. The case of Southern Cone Common Market, Mercosur

    Energy Technology Data Exchange (ETDEWEB)

    Giannetti, B.F.; Almeida, C.M.V.B.; Bonilla, S.H. [Programa de Pos-Graduacao em Engenharia de Producao, Universidade Paulista, R. Dr. Bacelar 1212, Cep 04026-002, Sao Paulo (Brazil)

    2010-07-15

    The quality and the power of human activities affect the external environment in different ways that can be measured and evaluated by means of several approaches and indicators. While the scientific community has been publishing several proposals for sustainable development indicators, there is still no consensus regarding the best approach to the use of these indicators and their reliability to measure sustainability. It is important, therefore, to question the effectiveness of sustainable development indicators in an effort to continue in the search for sustainability. This paper compares the results obtained with emergy accounting with five global Sustainability Metrics (SMs) proposed in the literature to verify if metrics are communicating coherent and similar information to guide decision makers towards sustainable development. Results obtained using emergy indices are discussed with the aid of emergy ternary diagrams. Metrics are confronted with emergy results, and the degree of variability among them is analyzed using a correlation matrix created for the Mercosur nations. The contrast of results clearly shows that metrics arrive at different interpretations about the sustainability of the nations studied, but also that some metrics may be grouped and used more prudently. Mercosur is presented as a case study to highlight and explain the discrepancies and similarities among Sustainability Metrics, and to expose the extent of emergy accounting. (author)

  1. The Dual Action of Varunadi Kwath in Renal Calculi as well as Uterine Fibroid- A Case Study

    Directory of Open Access Journals (Sweden)

    Padavi D. M.

    2015-09-01

    Full Text Available Mutrashmari (Renal Calculi is very common disorder. This distressing urinary disorder affects around 5-7 million people in India [11]. The chances of recurrence are always high and the surgery having disadvantage of high cost. The available treatment in modern science is only conservative and surgical in this present study an effort was made to evaluate the role of Varunadi Kwath in Mutrashmari. The main aim of this particular study was inclined towards the disintegration, dissolution, dislodgement and expulsion of renal calculi. The contents of Varunadi Kwath are easily available, economical and are easy to administer, which are having Anti-inflammatory, Diuretic and Antilithic properties. A case of renal calculi with uterine fibroid was diagnosed and the treatment was given for a period of 9 months. The size of the calculus was studied by periodic ultrasonography; the symptoms Mutrakruchrata (Dysuria, Shula (Pain in abdomen, Sadaha Mutrata (Burning micturition are significantly reduced within less than 45 days and total expulsion of calculi in less than 180 days.

  2. On well-posedness of the plasma-vacuum interface problem: the case of non-elliptic interface symbol

    CERN Document Server

    Trakhinin, Yuri

    2015-01-01

    We consider the plasma-vacuum interface problem in a classical statement when in the plasma region the flow is governed by the equations of ideal compressible magnetohydrodynamics, while in the vacuum region the magnetic field obeys the div-curl system of pre-Maxwell dynamics. The local-in-time existence and uniqueness of the solution to this problem in suitable anisotropic Sobolev spaces was proved in [P. Secchi, Y. Trakhinin, Nonlinearity 27 (2014), 105-169], provided that at each point of the initial interface the plasma density is strictly positive and the magnetic fields on either side of the interface are not collinear. The non-collinearity condition appears as the requirement that the symbol associated to the interface is elliptic. We now consider the case when this symbol is not elliptic and study the linearized problem, provided that the unperturbed plasma and vacuum non-zero magnetic fields are collinear on the interface. We prove a basic a priori $L^2$ estimate for this problem under the (generaliz...

  3. THE RELATIONSHIP BETWEEN IMMIGRATION, ACCULTURATION AND PSYCHOLOGICAL WELL-BEING THE CASE OF TURKISH YOUTH IN AUSTRIA

    Directory of Open Access Journals (Sweden)

    Levent KIYLIOGLU

    2015-06-01

    Full Text Available Psychological research in culturally plural societies has traditionally been divided into two domains: acculturation and ethnic relations. Berry’s model of acculturation and psychological well-being is highly regarded and widely recognized as in the field. His two-dimensional model of acculturation is based upon the multicultural ideology where individuals and groups are given the opportunity to choose among various elements of ethnic and host cultures to form their own unique blends of identity and culture. The findings support the Berry’s proposal that acculturation is two-dimensional (ethnic/cultural and host society identification for acculturating immigrants. But the process of acculturation is different depending on the life domains being considered. Youngsters do not endorse both cultures to the same degree in all domains, which means acculturation preferences for Turkish youngsters between the ages of 12-15 are domain dependent. In terms of average point acculturation preferences, Turkish youth endorsed integration more than any other acculturation strategies. Significant correlation was found among self-esteem and separation acculturation attitude for reading books domain. Second significant correlation was found among self-esteem and margina¬lization acculturation attitude for work domain.

  4. Case Report of a Well-Differentiated Papillary Mesothelioma of the Tunica Vaginalis in an Undescended Testis With Review of Literature.

    Science.gov (United States)

    Parcesepe, Pietro; Sina, Sokol; Zanella, Caterina; Pancione, Massimo; Giuliani, Jacopo; Detogni, Paolo; Curti, Pierpaolo; Bonetti, Andrea; Manfrin, Erminia; Remo, Andrea

    2016-08-01

    Well-differentiated papillary mesothelioma (WDPM) affecting the tunica vaginalis testis is a rare tumor, and very little is known about the clinicopathological spectrum of this variant as a distinct entity. Most patients with WDPM suffer from scrotal pain or swelling, but hydrocele seems to be the most common presenting symptom. These lesions are usually not aggressive and are accompanied by an indolent clinical behavior. In this article, we report the first case known of WDPM in an undescended testis, and in addition, we review the literature for similar cases. PMID:26873338

  5. A limiter-based well-balanced discontinuous Galerkin method for shallow-water flows with wetting and drying: One-dimensional case

    Science.gov (United States)

    Vater, Stefan; Beisiegel, Nicole; Behrens, Jörn

    2015-11-01

    An important part in the numerical simulation of tsunami and storm surge events is the accurate modeling of flooding and the appearance of dry areas when the water recedes. This paper proposes a new algorithm to model inundation events with piecewise linear Runge-Kutta discontinuous Galerkin approximations applied to the shallow water equations. This study is restricted to the one-dimensional case and shows a detailed analysis and the corresponding numerical treatment of the inundation problem. The main feature is a velocity based "limiting" of the momentum distribution in each cell, which prevents instabilities in case of wetting or drying situations. Additional limiting of the fluid depth ensures its positivity while preserving local mass conservation. A special flux modification in cells located at the wet/dry interface leads to a well-balanced method, which maintains the steady state at rest. The discontinuous Galerkin scheme is formulated in a nodal form using a Lagrange basis. The proposed wetting and drying treatment is verified with several numerical simulations. These test cases demonstrate the well-balancing property of the method and its stability in case of rapid transition of the wet/dry interface. We also verify the conservation of mass and investigate the convergence characteristics of the scheme.

  6. Hanford wells

    Energy Technology Data Exchange (ETDEWEB)

    McGhan, V.L.; Damschen, D.W.

    1977-06-01

    The Hanford Site contains about 2200 wells constructed from pre-Hanford Works days to the present. As of June 1977, about 1900 wells still exist, and about 850 of these existing wells were drilled to the ground-water table. About 700 of these wells (including about 24 farm wells) still contain water. The others have become dry through infiltration of sediments or a general lowering of the water table in their vicinity. This report, providing the most complete documentation of wells in and adjacent to the Hanford Site, supersedes all previous compilations of Hanford wells.

  7. Well Spacing for Horizontal Wells

    Directory of Open Access Journals (Sweden)

    C.D.S. Keuengoua

    2011-06-01

    Full Text Available In the developing phase of a hydrocarbon reservoir and planning for drilling the production wells, it is necessary to drill the wells in an appropriate spacing to achieve maximum economic revenues during the reservoir life span. Well spacing which is the real location and interrelationship between producing oil or gas wells in an oil field is an important parameter. It is determined for the maximum ultimate production of a given reservoir and should be taken in consideration during well planning to avoid drilling of unnecessary wells. This study presents the concept of drainage area on horizontal well and horizontal productivity indices with different equations and their applications. A user friendly Excel Spreadsheet program was developed to calculate the productivity values of horizontal wells using three major available productivity equations. Also, the developed spreadsheet program was used to evaluate the effect of well spacing on the productivities of horizontal wells using productivity index approach and drainage area concept. It also helps to review the comparison between vertical and horizontal wells spacing based on drainage area concept. This program was validated, and then was used to study the effect of horizontal well length on the ratio of horizontal well productivity to vertical well productivity. The results show that higher ratio of horizontal well productivity to vertical well productivity values are obtained with increase length of the horizontal well. It is a very useful tool for making decision about the application of well spacing for horizontal wells.

  8. 某井高强度套管断裂原因分析%Fracture Analysis of High-strength Casing in One Well

    Institute of Scientific and Technical Information of China (English)

    文志明; 乔永波; 吕拴录; 白登相; 盛勇; 刘军严; 乐法国; 石桂军; 徐永康; 李进福

    2015-01-01

    This paper gives a thorough investigation on pipe sticking cause during lifting drilling stem in a well. It is shown that pipe stick-ing occurred because the bit 45°bevel was hitched by discontinuous casing per check all the drilling stem elements. It is proved by MIT ima-ging analysis that casing pipe body fractured and bit 45°bevel was hanged by the upper casing fracture. Based on analysis on stratum struc-ture, well hole dimension, fatigue load borne by the casing string, and the casing material property,the possibility of casing rupture due to overload is eliminated. It is considered that there are pipe sticking possibilities per analyzing casing fracture position and morphology, so some prevention measures from pipe sticking should be taken during drilling.%文章对某井起钻遇卡原因进行了详细调查分析。对起出的钻具检查结果表明,钻柱在上提过程中在套管内遇卡的原因是钻头上部45°斜面被不连续的套管挂住。通过采用多井径成像测井,证明套管管体发生了断裂,挂住钻头上部45°斜面的正是套管上断口。通过对地层结构、井眼尺寸、疲劳载荷、磨损和材料性能等方面对套管断裂的影响进行了分析,排除了套管过载断裂的可能性。通过对套管断裂形貌进行分析,认为该井经过磨铣之后在起下钻过程中仍然有阻卡的可能,在后续钻井过程中应采取一定的预防措施。

  9. Failure Analysis of Gas Well Casing Threaded Connection%气井用套管螺纹接头失效分析

    Institute of Scientific and Technical Information of China (English)

    闫凯; 孙晶; 张鸿博; 杨力能; 李昱坤

    2012-01-01

    N80 grade steel casing which used in gas wells failed after being run in well. The macroscopic observation and mechanical properties and chemical composition analysis of the failure joints were done. Thread parameters and appearance of the same batch unused casing connection were inspected. According to well site condition, it was known that failure reason of threaded connection was defects of connection and exceeded torque, and the safety proposal was provided at last.%针对某气田开采井使用的N80钢级套管在下井后保压过程中出现的泄压事故,通过对失效接头进行了宏观观察、管材力学性能和化学成分分析,并对同批次未使用的套管接头进行了螺纹参数及外观检验,综合现场施工情况对螺纹接头失效的原因进行了分析。结果表明:产品存在缺陷和上扣扭矩过大是螺纹接头失效的原因,并提出了保证气井用套管使用安全的建议。

  10. How musical engagement promotes well-being in education contexts: the case of a young man with profound and multiple disabilities.

    Science.gov (United States)

    McFerran, Katrina S; Shoemark, Helen

    2013-01-01

    Students with profound intellectual disabilities disorders (IDDs) have the right to participate in educational opportunities that recognize their unique resources and needs, as do all children. Because of their specific communication challenges, positive relationships with attentive communication partners are critical for success. In fact, the power of positive relationships in schools is recognized to be connected to student well-being more broadly. This article examines the case of one young man with profound IDD and his relationship with his music therapist using a duo-ethnographic informed paradigmatic case study. Video analysis based on multi-voice perspectives is used to generate hermeneutic phenomenological findings to closely examine the relationship between a young man with profound IDD and a music therapist. The voices of four allied health researchers were also gathered to inform the authors' construction of an informed commentary on the phenomenon. The results suggest that the essence lay in a combination of attentive, responsive and creative being with the other person over time. Four principles of musical engagement were identified in the video footage as critical to the meaningful relationships through music: the music therapist listens; the music therapist takes responsibility for structure; spontaneous initiation is sought from the young person; and the relationship is built over time. These concepts are contextualized within a discussion of student well-being that is underpinned by positive relationships and leads to students achieving their full potential within diverse school contexts. PMID:23930986

  11. Ghrelin-producing well-differentiated neuroendocrine tumor (carcinoid) of tailgut cyst. Morphological, immunohistochemical, ultrastructural, and RT-PCR study of a case and review of the literature.

    Science.gov (United States)

    La Rosa, Stefano; Boni, Luigi; Finzi, Giovanna; Vigetti, Davide; Papanikolaou, Nikolaos; Tenconi, Silvia Maria; Dionigi, Gianlorenzo; Clerici, Moira; Garancini, Silvana; Capella, Carlo

    2010-09-01

    Well-differentiated neuroendocrine tumors (carcinoids) arising in the presacral space are rare neoplasms that can arise in association with either sacrococcygeal teratomas or tailgut cysts. Although tumors arising in tailgut cysts are more frequent than those associated with teratomas, they are still very rare, and only 13 cases have been reported in the literature. We describe the first case of a carcinoid composed of ghrelin-producing cells arising in a tailgut cyst. Ghrelin production was demonstrated using immunohistochemistry, electron microscopy, and reverse transcription-polymerase chain reaction methods. A 73-year-old woman with back and pelvic pain was found to have a presacral mass histologically diagnosed, on needle biopsy, as a well-differentiated neuroendocrine tumor. Workup did not show another primary tumor or metastatic disease. The patient underwent laparoscopic resection of the mass, and the pathological diagnosis of the surgical specimen was of a tailgut cyst-associated carcinoid composed of ghrelin-producing cells. In addition, we have accurately reviewed the literature on presacral carcinoids, associated or unassociated with tailgut cysts, to give the reader a comprehensive overview of these very rare tumor types. PMID:20532674

  12. A Study on the Casing Wear Mechanism in Highly-deviated Well Drilling%大斜度井中套管磨损机理研究

    Institute of Scientific and Technical Information of China (English)

    练章华; 于浩; 刘永辉; 林铁军; 张强

    2016-01-01

    针对套管在大斜度井中的磨损失效,首先开展了套管的磨损实验研究,根据Dawson和White提出的基于能量损失的线性磨损模型以及本文的实验数据,获得了钻杆接头与套管的磨损系数。建立了钻杆接头与套管磨损机理研究的有限元模型,通过任意拉格朗日欧拉自适应网格划分,在数值模拟过程中可以对套管磨损的节点进行“实时调整”,并对网格单元做光滑处理,不断更新钻柱接头与套管的接触关系,对钻进过程中套管磨损机理进行了研究。在磨损后套管结构形状研究的基础上,开展了套管剩余抗挤强度的数值模拟研究,得到了套管的最大磨损深度随时间的变化关系,建立了套管剩余抗挤强度与最大磨损深度的关系,进而可以预测套管在某一累积磨损时间内套管的最大磨损深度和套管的剩余强度,为磨损套管的安全性评价提供了理论依据。%Aimed at studying the wear failure in the drilling process of highly-deviated well,this paper firstly carried out casing wear experiment research. According to the liner casing wear model based on the energy loss suggested by Dawson R and White J,and the experiment,the joint-casing wear coefficient is obtained. The finite element model of casing wear mechanism research is constructed using ABAQUS software. This paper uses the re-development user subroutine and Arbitrary Lagrange-Euler mesh. In the process of numerical simulation,the location of the wear node can be adjusted timely,the mesh element is smoothed,and the contact relations between joint and casing is altered continuously,which all contribute to the study on casing wear mechanism. Based on the shape of worn casing,the numerical simulation research is carried out to determine the remaining collapse strength,as a result of which,the relationship between the maximum wear depth and wear time is obtained. On this basis,the exact relationship

  13. Staying Well

    Science.gov (United States)

    ... for at-home program. By Beth E. Gibson, PT. (last updated September 2015) Download Brochure Taming Stress (. ... for at-home program. By Beth E. Gibson, PT. (last updated September 2015) Download Brochure Wellness Discussion ...

  14. Militantly Well

    DEFF Research Database (Denmark)

    Vigh, Henrik Erdman

    2015-01-01

    futures that transcend conflict engagement and wartime suffering for young militiamen. It clarifies the positive prospects that are expected to lie beyond the known horrors of war. Though conflict and warfare may provide strange points of departure for talking about well-being, imaginaries of happiness...... stand out from a background of hardship and are talked about in both a quite concrete way, as a lack of insecurity, as well as in an abstract way, as realization of social being. However, for most of the people I talk to, happiness remains elusive and evades their desperate attempts to grasp it...

  15. Werable wellness

    DEFF Research Database (Denmark)

    Rozycki, Bartosz

    2015-01-01

    We live in a world full of rush and a ‘relaxed state of being’ might increasingly play a role in today’s fast paced society to overcome contemporary stress and related illnesses such as burn-outs. The Sleephones concept is a wearable wellness device that aims to support relaxation by combing music...

  16. Case History: Merging the Tools of DC Resistivity and Fracture Trace Analysis for Locating High Yield Domestic Water Wells in Karst Terrain, Shenandoah Valley, Virginia, USA

    Science.gov (United States)

    Frangos, W.; Eaton, L. S.

    2004-05-01

    , suggesting underground voids. This knowledge could serve as a future guide for both well placement and for site evaluation of the potential for sinkhole occurrence. The second site is located 5 km due south of the Barth Farm. A potential residential and farm operations site was being evaluated for construction based on the availability of adequate water yield. Previous attempts of drilling on a contiguous property resulted in a fruitless 800 ft dry hole. The site is mapped as folded sedimentary rock (limestone, dolomite, shale), but outcrops are masked by ~25 m thick alluvial deposits of quartzite gravel and sand. The presence of numerous sinkholes and ponds suggests karst terrain. Fracture trace analysis was initially conducted to identify zones that may contain water-bearing conduits. A dipole-dipole DC resistivity survey followed in areas specifically delineated by the fracture trace analysis. The results lead to two strong wells, one producing 60-100 gpm at 286 ft deep, and the second well 40 gpm at 395 ft. Based on the previous drilling difficulty in this terrain, the complementary tools of high-resolution resistivity and fracture trace analysis are effective in locating high-yield water wells in karst environments. In the first case, the shallow aquifer was detected directly by the resistivity and indirectly by photo interpretation; in the second, both methods provided indirect evidence. The combined use of near-surface indications of underlying karst reservoirs is recommended for future exploration work.

  17. A-Well defined raw material specifications of product and its components, a key of successful new product design. A critical evaluation by case study

    Directory of Open Access Journals (Sweden)

    Vidyadhar Malhar Dandge

    2015-12-01

    Full Text Available New product design and development indeed needs long termvision for better product life and hence to have better product features the design team has to take into consideration various techno-commercial aspects todesign and develop most adequate new product. Normally in case of new product design all related activities are initiated by the team of technicians under the directive jointly given by top and marketing management of the concerned organization. Due to global competition in the market the product requirements are needed to be carefully identified so as to make the product more user friendly to the customers. Considering this it is quite obvious that top priority is for product performance considerations at the same time they have to establish the product cost to make it more competent in the market. Due to these constraints recently the design and development function has no more remained the responsibility technocrats but it has become techno-commercial activity. One should treat this as design and development joint activity to be performed by the dedicated team of techno-commercial people who are well equipped with sound technical knowledge so as to design the best possible product. Due to this reason the primary design activity is seen to be interfacing with various departments such as Marketing, Materials, Tool room ,Manufacturing, Vendor development and many other related departments and valuable in puts from them are badly needed at the initial phase of product design and development. This helps in identifying the product needs at various manufacturing stages well in advance. This ultimately helps the design department to deliver the most adequate product with no operational problems and product is ready to satisfy customer’s needs which ultimately leads to growth of organization through smooth product life cycle management.

  18. Wellness hotel

    OpenAIRE

    Bambas, Vratislav

    2013-01-01

    Novostavba Wellness hotelu. Objekt je částečně podsklepen. Hotel se skládá ze tří částí. Střední trakt je železobetonový skelet a má pět nadzemních podlaží. Tato část slouží jako vstupní hala a hlavní schodiště. Boční trakty mají čtyři nadzemní podlaží a jejich nosný systém je příčný stěnový, zděný, ze systému Porotherm. V suterénu se nachází zázemí hotelu a bazén. Do přízemí je umístěno restaurační zařízení. Ve druhém patře se nacházejí pokoje, posilovna a služby. V posledním patře jsou pouz...

  19. Over-estimation of sea level measurements arising from water density anomalies within tide-wells - A case study at Zuari Estuary, Goa

    Digital Repository Service at National Institute of Oceanography (India)

    Joseph, A.; VijayKumar, K.; Desa, E.S.; Desa, E.; Peshwe, V.B.

    A 3-year study of water density anomalies within a conventional tide-well indicated that the average water density within the well was consistently lower than that of the external ambient waters. The tide-well at Marmugao, Goa, India is situated...

  20. Islamic Personal Religiosity as a Moderator of Job Strain and Employee's Well-Being: The Case of Malaysian Academic and Administrative Staff.

    Science.gov (United States)

    Achour, Meguellati; Mohd Nor, Mohd Roslan; MohdYusoff, Mohd Yakub Zulkifli

    2016-08-01

    Presently, there is increased in research on job strain and the effects of religiosity on employee well-being. Despite increased recognition of religiosity as a moderator of well-being, limited research has focused on Islamic perspective of moderating job strain. This study examines the moderating effects of Islamic personal religiosity on the relationship between job strain and employee well-being in Malaysian universities. One hundred and seventeen (117) Muslim academic and administrative staff from four public universities were sampled. Data were collected via questionnaires, and our findings show that the effect of job strain on well-being is significant for employees and that personal religiosity of employees contributed to alleviating job strain and enhancing well-being. Thus, the study concludes that Islamic personal religiosity moderates the relationship between job strain and employee well-being.

  1. Islamic Personal Religiosity as a Moderator of Job Strain and Employee's Well-Being: The Case of Malaysian Academic and Administrative Staff.

    Science.gov (United States)

    Achour, Meguellati; Mohd Nor, Mohd Roslan; MohdYusoff, Mohd Yakub Zulkifli

    2016-08-01

    Presently, there is increased in research on job strain and the effects of religiosity on employee well-being. Despite increased recognition of religiosity as a moderator of well-being, limited research has focused on Islamic perspective of moderating job strain. This study examines the moderating effects of Islamic personal religiosity on the relationship between job strain and employee well-being in Malaysian universities. One hundred and seventeen (117) Muslim academic and administrative staff from four public universities were sampled. Data were collected via questionnaires, and our findings show that the effect of job strain on well-being is significant for employees and that personal religiosity of employees contributed to alleviating job strain and enhancing well-being. Thus, the study concludes that Islamic personal religiosity moderates the relationship between job strain and employee well-being. PMID:25835985

  2. Nursing a case of the blues: an examination of the role of depression in predicting job-related affective well-being in nurses.

    Science.gov (United States)

    Morrissy, Laura; Boman, Peter; Mergler, Amanda

    2013-03-01

    The current study explored the effect of depression, optimism, and anxiety on job-related affective well-being in 70 graduate nurses. It was predicted that depression and anxiety would have a significant negative effect on job-related affective well-being, whereas optimism would have a significant positive effect on job-related affective well-being. Questionnaires were completed online or in hard-copy forms. Results revealed that depression, optimism, and anxiety were all significantly correlated to job-related affective well-being in the expected direction, however, depression was found to be the only variable that made a significant unique contribution to the prediction of job-related affective well-being. Possible explanations for these findings are explored.

  3. Improving First Computer Programming Experiences: The Case of Adapting a Web-Supported and Well-Structured Problem-Solving Method to a Traditional Course

    Science.gov (United States)

    Uysal, Murat Pasa

    2014-01-01

    The introductory computer programming (CP) course has been taught for three decades in the faculty. Besides pursuing CP technology, one major goal has been enhancing learners' problem-solving (PS) skills. However, the current situation has implied that this might not be the case. Therefore, a research was conducted to investigate the effects of a…

  4. The Impacts of well Planned Recruitment and Selection Process on Corporate Performance in Nigerian Banking Industry (A Case Study of First Bank Plc 2004-2011

    Directory of Open Access Journals (Sweden)

    Adeniyi Mudashiru Mustapha

    2013-09-01

    Full Text Available A sound recruitment programme logically follows a well drawn-up manpower plan. In fact, the quality of the present manpower plan as indeed of every present decision of the organization depends upon the quality of recruitment policies and practices. This paper examines recruitment and selection process. It identifies a typical source by separating recruitment into internal and external and discussed the advantages of each method. The analytical tools used in this study were regression analysis and analysis of variance (ANOVA to determine the relationship between a well planned recruitment and selection process on corporate performance. Findings revealed that there is a significant relationship between recruitment and selection based on merit and organizational performance; that effective recruitment and selection is a key to organizational commitment; that a well planned recruitment and selection contributes to organizational performance. The paper concludes by drawing the danger potends by poor recruitment and selection as poor recruitment could lead to selection of poor applicants.

  5. A case study using support vector machines, neural networks and logistic regression in a GIS to identify wells contaminated with nitrate-N

    Science.gov (United States)

    Dixon, Barnali

    2009-09-01

    Accurate and inexpensive identification of potentially contaminated wells is critical for water resources protection and management. The objectives of this study are to 1) assess the suitability of approximation tools such as neural networks (NN) and support vector machines (SVM) integrated in a geographic information system (GIS) for identifying contaminated wells and 2) use logistic regression and feature selection methods to identify significant variables for transporting contaminants in and through the soil profile to the groundwater. Fourteen GIS derived soil hydrogeologic and landuse parameters were used as initial inputs in this study. Well water quality data (nitrate-N) from 6,917 wells provided by Florida Department of Environmental Protection (USA) were used as an output target class. The use of the logistic regression and feature selection methods reduced the number of input variables to nine. Receiver operating characteristics (ROC) curves were used for evaluation of these approximation tools. Results showed superior performance with the NN as compared to SVM especially on training data while testing results were comparable. Feature selection did not improve accuracy; however, it helped increase the sensitivity or true positive rate (TPR). Thus, a higher TPR was obtainable with fewer variables.

  6. A two-day-old hyperthyroid neonate with thyroid hormone resistance born to a mother with well-controlled Graves’ disease: a case report

    Directory of Open Access Journals (Sweden)

    Yatsuga Shuichi

    2012-08-01

    Full Text Available Abstract Introduction Resistance to thyroid hormone is a syndrome caused by thyroid hormone receptor β mutations, which are usually inherited in an autosomal-dominant pattern. Case presentation Our patient, a Japanese neonate boy, showed hyperthyroid symptoms at age two days. Although our patient was diagnosed as having resistance to thyroid hormone, his hyperthyroid symptoms continued for two weeks. Therefore, our patient was treated with methimazole and iodine for two weeks from birth, showing no side effects and no symptoms upon treatment. At age 70 days, an R243W mutation in thyroid hormone receptor β was detected in our patient; while absent in his mother, the mutation was present in his father, who never showed any symptoms. Conclusions To the best of our knowledge this is the first case report of a resistance to thyroid hormone in a neonate presenting with hyperthyroid symptoms born to a mother with Graves’ disease and treated with methimazole and iodine. These results suggest that methimazole and iodine may be a good short-term option for treatment.

  7. Well production practical handbook

    Energy Technology Data Exchange (ETDEWEB)

    Cholet, H.

    2000-07-01

    This new Handbook is designed to give a complete, comprehensive overview of field development and well production, providing a wealth of practical information. It is intended as a reference guide for petroleum engineers and oil field operators, yet also provides readily-available solutions to practical problems. The user will find the guidelines, recommendations, formulas and charts currently in use, as it covers most of the cases encountered in the field. Even when a problem has been contracted out to a service company, reference to this handbook will help the oil field manager to better monitor out-sourced work and current operations. The handbook also introduces the new techniques of well production (horizontal and multilateral wells, heavy oil production, etc.). Many examples are given throughout to facilitate the use of the formulas. Also, measurements are frequently expressed in both metric and U.S. units. The symbols used for these units conform to the recommendations of the SPE Board of Directors. This publication will therefore serve both as a guide and as a handbook, in which the operator will find answers to his questions, along with quick and easy solutions to most of the problems that occur in field development. Contents: General data. Casing and tubing. Coiled tubing. Packers. Pressure losses. Fundamentals of petroleum reservoirs. Well productivity. Formation damage control. Sand control. Stimulation. Horizontal and multilateral wells. Water management. Heavy ail production, Enhanced oil recovery. Artificial lift. Beam pumping and other reciprocating rod pumps. Gas lift. Electric submersible pumps. Progressing cavity pumps. Hydraulic pumping. Multiphase pumping and metering. Deposit treatment. Well servicing. Cased hole logging and imaging. Financial formulas for investment decisions. List of standards for petroleum production. Glossary. (author)

  8. 套管钻井技术在委内瑞拉ZM-351井的应用%Application of casing drilling technology in ZM-351 well in Venezuela

    Institute of Scientific and Technical Information of China (English)

    于顺明; 常淑敏

    2009-01-01

    ZM-351 is one experimental surface casing drilling well with diameter of 339.7 mm, which is located in block CAMPO MATA, Anaco Oil Filed of PDVSA. The well adopts the advanced international casing drilling technology, i.e. top drill lock assembly & bottom drill lock device. Compared with the close wells that are the same well structure and at the same block, the ZM-351 well completion time is shortened, the cost is reduced, and fully showing the advantage of casing drilling. The thesis describes ZM-351 casing drilling process, casing drilling key technology, drilling rig selection and its accessories and etc. so as to provide some experience for casing drilling in China.%ZM-351井是委内瑞拉国家石油公司PDVSA在东部ANACO油田CAMPO MATA区块的一口Φ339.7 mm套管钻井技术试验井.该井采用了国际先进的套管钻井顶部缩紧总成和底部缩紧装置,成功地完成了Φ339.7mm套管钻井技术试验,与相同区块、相同井身结构的临井相比,大大缩短了钻井周期,降低了钻井成本,充分体现了套管钻井技术的优越性.详细介绍了ZM-351井套管钻井工艺、套管钻井关键技术、钻机选型和设备配套等情况,为国内推广应用套管钻井技术提供了经验.

  9. What's so good in my life? Children's Perspectives and Understanding of Well-being in an Urban Slum: A Case study in Islamabad, Pakistan

    OpenAIRE

    Wilson, Samita

    2013-01-01

    This study aimed to explore the perspectives of children about their well-being through participatory research in the context of an urban slum area in Islamabad, the capital city of Islamabad. Eighteen children: ten girls and eight boys participated in this study and generated a rich data. During this research I used qualitative research methods which include informal conversations, guided tours, group discussions and interviews and observation. These methods were selected in consultation wit...

  10. The Impacts of well Planned Recruitment and Selection Process on Corporate Performance in Nigerian Banking Industry (A Case Study of First Bank Plc 2004-2011)

    OpenAIRE

    Adeniyi Mudashiru Mustapha; O.A. Ilesanmi; M. Aremu

    2013-01-01

    A sound recruitment programme logically follows a well drawn-up manpower plan. In fact, the quality of the present manpower plan as indeed of every present decision of the organization depends upon the quality of recruitment policies and practices. This paper examines recruitment and selection process. It identifies a typical source by separating recruitment into internal and external and discussed the advantages of each method. The analytical tools used in this study were regression analysis...

  11. Improving Well-Being in Caregivers of Terminally Ill Patients. Making the Case for Patient Suffering as a Focus for Intervention Research

    OpenAIRE

    Hebert, Randy S; Arnold, Robert M.; Schulz, Richard

    2007-01-01

    Family caregivers are integral to the care of patients with physical or mental impairments. Unfortunately, providing this care is often detrimental to the caregivers' health. As a result, in the last decade, there has been a proliferation of interventions designed to improve caregivers' well-being. Interventions for caregivers of persons at end-of-life, however, are relatively few in number and are often underdeveloped. They also are typically designed to help reduce the work of caregiving or...

  12. Sumak Kawsay, or the concept of living well, and perceptions about natural, urban and rural areas : the case of Cuenca (Ecuador)

    OpenAIRE

    Malo Larrea, Antonio

    2012-01-01

    This research explores critical environmental concepts from the standpoint of political ecology. It contrasts the Ecuadorian Kichua indigenous concept of Sumak Kawsay (i.e., living well), with discourses about natural, urban and rural areas. Sumak Kawsay was included in Ecuador’s 2008 constitution as an alternative to the neoclassical idea of development. This work reveals interesting insights from a variety of social and political viewpoints from both rural and urban areas. The research is b...

  13. Spiritual well-being, intrinsic religiosity, and suicidal behavior in predominantly Catholic Croatian war veterans with chronic posttraumatic stress disorder: a case control study.

    Science.gov (United States)

    Nad, Sanea; Marcinko, Darko; Vuksan-Aeusa, Bjanka; Jakovljević, Miro; Jakovljevic, Gordana

    2008-01-01

    We investigated relationships between spiritual well-being (SWB), intrinsic religiosity (IR), and suicidal behavior in 45 Croatian war veterans with chronic posttraumatic stress disorder and 32 healthy volunteers. Compared with the volunteers, the veterans had significantly lower SWB scores (p = 0.000) and existential well-being (EWB) scores (p = 0.000). Scores on the religious well-being (RWB) subscale (p = 0.108) and the IR scale did not differ significantly between the groups (p = 0.803). Veterans' suicidality inversely correlated with SWB (p = 0.000), EWB (p = 0.000), RWB (p = 0.026), and IR (p = 0.041), with the association being stronger for the EWB subscale than for the RWB subscale. Veterans who had attempted suicide at least once in their lifetime had significantly higher Suicidal Assessment Scale scores and lower EWB scores than veterans who never attempted suicide. Low EWB scores may imply an increased risk of suicidality. Some religious activities were more frequent among the veterans than among the healthy volunteers, possibly reflecting the veterans' increased help-seeking behavior due to poor EWB.

  14. Hermite-distributed approximating functional-based formulation of multiconfiguration time-dependent Hartree method: A case study of quantum tunnelling in a coupled double-well system

    Indian Academy of Sciences (India)

    KAUSHIK MAJI

    2016-08-01

    We propose a variant of the multiconfiguration time-dependent Hartree (MCTDH) method within the framework of Hermite-distributed approximating functional (HDAF) method. The discretized Hamiltonian is a highly banded Toeplitz matrix which significantly reduces computational cost in terms of both storage and number of operations. The method proposed is employed to carry out the study of tunnelling dynamics of two coupled double well oscillators. We have calculated the orthogonality time \\tau , which is a measure of the time interval for an initial state to evolve into its orthogonal state. It is observed that the coupling has a significant effect on \\tau .

  15. Pumping potential wells

    Science.gov (United States)

    Hershkowitz, N.; Forest, C.; Wang, E. Y.; Intrator, T.

    1987-01-01

    Nonmonotonic plasma potential structures are a common feature of many double layers and sheaths. Steady state plasma potential wells separating regions having different plasma potentials are often found in laboratory experiments. In order to exist, such structures all must find a solution to a common problem. Ions created by charge exchange or ionization in the region of the potential well are electrostatically confined and tend to accumulate and fill up the potential well. The increase in positive charge should eliminate the well. Nevertheless, steady state structures are found in which the wells do not fill up. This means that it is important to take into account processes which 'pump' ions from the well. As examples of ion pumping of plasma wells, potential dips in front of a positively biased electro collecting anode in a relatively cold, low density multidipole plasma is considered. Pumping is provided by ion leaks from the edges of the potential dip or by oscillating the applied potential. In the former case the two dimensional character of the problem is shown to be important.

  16. Simulation of Electricity Demand Function in Agricultural Sector: An Application of Genetic Algorithm (Case Study: Electricity-Fed Wells of Iran

    Directory of Open Access Journals (Sweden)

    Hossein Sadeghi

    2014-11-01

    Full Text Available Due to several problems arisen from consumption of gas oil, it is necessary to electricity substitute fossil fuels in agriculture wells in Iran. Problems such as lack of opportune and adequate supply of fuel, air and soil pollution, noise pollution and huge costs of installation, operation and maintenance imply the necessity of replacing gas oil systems by electricity-consuming ones in agriculture sector of Iran.However, it is essential to study on the demand of electricity, nowadays, substituting other energy sources.As water wells are the main electricity consumersin agriculture sector, the estimation of energy demand function would be beneficial for policy makers to achieve their goals. The present paper investigates on energy demand function in agriculture sector of Iran.Genetic algorithm techniques are appliedto estimate electricity demand in agricultural sector in three forms: linear, quadratic and exponential equations. Based on the conventional criteria, the exponential model is selected as the best model for estimation. Furthermore, electricity demand of agricultural sector is forecasted under three scenarios for years next three years.

  17. Study on Character of Micro-Canal Deposit and Its Significance in Petroleum Geology --Case study of Tuo-147-well in north zone of Dongying depression

    Institute of Scientific and Technical Information of China (English)

    吴李泉; 曹代勇; 刘里勤; 刘艳华

    2003-01-01

    Exploration on reservoir of glutenite segment in steep slope zone of half graben-like basin is one of the hot spot targets at present and in the future for new reservoirs; And the study of sediment character of sandy-conglomerate bodies is the keystone and also the difficult problem. Taking Tuo-147-well area in north zone of Dongying depression as an example, the micro-canal sedimentation was researched. The result shows that many micro-canals exist at the end of slope grain-flow in steep slope zone of half graben-like basin; The micro-canals grow at the end of subaqueous grain-flow deposited bodies of 3rd member of the Shahejie formation. The main condition of micro-canal formation is the slope angle less than 18° and a long suitable sedimentary slope. These micro-canals may communicate the reservoir of glutenite segment in steep slope zone and the hydrocarbon stratum as a bridge role. Therefore, it is significant in theory and practice for discovering a series of micro-canals at the end of slope grain-flow in steep slope zone of half graben-like basin.

  18. The information for the operational risk management in uncertain environments: Case of Early Kick Detection while drilling of the oil or gas wells

    Directory of Open Access Journals (Sweden)

    Abdelkader BAAZIZ

    2013-09-01

    Full Text Available Identification and management of risks related to an uncertain operating environment is especially important when it is an oil or gas wellsite where risks can go beyond the physical and financial losses: human lives. Early identification of an uncertain event can significantly reduce this risk. The aim of this study is to use the information as intangible assets for purposes of identification and management of risks. We are particularly interested in a hazardous event: the gas inflow while drilling of an oil or gas well, through three sources of information: general information on the internet, technical and scientific publications on Google Scholar and patent publications on Google Patent, WIPO or Esp@cenet.Early identification of a potentially dangerous event is not an easy task. It requires advanced tools and technologies, but also a particular attention and human expertise. Information on tools and technologies are available in various forms on the internet: manufacturers and service providers' brochures, technical and scientific publications and also in patent databases. How to find and exploit this wealth of information? This study shows the importance of information and its appropriate use at the right time to reduce risks related to operational activities in uncertain and potentially dangerous environments. We used any tools of research and analysis of information such as Google, Google Scholar, Google Patent, and Matheo Patent Matheo Web.

  19. Oxidative stress induces mitochondrial dysfunction in a subset of autism lymphoblastoid cell lines in a well-matched case control cohort.

    Directory of Open Access Journals (Sweden)

    Shannon Rose

    Full Text Available There is increasing recognition that mitochondrial dysfunction is associated with the autism spectrum disorders. However, little attention has been given to the etiology of mitochondrial dysfunction or how mitochondrial abnormalities might interact with other physiological disturbances associated with autism, such as oxidative stress. In the current study we used respirometry to examine reserve capacity, a measure of the mitochondrial ability to respond to physiological stress, in lymphoblastoid cell lines (LCLs derived from children with autistic disorder (AD as well as age and gender-matched control LCLs. We demonstrate, for the first time, that LCLs derived from children with AD have an abnormal mitochondrial reserve capacity before and after exposure to increasingly higher concentrations of 2,3-dimethoxy-1,4-napthoquinone (DMNQ, an agent that increases intracellular reactive oxygen species (ROS. Specifically, the AD LCLs exhibit a higher reserve capacity at baseline and a sharper depletion of reserve capacity when ROS exposure is increased, as compared to control LCLs. Detailed investigation indicated that reserve capacity abnormalities seen in AD LCLs were the result of higher ATP-linked respiration and maximal respiratory capacity at baseline combined with a marked increase in proton leak respiration as ROS was increased. We further demonstrate that these reserve capacity abnormalities are driven by a subgroup of eight (32% of 25 AD LCLs. Additional investigation of this subgroup of AD LCLs with reserve capacity abnormalities revealed that it demonstrated a greater reliance on glycolysis and on uncoupling protein 2 to regulate oxidative stress at the inner mitochondria membrane. This study suggests that a significant subgroup of AD children may have alterations in mitochondrial function which could render them more vulnerable to a pro-oxidant microenvironment derived from intrinsic and extrinsic sources of ROS such as immune activation and

  20. Bioleached sludge composting drastically reducing ammonia volatilization as well as decreasing bulking agent dosage and improving compost quality: A case study.

    Science.gov (United States)

    Hu, Weitong; Zheng, Guanyu; Fang, Di; Cui, Chunhong; Liang, Jianru; Zhou, Lixiang

    2015-10-01

    Sludge bioleaching technology with Acidithiobacillus species has been commercially adopted for improving advanced dewatering of sludge in China since 2010. However, up to now, little information on bioleached dewatered sludge (BS) composting is available. Here, we report the changes of physicochemical and biological properties in BS composting and evaluate compost product quality compared to conventional dewatered sludge (CS) composting in an engineering scale composting facility. The results showed that the amount of bulking agents required in BS composting was only about 10% of CS composting to obtain optimum moisture content, reducing about 700 kg bulking agents per ton fresh sludge. pH of BS composting mixture was slightly lower consistently by about 0.2-0.3 pH units than that in CS mixture in the first 30 days. Organic matter biodegradation in BS system mainly occurred in the first 9 days of composting. In spite of higher content of NH4(+)-N was found in BS mixture in related to CS mixture; unexpectedly the cumulative ammonia volatilization in the former was only 51% of the latter, indicating that BS composting drastically reduced nitrogen loss. Compared to CS composting system, the relative lower pH, the higher intensity of microbial assimilation, and the presence of water soluble Fe in BS system might jointly reduce ammonia volatilization. Consequently, BS compost product exhibited higher fertilizer values (N+P2O5+K2O=8.38%) as well as lower heavy metal levels due to the solubilization of sludge-borne heavy metals during bioleaching process. Therefore, composting of BS possesses more advantages over the CS composting process. PMID:26216504

  1. Research and application of tubeless oil production technology for small cased wells%小套管井无油管采油技术的研究与应用

    Institute of Scientific and Technical Information of China (English)

    董元军; 郑振兴; 孟凡晶; 古光明; 孙渊平

    2015-01-01

    近年来,内径小于Ø101.6 mm 的小套管井在临盘采油厂渐成规模,已成为原油生产的重要组成部分。但由于套管内径限制,该类油井泵径小、杆管间隙小,导致提液困难和杆管偏磨。本研究提出了小套管井无油管举升的技术理念,配套完成了小套管井无油管杆式泵锚定技术、空心杆注塑防偏磨技术、无油管采油井口出油系统及举升工具的设计与室内试验,形成了一套完整的小套管井无油管举升实用技术。现场试验表明,该技术满足了小套管井现场提液、防偏磨的需要,有效降低了生产成本,是一种技术可靠、使用简单、成本低廉的技术手段,对油田小套管井的高效开发具有重要意义。%In recent years, the small cased wells with inner diameter less than Ø101.6 mm have become more popular in Linpan Oil Production Plant and have become an important part of crude oil production. But due to restriction by inner diameter of casing, the pump diameter is small and the clearance between pipe and the rod is small, which cause difficulties in liquid extraction and eccentric wear of rod-pipe. A technical concept of tubeless lift in small cased wells is presented, with completion of tubeless rod pump anchoring technology, anti-eccentric technique for hollow rod by injection molding, tubeless wellhead oil production system with lifting tools. Thus, a set of complete practical tubing-free lift technique for small cased wells is formed. The site tests show that this technique satisfies the requirements of liquid extraction and anti-eccentric wear in small cased wells, effectively reduces the production costs and is a technically reliable. It is easy to use and its cost is low, which has great significance to the efficient development of small cased wells.

  2. Casing safety analysis with defective cement ring in thermal recovery well%高温热采井水泥环缺陷对套管安全性的影响分析

    Institute of Scientific and Technical Information of China (English)

    祝效华; 刘少胡; 童华; 高原; 刘应华

    2012-01-01

    针对水泥环缺陷导致套管承受非均匀载荷并引起套管失效的问题,建立了套管、含缺陷水泥环和地层耦合系统有限元计算模型.将温度场与应力场耦合,考虑套管强度降低,计算了水泥环缺陷形状、缺陷环向开度、缺陷深度及缺陷数量对套管安全的影响.应用塑性变形、剩余强度和安全系数来评价水泥环含缺陷井筒中套管的安全性,并分析了套管的失效模式.计算结果表明:完整井筒和水泥环含缺陷井筒中套管的屈服温度相差较大,水泥环缺陷环向开度和深度对套管安全的影响比较大.此研究为揭示套管失效机理提供了依据,对预防套损具有指导意义.%Defective cement ring often leads to non-uniform load of casing in thermal recovery well. Therefore, the defect of cement ring is one of the key causes in casing failure. A numerical model was developed with using Finite Element Method (FEM) to analyze casing safety with a defective cement ring. Temperature field and stress field were fully coupled to calculate casing strength, which the strength degradation of casing, the defective parameters of the cement ring including defective shape, circumferential spread, defective depth and quantity, were all considered. In addition, plastic deformation, residual strength and safety factor were applied to assess the casing safety. Casing failure model was also analyzed in this paper. The result shows that the temperature is different for casing yielded in integrity wellbore and wellbore with defective cement ring. The effect of circumferential spread and defective depth on casing safety is severe. This study not only can reveal the failure mechanism of casing but also can prevent from the casing failure.

  3. Corrosion in pipelines and well casings at the Cerro Prieto geothermal field, BC; Corrosion en tuberias de linea y de revestimiento de pozos del campo geotermico de Cerro Prieto, BC

    Energy Technology Data Exchange (ETDEWEB)

    Miranda Herrera, Carlos A.; Canchola Felix, Ismael; Raygoza Flores, Joaquin; Mora Perez, Othon [Comision Federal de Electricidad, Residencia General de Cerro Prieto, Mexicali, Baja California (Mexico)]. E-mail: carlos.miranda02@cfe.gob.mx

    2009-07-15

    In the area called Poligono Hidalgo, inside the Cerro Prieto IV zone in the Cerro Prieto geothermal field, BC, corrosion has occurred in the last few years on well casings and pipelines used for geothermal fluids. Corrosion test results are presented here for pipes, type API L-80 and ASTM A-53 grade B, which were subjected to condensate from wells 403 and 424. These wells have thrown corroded material from their respective casings. With these data we pinpoint corrosive conditions in this field area and determine which pipes are adequate to case wells in similar chemical, production conditions to minimize adverse effects and extend the life of the well, allowing more efficient exploitation of the deepest production zones in the reservoir. [Spanish] En el campo geotermico de Cerro Prieto, BC, dentro del area del Poligono Hidalgo en el sector conocido como Cerro Prieto IV, algunos pozos han presentado en los ultimos anos desgastes en sus tuberias de revestimiento y en las tuberias de linea para el transporte del fluido geotermico. Se presentan resultados de pruebas de corrosion con tuberias tipo API L-80 y ASTM A-53 grado B al ser sometidas al condensado de los pozos 403 y 424, los cuales han estado arrojando material de sus respectivas tuberias de revestimiento. Con estos datos se pretende conocer las condiciones corrosivas de esa zona del campo y determinar cual seria la tuberia ideal a utilizar en pozos con condiciones quimicas de produccion semejantes a fin de minimizar este efecto adverso y prolongar la vida de los pozos, a la vez que se permita la explotacion eficiente de las zonas productoras mas profundas del yacimiento.

  4. Seismic response of casing string of an oil and gas well in deepwater based on Timoshenko beam theory%基于Timoshenko梁理论的深水油气井套管柱地震响应分析

    Institute of Scientific and Technical Information of China (English)

    黄锦雄; 朱幸科; 韩卫东

    2013-01-01

    鉴于海洋表层软土对深水油气井套管柱井身结构稳定性的重要影响,尤其地震发生时,在软硬土层交界面处管柱截面会产生较大弯矩与剪力,据桩基动力响应理论,引入回传射线矩阵法,建立适于深水油气井套管柱的地震响应分析模型.将组合套管柱等效为变截面Timoshenko梁,分别从表层软土剪切波速及厚度分析,探讨套管柱在软硬土层交界面处弯矩与剪力幅值的变化规律,为海洋工程中套管柱的施工、设计及安全性评估提供一定参考及指导.%The soft surface layer has great influence on the stability of a subsea casing string of an oil and gas well in deepwater. Especially, earthquakes can cause a great bending moment and large shear force in cross sections of the casing string. An analysis model for the seismic response of the subsea casing string was established on the basis of pile foundation theories and the method of reverberation-ray matrix. The casing string was asummed to be a Timoshenko beam of variable cross sections. The bending moments and shear forces of the casing string at the interface between soft soil layer and hard one were discussed from the aspects of the shear velocity and thickness of the soft surface layer. The results provided a reference and guidance for construction, design and safety assessment of casing strings in naval engineering.

  5. Well materials durability in case of carbon dioxide and hydrogen sulphide geological sequestration; Durabilite des materiaux de puits petroliers dans le cadre d'une sequestration geologique de dioxyde de carbone et d'hydrogene sulfure

    Energy Technology Data Exchange (ETDEWEB)

    Jacquemet, N

    2006-01-15

    The geological sequestration of carbon dioxide (CO{sub 2}) and hydrogen sulphide (H{sub 2}S) is a promising solution for the long-term storage of these undesirable gases. It consists in injecting them via wells into deep geological reservoirs. The steel and cement employed in the well casing can be altered and provide pathways for leakage with subsequent human and environmental consequences. The materials ageing was investigated by laboratory experiments in geologically relevant P-T conditions. A new experimental and analysis procedure was designed for this purpose. A numerical approach was also done. The cement and steel were altered in various fluid phases at 500 bar-120 C and 500 bar-200 C: a brine, a brine saturated with H{sub 2}S-CO{sub 2}, a mixture of brine saturated with H{sub 2}S-CO{sub 2} and of supercritical H{sub 2}S-CO{sub 2} phase, a dry supercritical H{sub 2}S-CO{sub 2} phase without liquid water. In all cases, two distinct reactions are observed: the cement carbonation by the CO{sub 2} and the steel sulfidation by the H{sub 2}S. The carbonation and sulfidation are respectively maximal and minimal when they occur within the dry supercritical phase without liquid water. The textural and porosity properties of the cement are weakly affected by all the treatments at 120 C. The porosity even decreases in presence of H{sub 2}S-CO{sub 2}. But these properties are affected at 200 C when liquid water is present in the system. At this temperature, the initial properties are only preserved or improved by the treatments within the dry supercritical phase. The steel is corroded in all cases and thus is the vulnerable material of the wells. (author)

  6. Miliary pulmonary metastases of well-differentiated thyroid carcinoma (medullary excluded) about 10 cases; Les metastases pulmonaires micronodulaires de type miliaire dans le cancer thyroidien bien diff encie (medullaires exclus) a propos de dix cas

    Energy Technology Data Exchange (ETDEWEB)

    Ennibi, G. [Hopital Hassan-2, Service de Medecine Nucleaire, Agadir (Morocco); Ben Rais, N. [Centre Hospitalier Universitaire IBN Sina, Service de Medecine Nucleaire, Rabat (Morocco)

    2007-03-15

    Thyroid cancer is relatively a rare cancer; about 1% from all cancers: between 10 and 1591 of patients with differentiated thyroid cancer develop micro or macro-nodular pulmonary metastases. In this study we examined the characteristics and evolution after treatment of 10 patients with micro-nodular or miliary metastases of well-differentiated thyroid carcinoma. Total body scintigraphy with 131 iodine, chest X-ray or CT scan, and thyroglobulin assay were performed for all patients. The treatment was iodine 131 (3. 7 GBq). therapeutic 131 iodine scan was done for all patients seven days after the 131 administration. The effect of 131 iodine treatment was evaluated by means of changes in the number and size of lung metastases on the total body scintigraphy with 131 iodine and by serum thyroglobulin levels six months after 131 iodine ablation, they all received L-thyroxine (2,4 {mu}g/kg/j). The minimum duration of follow-up was 12 months. There were six females and four males within a range of 13-70 years old. Eight had papillary and two follicular thyroid cancer. These 10 patients benefited 131 iodine therapy. The effect of 131 iodine treatment and the prognostic values of the following variables mere examined: age at the time of 131 iodine. treatment and histological findings. The miliary was rarely diagnosed on the initial investigation. only in to o cases by 131 iodine scar. alter surgery. two cases by chest X-ray, and two cases by CT scan, the initial thyroglobulin levels was very high in seven cases, between 10 and 40 ng/ml in one case and less than 10 ng/ml in two cases. These results indicate that age, 131 iodine uptake. histological findings and the presence of other metastases are important factors in predicting the effects of 131 treatment for pulmonary metastases of well-differentiated thyroid carcinoma. Among all the variables studied. the best prognosis for survival was demonstrated by increased 131 uptake in pulmonary metastases and by early diagnosis

  7. 供水井酸处理井壁管防腐效果实验及分析%Experiment and Analysis on Preservative Treatment of Casing Pipes in Water-Supply Well Acidizing

    Institute of Scientific and Technical Information of China (English)

    韩超亚

    2011-01-01

    供水井酸处理井壁管防腐处理好坏,直接影响供水井寿命及实际效益.然而,该问题一直没有得到很好的解决.通过进行大量实验,肯定了过去供水井酸处理中井壁管防腐方法,并得到一些新的实验结论.分析认为,在盐酸中加入甲醛是目前供水井酸处理最经济有效的防腐方法,且尽可能使用稀盐酸进行供水井酸处理,浓度32%和10%盐酸在原酸中分别加入原酸重量的2%和1%甲醛溶液,能发挥最佳防腐效果.%Water-supply benefit and effect are directly affected by preservative treatment effect of casing pipes in water-supply well acidizing. However,this issue has not been well solved Through many experiments, the previous preservative treatment method was verified and some new experimental conclusions were proposed: for casing pipes in water-supply well acidizing,adding formaldehyde in hydrochloric acid is the most economical and effective preservative treatment method. In order to achieve the greatest anticorro-sion effect, well acid treatment should use dilute hydrochloric acid. Moreover, the optimum amount of formaldehyde added to hydrochloric acid with concentration of 32% and 10%,are 2% and 1% of the original acid weight,respectively.

  8. Artificial neural network modeling and cluster analysis for organic facies and burial history estimation using well log data: A case study of the South Pars Gas Field, Persian Gulf, Iran

    Science.gov (United States)

    Alizadeh, Bahram; Najjari, Saeid; Kadkhodaie-Ilkhchi, Ali

    2012-08-01

    Intelligent and statistical techniques were used to extract the hidden organic facies from well log responses in the Giant South Pars Gas Field, Persian Gulf, Iran. Kazhdomi Formation of Mid-Cretaceous and Kangan-Dalan Formations of Permo-Triassic Data were used for this purpose. Initially GR, SGR, CGR, THOR, POTA, NPHI and DT logs were applied to model the relationship between wireline logs and Total Organic Carbon (TOC) content using Artificial Neural Networks (ANN). The correlation coefficient (R2) between the measured and ANN predicted TOC equals to 89%. The performance of the model is measured by the Mean Squared Error function, which does not exceed 0.0073. Using Cluster Analysis technique and creating a binary hierarchical cluster tree the constructed TOC column of each formation was clustered into 5 organic facies according to their geochemical similarity. Later a second model with the accuracy of 84% was created by ANN to determine the specified clusters (facies) directly from well logs for quick cluster recognition in other wells of the studied field. Each created facies was correlated to its appropriate burial history curve. Hence each and every facies of a formation could be scrutinized separately and directly from its well logs, demonstrating the time and depth of oil or gas generation. Therefore potential production zone of Kazhdomi probable source rock and Kangan- Dalan reservoir formation could be identified while well logging operations (especially in LWD cases) were in progress. This could reduce uncertainty and save plenty of time and cost for oil industries and aid in the successful implementation of exploration and exploitation plans.

  9. Intelligent Pulse Current Cathodic Protection Power Supply Control System for Oil Well Casing%油井套管脉冲电流阴极保护电源控制系统研究

    Institute of Scientific and Technical Information of China (English)

    许庆; 周好斌; 张涛

    2015-01-01

    目的 设计一种智能化油井套管脉冲电流阴极保护电源控制系统,实现电源的智能化运行,确保保护效果最佳. 方法 采用三层闭环控制策略实现电源的自适应调节,采用先进的处理算法对输出电流、输出电压、套管电位进行处理,判断脉冲电流阴极保护的效果,输出相应的PWM控制信号,并对电源的输出参数进行实时调节. 结果 在5. 0 m×0. 5 m×0. 5 m的PVC绝缘水槽中模拟油井套管脉冲电流阴极保护系统,该系统能控制输出频率、幅值、占空比均可独立调节的脉冲电流,使40角钢的保护电位达到-0 . 85 V. 结论 该控制系统可以实现油井套管脉冲电流阴极保护电源的智能化运行,具有投入成本低、可靠性高、功能完善、操作方便等优点.%Objective To design a kind of intelligent control system of pulse current cathodic protection for oil well casing, real-ize the intelligent operation of power supply, and make sure that the cathodic protection of oil well casing pulse current is in the best condition. Methods Three-level closed-loop control strategy was adopted to realize the adaptive regulation of power supply. The advanced processing algorithm was used to deal with the output current, output voltage and casing potential, to determine the protective effect of pulse current cathodic protection, and output the corresponding PWM control signal to achieve real-time control of the power supply. Results A pulse current cathodic protection system of the oil well casing was simulated in the PVC insulated sink of 5. 0 m×0. 5 m×0. 5 m. This control system could control the pulse current with independently adjustable output frequency, amplitude and duty cycle, and the protection potential of the steel reached-0. 85 V. Conclusion This control system could realize the intelligent operation of power supply of pulse current cathodic protection for oil well casing, with advantages of low cost, high reliability

  10. Using open hole and cased-hole resistivity logs to monitor gas hydrate dissociation during a thermal test in the mallik 5L-38 research well, Mackenzie Delta, Canada

    Science.gov (United States)

    Anderson, B.I.; Collett, T.S.; Lewis, R.E.; Dubourg, I.

    2008-01-01

    Gas hydrates, which are naturally occurring ice-like combinations of gas and water, have the potential to provide vast amounts of natural gas from the world's oceans and polar regions. However, producing gas economically from hydrates entails major technical challenges. Proposed recovery methods such as dissociating or melting gas hydrates by heating or depressurization are currently being tested. One such test was conducted in northern Canada by the partners in the Mallik 2002 Gas Hydrate Production Research Well Program. This paper describes how resistivity logs were used to determine the size of the annular region of gas hydrate dissociation that occurred around the wellbore during the thermal test in the Mallik 5L-38 well. An open-hole logging suite, run prior to the thermal test, included array induction, array laterolog, nuclear magnetic resonance and 1.1-GHz electromagnetic propagation logs. The reservoir saturation tool was run both before and after the thermal test to monitor formation changes. A cased-hole formation resistivity log was run after the test.Baseline resistivity values in each formation layer (Rt) were established from the deep laterolog data. The resistivity in the region of gas hydrate dissociation near the wellbore (Rxo) was determined from electromagnetic propagation and reservoir saturation tool measurements. The radius of hydrate dissociation as a function of depth was then determined by means of iterative forward modeling of cased-hole formation resistivity tool response. The solution was obtained by varying the modeled dissociation radius until the modeled log overlaid the field log. Pretest gas hydrate production computer simulations had predicted that dissociation would take place at a uniform radius over the 13-ft test interval. However, the post-test resistivity modeling showed that this was not the case. The resistivity-derived dissociation radius was greatest near the outlet of the pipe that circulated hot water in the wellbore

  11. Establishment of Sand Production Prediction Model for Perforated Casing of Inclined Well%斜井套管射孔完井出砂预测模型的建立

    Institute of Scientific and Technical Information of China (English)

    杜丹阳; 谢双喜; 任宜伟

    2012-01-01

    针对目前进行的比较多的套管射孔完井,以线弹性理论为基础,通过分析定向油井井眼围岩岩石受力的应力状态和射孔孔壁应力分布,考虑井眼围岩应力对射孔孔壁应力状态的影响;根据Moh-Coulomb准则和Drucker-Prager准则分别提出两个地层稳定性指数的概念;并利用孔壁应力分布和Drucker-Prager破坏准则所建立的出砂预测模型;通过对W1油井的出砂预测,验证该模型预测结果与油井实际情况较吻合.%For completed inclined well with perforated casing, based on linear-elastic theory, stress of rock around wellbore and stress of perforated well of inclined well is analyzed. The influence of surrounding wall rock on the distribution of stress around perforation is considered. Two coefficients of formation stability are introduced according to Mohr-Coulomb criterion and Drucker-Prager criterion. Stress around perforatkm and Drucker-Prager criterion is applied to the establishment of sand production model, and software related to the prediction of sand production is programmed. In order to verify the model, sand production on several oil-wells in Yong-Eight block is predicted. It is shown that the predicted production is almost identical with the real one.

  12. Who are wellness customers?

    OpenAIRE

    Marković, Suzana; Raspor, Sanja; Komšić, Jelena

    2015-01-01

    Although wellness is becoming an increasingly popular concept in practice, academic research regarding wellness services, in general, and tourists as wellness customers, in particular, is lacking. Thus, the purpose of this study is to identify the main characteristics of wellness customers in hotel wellness settings. The study was conducted in hotel wellness centres in the Opatija Riviera (Croatia). The empirical research was organized in two steps, using two different instruments for collect...

  13. Total well dominated trees

    DEFF Research Database (Denmark)

    Finbow, Arthur; Frendrup, Allan; Vestergaard, Preben D.

    cardinality then G is a total well dominated graph. In this paper we study composition and decomposition of total well dominated trees. By a reversible process we prove that any total well dominated tree can both be reduced to and constructed from a family of three small trees....

  14. ADVANCED CEMENTS FOR GEOTHERMAL WELLS

    Energy Technology Data Exchange (ETDEWEB)

    SUGAMA,T.

    2007-01-01

    Using the conventional well cements consisting of the calcium silicate hydrates (CaO-SiO{sub 2}-H{sub 2}O system) and calcium aluminum silicate hydrates (CaO-Al{sub 2}O{sub 3}-SiO{sub 2}-H{sub 2}O system) for the integrity of geothermal wells, the serious concern confronting the cementing industries was their poor performance in mechanically supporting the metallic well casing pipes and in mitigating the pipe's corrosion in very harsh geothermal reservoirs. These difficulties are particularly acute in two geological regions: One is the deep hot downhole area ({approx} 1700 m depth at temperatures of {approx} 320 C) that contains hyper saline water with high concentrations of CO{sub 2} (> 40,000 ppm) in conjunction with {approx} 100 ppm H{sub 2}S at a mild acid of pH {approx} 5.0; the other is the upper well region between the well's surface and {approx} 1000 m depth at temperatures up to 200 C. The specific environment of the latter region is characterized by highly concentrated H{sub 2}SO{sub 4} (pH < 1.5) brine containing at least 5000 ppm CO{sub 2}. When these conventional cements are emplaced in these harsh environments, their major shortcoming is their susceptibility to reactions with hot CO{sub 2} and H{sub 2}SO4, thereby causing their deterioration brought about by CO{sub 2}-catalyzed carbonation and acid-initiated erosion. Such degradation not only reduced rapidly the strength of cements, lowering the mechanical support of casing pipes, but also increased the extent of permeability of the brine through the cement layer, promoting the rate of the pipe's corrosion. Severely carbonated and acid eroded cements often impaired the integrity of a well in less than one year; in the worst cases, casings have collapsed within three months, leading to the need for costly and time-consuming repairs or redrilling operations. These were the reasons why the geothermal well drilling and cementing industries were concerned about using conventional well

  15. Personal Wellness Tools

    Science.gov (United States)

    ... health trends related to the following: Overall mood Mood disorder symptoms Lifestyle (including sleep, exercise, etc.) Medication and side effects Physical health Using the DBSA Wellness Tracker can ...

  16. Improved germanium well detectors

    International Nuclear Information System (INIS)

    Germanium well detectors with metal surface barrier contact are comparable for general use with conventional germanium coaxial detectors. They offer very high sensitivity, the highest presently available

  17. Wellness in Industry.

    Science.gov (United States)

    Hackleman, Karen T.; And Others

    1985-01-01

    Reports on efforts of three institutions in response to need for consumer health information: Health Education Center (promotes health in southwestern Pennsylvania), Tulsa City-County Library (Oklahoma), and Wellness Council of the Midlands (WELCOM) (promotes wellness at work site in Omaha, Nebraska, area). WELCOM's 62-item reference list is…

  18. Staying Well at Work.

    Science.gov (United States)

    Blai, Boris, Jr.

    Employee wellness directly affects business/industry operations and costs. When employees are helped and encouraged to stay well, this people-positive policy results in triple benefits: reduced worker absenteeism, increased employee productivity, and lower company expenditures for health costs. Health care programs at the worksite offer these…

  19. WELL PURGING STUDY

    Science.gov (United States)

    Purging of wells with bailers has been a standard practice in the underground storage tank program as well as other groundwater regulatory programs for many years. Several studies in the Northeast and the West have shown that, under certain circumstances, samples collected witho...

  20. Water Treatment Technology - Wells.

    Science.gov (United States)

    Ross-Harrington, Melinda; Kincaid, G. David

    One of twelve water treatment technology units, this student manual on wells provides instructional materials for five competencies. (The twelve units are designed for a continuing education training course for public water supply operators.) The competencies focus on the following areas: dug, driven, and chilled wells, aquifer types, deep well…

  1. A solvable double well

    CERN Document Server

    Mohammedi, N

    2016-01-01

    We study the quantum behaviour of a particle moving in a one-dimensional double well potential. This double well is obtained by gluing together, at the origin, two shifted harmonic oscillator potentials. The Schr\\"odinger equation is exactly solvable. The requirement that discontinuities, in the wavefunction and its first derivative, are absent at the origin, leads to the quantisation of the energy eigenvalues. We also show that oscillations in time take place between two nearby single harmonic oscillator ground states. Finally, the double well potential is augmented by a Dirac delta-function potentials at the origin and the corresponding Schr\\"odinger equation is solved.

  2. Living Well with Lupus

    Science.gov (United States)

    ... Can lupus affect my friendships? Can lupus cause depression? How will lupus affect my family? How does lupus affect memory? 1 2 3 Next Share This Page Facebook Twitter Email Print Popular Topics living well nutrition ...

  3. Live Your Life Well

    Science.gov (United States)

    ... Myths About Mental Illness Support an Employee Workplace Bullying & Violence Signs of a Healthy Workplace Complementary Medicine ... satisfaction Eat well Take care of your spirit Deal better with hard times Get professional help if ...

  4. Well Logging Symposium News

    Institute of Scientific and Technical Information of China (English)

    Yang Chunsheng

    1996-01-01

    @@ ‘96 International Symposium on Well Logging Techniques for Oilfield Development under Waterflood was held on 17-21 September, 1996 in Beijing. The symdrew than 160 experts and scholars in the well logging circle from Russia,The United States, France, Britain, Indonesia and China. About 80 papers were presented duringthe symposium. Mr. Zhang Yongyi,Vice President of CNPC delivered the opening remarks.

  5. 低碳-低锰系油井套管用钢抗硫化氢应力腐蚀开裂性能%Hydrogen Sulfide Resistant Stress Corrosion Cracking of Low C-Mn Steels for Oil Well Casing

    Institute of Scientific and Technical Information of China (English)

    贺飞; 尚成嘉; 张峰; 毕宗岳

    2013-01-01

    对621 MPa(90ksi)级抗硫化氢腐蚀油井套管用钢的合金设计、热处理工艺以及组织和性能关系进行了研究,分别设计了0.08C-0.8Mn和0.20C-0.8Mn 2种低碳-低锰试验钢,并重点研究了经调质处理后试验钢的位错、析出物和碳化物对SSCC性能的影响.研究结果表明,采用低碳-低锰,结合Nb、V、Ti和B的微合金设计,通过适当的调质热处理工艺可以获得优良的力学性能、韧性和抗硫化氢应力腐蚀开裂性能,满足相关标准的要求.研究结果还表明,不共平面的位错群、细小的析出物以及弥散的高球化率碳化物,可以使钢具有很好的抗硫化氢应力腐蚀开裂性能.%Alloy design, heat treatment process and microstructure and properties relationship of 621 MPa(90ksi) grade oil well casing steels of H2S resistant corrosion were studied. Such two kinds as 0. 08C-0. 8Mn and 0. 20C-0. 8Mn of low C-Mn tested steels were designed, respectively. And the effect of dislocation, precipitation and carbide of tested steels after heat treatment on SSCC performance was investigated. The results show that the low C-Mn and Nb-V-Ti-B micro-alloy design has excellent mechanical properties, toughness and resistance to H2S stress corrosion cracking performance through proper quenching and tempering heat treatment process, to meet the requirements of the relevant standards. The results also show that the un-coplanar dislocation group, fine precipitates and dispersive high sphericity carbide would be beneficial to excellent hydrogen sulfide stress corrosion cracking resistance.

  6. Geothermal Well Stimulation

    Energy Technology Data Exchange (ETDEWEB)

    Campbell, D. A.; Morris, C. W.; Sinclair, A. R.; Hanold, R. J.; Vetter, O. J.

    1981-03-01

    The stimulation of geothermal wells presents some new and challenging problems. Formation temperatures in the 300-600 F range can be expected. The behavior of stimulation fluids, frac proppants, and equipment at these temperatures in a hostile brine environment must be carefully evaluated before performance expectations can be determined. In order to avoid possible damage to the producing horizon of the formation, high temperature chemical compatibility between the in situ materials and the stimulation materials must be verified. Perhaps most significant of all, in geothermal wells the required techniques must be capable of bringing about the production of very large amounts of fluid. This necessity for high flow rates represents a significant departure from conventional petroleum well stimulation and demands the creation of very high near-wellbore permeability and/or fractures with very high flow conductivity.

  7. New challenges? Well, certainly!

    DEFF Research Database (Denmark)

    Lauridsen, Karen M.

    New challenges? Well, certainly! With the internationalization of European higher education, teaching and learning through the medium of a foreign language has become more and more widespread in recent years. This requires, of course, that lecturers as well as students have the necessary language......, different cultural backgrounds, different educational backgrounds and be used to a diverse set of didactic traditions and norms. Given this diversity, higher education institutions (HEIs) need to have measures in place to deal with this. Policies and practices must go hand in hand and, more often than not...

  8. Single well techniques

    International Nuclear Information System (INIS)

    The single well technique method includes measurement of parameters of groundwater flow in saturated rock. For determination of filtration velocity the dilution of radioactive tracer is measured, for direction logging the collimeter is rotated in the probe linked with the compass. The limiting factor for measurement of high filtration velocities is the occurrence of turbulent flow. The single well technique is used in civil engineering projects, water works and subsurface drainage of liquid waste from disposal sites. The radioactive tracer method for logging the vertical fluid movement in bore-holes is broadly used in groundwater survey and exploitation. (author)

  9. Child Wellness and Happiness

    Science.gov (United States)

    Rettew, David C.

    2009-01-01

    Wellness and happiness should be considered in the clinical treatment of child and adolescent psychiatry, in addition with thinking about illness. Meanwhile, various studies on child and adolescent psychiatry,which includes an article from the "Journal of Happiness Studies," are discussed.

  10. Optimization of well field management

    DEFF Research Database (Denmark)

    Hansen, Annette Kirstine

    for optimizing well field man- agement using multi-objective optimization is developed. The optimization uses the Strength Pareto Evolutionary Algorithm 2 (SPEA2) to find the Pareto front be- tween the conflicting objectives. The Pareto front is a set of non-inferior optimal points and provides an important tool...... are to minimize the amount of infiltration, and to minimize the risk of getting contaminated water into the production wells. The optimization problem is subjected to a daily demand fulfilment constraint. Constant and sequential scheduling optimization is performed on the Hardhof case. The constant scheduling...... objectives. The sequential scheduling optimizes the management stepwise for daily time steps, and allows the final management to vary in time. The research shows that this method performs better than the constant scheduling when large variations in the hydrological conditions occur. This novel approach can...

  11. Recommender System for Personalised Wellness Therapy

    Directory of Open Access Journals (Sweden)

    Thean Pheng Lim

    2013-10-01

    Full Text Available rising costs and risks in health care have shifted the preference of individuals from health treatment to disease prevention. This prevention treatment is known as wellness. In recent years, the Internet has become a popular place for wellness-conscious users to search for wellness-related information and solutions. As the user community becomes more wellness conscious, service improvement is needed to help users find relevant personalised wellness solutions. Due to rapid development in the wellness market, users value convenient access to wellness services. Most wellness websites reflect common health informatics approaches; these amount to more than 70,000 sites worldwide. Thus, the wellness industry should improve its Internet services in order to provide better and more convenient customer service. This paper discusses the development of a wellness recommender system that would help users find and adapt suitable personalised wellness therapy treatments based on their individual needs. This paper introduces new approaches that enhance the convenience and quality of wellness information delivery on the Internet. The wellness recommendation task is performed using an Artificial Intelligence technique of hybrid case-based reasoning (HCBR. HCBR solves users’ current wellness problems by applying solutions from similar cases in the past. From the evaluation results for our prototype wellness recommendation system, we conclude that wellness consultants are using consistent wellness knowledge to recommend solutions for sample wellness cases generated through an online consultation form. Thus, the proposed model can be integrated into wellness websites to enable users to search for suitable personalized wellness therapy treatment based on their health condition.

  12. Downhole burner for wells

    Energy Technology Data Exchange (ETDEWEB)

    Brandt, H.; Hazard, H.R.; Hummell, J.D.; Schulz, E.J.

    1966-03-22

    This is a downhole gas and air burner for use in wells to stimulate production. The combustible mixture is supplied to the combustion chamber of the downhole burner through a delivery tube. This tube includes a flow-back preventer and a check valve. The flashback preventers consist of a porous material which has restricted flow paths. The check valve controls the flow of combustible mixture to the combustion chamber and prevents undesirable pulsating flow through the combustion chamber and the delivery tube. The check valve also prevents flooding of the combustion chamber by well fluid. The burner is ignited electrically. The porous material can be flat strip or a conically shaped piece of thin porous metal.

  13. Two definitions of waiting well.

    Science.gov (United States)

    Sweeny, Kate; Reynolds, Chandra A; Falkenstein, Angelica; Andrews, Sara E; Dooley, Michael D

    2016-02-01

    Waiting for uncertain news is often distressing, at times even more distressing than facing bad news. The goal of this article was to investigate strategies for "waiting well" during these periods of uncertainty. Specifically, we propose 2 definitions of waiting well. First, people can wait in such a way as to ease their distress during the waiting period. Second, people could wait in such a way as to ease the pain of bad news or enhance the thrill of good news. We conducted a longitudinal study of law graduates (N = 230) awaiting their result on the California bar exam. Participants completed questionnaires prior to the exam, every 2 weeks during the 4-month waiting period, and shortly after learning whether they passed or failed. Cross-lagged models revealed that participants were quite unsuccessful at waiting well by our first definition. That is, their coping strategies were ineffective for reducing distress associated with uncertainty, apparently even backfiring in some cases. However, multiple regression analyses examining relationships between waiting experiences and responses to good and bad news found that many participants were successful at waiting well according to our second definition: Participants who suffered through a waiting period marked by anxiety, rumination, and pessimism responded more productively to bad news and more joyfully to good news, as compared with participants who suffered little during the wait. These findings substantiate the difficulty of enduring a stressful waiting period but suggest that this difficulty may pay off once the news arrives. PMID:26461244

  14. Drilling and well technology

    Energy Technology Data Exchange (ETDEWEB)

    Milheim, K. [Mining University Leoben Institute for Drilling Technology, (Austria)

    1996-12-31

    Over a billion dollars a year is lost by exploration and production companies drilling wells because of the lack of learn curve management (LMC) practices. This paper presents the importance of the LMC concept, what it is, why LMC has not yet been recognized as a major initiative for improving drilling cost performance. The paper discusses the different types of planning, problems with implementation of plans, the use and misuse of drilling results and data bases, and the lack of post analysis practices. The major point of the paper is to show the massive savings that can be achieved by valuing LMC, learning LMC and successfully implementing LMC. . 2 refs., 5 figs.

  15. Quantum well lasers

    CERN Document Server

    Zory, Jr, Peter S; Kelley, Paul

    1993-01-01

    This book provides the information necessary for the reader to achieve a thorough understanding of all aspects of QW lasers - from the basic mechanism of optical gain, through the current technolgoical state of the art, to the future technologies of quantum wires and quantum dots. In view of the growing importance of QW lasers, this book should be read by all those with an active interest in laser science and technology, from the advanced student to the experienced laser scientist.* The first comprehensive book-length treatment of quantum well lasers* Provides a detailed treatment

  16. Modeling Quantum Well Lasers

    Directory of Open Access Journals (Sweden)

    Dan Alexandru Anghel

    2012-01-01

    Full Text Available In semiconductor laser modeling, a good mathematical model gives near-reality results. Three methods of modeling solutions from the rate equations are presented and analyzed. A method based on the rate equations modeled in Simulink to describe quantum well lasers was presented. For different signal types like step function, saw tooth and sinus used as input, a good response of the used equations is obtained. Circuit model resulting from one of the rate equations models is presented and simulated in SPICE. Results show a good modeling behavior. Numerical simulation in MathCad gives satisfactory results for the study of the transitory and dynamic operation at small level of the injection current. The obtained numerical results show the specific limits of each model, according to theoretical analysis. Based on these results, software can be built that integrates circuit simulation and other modeling methods for quantum well lasers to have a tool that model and analysis these devices from all points of view.

  17. Well maintenance evaluation.

    Energy Technology Data Exchange (ETDEWEB)

    McGhan, V.L.

    1978-10-01

    The ground-water monitoring program is an integral part of the total environmental surveillance program for the Hanford Site. Extensive ground-water data have been collected and studied over the past several decades. All of this data is, of course, dependent upon the quality of the ground-water sampling structures. A program to upgrade the quality of ground-water sampling was initiated in early 1974. That program also included changes to avoid cross-contamination of ground-water samples by installing permanently mounted individual pumps in many of the sampling wells. These two programs have resulted in increased reliability of both the ground-water samples and the analytical data. This basic quality assurance effort has provided a high level of confidence in ground-water surveillance. The current program is providing data with reliabilities not previously attainable.

  18. Poor understanding of the hydrogeological structure is a main cause of hand-dug wells failure in developing countries: A case study of a Precambrian basement aquifer in Bugesera region (Burundi)

    Science.gov (United States)

    Bakundukize, Charles; Mtoni, Yohana; Martens, Kristine; Van Camp, Marc; Walraevens, Kristine

    2016-09-01

    This study investigates a Precambrian basement aquifer in Bugesera region, a typical African rural area in northeastern Burundi. Domestic water supply relies on groundwater which is tapped through hand-dug wells. Despite several attempts to increase the number of water points in the area, the water demand is still far from being met as a result of the high rate of well failure. This paper seeks to understand whether the hydrogeological structure and the spatial distribution of hydraulic parameters can explain the low productivity and the high failure rate of hand-dug wells. The hydrogeological structure inferred from the interpretation of a large number of vertical electrical soundings (VES) reveals a typical sequence of geoelectrical layers, which is characterized by an overall upwards fining from the fresh basement, over the fractured/weathered basement, to the overburden or saprolite with a clay-rich layer on top. Whereas the overall aquifer potential mainly depends on the thickness of the weathered overburden, the aquifer potential for shallow hand-dug wells is determined by the hydraulic conductivity of the upper few meters of the saturated zone. This upper zone was investigated in the pumping tests. The spatial distribution of the specific capacity reveals a wide variation of hydraulic parameters, depending on the well's position in the depth profile of the aquifer's hydraulic conductivity. The thickness of the potential aquifer is highest in the central part of the study area (pegmatitic and granitic intrusions) which has the highest overall aquifer potential compared to the surrounding metasedimentary formations. However, a thick weathered overburden will increase the groundwater potential of an aquifer for deep boreholes, whereas for hand-dug wells, the productivity can only be high if the thickness of the weathered overburden is small enough, or the water table is deep enough, to allow to tap the coarse part at the base of the overburden and/or part of

  19. An investigation analysing the effects of introducing workplace fun on level of job satisfaction and well-being on middle level management in India: a case of Rosy Blue Diamond and Orra Jewellery

    OpenAIRE

    Mehta, Ria

    2014-01-01

    Work pressure on the employees is increasing with rising competition. The motive of the paper is to understand the impact of introducing fun activities on overall employee satisfaction and welfare. This study makes an attempt to study these aspects in relation to the Indian jewellery industry. Here two organizations have been selected who fulfils the case requirement. Data for the study was collected from 100 participants, from which 50 were from Rosy Blue Diamonds and rest 50 being from Orra...

  20. Abandoning wells working group

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    The primary objective of this working group is to identify major technical, regulatory, and environmental issues that are relevant to the abandonment of offshore wellbores. Once the issues have been identified, the working group also has the objective of making recommendations or providing potential solutions for consideration. Areas for process improvement will be identified and {open_quotes}best practices{close_quotes} will be discussed and compared to {open_quotes}minimum standards.{close_quotes} The working group will primarily focus on wellbore abandonment in the Gulf of Mexico. However, workshop participants are encouraged to discuss international issues which may be relevant to wellbore abandonment practices in the Gulf of Mexico. The Abandoning Wells Group has identified several major areas for discussion that have concerns related to both operators and service companies performing wellbore abandonments in the Gulf of Mexico. The following broad topics were selected for the agenda: (1) MMS minimum requirements and state regulations. (2) Co-existence of best practices, new technology, and P & A economics. (3) Liability and environmental issues relating to wellbore abandonment.

  1. Spacecraft Architecture and well being

    Science.gov (United States)

    Ören, Ayşe

    2016-07-01

    As we embark on a journey for new homes in the new worlds to lay solid foundations, we should consider not only the survival of frontiers but also well-being of those to live in zero gravity. As a versatile science, architecture encompasses abstract human needs as well. On our new different direction in the course of the Homo sapiens evolution, we can do this with designs addressing both our needs and senses. Well-being of humans can be achieved by creating environments supporting the cognitive and social stages in the evolution process. Space stations are going through their own evolution process. Any step taken can serve as a reference for further attempts. When studying the history of architecture, window designing is discussed in a later phase, which is the case for building a spaceship as well. We lean on the places we live both physically and metaphorically. The feeling of belonging is essential here, entailing trans-humanism, which is significant since the environment therein is like a dress comfortable enough to fit in, meeting needs without any burden. Utilizing the advent of technology, we can create moods and atmospheres to regulate night and day cycles, thus we can turn claustrophobic places into cozy or dream-like places. Senses provoke a psychological sensation going beyond cultural codes as they are rooted within consciousness, which allows designers to create a mood within a space that tells a story and evokes an emotional impact. Color, amount of light, sound and odor are not superficial. As much as intangible, they are real and powerful tools with a physical presence. Tapping into induction, we can solve a whole system based on a part thereof. Therefore, fractal designs may not yield good results unless used correctly in terms of design although they are functional, which makes geometric arrangement critical.

  2. A case report of motor neuron disease in a patient showing significant level of DDTs, HCHs and organophosphate metabolites in hair as well as levels of hexane and toluene in blood.

    Science.gov (United States)

    Kanavouras, Konstantinos; Tzatzarakis, Manolis N; Mastorodemos, Vasileios; Plaitakis, Andreas; Tsatsakis, Aristidis M

    2011-11-01

    Motor neuron disease is a devastating neurodegenerative condition, with the majority of sporadic, non-familial cases being of unknown etiology. Several epidemiological studies have suggested that occupational exposure to chemicals may be associated with disease pathogenesis. We report the case of a patient developing progressive motor neuron disease, who was chronically exposed to pesticides and organic solvents. The patient presented with leg spasticity and developed gradually clinical signs suggestive of amyotrophic lateral sclerosis, which was supported by the neurophysiologic and radiological findings. Our report is an evidence based case of combined exposure to organochlorine (DDTs), organophosphate pesticides (OPs) and organic solvents as confirmed by laboratory analysis in samples of blood and hair confirming systematic exposure. The concentration of non-specific dialkylphosphates metabolites (DAPs) of OPs in hair (dimethyphopshate (DMP) 1289.4 pg/mg and diethylphosphate (DEP) 709.4 pg/mg) and of DDTs (opDDE 484.0 pg/mg, ppDDE 526.6 pg/mg, opDDD 448.4 pg/mg, ppDDD+opDDT 259.9 pg/mg and ppDDT 573.7 pg/mg) were considerably significant. Toluene and n-hexane were also detected in blood on admission at hospital and quantified (1.23 and 0.87 μg/l, respectively), while 3 months after hospitalization blood testing was found negative for toluene and n-hexane and hair analysis was provided decrease levels of HCHs, DDTs and DAPs. PMID:21851830

  3. Electricity generation from enhanced geothermal systems by oilfield produced water circulating through reservoir stimulated by staged fracturing technology for horizontal wells: A case study in Xujiaweizi area in Daqing Oilfield, China

    International Nuclear Information System (INIS)

    In this paper, the feasibility of generating electricity from EGS (enhanced geothermal systems) by oilfield produced water circulating through reservoir stimulated by staged fracturing technology for horizontal wells is investigated based on the geological data of Xujiaweizi area, located in the Daqing Oilfield, northeast China. HDR (hot dry rock) resource potential assessment is carried out by using volumetric method. Reservoir stimulation is numerically simulated based on the geological data of well YS-1 and field fracturing experience in this region. Geometric dimensions and flow conductivity of the resulting fracture are imported into the hydro-thermal model to calculate the electricity generation potential of the proposed EGS power plant. An EGS design scheme is proposed based on the simulation results. The system is also evaluated from the economic and environmental aspects. The results indicate that HDR resource in Xujiaweizi area is of great potential for development. Through the staged fracturing technology for horizontal wells, electricity generation power of the proposed EGS project can roughly meet the commercial standard. For 20 years of continuous production, power generation from the proposed EGS power plant is economic feasible. Meanwhile, significant reductions in greenhouse gas emissions can be achieved. - Highlights: • Staged fracturing technology for horizontal well is used in HDR (hot dry rock) development. • Fracturing simulations and heat production simulations are combined. • A 3 MW power plant is designed in Xujiaweizi based on the simulation results

  4. Detecting Unobserved Heterogeneity in the Relationship between Subjective Well-Being and Satisfaction in Various Domains of Life Using the REBUS-PLS Path Modelling Approach: A Case Study

    Science.gov (United States)

    Zanin, Luca

    2013-01-01

    In this article, we propose a model to estimate the direct and indirect effects of the relationship between subjective well-being and satisfaction in various domains of life using a partial least squares path modelling approach in a structural equation model framework. A drawback of these models is that they assume homogeneous behaviour over the…

  5. Disentangling the effects of nanoscale structural variations on the light emission wavelength of single nano-emitters: InGaN/GaN multiquantum well nano-LEDs for a case study.

    Science.gov (United States)

    Sarau, George; Heilmann, Martin; Latzel, Michael; Christiansen, Silke

    2014-10-21

    The scattering in the light emission wavelength of semiconductor nano-emitters assigned to nanoscale variations in strain, thickness, and composition is critical in current and novel nanotechnologies from highly efficient light sources to photovoltaics. Here, we present a correlated experimental and theoretical study of single nanorod light emitting diodes (nano-LEDs) based on InGaN/GaN multiquantum wells to separate the contributions of these intrinsic fluctuations. Cathodoluminescence measurements show that nano-LEDs with identical strain states probed by non-resonant micro-Raman spectroscopy can radiate light at different wavelengths. The deviations in the measured optical transitions agree very well with band profile calculations for quantum well thicknesses of 2.07-2.72 nm and In fractions of 17.5-19.5% tightly enclosing the growth values. The nanorod surface roughness controls the appearance of surface optical phonon modes with direct implications on the design of phonon assisted nano-LED devices. This work establishes a new, simple, and powerful methodology for fundamental understanding as well as quantitative analysis of the strain - light emission relationship and surface-related phenomena in the emerging field of nano-emitters.

  6. A Survey of Subjective Well-being of University Students--A Case Study of Fuqing Branch of Fujian Normal University%一般本科院校大学生主观幸福感调查研究

    Institute of Scientific and Technical Information of China (English)

    陈小红

    2014-01-01

    The paper probes into the current situation of subjective well-being of university students based on GWBS. From the survey, the author concludes that general level of subjective well-being among university students is low to moderate. As far as gender is concerned, male college students have higher level of subjective well-being than their female counterparts. When comes to different grade they are in now, there is no considerable difference. However, there are some notable differences among the students in the following three aspects: concerns of their health, control of their emotions and behaviors as well as their psychological stress and relaxation. Besides, the author also finds out that there is no noticeable difference in the subjective well-being between city students and country students. However, students from countryside are generally more energetic than those from city.%通过采用总体幸福感量表(GWBS),调查一般本科院校大学生主观幸福感现状。发现大学生主观幸福感整体水平中等偏低,但男大学生主观幸福感总分显著高于女大学生;不同年级大学生主观幸福感没有显著差异,但在对健康的担心、对情感和行为的控制、松弛与紧张三个维度上存在显著差异;不同生源地的大学生主观幸福感没有显著差异,但农村大学生的精力显著高于城市大学生。

  7. Cost model for geothermal wells applied to the Cerro Prieto geothermal field case, BC Abstract; Modelo de costeo de pozos geotermicos aplicado para el caso del campo geotermico de Cerro Prieto, BC

    Energy Technology Data Exchange (ETDEWEB)

    Vaca Serrano, Jaime M.E [Comision Federal de Electricidad, Gerencia de Proyectos Geotermoelectricos, Morelia, Michoacan (Mexico)]. E-mail: jaime.vaca@cfe.gob.mx

    2008-01-15

    A project for drilling geothermal wells to produce electrical energy can be defined as a sequence of plans to get steam or geothermal fluids to satisfy a previously known demand, and, under the best possible conditions, to obtain payment. This paper presents a cost model for nine wells drilled at the Cerro Prieto geothermal field in 2005 and 2006 to supply steam to the power plants operating in the field. The cost model is based on the well cost, the initial steam production, the annual decline of steam, the drilling schedule and the break-even point for each well. The model shows the cost of steam by the ton and the sale price needed to determine the discount rate and the investment return time. [Spanish] Un proyecto de perforacion de pozos geotermicos puede definirse como una secuencia o sucesion de planes para obtener vapor o fluidos geotermicos destinados a satisfacer una demanda previamente determinada, que se emplearan principalmente para generar energia electrica, bajo las mejores condiciones para obtener un pago. Este trabajo presenta un modelo de costeo para nueve pozos en el campo geotermico de Cerro Prieto, que fueron perforados entre 2005 y 2006 como parte del suministro de vapor para las plantas generadoras que operan en este campo. El modelo de costeo se basa en el costo por pozo, la produccion inicial de vapor, la declinacion anual de vapor, los intereses de las obras de perforacion y el punto de equilibrio para cada pozo. Los resultados permiten conocer el costo de la tonelada de vapor y el precio de venta para determinar la tasa de descuento y el tiempo de retorno de la inversion.

  8. Computer Security: Well fought, FP!

    CERN Multimedia

    Stefan Lueders, Computer Security Team

    2015-01-01

    We are used to spam and phishing emails. But at the end of last year, a very special email struck one of our colleagues in the FP Department.   An accountant was gently asked in an email from “Rolf.Heuer@cern.ch” to prepare a financial transaction - in the strictest confidence. A phone call from the beneficiary to the accountant was made in an attempt to support this request. Despite being instructed not to talk to anyone, the e-mail, the phone conversation and the circumstances were all so suspicious that our colleague consulted his hierarchy, the internal audit service and us. Well done, FP Department! This is a rare case of an attempt at “social engineering”, i.e. luring someone into doing something detrimental to the Organization. The e-mail was fake. While it appeared to come from “Rolf.Heuer@cern.ch”, it actually came from an alleged fraudster outside CERN. The e-mail and the phone call showed that he was well prepared and dire...

  9. Assessment of Rock-Eval Tmax Data in Bambra-2 Well of Barrow Sub-basin,North West Shelf of Australia: A Case Study of Contaminated Rock-Eval Data

    Institute of Scientific and Technical Information of China (English)

    He Sheng; Alex Kaiko; Mike Middleton; Jiang Chunqing

    2003-01-01

    The contamination of cuttings and side-wall core (SWC) samples in the Bambra-2 well by drilling-mud additives and natural hydrocarbons may cause Rock-Eval Tmax (℃) data to be suspect, and affect its utility in the assessment of thermal maturity. The Rock-Eval results of 284 cuttings samples,31 side-wall core samples and conventional core samples from the Jurassic-Cretaceous sedimentary sequences in the Bambra-2 well are presented in this paper. Significantly lower Tmax values from cuttings samples compared with Tmax values from conventional core samples and solvent extracted SWC samples,from the deeper and higher maturity interval, are thought to have been caused by contamination by diesel and other drilling-mud additives. The cuttings samples in the Barrow Group of Cretaceous may be contaminated by natural hydrocarbons, resulting their Tmax values to be 2-10 ℃ lower than a regularly increased Tmax trend from core samples. This study indicates that more reliable Rock-Eval Tmax data are obtained from the conventional core samples and solvent extracted SWC samples. This study also indicates that the Tmax values from some SWC samples were also affected by free hydrocarbons, due to the use of diesel as a mud additive as well.

  10. A case report of motor neuron disease in a patient showing significant level of DDTs, HCHs and organophosphate metabolites in hair as well as levels of hexane and toluene in blood

    Energy Technology Data Exchange (ETDEWEB)

    Kanavouras, Konstantinos [Department of Neurology, Medical School, University of Crete, Heraklion, Crete (Greece); Tzatzarakis, Manolis N. [Center of Toxicology Science and Research, University of Crete, Heraklion, Crete (Greece); Mastorodemos, Vasileios; Plaitakis, Andreas [Department of Neurology, Medical School, University of Crete, Heraklion, Crete (Greece); Tsatsakis, Aristidis M., E-mail: aris@med.uoc.gr [Center of Toxicology Science and Research, University of Crete, Heraklion, Crete (Greece)

    2011-11-15

    Motor neuron disease is a devastating neurodegenerative condition, with the majority of sporadic, non-familial cases being of unknown etiology. Several epidemiological studies have suggested that occupational exposure to chemicals may be associated with disease pathogenesis. We report the case of a patient developing progressive motor neuron disease, who was chronically exposed to pesticides and organic solvents. The patient presented with leg spasticity and developed gradually clinical signs suggestive of amyotrophic lateral sclerosis, which was supported by the neurophysiologic and radiological findings. Our report is an evidence based case of combined exposure to organochlorine (DDTs), organophosphate pesticides (OPs) and organic solvents as confirmed by laboratory analysis in samples of blood and hair confirming systematic exposure. The concentration of non-specific dialkylphosphates metabolites (DAPs) of OPs in hair (dimethyphopshate (DMP) 1289.4 pg/mg and diethylphosphate (DEP) 709.4 pg/mg) and of DDTs (opDDE 484.0 pg/mg, ppDDE 526.6 pg/mg, opDDD 448.4 pg/mg, ppDDD + opDDT 259.9 pg/mg and ppDDT 573.7 pg/mg) were considerably significant. Toluene and n-hexane were also detected in blood on admission at hospital and quantified (1.23 and 0.87 {mu}g/l, respectively), while 3 months after hospitalization blood testing was found negative for toluene and n-hexane and hair analysis was provided decrease levels of HCHs, DDTs and DAPs. -- Highlights: Black-Right-Pointing-Pointer Exposure to pesticides and organic solvents might be a risk factor for sporadic MND. Black-Right-Pointing-Pointer We report a patient who developed progressive upper and lower motor neuron disease. Black-Right-Pointing-Pointer The patient had a history of occupational exposure to pesticides and solvents. Black-Right-Pointing-Pointer High DDTs' levels and increased levels of DMP and DEP were measured in his hair. Black-Right-Pointing-Pointer The patients' exposure to chemicals might

  11. A case report of motor neuron disease in a patient showing significant level of DDTs, HCHs and organophosphate metabolites in hair as well as levels of hexane and toluene in blood

    International Nuclear Information System (INIS)

    Motor neuron disease is a devastating neurodegenerative condition, with the majority of sporadic, non-familial cases being of unknown etiology. Several epidemiological studies have suggested that occupational exposure to chemicals may be associated with disease pathogenesis. We report the case of a patient developing progressive motor neuron disease, who was chronically exposed to pesticides and organic solvents. The patient presented with leg spasticity and developed gradually clinical signs suggestive of amyotrophic lateral sclerosis, which was supported by the neurophysiologic and radiological findings. Our report is an evidence based case of combined exposure to organochlorine (DDTs), organophosphate pesticides (OPs) and organic solvents as confirmed by laboratory analysis in samples of blood and hair confirming systematic exposure. The concentration of non-specific dialkylphosphates metabolites (DAPs) of OPs in hair (dimethyphopshate (DMP) 1289.4 pg/mg and diethylphosphate (DEP) 709.4 pg/mg) and of DDTs (opDDE 484.0 pg/mg, ppDDE 526.6 pg/mg, opDDD 448.4 pg/mg, ppDDD + opDDT 259.9 pg/mg and ppDDT 573.7 pg/mg) were considerably significant. Toluene and n-hexane were also detected in blood on admission at hospital and quantified (1.23 and 0.87 μg/l, respectively), while 3 months after hospitalization blood testing was found negative for toluene and n-hexane and hair analysis was provided decrease levels of HCHs, DDTs and DAPs. -- Highlights: ► Exposure to pesticides and organic solvents might be a risk factor for sporadic MND. ► We report a patient who developed progressive upper and lower motor neuron disease. ► The patient had a history of occupational exposure to pesticides and solvents. ► High DDTs’ levels and increased levels of DMP and DEP were measured in his hair. ► The patients’ exposure to chemicals might have played a role in MND development.

  12. Knowledge management in PETROBRAS production engineering: history and case study on the community of practices of well engineering; Gestao do conhecimento na Engenharia de Producao da Petrobras: historico e estudo de caso da comunidade de praticas de engenharia de poco

    Energy Technology Data Exchange (ETDEWEB)

    Rosolen, Marcos Antonio [E and P Engenharia de Producao. Gerencia de Fluidos, Estimulacao e Contencao de Areia da Engenharia de Poco, RJ (Brazil)], e-mail: marcosrosolen@petrobras.com.br; Teixeira, Cristina Gaudio [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil). Tecnologia da Informacao e Telecomunicacoes. Gerencia de Gestao de Dados e Informacoes de E and P da TIC Exploracao e Producao], e-mail: Gaudio@petrobras.com.br

    2008-12-15

    The Communities of Practices (CoP) are part of the knowledge management process of Production Engineering in the Exploration and Production Area (E and P-ENGP), and are responsible to facilitate the existing knowledge to flow through the various organizational units, promoting integration between the professionals working in them. Such communities aim to stimulate learning and exchange of information by using best practices, lessons learned, technical alerts, yellow pages and discussion forums (technical forums) so as to support the sharing process. They were implanted in order to capture, structure, and disseminate part of the tacit knowledge that lives in the drawers and hard drives of professionals in the area, allowing their experiences to be well known so they can be reused. This work records the history of all efforts made to implement this process and focus on the community of practices of well engineering, one of the pioneers in this process, to illustrate the evolution of this initiative and describe its stages and results. (author)

  13. Applicability assessment of three different production casings in sour gas wells%酸性气井不同井段三种套管钢的适用性评价

    Institute of Scientific and Technical Information of China (English)

    曾德智; 张乃艳; 陈睿; 汪枫; 施太和; 任呈强

    2015-01-01

    In order to assess the applicability and effect of temperature on corrosion behavior ,the common specimens of three production casing steels(T95 ,110SS‐2Cr and 825 steel) in different depths were subjected to acidic solution containing both 0 .55 MPa H2S and 0 .75 MPa CO2 at 55-100 ℃for 72 h in an autoclave ,and micromorphologies and chemical compositions of corrosion products were obtained through scanning electron microscope (SEM ) and energy dispersive X‐ray (EDX) ,respec‐tively .The weight‐loss results show that the corrosion of 825 steel is slight according to the SY5329 standard ,and the corrosion rate of 110SS‐2Cr is lower than that of T95 steel ,which explains its bet‐ter anti‐electrochemical corrosion performance .Besides ,the corrosion rates of T 95 steel and 110SS‐2Cr steel increase as temperature rises .The microscopic analysis indicates that with temperature in‐creasing ,the corrosion products of T 95 steel and 110SS‐2Cr steel thicken and the tendency of crystal‐lization and agglomeration is obvious ,and the main chemical compositions are FexSy ,FeCO3 and small amount of Cr .It is noted that the Cr content of 110SS‐2Cr steel is higher than that of T 95 steel ,which accounts for the better protective effect and lower corrosion rate of 110SS‐2Cr steel .Therefore , T95 steel is suggested to apply at the wellhead of production casing for its economy and practicality , the 825 steel can be used below the packer of production casing with its higher expense ,110SS‐2Cr steel is appropriate to be used in the middle of production casing because of its poor SSCC resistance .%为考察含 H2 S/CO2酸性气井不同井段3种常用套管钢(T95钢、110SS‐2Cr钢和825钢)的适用性及温度对其腐蚀行为的影响,利用高温高压釜在 H2 S分压0.55 M Pa、CO2分压0.75 M Pa、温度55~100℃条件下,对3种钢材的失重腐蚀性能进行了测试,并辅以扫描电镜观察腐蚀产物膜的微观形

  14. Design of Wireless Data Acquisition System Based on GPRS for Oil Well Casing pulse Current Cathodic portection%基于GPRS的油井套管脉冲电流阴极保护无线数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    许庆; 周好斌; 袁森; 张涛

    2015-01-01

    In the exploitation of oilfield, the corrosion of oil well casing is concerned, and the cathodic protection technology is an effective method to inhibit the corrosion of oil well casing. The parameters of the pulse current cathodic protection can be detected, which can reduce the risk of the oil well casing corrosion. Compared with the traditional manual detection, oil well casing in pulsed current cathodic protection of wireless data acquisition system which based on GPRS can realize real time and synchronous monitoring, and improve the detection accuracy and save a lot of human resources, achieve the oil well casing in pulsed current cathodic protection of intensive, digital management.%随着油田的开采,油井套管的腐蚀问题备受关注,脉冲电流阴极保护技术是一种抑制油井套管腐蚀的行之有效的手段。对脉冲电流阴极保护各项参数进行检测,可以降低油井套管发生腐蚀的风险。与传统的人工检测相比,基于GPRS的油井套管脉冲电流阴极保护无线数据采集系统可以对油井套管脉冲电流阴极保护进行实时与同步监测,在提高了检测精度的同时节省了大量的人力资源,实现了油井套管脉冲电流阴极保护的集约化、数字化管理。

  15. Wellness media: Consumption motives and relation to wellness orientation

    OpenAIRE

    Laine, Katariina

    2015-01-01

    Wellness is one of today's prominent megatrends influencing people's consumption motives. It shows as consumers' increased orientation towards wellness, as well as increased supply of wellness related products and services. This paper investigates the wellness phenomenon in the specific context of media consumption. While motives of media consumption in general have been widely studied in communication research, wellness themed media content has not yet received much academic attention. The p...

  16. Constraining the period of hydrocarbon accumulation by fluid inclusion, molecular biomarker and ESR dating techniques: A case study from the Tazhong 45 well, Tarim Basin%塔中45井油气藏成藏期的厘定

    Institute of Scientific and Technical Information of China (English)

    张鼐; 张宝收; 赵瑞华; 杨晓光; 南燕云; 赵澄雨

    2012-01-01

    在塔中45井的萤石中发现两期烃包裹体:第Ⅰ期烃包裹体为产于萤石中的发黄色弱荧光的原生液相烃包裹体,沿萤石生长纹分布,与萤石同生;第Ⅱ期烃包裹体为产于萤石中的发蓝白色强荧光的次生气液相烃包裹体,分布在萤石的愈合缝中,晚于萤石形成.烃包裹体组分分析和赋存矿物测年结果表明,第Ⅰ期油来源于中上奥陶统,是一期成熟油的充注;第Ⅱ期油应形成于喜马拉雅期,主要来源于高成熟的寒武系烃源岩,是由寒武系原油裂解后再一次大规模轻质油侵入而形成的,第Ⅱ期是奥陶系萤石层段的油气藏主要成藏期.%Two distinct generations of hydrocarbon inclusions are found in vein fluorite from the Ordovician carbonate reservoirs in the Tazhong 45 well, Tarim Basin. The first generation of inclusions is characterized by weak yellow fluorescence, liquid phase, and distribution along the fluorite growth bands. The second generation of inclusions is of strong white fluorescence, gas-liquid phase, and occurrence in the suture lines of fluorite. Based on an integrated investigation of trapping temperature, formation water salinity, molecular compositions of the aqueous and petroleum fluid inclusions, and isotope and ESR dating of the host minerals, it is concluded that: (1) the fluorite vein was formed by a deep fluoride-rich fluid brought into the Ordovician carbonate formation through deep faults during the Permian; (2) the fluoride-rich fluid was a low temperature hydrothermal fluid probably generated from an acidic magmatic activity in the region during the Late Hercynian; (3) the charge of mature liquid hydrocarbons from the Middle-Upper Ordovician source rock was concomitant with the fluorite crystallization in the Tazhong 45 carbonate reservoirs, which resulted in the formation of the first generation of petroleum inclusions in the fluorite growth bands; (4) the second generation of hydrocarbon inclusions

  17. Wells Syndrome Mimicking Erythema Elevatum Diutinum

    OpenAIRE

    Rai Ranju; Sharma Vinod Kumar; Kaur Inderjeet; Kumar Bhushan

    2001-01-01

    Wells syndrome is a rare inflammatory dermatosis clinically characterised by recurrent itchy erythematous oedematous plaques with features resembling both urticaria and cellulites and histologically characterised by tissue eosinophilia, oedema and flame figures. Erythema elevatum diutinum(EED) is a chronic localized form of cutaneous vasculitis clinically consisting of symmetrical papules and nodules most often of the back of the hands. We present a case of wells syndrome mimicking EED clini...

  18. Wells Syndrome Mimicking Erythema Elevatum Diutinum

    Directory of Open Access Journals (Sweden)

    Rai Ranju

    2001-01-01

    Full Text Available Wells syndrome is a rare inflammatory dermatosis clinically characterised by recurrent itchy erythematous oedematous plaques with features resembling both urticaria and cellulites and histologically characterised by tissue eosinophilia, oedema and flame figures. Erythema elevatum diutinum(EED is a chronic localized form of cutaneous vasculitis clinically consisting of symmetrical papules and nodules most often of the back of the hands. We present a case of wells syndrome mimicking EED clinically.

  19. Work and well-being in teams

    OpenAIRE

    NIELSEN, Karina

    2003-01-01

    This thesis examines work and well-being in relationship to teamwork in two organisations employing professionals; one organising work in Japanese style teams and one with self-managing work teams. It offers a critique of current research on employee well-being in teams and outlines some ways forward for filling in the gaps in existing research. Using two case studies, the working conditions may be in teamwork organisations are investigated. Second, the moderating effects of teamwork on t...

  20. Stimulation Technologies for Deep Well Completions

    Energy Technology Data Exchange (ETDEWEB)

    None

    2003-09-30

    The Department of Energy (DOE) is sponsoring the Deep Trek Program targeted at improving the economics of drilling and completing deep gas wells. Under the DOE program, Pinnacle Technologies is conducting a study to evaluate the stimulation of deep wells. The objective of the project is to assess U.S. deep well drilling & stimulation activity, review rock mechanics & fracture growth in deep, high pressure/temperature wells and evaluate stimulation technology in several key deep plays. An assessment of historical deep gas well drilling activity and forecast of future trends was completed during the first six months of the project; this segment of the project was covered in Technical Project Report No. 1. The second progress report covers the next six months of the project during which efforts were primarily split between summarizing rock mechanics and fracture growth in deep reservoirs and contacting operators about case studies of deep gas well stimulation.

  1. Bien-être émotionnel au travail et changement organisationnel Emotional Well-Being at Work and Organizational Change: The Essilor Case Bienestar emocional en el trabajo y cambio organizacional : el caso de Essilor

    Directory of Open Access Journals (Sweden)

    Catherine Remoussenard

    2013-05-01

    Full Text Available Aujourd’hui, la plupart des entreprises mettent en place des projets de changements organisationnels afin de s’adapter aux modifications d’un environnement très concurrentiel. Ce faisant, elles se heurtent à des difficultés liées notamment aux situations de mal-être que ces changements peuvent induire. Notre étude vise à explorer les effets de nouvelles politiques managériales sur le bien-être émotionnel des salariés. Plus précisément, nous explorons les politiques mises en œuvre par un des sites du Groupe Essilor dans le contexte d’un changement organisationnel. Nous analysons d’un point de vue quantitatif et qualitatif les effets induits par ces politiques sur les salariés et sur la façon dont Essilor-Dijon en tient compte dans sa gestion des collaborateurs pour améliorer le bien-être au travail. À la lumière de nos résultats, il apparaît que les émotions sont au cœur de la conduite du changement, pouvant jouer le rôle de freins ou de leviers en fonction des choix managériaux.Nowadays, companies are implementing organizational change in order to be able to adapt to an increasingly competitive environment. Because of this context, firms are often confronted with problems linked to stressful situations that they themselves have brought about. We explored the policies which were applied by one of the branches of the Essilor Group in an organizational change context. First, we quantitatively and qualitatively analyzed the effects which this policy has had on stress-related issues. Second, we looked at how Essilor-Dijon took into account these effects in managing its staff so as to improve their well-being at work. Our results show that emotions appear to be at the heart of managing change and can either be obstacles or facilitators, depending on the choices made by management.Hoy en día, la mayoría de las empresas están llevando a cabo proyectos de cambio organizacional con el objetivo de adaptarse a las

  2. Hanford well custodians. Revision 1

    International Nuclear Information System (INIS)

    The Hanford Site Groundwater Protection Management Program recognized the need to integrate monitoring well activities in a centralized manner. A key factor to Hanford Site well integration was the need to clearly identify a responsible party for each of the wells. WHC was asked to identify all wells on site, the program(s) using each well, and the program ultimately responsible for the well. This report lists the custodian and user(s) for each Hanford well and supplies a comprehensive list of all decommissioned and orphaned wells on the Hanford Site. This is the first update to the original report released in December 1993

  3. Automated seismic-to-well ties?

    CERN Document Server

    Herrera, Roberto Henry

    2012-01-01

    The quality of seismic-to-well tie is commonly quantified using the classical Pearson's correlation coefficient. However the seismic wavelet is time-variant, well logging and upscaling is only approximate, and the correlation coefficient does not follow this nonlinear behavior. We introduce the Dynamic Time Warping (DTW) to automate the tying process, accounting for frequency and time variance. The Dynamic Time Warping method can follow the nonlinear behavior better than the commonly used correlation coefficient. Furthermore, the quality of the similarity value does not depend on the selected correlating window. We compare the developed method with the manual seismic-to-well tie in a benchmark case study.

  4. Private Well Water and Fluoride

    Science.gov (United States)

    ... it is the responsibility of the homeowner to know and understand the quality of the water from their well. The U.S. ... or area. Additional information on testing well water quality in private wells ... do I need to know about fluoride and groundwater from a well? Fluoride ...

  5. Third invitational well-testing symposium: well testing in low permeability environments

    International Nuclear Information System (INIS)

    The testing of low permeability rocks is common to waste disposal, fossil energy resource development, underground excavation, and geothermal energy development. This document includes twenty-six papers and abstracts, divided into the following sessions: opening session, case histories and related phenomena, well test design in low permeability formations, analysis and interpretation of well test data, and instrumentation for well tests. Separate abstracts were prepared for 15 of the 16 papers; the remaining paper has been previously abstracted

  6. Third invitational well-testing symposium: well testing in low permeability environments

    Energy Technology Data Exchange (ETDEWEB)

    Doe, T.W.; Schwarz, W.J. (eds.)

    1981-03-01

    The testing of low permeability rocks is common to waste disposal, fossil energy resource development, underground excavation, and geothermal energy development. This document includes twenty-six papers and abstracts, divided into the following sessions: opening session, case histories and related phenomena, well test design in low permeability formations, analysis and interpretation of well test data, and instrumentation for well tests. Separate abstracts were prepared for 15 of the 16 papers; the remaining paper has been previously abstracted. (DLC)

  7. Well data summary sheets. Vol. 33: North sea wells

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-12-31

    This 33rd volume of the `Well Data Summary sheets` includes data from seven recently released offshore wells from the North Sea. The wells Baron-2, S.E. Adda-1 and Skjold Flank-1 were presented in our `Well Data Summary Sheets, special volume`, published May 1, 1997. In volume 33, the wells Baron-2 and Skjold Flank-1 are updated with respect to information on sidewall cores. Information regarding all released well data, included in our well data summary sheets, are available on GEUS homepage: http://www.geus.dk/ or the departments homepage: http://www.geus.dk/departments/geol-info-data-centre/geoldata.htm/. A complete index of releases wells in volumes 17-33 is included. (au)

  8. EcoWellness: The Missing Factor in Holistic Wellness Models

    Science.gov (United States)

    Reese, Ryan F.; Myers, Jane E.

    2012-01-01

    A growing body of multidisciplinary literature has delineated the benefits that natural environments have on physical and mental health. Current wellness models in counseling do not specifically address the impact of nature on wellness or how the natural world can be integrated into counseling. The concept of EcoWellness is presented as the…

  9. Raft River well stimulation experiments: geothermal reservoir well stimulation program

    Energy Technology Data Exchange (ETDEWEB)

    1980-08-01

    The Geothermal Reservoir Well Stimulation Program (GRWSP) performed two field experiments at the Raft River KGRA in 1979. Wells RRGP-4 and RRGP-5 were selected for the hydraulic fracture stimulation treatments. The well selection process, fracture treatment design, field execution, stimulation results, and pre- and post-job evaluations are presented.

  10. Extended-reach wells tap outlying reserves

    Energy Technology Data Exchange (ETDEWEB)

    Nazzal, G. (Eastman Teleco, Houston, TX (United States))

    1993-03-01

    Extended-reach drilling (ERD) is being used to exploit fields and reserves that are located far from existing platforms. Effective wellbore placement from fewer platforms can reduce development costs, maximize production and increase reserve recovery. Six wells drilled offshore in the US, North Sea and Australia illustrate how to get the most economic benefit from available infrastructure. These wells are divided into three categories by depth (shallow, medium and deep). Vertical depth of these wells range from 963 to 12,791 ft TVD and displacements range from 4,871 to 23,917 ft. Important factors for successful extended-reach drilling included: careful, comprehensive pre-planning; adequate cuttings removal in all sections; hole stability in long, exposed intervals; torque and drag modeling of drilling BHAs, casing and liners; buoyancy-assisted casing techniques where appropriate; critical modifications to drilling rig and top drive, for medium and deep ERD; modified power swivels for shallow operations; drill pipe rubbers or other casing protection during extended periods of drill string rotation; heavy-wall casting across anticipated high-wear areas; survey accuracy and frequency; sound drilling practices and creativity to accomplish goals and objectives. This paper reviews the case history of these sites and records planning and design procedures.

  11. Seismic wave generation systems and methods for cased wells

    Science.gov (United States)

    Minto, James; Sorrells, Martin H; Owen, Thomas E.; Schroeder, Edgar C.

    2011-03-29

    A vibration source (10) includes an armature bar (12) having a major length dimension, and a driver (20A) positioned about the armature bar. The driver (20A) is movably coupled to the armature bar (12), and includes an electromagnet (40). During operation the electromagnet (40) is activated such that the driver (20A) moves with respect to the armature bar (12) and a vibratory signal is generated in the armature bar. A described method for generating a vibratory signal in an object includes positioning the vibration source (10) in an opening of the object, coupling the armature bar (12) to a surface of the object within the opening, and activating the electromagnet (40) of the driver (20A) such that the driver moves with respect to the armature bar (12) and a vibratory signal is generated in the armature bar and the object.

  12. Reforming health care : a case for stay well health insurance

    OpenAIRE

    Bogetic, Zeljko; Heffley, Dennis

    1993-01-01

    All countries - whether industrial, developing, or in transition to a market economy - are interested in health care reform. A central focus of reform everywhere is to make patients more responsive to health care costs without diluting the protection offered by public or private insurance. Conventional insurance offers customers little incentive to monitor their own use of health care services or to adopt and maintain better health habits. The authors describe an alternative health insurance ...

  13. WELL CONSTRUCTION AND PURGING EFFECTS ON GROUND-WATER SAMPLES

    Science.gov (United States)

    Multiple well installations of selected casing materials (i.e., polytetrafluoroethylene (PTFE), 304 stainless steel (SS), and polyvinyl chloride (PVC)) were constructed and sampled to determine if well purging and construction procedures would significantly bias chemical constitu...

  14. China's Wellness Revolution

    Institute of Scientific and Technical Information of China (English)

    MarkGodfrey

    2004-01-01

    SEVERAL years after its publication, the Wellness Revolution remains a cult best-selling book. Its writer, businessman and motivational speaker Paul Zane Pilzer, advised investors and ama-teur stock market players that "wellness" would be the next tril-

  15. Nationwide rural well water survey

    International Nuclear Information System (INIS)

    The quality of water in 1 421 drinking-water wells was monitored in a nationwide well water study. Samples were taken once from all wells, and during three seasons from 421 wells. The wells were selected in such a way that me sample would be as representative as possible of the quality of the drinking-water in households' own wells in rural areas. The study comprised general water quality parameters, influence of sampling season, and factors related to the type, the condition and the pollution of the wells. In part of the well waters selenium, radioactivity and pesticides were determined. The effect of plumbing materials on the quality of water was also examined. (33 refs., 148 figs., 71 tabs.)

  16. Promoting Wellness in Lamaze Classes

    OpenAIRE

    Hotelling, Barbara A.

    2005-01-01

    Lamaze childbirth educators are responsible for teaching wellness-based classes that do not add to the anxiety of the current, fear-based culture of maternity health care. Expectant parents' vulnerable months of pregnancy offer “teachable moments” for the childbirth educator, during which parents can be encouraged to alter their lifestyles and adopt the concept of wellness to their principles of living. In this article, concepts of wellness are examined, drawing from the writings of wellness ...

  17. Insomnia and Well-Being

    Science.gov (United States)

    Hamilton, Nancy A.; Gallagher, Matthew W.; Preacher, Kristopher J.; Stevens, Natalie; Nelson, Christy A.; Karlson, Cynthia; McCurdy, Danyale

    2007-01-01

    Most Americans have occasional problems with insomnia. The relationship of insomnia to illness is well known. However, insomnia may also relate to lower levels of well-being. Although there are various definitions of well-being, one of the most clearly articulated and comprehensive models identifies 2 overarching constructs, psychological…

  18. 7 Steps to Aging Well

    Science.gov (United States)

    ... Do: All health care professionals agree that quitting smoking is the best gift you can give yourself and your loved ones. 6. Don't Drink Too Much Why? The consequences of alcohol misuse are serious — in many cases, ...

  19. Developing A Holistic Wellness Model

    Directory of Open Access Journals (Sweden)

    D. A. Els

    2006-11-01

    Full Text Available The objective of the present study was the development of a holistic theoretical wellness model that served as frame of reference for the construction of a valid and reliable inventory that was considered suitable for the assessment of wellness of employees of a South African life insurance organisation. The 5 Factor Wellness Inventory was developed from existing proven wellness inventories. A non-random sample of 673 employees of the organisation concerned participated in a cross-sectional survey by completing the Inventory and a biographical questionnaire. Goodness of fit between the holistic wellness model and a data set derived from the application of the 5 Factor Wellness Inventory was determined empirically. The structural equation modelling statistics produced acceptable goodnessof- fit indices albeit with some scope for improvement. The Root Mean Square Error of Approximation indices supported acceptance of the holistic work-wellness model. The validity of the Inventory was also estimated.

  20. Economic Shocks and Subjective Well-Being

    DEFF Research Database (Denmark)

    Hariri, Jacob Gerner; Bjørnskov, Christian; Justesen, Mogens Kamp

    This paper examines how economic shocks affect individual well-being in developing countries. Using the case of a sudden and unanticipated currency devaluation in Botswana as a quasi-experiment, we examine how this monetary shock affects individuals’ evaluations of well-being. We do so by using...... micro-level survey data, which – incidentally – was collected in the days surrounding the devaluation. The chance occurrence of the devaluation during the time of the survey enables us to use pre-treatment respondents, surveyed before the devaluation, as approximate counterfactuals for post...

  1. The power of integrating consumerism and wellness.

    Science.gov (United States)

    William, C Sharon; Tacker, Linh

    2010-01-01

    One aspect in our troubling economy that seems to be flourishing is the growing number of employers implementing consumer-driven health (CDH) plans and wellness programs. This article describes the primary areas of participant behavior that consumerism seeks to change and the fundamental factors a "consumer-focused" health care strategy must include. The authors outline issues employers must address when designing a successful incentive program and its accompanying communications strategy. A case study of a company that has a 70% enrollment rate in its CDH plans shows how an integrated consumerism and wellness strategy can slow the rate of health care cost increases for both the employee and employer.

  2. Well clogging by particles in Dutch well fields

    NARCIS (Netherlands)

    Timmer, H.; Verdel, J.D.; Jongmans, A.G.

    2003-01-01

    For the water supply company Hydran South Holland in the Netherlands, clogged wells constituted a significant problem that lowered production capacity of the well field, disrupted the purification process at the treatment plant, and decreased overall revenues. This study was undertaken to develop a

  3. Optical orientation in quantum wells

    International Nuclear Information System (INIS)

    In this paper, we review the optical selection rules in semiconductor quantum wells and discuss the degree of electron spin polarization in dependence of the excitation energy and the optical excitation direction. We describe the very fast initial spin relaxation at large excess energies in very thin quantum wells and quantify the dependence on excitation density. As examples for optical studies and the rich spin dynamics in quantum wells, we present the electron spin dynamics in (110)-oriented GaAs quantum wells unveiling the intersubband spin relaxation mechanism and experiments on the complex spin dynamics of coupled electron–hole spins

  4. Water Well Locations - MO 2012 Certified Wells (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This data set provides information about wells that are certified by the State of Missouri. The parent data set is the Wellhead Information Management System (WIMS)...

  5. Community College Employee Wellness Programs

    Science.gov (United States)

    Thornton, L. Jay; Johnson, Sharon

    2010-01-01

    This paper describes the prevalence and characteristics of employee wellness programs in public community colleges accredited by the Southern Association of Colleges and Schools (SACS). A random sample of 250 public community colleges accredited by SACS was mailed a 46-item employee-wellness program survey. The survey solicited program information…

  6. Herbert Wells i russkij avangard

    OpenAIRE

    Burenina, Olga

    2015-01-01

    In article is analyzed influence of novels of Herbert Wells on the Russian Avant-garde, and on concrete examples (Chlebnikov, Majakovskij, Rodchenko, Ekster, Juon) is considered how futurology of novels of Wells are acquired by literature and painting of the Russian Avant-garde.

  7. Groundwater monitoring for deep-well injection

    International Nuclear Information System (INIS)

    A groundwater monitoring system for detecting waste migration would not only enhance confidence in the long-term containment of injected waste, but would also provide early warnings of contamination for prompt responses to protect underground sources of drinking water (USDWs). Field experiences in Florida have demonstrated monitoring water quality and fluid pressure changes in overlying formations is useful in detecting the upward migration of injected waste. Analytical and numerical solutions indicate changes in these two monitoring parameters can vary on the basis of hydrogeologic characteristics, operation conditions, and the distances from the injection well to the monitoring wells and to the preferential hydrologic conduits. To detect waste migration through defects around the wellbore or the leaky containment interval, groundwater monitoring wells should be placed as close as possible to an injection well. In the vertical direction, a monitoring well completed in a permeable interbed within the containment interval is expected to have the highest potential for detecting upward migration. Another acceptable horizon for groundwater monitoring is the lower portion of the buffer brine aquifer immediately above the containment interval. Monitoring wells in USDWs may be needed when waste has been detected in deeper formations or when leakage out of well casings poses a concern. A monitoring well open to the injection interval is of little value in alleviating the concerns of long-term upward migration. Moreover, the installation of the well could create additional preferential pathways. Complications in groundwater monitoring may arise at existing injection sites, especially with prior releases. It is also important to recognize that monitoring in the vicinity of the wellbore may not be effective for detecting waste migration through unidentified unplugged wells or undetected transmissive fractures

  8. Well test analysis for wells producing layered reservoirs with crossflow

    Energy Technology Data Exchange (ETDEWEB)

    Raghavan, R.; Prijambodo, R.; Reynolds, A.C.

    1985-06-01

    The pressure response of a well producing a two-layer reservoir with crossflow is examined. Virtually all studies on the response of a well in multilayered systems with crossflow claim that after a few hours of production these systems behave as if they are single-layer systems. In this study, the authors show that the flowing pressure response of a well at early times can be divided into three flow periods. The first period is one in which the reservoir behaves as if it were a stratified (no-crossflow) system. This period is followed by a transitional period. The response of the well during this period depends on the contrast in horizontal permeabilities and on the degree of communication between the layers. During the third period, the reservoir can be described by an equivalent single-layer system. An examination of the time ranges of the various flow periods indicates that, unless tests are designed properly, most of the interpretable pressure buildup data would be measured during the time the well response is influenced by the transitional period. The influence of the skin regions on the well response is examined. The significance of the estimate of the skin factor obtained from a pressure test is discussed. The authors show that the nature and the magnitude of the skin regions and the size of the reservoir determine the applicability of conventional semilog procedures to systems with interlayer communication.

  9. Ready, set, go . . . well maybe

    Energy Technology Data Exchange (ETDEWEB)

    Alexandre, Melanie M; Bartolome, Terri-Lynn C

    2011-02-28

    The agenda for this presentation is: (1) understand organizational readiness for changes; (2) review benefits and challenges of change; (3) share case studies of ergonomic programs that were 'not ready' and some that were 'ready'; and (4) provide some ideas for facilitating change.

  10. Modeling multiaquifer wells with MODFLOW.

    Science.gov (United States)

    Neville, Christopher J; Tonkin, Matthew J

    2004-01-01

    Multiaquifer wells, i.e., wells that are open across more than one aquifer, can have a profound effect on the hydraulics of a ground water system. These wells change the physical system by establishing direct hydraulic links between otherwise isolated strata. Several methods are available to simulate multiaquifer wells in the context of comprehensive ground water flow simulators. In this paper, we review four methods to represent multiaquifer wells with the widely used code MODFLOW. These methods include a specialized code developed, but never formally released, by the U.S. Geological Survey (USGS), the Multi-Aquifer Well (MAW1) Package. An expanded implementation of the techniques in the MAW1 Package has been incorporated in the Multi-Node Well Package released recently by the USGS (Halford and Hanson 2002). We examine the performance of the methods in the context of a benchmarking study against the analytical solutions of Papadopulos (1966) and Sokol (1963). Our results demonstrate that results obtained with the MAW1 Package closely match exact solutions for pumping and nonpumping conditions, using both coarse and refined grids.

  11. THE PRODUCTIVITY OF WELL PATTERN WITH HORIZONTAL WELLS AND VERTICAL WELLS

    Institute of Scientific and Technical Information of China (English)

    Zhao Chun-sen; Cui Hai-qing; Song Wen-ling; Zhang Zhen

    2003-01-01

    The calculation of productivity and the choice of well pattern of mixed horizontal and vertical wells were discussed in this paper. Because the naturall drainage areas of horizontal wells are oval rather than circular, rectangular drainage well patterns should be adopted. Using pseudo 3-dimensional method and conformal transformation, the potential function of a row of horizontal wells was deduced. Using this function and the superposition principle, an analytical solution of the productivity for the rectangular mixed well pattern was given. Quantitative means for defining the shapes of the optimum pattern were developed in this paper by introducing two dimensionless parameters, the shape factor and dimensionless length of horizontal well. The formula for productvity was used to optimize the mixed well patterns. The curves of the optimized shape factor against dimensionless length of horizontal well were drawn. The results show that the pattern area and formation thickness have no effect on the optimal shape factors and can be applied to the design of development for oil fields.

  12. Geothermal well drilling manual at Cerro Prieto

    Energy Technology Data Exchange (ETDEWEB)

    Fernandez P., A.; Flores S., M.

    1982-08-10

    The objective of the drilling manual is to solve all problems directly related to drilling during the construction of a well. In this case, the topics dealt which are drilling fluids and hydraulics to be applied in the field to improve drilling progress, eliminate risks and achieve good well-completion. There are other topics that are applicable such as drill bits and the drilling string, which are closely linked to drilling progress. On this occasion drilling fluid and hydraulics programs are presented, in addition to a computing program for a Casio FX-502P calculator to be applied in the field to optimize hydraulics and in the analysis of hydraulics for development and exploration wells at their different intervals.

  13. WELL TESTING (YOUQIJING CESHI)

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    Research of Theory & Method. Study on Analysis Method of the Continuous Monitoring Data of Low-Permeability Reservoir. 2012,21 ( 1 ).1 - 3 Lin Jia' en ( Xi' an Petroleum University), Wang Qian ( Yanchang Oilfield Co., Ltd. ) Based on analysis methods of the existed Fetkovieh and Blasingame production data, the non-Dare}, flow model of the circular bound- ary homogeneous reservoirs with vertical wells radial shed is built, and the typical curves of the Fetkovich and Blasingame in case of non-Dare}, flow are drawn. This analysis method of the continuous produetion data through the continuous monitoring production data of unclosing well can get the same interpretation results of reservoir from the we1 testing analysis of conventional closing well, which solves the applied problems of data analysis for a long time of continuous monitoring in low-permeability reservoir.

  14. Well test analysis for Devonian-shale wells. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Serra, K.; Chen, C.C.; Yeh, N.S.; Ohaeri, C.; Reynolds, A.C.; Raghavan, R.

    1981-09-30

    This work presents broad interpretive rules for analyzing Devonian Shale Wells based on simulated drawdown and buildup tests. The report consists of four parts: (1) New Pressure Transient Analysis Methods for Naturally Fractured Reservoirs, (2) Pressure Transient Analysis Methods for Bounded Naturally Fractured Reservoirs, (3) Pressure Response at Observation Wells in Fractured Reservoirs, and (4) Unsteady Flow to a Well Produced at a Constant Pressure in a Fractured Reservoir. Each of these sections is an independent unit; that is, knowledge of the other sections, even though desirable, is not necessary to understand the material in a given section. The principal contribution of this work is the identification of a new flow regime during the early transient period. The discovery of this flow regime represents a major advance in our ability to analyze pressure transient tests. The identification of the new flow regime also explains the response of wells in fractured reservoirs that until now have been considered anomalous. Systematic procedures to analyze single well (drawdown and buildup) tests and multiwell (interference) tests are discussed.

  15. Wellness strategies for smaller businesses.

    Science.gov (United States)

    Neely, Marc

    2012-01-01

    While innovative smaller companies are implementing employee wellness programs, many smaller firms may point to a lack of resources, such as staffing and financial resources, to establish and sustain a wellness program. The uncertain economy and rising health care costs have caused many smaller businesses to focus on core business strategies to keep the doors open and the business going. However, innovative companies realize that building a culture of health is a long-term business strategy directly related to improving the bottom line. This article highlights one company's approach to wellness and the results of the company's programs. It also outlines the components of a successful wellness program and suggests practical implementation steps for smaller businesses.

  16. Magnetic well for plasma confinement

    International Nuclear Information System (INIS)

    A multipole magnetic well for plasma confinement includes a plurality of current-carrying coils placed on planes corresponding to the facets of a regular polyhedron that can be symmetrically circumscribed about a sphere. The direction of current in the coils is such as to minimize the flux density at the center of the polyhedron, thereby providing a confinement well with three-dimensional symmetry having an increasing flux density in all directions from the center. 16 claims, 18 figures

  17. Workover strategies in CHOPS wells

    Energy Technology Data Exchange (ETDEWEB)

    Dusseault, M. [University of Waterloo, Waterloo, ON (Canada); Hayes, K. [Kirby Hayes Incorporated, Calgary, AB (Canada); Kremer, M. [Husky Energy Inc., Calgary, AB (Canada); Wallin, C. [Enerplus Inc., Calgary, AB (Canada)

    2004-09-01

    The basic operational goal in the petroleum industry is to produce maximum oil with minimum expense over an optimal time to maximize netback. During the decade of the 1990s the heavy oil industry in the Lloydminster area reduced operating expenses from $12/bbl to $7.00/bbl largely through conversion to progressive cavity pumps, several micro-engineering advances in handling and disposing of sand, in developing better workovers and methods, and in refining details of well design. Currently, over 600,000 bbl/day of heavy oil are produced in Canada using the CHOPS (cold heavy oil production with sand) technology. CHOPS requires sand flux; without sand, oil rates drop to uneconomic levels in viscous oil wells. Conversely, encouraging sand influx and dealing with it appropriately, can result in substantial increases in oil rates. This article reviews the causes of reduced well production (mechanical, well blockage, near-field and far-field root causes) and the types of workovers that are most appropriate for use, depending upon the cause. A staged-approach to well workover to minimize risk is also explained. A cost-benefit formula is also recommended, i.e. a workover is considered to have been successful if it pays for its costs plus reduces operating expenses in the 90-day period after the well is returned to production.

  18. All's Well That Ends Well: Shakespeare's treatment of anal fistula.

    Science.gov (United States)

    Cosman, B C

    1998-07-01

    Textual and contextual evidence suggests that the French king's fistula, a central plot device in Shakespeare's play All's Well That Ends Well, is a fistula-in-ano. Anal fistula was known to the lay public in Shakespeare's time. In addition, Shakespeare may have known of the anal fistula treatise of John Arderne, an ancestor on Shakespeare's mother's side. Shakespeare's use of anal fistula differs from all previous versions of the story, which first appeared in Boccaccio's Decameron and from its possible historical antecedent, the fistula of Charles V of France. This difference makes sense given the conventions of Elizabethan comedy, which included anal humor. It is also understandable when one looks at what wounds in different locations mean in European legend. In this light, it is not surprising that subsequent expurgations treat Boccaccio's and Shakespeare's fistulas differently, censoring only Shakespeare's. This reading has implications for the staging of All's Well That Ends Well, and for our view of the place of anal fistulas in cultural history.

  19. Ultrasonic Evaluation of Well Integrity

    OpenAIRE

    Hoel, Kristian

    2014-01-01

    This thesis presents the acoustic theory behind current ultrasonic cement evaluation tools. The UltraSonic Imager tool's pulse echo technique and the new Isolation Scanner tool's pitch-catch leaky lamb wave measuring technique is explained. A laboratory experiment is conducted on a steel casing set-up (BeCaLoS) designed by SINTEF Petroleum Research to test, and highlight weaknesses of these measuring techniques. Both evaluation methods are successfully performed under four differen...

  20. Quantum-Well Thermophotovoltaic Cells

    Science.gov (United States)

    Freudlich, Alex; Ignatiev, Alex

    2009-01-01

    Thermophotovoltaic cells containing multiple quantum wells have been invented as improved means of conversion of thermal to electrical energy. The semiconductor bandgaps of the quantum wells can be tailored to be narrower than those of prior thermophotovoltaic cells, thereby enabling the cells to convert energy from longer-wavelength photons that dominate the infrared-rich spectra of typical thermal sources with which these cells would be used. Moreover, in comparison with a conventional single-junction thermophotovoltaic cell, a cell containing multiple narrow-bandgap quantum wells according to the invention can convert energy from a wider range of wavelengths. Hence, the invention increases the achievable thermal-to-electrical energy-conversion efficiency. These thermophotovoltaic cells are expected to be especially useful for extracting electrical energy from combustion, waste-heat, and nuclear sources having temperatures in the approximate range from 1,000 to 1,500 C.

  1. PRODUCTIVITY OF FRACTURED HORIZONTAL WELLS

    Directory of Open Access Journals (Sweden)

    Stjepan Antolović

    2009-12-01

    Full Text Available The interest and performance of horizontal drilling and completions has increased during the last two decades. Horizontal wells are advantageous compared to vertical wells in thin reservoirs, reservoirs with favorable vertical permeability and reservoirs with water and gas coning problems. In many reservoirs, the ratio of horizontal permeability to the vertical permeability is substantially larger than one and often is close to 10. Thus, these reservoirs are very good candidates for hydraulic fracturing. By hydraulic fracturing one or more fractures are created, which can be longitudinal or orthogonal. By that, flow is altered and it mostly conducts horizontally through reservoir toward horizontal wellbore. With this altered flow, fluid is produced faster, with less pressure loss by fluid unit of produced fluid. Some of the existing mathematical models to determine the productivity of multifractured horizontal wells are presented in this work (the paper is published in Croatian.

  2. Radionuclide sorption on well construction materials

    International Nuclear Information System (INIS)

    Laboratory experiments were conducted to measure the extent to which trace concentrations of radioactive materials would sorb on well construction materials and to assess the rapidity with which sorption would occur. The radionuclides employed in these studies were tritium, Cs-137, and Co-57. Solutions with trace concentrations of these radionuclides were contacted with casings of PVC, fiber-glass-epoxy, stainless steel, carbon steel, and steel rods coated with epoxy. The PVC showed no interaction with the tritium or Cs-137 during contact times of two hours to three weeks; however, it did sorb Co-57. The fiber-glass-epoxy also interacted only with the cobalt. The stainless steel sorbed cesium and cobalt. The epoxy-coated steel rods did not interact measurably with any of the radionuclides so long as the coating was intact. The sorption reactions generally were apparent after a few days of contact; in the case of carbon steel, they were detectable in a few hours

  3. Well drilling summary report for well 199-N-106A

    International Nuclear Information System (INIS)

    Past liquid waste disposal practices within the 100-N Area have resulted in the contamination of the underlying sediments and groundwater. The release of large volumes of liquid effluent to the 1301-N and 1325-N Liquid Waste Disposal Facilities caused the transport of 90Sr and other contaminants to the groundwater. Further discussion of 100-N Area hydrogeology is provided in Hartman and Lindsey (1993). A pump-and-treat system combined with a vertical barrier is the preferred alternative for the N Springs Expedited Response Action. This document is a compilation of the data collected during the drilling of well 199-N-106A, an extraction well for the 100-N Pump-and-Treat Project

  4. Well test analysis for wells producing layered reservoirs with crossflow

    Energy Technology Data Exchange (ETDEWEB)

    Prijambodo, R.; Raghavan, R.; Reynolds, A.C.

    1981-01-01

    The pressure response of a well producing a two-layer reservoir with crossflow is examined. It is shown that the flowing pressure response of a well at early times can be divided into three flow periods. The first period is one in which the reservoir behaves as if it were a stratified system (no-crossflow). This period is followed by a transitional period. During the third period, the reservoir can be described by an equivalent single-layer system. The influence of the skin regions is presented. The significance of the estimate of the skin factor obtained from a pressure test is discussed. It is shown that the nature and magnitude of the skin regions and the size of the reservoir determine the applicability of procedures that are based on single-layer systems. 17 refs.

  5. Environmental restoration using horizontal wells

    International Nuclear Information System (INIS)

    This paper reports that under sponsorship from the U.S. Department of Energy, technical personnel from the Savannah River Laboratory and other DOE laboratories, universities and private industry have completed a full scale demonstration of environmental remediation using horizontal wells. The test successfully removed approximately 7250 kg of contaminants. A large amount of characterization and monitoring data was collected to aid in interpretation of the test and to provide the information needed for future environmental restorations that employ directionally drilled wells as extraction or delivery systems

  6. Health and Wellness Policy Ethics

    Directory of Open Access Journals (Sweden)

    Frank J. Cavico

    2013-01-01

    Full Text Available This perspective is an ethical brief overview and examination of “wellness” policies in the modern workplace using practical examples and a general application of utilitarianism. Many employers are implementing policies that provide incentives to employees who lead a “healthy” lifestyle. The authors address how these policies could adversely affect “non-healthy” employees. There are a wide variety of ethical issues that impact wellness policies and practices in the workplace. The authors conclude that wellness programs can be ethical, while also providing a general reflective analysis of healthcare challenges in order to reflect on the externalities associated with such policies in the workplace.

  7. Well test analysis in fractured media

    Energy Technology Data Exchange (ETDEWEB)

    Karasaki, K.

    1986-04-01

    In this study the behavior of fracture systems under well test conditions and methods for analyzing well test data from fractured media are investigated. Several analytical models are developed to be used for analyzing well test data from fractured media. Numerical tools that may be used to simulate fluid flow in fractured media are also presented. Three types of composite models for constant flux tests are investigated. Several slug test models with different geometric conditions that may be present in fractured media are also investigated. A finite element model that can simulate transient fluid flow in fracture networks is used to study the behavior of various two-dimensional fracture systems under well test conditions. A mesh generator that can be used to model mass and heat flow in a fractured-porous media is presented. This model develops an explicit solution in the porous matrix as well as in the discrete fractures. Because the model does not require the assumptions of the conventional double porosity approach, it may be used to simulate cases where double porosity models fail.

  8. On the Importance of Well-Being

    DEFF Research Database (Denmark)

    Rodogno, Raffaele

    2008-01-01

    . This charge can be found in the recent work of both Joseph Raz and Thomas Scanlon. According to the latter the concept of well-being plays an unimportant role in an agent’s deliberation. As I will show, to claim this much is to undermine our initial claim; and to do that is to undermine some of the most......Many among philosophers and non-philosophers would claim that well-being is important in moral theory because it is important to the individual whose well-being it is. The exact meaning of this claim, however, is in need of clarification. Having provided that, I will present a charge against it...... central theories in normative ethics. I will focus on Scanlon’s discussion in particular because it affords us with two criteria for the assessment of the importance for a person of a value-concept such as well-being. I will claim that much of Scanlon’s case rests on the idea that well-being...

  9. Diffused quantum well solar cell

    OpenAIRE

    Lee, ASW; Li, EH; Cheng, Y

    1995-01-01

    An alternative multi-bandgap solar cell made of diffused quantum well (DFQW) as the absorber is proposed here. The modeling of the spectral response and energy conversion efficiency of the solar cell will be shown. Significant enhancement in energy conversion efficiency is demonstrated when compared to that of the single bandgap cells.

  10. CCSD Well Logging Engineering Program

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    This paper introduces briefly the tasks and characteristics of China Continent Science Drilling (CCSD) Well Logging Engineering, the logging methods measured with CCSD, the quality control of original logging information, the logging plan of CCSD, the logging engineering management of CCSD,the logging interpretation and the results and reports made with CCSD.

  11. Nozzle Bricks and Well Bricks

    Institute of Scientific and Technical Information of China (English)

    Zhang Xiaohui; Peng Xigao

    2011-01-01

    1 Scope This standard specifies the classification,brand,technical requirements,test methods,inspection rules,marking,packing,transportation,storage,and quality certificate of nozzle bricks and well bricks.This standard is applicable to unfired and fired products.

  12. The Well Siblings of Schizophrenics.

    Science.gov (United States)

    Samuels, Laurel; Chase, Laura

    1979-01-01

    Explores the impact of having a schizophrenic sibling. Subjects functioned at high levels of adjustment. Separated from their families, there followed a period of reinvolvement, including responsibility for the ill sibling. Younger siblings expressed guilt over being well, whereas older siblings expressed guilt over earlier sibling rivalry.…

  13. Household Separation and Child Well-Being.

    OpenAIRE

    Fafchamps, Marcel

    2009-01-01

    The purpose of this Chapter is to help design a research agenda on risk and child well-being that is suitable for the Young Lives project. A large literature exists that documents the effect of various shocks on the material welfare of children. This literature has documented the negative effects that bad rainfall and other low income shocks has on child schooling (e.g. Jacoby and Skoufias 1997, Sawada 1997, Case, Fertig and Paxson 2005), health (e.g. Banerjee, Duflo, Postel-Vinay and Watts 2...

  14. Radon in private drinking water wells.

    Science.gov (United States)

    Otahal, P; Merta, J; Burian, I

    2014-07-01

    At least 10% of inhabitants in the Czech Republic are supplied with water from private sources (private wells, boreholes). With the increasing cost of water, the number of people using their own sources of drinking water will be likely to increase. According to the Decree of the State Office for Nuclear Safety about the Radiation Protection 307/2002 as amended by Decree 499/2005, the guideline limit for the supplied drinking water ('drinking water for public supply') for radon concentration is 50 Bq·l(-1). This guideline does not apply to private sources of drinking water. Radon in water influences human health by ingestion and also by inhalation when radon is released from water during showering and cooking. This paper presents results of measurements of radon concentrations in water from private wells in more than 300 cases. The gross concentration of alpha-emitting radionuclides and the concentrations of radium and uranium were also determined. PMID:24714110

  15. Pressure sensors for petroleum wells

    International Nuclear Information System (INIS)

    A patent is claimed for a pressure sensor to be used in petroleum wells. Measurements can be performed under extreme temperature and pressure conditions. The system consists of a cell, containing an extensometric circuit, placed in a container and in contact with the pressure to be measured. The cell is formed by two sapphire half-shells. Their crystallographic orientation is chosen in order to obtain isotropy of stresses. The sensor is nearly independent from temperature fluctuations

  16. WELLNESS HABITS OF HUNGARIAN YOUTH

    OpenAIRE

    Kozmane Csirmaz, Eva

    2012-01-01

    A health conscious person might contribute to the preservation of her health and to the prevention of illnesses by her lifestyle, health conscious nutrition and regular exercise. Wellness helps to reach these goals with its complex services aimed at both the improvement of one’s physical state, stamina and maintenance of mental agility. The intention to develop a health conscious lifestyle is perceptible in the ever increasing demand.

  17. Why Mathematics Works So Well

    OpenAIRE

    Yanofsky, Noson S.

    2015-01-01

    A major question in philosophy of science involves the unreasonable effectiveness of mathematics in physics. Why should mathematics, created or discovered, with nothing empirical in mind be so perfectly suited to describe the laws of the physical universe? We review the well-known fact that the symmetries of the laws of physics are their defining properties. We show that there are similar symmetries of mathematical facts and that these symmetries are the defining properties of mathematics. By...

  18. Health and Wellness Policy Ethics

    OpenAIRE

    Frank J. Cavico; Bahaudin G. Mujtaba

    2013-01-01

    This perspective is an ethical brief overview and examination of “wellness” policies in the modern workplace using practical examples and a general application of utilitarianism. Many employers are implementing policies that provide incentives to employees who lead a “healthy” lifestyle. The authors address how these policies could adversely affect “non-healthy” employees. There are a wide variety of ethical issues that impact wellness policies and practices in the workplace. The authors conc...

  19. Kramers Turnover Theory for a Triple Well Potential

    International Nuclear Information System (INIS)

    Kramers turnover theory is solved for a particle in a symmetric triple well potential for temperatures above the crossover temperature between tunneling and activated barrier crossing. Comparison with the turnover theory for a double well potential shows that the presence of the intermediate well always leads to a decrease of the reaction rate. At most though, the rate is a factor of two smaller than in the case of a double well potential. (author)

  20. Concentric coiled tubing application for sand cleanout in horizontal wells

    Energy Technology Data Exchange (ETDEWEB)

    Falk, K.; Fraser, B. [Nowsco Well Services Ltd., Calgary, AB (Canada)

    1998-10-01

    Concentric tubing technology which has opened up a new area of well service capabilities is discussed. One of these techniques involves incorporating concentric tubing equipment with a patented jet pump tool (Sand-Vac{sup S}M) for the purpose of cleaning well sand out of low pressure horizontal wells. Various issues relating to well cleanout using this technology are described, with brief summaries of five case histories. 5 refs., 6 figs.

  1. Quantum Wells in Photovoltaic Cells

    CERN Document Server

    Rohr, C; Ballard, I M; Bushnell, D B; Connolly, J P; Daukes, N J Ekins-; Barnham, K W J

    2016-01-01

    The fundamental efficiency limit of a single bandgap solar cell is about 31% at one sun with a bandgap of about Eg = 1.35 eV (1), determined by the trade-off of maximising current with a smaller bandgap and voltage with a larger bandgap. Multiple bandgaps can be introduced to absorb the broad solar spectrum more efficiently. This can be realised in multi- junction cells, for example, where two or more cells are stacked on top of each other either mechanically or monolithically connected by a tunnel junction. An alternative or complementary (see section 1.4) approach is the quantum well cell (QWC).

  2. Why Mathematics Works So Well

    CERN Document Server

    Yanofsky, Noson S

    2015-01-01

    A major question in philosophy of science involves the unreasonable effectiveness of mathematics in physics. Why should mathematics, created or discovered, with nothing empirical in mind be so perfectly suited to describe the laws of the physical universe? We review the well-known fact that the symmetries of the laws of physics are their defining properties. We show that there are similar symmetries of mathematical facts and that these symmetries are the defining properties of mathematics. By examining the symmetries of physics and mathematics, we show that the effectiveness is actually quite reasonable. In essence, we show that the regularities of physics are a subset of the regularities of mathematics.

  3. Excitons in asymmetric quantum wells

    Science.gov (United States)

    Grigoryev, P. S.; Kurdyubov, A. S.; Kuznetsova, M. S.; Ignatiev, I. V.; Efimov, Yu. P.; Eliseev, S. A.; Petrov, V. V.; Lovtcius, V. A.; Shapochkin, P. Yu.

    2016-09-01

    Resonance dielectric response of excitons is studied for the high-quality InGaAs/GaAs heterostructures with wide asymmetric quantum wells (QWs). To highlight effects of the QW asymmetry, we have grown and studied several heterostructures with nominally square QWs as well as with triangle-like QWs. Several quantum confined exciton states are experimentally observed as narrow exciton resonances. A standard approach for the phenomenological analysis of the profiles is generalized by introducing different phase shifts for the light waves reflected from the QWs at different exciton resonances. Good agreement of the phenomenological fit to the experimentally observed exciton spectra for high-quality structures allowed us to reliably obtain parameters of the exciton resonances: the exciton transition energies, the radiative broadenings, and the phase shifts. A direct numerical solution of the Schrödinger equation for the heavy-hole excitons in asymmetric QWs is used for microscopic modeling of the exciton resonances. Remarkable agreement with the experiment is achieved when the effect of indium segregation is taken into account. The segregation results in a modification of the potential profile, in particular, in an asymmetry of the nominally square QWs.

  4. Case Study: Writing a Journal Case Study

    Science.gov (United States)

    Prud'homme-Genereux, Annie

    2016-01-01

    This column provides original articles on innovations in case study teaching, assessment of the method, as well as case studies with teaching notes. This month's issue describes incorporating a journal article into the classroom by first converting it into a case study.

  5. Real-time well condition monitoring in extended reach wells

    Energy Technology Data Exchange (ETDEWEB)

    Kucs, R.; Spoerker, H.F. [OMV Austria Exploration and Production GmbH, Gaenserndorf (Austria); Thonhauser, G. [Montanuniversitaet Leoben (Austria)

    2008-10-23

    Ever rising daily operating cost for offshore operations make the risk of running into drilling problems due to torque and drag developments in extended reach applications a growing concern. One option to reduce cost related to torque and drag problems can be to monitor torque and drag trends in real time without additional workload on the platform drilling team. To evaluate observed torque or drag trends it is necessary to automatically recognize operations and to have a 'standard value' to compare the measurements to. The presented systematic approach features both options - fully automated operations recognition and real time analysis. Trends can be discussed between rig- and shore-based teams, and decisions can be based on up to date information. Since the system is focused on visualization of real-time torque and drag trends, instead of highly complex and repeated simulations, calculation time is reduced by comparing the real-time rig data against predictions imported from a commercial drilling engineering application. The system allows reacting to emerging stuck pipe situations or developing cuttings beds long before the situations become severe enough to result in substantial lost time. The ability to compare real-time data with historical data from the same or other wells makes the system a valuable tool in supporting a learning organization. The system has been developed in a joint research initiative for field application on the development of an offshore heavy oil field in New Zealand. (orig.)

  6. Silicon Germanium Quantum Well Thermoelectrics

    Science.gov (United States)

    Davidson, Anthony Lee, III

    Today's growing energy demands require new technologies to provide high efficiency clean energy. Thermoelectrics that convert heat to electrical energy directly can provide a method for the automobile industry to recover waste heat to power vehicle electronics, hence improving fuel economy. If large enough efficiencies can be obtained then the internal combustion engine could even be replaced. Exhaust temperature for automotive application range from 400 to 800 K. In this temperature range the current state of the art materials are bulk Si1-xGex alloys. By alternating layers of Si and Si1-xGex alloy device performance may be enhanced through quantum well effects and variations in material thermal properties. In this study, superlattices designed for in-plane operation with varying period and crystallinity are examined to determine the effect on electrical and thermal properties. In-plane electrical resistivity of these materials was found to be below the bulk material at a similar doping at room temperature, confirming the role of quantum wells in electron transport. As period is reduced in the structures boundary scattering limits electron propagation leading to increased resistivity. The Seebeck coefficient measured at room temperature is higher than the bulk material, additionally lending proof to the effects of quantum wells. When examining cross-plane operation the low doping in the Si layers of the device produce high resistivity resulting from boundary scattering. Thermal conductivity was measured from 77 K up to 674 K and shows little variation due to periodicity and temperature, however an order of magnitude reduction over bulk Si1-xGex is shown in all samples. A model is developed that suggests a combination of phonon dispersion effects and strong boundary scattering. Further study of the phonon dispersion effects was achieved through the examination of the heat capacity by combining thermal diffusivity with thermal conductivity. All superlattices show a

  7. Ultra Thin Quantum Well Materials

    Energy Technology Data Exchange (ETDEWEB)

    Dr Saeid Ghamaty

    2012-08-16

    This project has enabled Hi-Z technology Inc. (Hi-Z) to understand how to improve the thermoelectric properties of Si/SiGe Quantum Well Thermoelectric Materials. The research that was completed under this project has enabled Hi-Z Technology, Inc. (Hi-Z) to satisfy the project goal to understand how to improve thermoelectric conversion efficiency and reduce costs by fabricating ultra thin Si/SiGe quantum well (QW) materials and measuring their properties. In addition, Hi-Z gained critical new understanding on how thin film fabrication increases the silicon substrate's electrical conductivity, which is important new knowledge to develop critical material fabrication parameters. QW materials are constructed with alternate layers of an electrical conductor, SiGe and an electrical insulator, Si. Film thicknesses were varied, ranging from 2nm to 10nm where 10 nm was the original film thickness prior to this work. The optimum performance was determined at a Si and SiGe thickness of 4nm for an electrical current and heat flow parallel to the films, which was an important conclusion of this work. Essential new information was obtained on how the Si substrate electrical conductivity increases by up to an order of magnitude upon deposition of QW films. Test measurements and calculations are accurate and include both the quantum well and the substrate. The large increase in substrate electrical conductivity means that a larger portion of the electrical current passes through the substrate. The silicon substrate's increased electrical conductivity is due to inherent impurities and thermal donors which are activated during both molecular beam epitaxy and sputtering deposition of QW materials. Hi-Z's forward looking cost estimations based on future high performance QW modules, in which the best Seebeck coefficient and electrical resistivity are taken from separate samples predict that the electricity cost produced with a QW module could be achieved at <$0.35/W

  8. Biomedical wellness challenges and opportunities

    Science.gov (United States)

    Tangney, John F.

    2012-06-01

    The mission of ONR's Human and Bioengineered Systems Division is to direct, plan, foster, and encourage Science and Technology in cognitive science, computational neuroscience, bioscience and bio-mimetic technology, social/organizational science, training, human factors, and decision making as related to future Naval needs. This paper highlights current programs that contribute to future biomedical wellness needs in context of humanitarian assistance and disaster relief. ONR supports fundamental research and related technology demonstrations in several related areas, including biometrics and human activity recognition; cognitive sciences; computational neurosciences and bio-robotics; human factors, organizational design and decision research; social, cultural and behavioral modeling; and training, education and human performance. In context of a possible future with automated casualty evacuation, elements of current science and technology programs are illustrated.

  9. CASING DRILLING TECHNOLOGY

    Directory of Open Access Journals (Sweden)

    Nediljka Gaurina-Međimurec

    2005-12-01

    Full Text Available Casing drilling is an alternative option to conventional drilling and uses standard oilfield casing instead of drillstring. This technology is one of the greatest developments in drilling operations. Casing drilling involves drilling and casing a well simultaneously. In casing driling process, downhole tools can be retrieved, through the casing on wire-line, meaning tool recovery or replacement of tools can take minutes versus hours under conventional methods. This process employs wireline-retrievable tools and a drill-lock assembly, permitting bit and BHA changes, coring, electrical logging and even directional or horizontal drilling. Once the casing point is reached, the casing is cemented in place without tripping pipe.

  10. Project management case studies

    CERN Document Server

    Kerzner, Harold R

    2013-01-01

    A new edition of the most popular book of project management case studies, expanded to include more than 100 cases plus a ""super case"" on the Iridium Project Case studies are an important part of project management education and training. This Fourth Edition of Harold Kerzner''s Project Management Case Studies features a number of new cases covering value measurement in project management. Also included is the well-received ""super case,"" which covers all aspects of project management and may be used as a capstone for a course. This new edition:Contains 100-plus case studies drawn from re

  11. Linking individual and organizational wellness.

    Science.gov (United States)

    Canosa, J F; Lewandowski, L M

    1993-09-01

    In addition to intervening when workers have substance abuse or stress problems, many hospital employee assistance programs (EAPs) now include a wellness component that emphasizes prevention and organizational wholeness. The EAP at St. Joseph's Hospital & Medical Center, Paterson, NJ, has taken a number of steps to improve its responsiveness to employees' needs and promote constructive organizational changes. To meet increasing requests for mental health services, St. Joseph's EAP implemented a short-term (up to 12 sessions) counseling program that focuses on problem-solving techniques. The EAP has also used feedback from clients to address organizational issues. For example, a survey that revealed differences between managers' and employees' perceptions of managers' leadership skills has led St. Joseph's to consider development of further workshops to train managers on how to be more effective leaders. And in response to complaints from nurses about a lack of communication with physicians, St. Joseph's invested $8,000 to implement nursing support groups and seminars to enhance nurse-physician collaboration. Additional EAP activities include consulting services for other corporations and help for employees in overcoming financial barriers to access to healthcare and social services. As budgets tighten, effective marketing of EAPs will be essential to their continued growth. In particular, EAP administrators must learn how to document the strategic and financial benefits of their programs.

  12. Quantum well infrared photodetector FPA

    Science.gov (United States)

    Kozlowski, L.

    1994-03-01

    The AT&T/Rockwell team met all the objectives of this collaborative program; AT&T supplied the QWIP detector arrays and Rockwell subsequently fabricated hybrid focal plane arrays using available high performance CMOS multiplexers, tested the hybrids, performed breadboard imaging demonstrations and delivered several hybrid FPA's. Eighteen hybrids were fabricated and evaluated. The collaboration yielded significant improvements in QWIP FPA performance and reliability and many milestones including: first BLIP LWIR FPA sensitivity demonstration at low photon backgrounds (less than 1 x 10(exp 12) photons/sq cm-sec) with the GaAs-based quantum well infrared photodetector (QWIP) technology, high LWIR FPA pixel operability; NE Delta T's as low as 5 mK at LWIR imaging backgrounds at f/1.4 and temperatures consistent with mechanical coolers (approx. 65K), increased coupling efficiency by over an order of magnitude; achieved effective quantum efficiency of approx. 10% with low crosstalk; effective quantum efficiencies of up to 30% under flood illumination, though with high crosstalk; mean D* of 1 x10(exp 14) cm-Hz(exp 1/2)/W at 3.0 x 10(exp 9) photons/sq cm-sec background at 32.5K operating temperature with greater than 98% operability; maximum temperature for 9.5 microns m FPA BLIP sensitivity as high as 62K; excellent hybrid reliability by mechanically thinning the QWIP; and responsivity nonuniformity less than 3% rms, thus enabling greater than 83 dB dynamic range.

  13. Terahertz Semiconductor Quantum Well Devices

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    For eventually providing terahertz science with compact and convenient devices,terahertz (1~10THz) quantum-well photodetectors and quantum-cascade lasers are investigated. The design and projected detector performance are presented together with experimental results for several test devices,all working at photon energies below and around optical phonons. Background limited infrared performance (BLIP) operations are observed for all samples (three in total) ,designed for different wavelengths. BLIP temperatures of 17,13, and 12K are achieved for peak detection frequencies of 9.7THz(31μm) ,5.4THz(56μm) ,and 3.2THz(93μm) ,respectively. A set of THz quantum-cascade lasers with identical device parameters except for doping concentration is studied. The δ-doping density for each period varies from 3.2 × 1010 to 4. 8 × 1010cm-2. We observe that the lasing threshold current density increases monotonically with doping concentration. Moreover, the measurements for devices with different cavity lengths provide evidence that the free carrier absorption causes the waveguide loss also to increase monotonically. Interestingly the observed maximum lasing temperature is best at a doping density of 3.6 × 1010cm-2.

  14. Spin photocurrents in quantum wells

    CERN Document Server

    Ganichev, S D

    2003-01-01

    Spin photocurrents generated by homogeneous optical excitation with circularly polarized radiation in quantum wells (QWs) are reviewed. The absorption of circularly polarized light results in optical spin orientation due to the transfer of the angular momentum of photons to electrons of a two-dimensional electron gas. It is shown that in QWs belonging to one of the gyrotropic crystal classes a non-equilibrium spin polarization of uniformly distributed electrons causes a directed motion of electrons in the plane of the QW. A characteristic feature of this electric current, which occurs in unbiased samples, is that it reverses its direction upon changing the radiation helicity from left-handed to right-handed and vice versa. Two microscopic mechanisms are responsible for the occurrence of an electric current linked to a uniform spin polarization in a QW: the spin polarization-induced circular photogalvanic effect and the spin-galvanic effect. In both effects the current flow is driven by an asymmetric distribut...

  15. Linking individual and organizational wellness.

    Science.gov (United States)

    Canosa, J F; Lewandowski, L M

    1993-09-01

    In addition to intervening when workers have substance abuse or stress problems, many hospital employee assistance programs (EAPs) now include a wellness component that emphasizes prevention and organizational wholeness. The EAP at St. Joseph's Hospital & Medical Center, Paterson, NJ, has taken a number of steps to improve its responsiveness to employees' needs and promote constructive organizational changes. To meet increasing requests for mental health services, St. Joseph's EAP implemented a short-term (up to 12 sessions) counseling program that focuses on problem-solving techniques. The EAP has also used feedback from clients to address organizational issues. For example, a survey that revealed differences between managers' and employees' perceptions of managers' leadership skills has led St. Joseph's to consider development of further workshops to train managers on how to be more effective leaders. And in response to complaints from nurses about a lack of communication with physicians, St. Joseph's invested $8,000 to implement nursing support groups and seminars to enhance nurse-physician collaboration. Additional EAP activities include consulting services for other corporations and help for employees in overcoming financial barriers to access to healthcare and social services. As budgets tighten, effective marketing of EAPs will be essential to their continued growth. In particular, EAP administrators must learn how to document the strategic and financial benefits of their programs. PMID:10127981

  16. Care of the well newborn.

    Science.gov (United States)

    Warren, Johanna B; Phillipi, Carrie A

    2012-01-01

    The birth of an infant is one of the most memorable experiences a family shares. Pediatric health care professionals are privileged to participate in this experience and recognize it as a time to promote the health of the newborn and family. Ideally, a well-designed care system would be replete with comprehensive supports during the prenatal period, birth, and transition to home. Opportunities exist to improve the care we deliver with universal screening of all pregnant women; coordinated assessments of family health, including mental health; and access to coordinated supports and services for mother and infant. If 90% of US families could comply with medical recommendations to breastfeed exclusively for 6 months, it is estimated the United States would save billions of dollars per year and prevent more than 900 deaths, nearly all of which would be in infants. All infants, whether breastfed or formula fed, should receive 400 IU supplemental vitamin D. Influenza and TdaP vaccination of postpartum mothers and other caregivers helps cocoon the vulnerable infant from influenza and pertussis until he or she can be fully vaccinated. When children reach the highest weight or length allowed by the manufacturer of their infant-only seat, they should continue to ride rear-facing in a convertible seat. It is best for children to ride rear-facing as long as possible to the highest weight and height allowed by the manufacturer of their convertible seat. PMID:22210929

  17. 基于 LabVIEW 的高压气井环空带压管理系统应用%Research and Application of Management System of Sustained Casing Pressure for High-pressure Gas Well Based on LabVIEW

    Institute of Scientific and Technical Information of China (English)

    冯洁; 解秦保; 翟超; 王贝

    2016-01-01

    The sustained casing pressure (SCP)threatens the safety of gas production and environ-mental health.To effectively solve the problem in high-pressure gas wells,in this paper the causes of SCP was analyzed and then serious of management operation process for high-pressure gas wells was established.In connection with the production status in high pressure gas wells,the pressure transmitters were used and automatic pressure relief lines were added to the annulus connected valves in Christmas trees and then based on LabVIEW,with the DATAQ data acquisi-tion cards and PLC,a management system for SCP was developed to do the pressure relief/recov-ery monitoring and tests for gas leakage.The results show that the system is in high precision, stable and reliable,while also will save the labor costs and improve the management level of high pressure gas wells and risk-control techniques.%气井环空带压会严重威胁天然气的生产安全和环境健康。为有效管理高压气井环空带压问题,分析了高压气井环空带压原因,在此基础之上建立高压气井环空带压管理操作流程。针对高压气井生产动态,在采气树环空连通阀引入压力变送器与自动泄压管线,并基于 LabVIEW 平台,结合 DATAQ 数据采集卡、及 PLC 下位机,开发出高压气井环空压力管理系统。进而进行压力泄放/恢复监测与井口气体泄漏测试。结果表明,该系统测量精度高、运行稳定可靠,同时节省了人工成本,对提高高压气井动态管理水平与风险控制技术有重大意义。

  18. Designing for crowd well-being: needs and design suggestions

    NARCIS (Netherlands)

    Li, J.; De Ridder, H.; Vermeeren, A.P.O.S.; Conrado, C.; Martella, C.

    2013-01-01

    This paper investigates the needs or criteria for sustaining well-being in crowded situations through two focus group discussions with a total of ten participants. We conclude that pursuing crowd well-being could be divided into two different cases: one is obtaining the enhancement of the current st

  19. Systemic lupus erythematosus associated with Wells' syndrome.

    Science.gov (United States)

    Yin, Geng; Xie, Qibing

    2012-04-01

    Wells' syndrome is a multifaceted dermatosis with a wide morphological spectrum, ranging from characteristic cellulitis-like erythema and papula to an unusual presentation of vesicles and pustules. The most important elements for diagnosis are erythemal plaques and histological picture of eosinophilic infiltration of the dermis with 'flame figures' (Plotz et al., in Hautarzt 51:182-186, 2000). Because of its original description as a distinct entity, it has come to be regarded as an abnormal eosinophilic response to a number of causative agents such as herpes simplex virus 2(HSV-2) and toxocara (Ludwig et al., in J Am Acad Dermatol 48:S60-S61, 2003; Bassukas et al., in Cases J 1:356, 2008). Concurrence of WS and malignant diseases as colon cancer, trachea squamous carcinoma, nasopharyngeal carcinoma or angioimmunoblastic lymphadenopathy has been reported (Hirsch et al., in J Dtsch Dermatol Ges 3:530-531, 2005; Renner et al., in Acta Derm Venereol 87:525-528, 2007). Autoimmune diseases, including Systemic lupus erythematosus (SLE) are multi-system disorders of unknown cause and are commonly characterized by protean cutaneous manifestations. To date, few autoimmne disease was found associated with WS except four previous reports of Churg-Strauss syndrome (CSS) and one case of ulcerative colitis (Fujimoto et al., in Clin Exp Dermatol, 2010; Sakaria et al., in J Gastroenterol 42:250-252, 2007). The coexistence of SLE and WS in one patient was not found in literature and our case is the first. Here we described the rare combination and discussed the treatment strategy for this condition.

  20. Systemic lupus erythematosus associated with Wells' syndrome.

    Science.gov (United States)

    Yin, Geng; Xie, Qibing

    2012-04-01

    Wells' syndrome is a multifaceted dermatosis with a wide morphological spectrum, ranging from characteristic cellulitis-like erythema and papula to an unusual presentation of vesicles and pustules. The most important elements for diagnosis are erythemal plaques and histological picture of eosinophilic infiltration of the dermis with 'flame figures' (Plotz et al., in Hautarzt 51:182-186, 2000). Because of its original description as a distinct entity, it has come to be regarded as an abnormal eosinophilic response to a number of causative agents such as herpes simplex virus 2(HSV-2) and toxocara (Ludwig et al., in J Am Acad Dermatol 48:S60-S61, 2003; Bassukas et al., in Cases J 1:356, 2008). Concurrence of WS and malignant diseases as colon cancer, trachea squamous carcinoma, nasopharyngeal carcinoma or angioimmunoblastic lymphadenopathy has been reported (Hirsch et al., in J Dtsch Dermatol Ges 3:530-531, 2005; Renner et al., in Acta Derm Venereol 87:525-528, 2007). Autoimmune diseases, including Systemic lupus erythematosus (SLE) are multi-system disorders of unknown cause and are commonly characterized by protean cutaneous manifestations. To date, few autoimmne disease was found associated with WS except four previous reports of Churg-Strauss syndrome (CSS) and one case of ulcerative colitis (Fujimoto et al., in Clin Exp Dermatol, 2010; Sakaria et al., in J Gastroenterol 42:250-252, 2007). The coexistence of SLE and WS in one patient was not found in literature and our case is the first. Here we described the rare combination and discussed the treatment strategy for this condition. PMID:21340570

  1. Multistability in planar liquid crystal wells

    KAUST Repository

    Luo, Chong

    2012-06-08

    A planar bistable liquid crystal device, reported in Tsakonas, is modeled within the Landau-de Gennes theory for nematic liquid crystals. This planar device consists of an array of square micrometer-sized wells. We obtain six different classes of equilibrium profiles and these profiles are classified as diagonal or rotated solutions. In the strong anchoring case, we propose a Dirichlet boundary condition that mimics the experimentally imposed tangent boundary conditions. In the weak anchoring case, we present a suitable surface energy and study the multiplicity of solutions as a function of the anchoring strength. We find that diagonal solutions exist for all values of the anchoring strength W≥0, while rotated solutions only exist for W≥W c>0, where W c is a critical anchoring strength that has been computed numerically. We propose a dynamic model for the switching mechanisms based on only dielectric effects. For sufficiently strong external electric fields, we numerically demonstrate diagonal-to-rotated and rotated-to-diagonal switching by allowing for variable anchoring strength across the domain boundary. © 2012 American Physical Society.

  2. 中国与SEC储量评估差异分析——以元坝长兴组元坝103H井区长二段气藏为例%Reasons for differences of reserve estimation results between domestic and SEC rules: A case study of gas reservoir in 2nd section of Changxing Formation, well Yuanba 103H

    Institute of Scientific and Technical Information of China (English)

    刘韵; 张贵生; 马丽梅

    2012-01-01

    Three main petroleum companies in our country have successfully come into the SEC in succession since 2000, and the reserve estimations on oversea market have been made based on SEC rules. The differences of reserve estimation concept, classification and purpose lead to the differences of estimation results between domestic and SEC rules. A case study of gas reservoir has been carried out in the 2nd section of the Changxing Formation, well Yuanba 103H. The determination of gas-bearing area and effective thickness based on domestic and SEC rules has been compared.%2000年以来,我国三大石油公司陆续在美国证券交易市场成功上市,上市储量评估采用的技术规范是SEC准则.国内外储量评估内涵、分类和目的有所不同,使国内外评估结果存在差异.该文以元坝103H井区长二段气藏为例,就国内规范和SEC准则在容积法评估储量过程中确定含气面积、有效厚度等参数取值的具体方法逐一对比分析.

  3. Productivity and Injectivity of Horizontal Wells

    Energy Technology Data Exchange (ETDEWEB)

    Khalid Aziz; Sepehr Arababi; Thomas A. Hewett

    1997-04-29

    A general wellbore flow model is presented to incorporate not only frictional, accelerational and gravitational pressure drops, but also the pressure drop caused by inflow. Influence of inflow or outflow on the wellbore pressure drop is analyzed. New friction factor correlations accounting for both inflow and outflow are also developed. The greatest source of uncertainty is reservoir description and how it is used in simulators. Integration of data through geostatistical techniques leads to multiple descriptions that all honor available data. The reality is never known. The only way to reduce this uncertainty is to use more data from geological studies, formation evaluation, high resolution seismic, well tests and production history to constrain stochastic images. Even with a perfect knowledge about reservoir geology, current models cannot do routine simulations at a fine enough scale. Furthermore, we normally don't know what scale is fine enough. Upscaling introduces errors and masks some of the physical phenomenon that we are trying to model. The scale at which upscaling is robust is not known and it is probably smaller in most cases than the scale actually used for predicting performance. Uncertainties in the well index can cause errors in predictions that are of the same magnitude as those caused by reservoir heterogeneities. Simplified semi-analytical models for cresting behavior and productivity predictions can be very misleading.

  4. Ayurvedic research, wellness and consumer rights.

    Science.gov (United States)

    Chandra, Shailaja

    2016-03-01

    The growing interest in using Ayurvedic medicine as a gentler, safer option to using modern medicine drugs with attendant side effects continues to be thwarted because claims about effectiveness and safety are not backed with evidence and clinical data. The focus of Ayurveda practice and research should be on building bridges to this knowledge for public benefit. The consumer is being denied basic knowledge, access to product information as well the benefit of a common prescription written by a single treating physician because of three factors - Ayurvedic OTC medicine is generally sold with names and labels which cannot be understood by the consumer despite being easily available without prescription; the treating modern medicine doctor is being prevented from writing the name of a herbal product even when he is individually convinced about its usefulness (in given circumstances) and the absence of biomedical research using objective parameters proving the effectiveness of the drugs. Contemporary Ayurveda needs to be packaged to reach the modern consumer in a way that he gets the benefit of access to treatment options that assist healing within the ambit of the law. These obstacles have to be removed. Patient- based effectiveness studies using retrospective case material as well as research using interdisciplinary approaches are needed for public benefit. This has to be facilitated.

  5. Leakage behind casing

    OpenAIRE

    Khandka, Rupak Kumar

    2007-01-01

    Achieving zonal isolation by cementing annulus space between casing and well bore is an important job in many oil wells. Gas leakage in the annulus has been recognised as a major completion problem in the oil well. A successful cement job results in complete zonal isolation on a permanent basis. To achieve these goals, various factors such as well security, casing centralization, effective mud removal, and gas migration must be considered in the design. The design of the cement must be such t...

  6. Development of an Improved Cement for Geothermal Wells

    Energy Technology Data Exchange (ETDEWEB)

    Trabits, George [Trabits Group, LLC, Wasilla, AK (United States)

    2015-04-20

    After an oil, gas, or geothermal production well has been drilled, the well must be stabilized with a casing (sections of steel pipe that are joined together) in order to prevent the walls of the well from collapsing. The gap between the casing and the walls of the well is filled with cement, which locks the casing into place. The casing and cementing of geothermal wells is complicated by the harsh conditions of high temperature, high pressure, and a chemical environment (brines with high concentrations of carbon dioxide and sulfuric acid) that degrades conventional Portland cement. During the 1990s and early 2000s, the U.S. Department of Energy’s Geothermal Technologies Office (GTO) provided support for the development of fly-ash-modified calcium aluminate phosphate (CaP) cement, which offers improved resistance to degradation compared with conventional cement. However, the use of CaP cements involves some operational constraints that can increase the cost and complexity of well cementing. In some cases, CaP cements are incompatible with chemical additives that are commonly used to adjust cement setting time. Care must also be taken to ensure that CaP cements do not become contaminated with leftover conventional cement in pumping equipment used in conventional well cementing. With assistance from GTO, Trabits Group, LLC has developed a zeolite-containing cement that performs well in harsh geothermal conditions (thermal stability at temperatures of up to 300°C and resistance to carbonation) and is easy to use (can be easily adjusted with additives and eliminates the need to “sterilize” pumping equipment as with CaP cements). This combination of properties reduces the complexity/cost of well cementing, which will help enable the widespread development of geothermal energy in the United States.

  7. Diagnostic Plots Applied to Well-Tests in Karst Systems

    OpenAIRE

    Maréchal, Jean-Christophe; Ladouche, Bernard; Dewandel, Benoît; Fleury, Perrine; Dörfliger, Nathalie

    2014-01-01

    International audience Pumping tests conducted on wells intersecting karst heterogeneities such as the conduit network are difficult to interpret. Nevertheless, this case can be solved by assimilating the horizontal karst conduit to a finite-conductivity vertical fracture. In this case, several flow patterns corresponding to the respective contributions of karst subsystems (fractured matrix, small conduits and main karst drainage network) can be identified on the diagnostic plot of drawdow...

  8. Geothermal well log interpretation state of the art. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Sanyal, S.K.; Wells, L.E.; Bickham, R.E.

    1980-01-01

    An in-depth study of the state of the art in Geothermal Well Log Interpretation has been made encompassing case histories, technical papers, computerized literature searches, and actual processing of geothermal wells from New Mexico, Idaho, and California. A classification scheme of geothermal reservoir types was defined which distinguishes fluid phase and temperature, lithology, geologic province, pore geometry, salinity, and fluid chemistry. Major deficiencies of Geothermal Well Log Interpretation are defined and discussed with recommendations of possible solutions or research for solutions. The Geothermal Well Log Interpretation study and report has concentrated primarily on Western US reservoirs. Geopressured geothermal reservoirs are not considered.

  9. 2013 strategic petroleum reserve big hill well integrity grading report.

    Energy Technology Data Exchange (ETDEWEB)

    Lord, David L.; Roberts, Barry L.; Lord, Anna C. Snider; Bettin, Giorgia; Sobolik, Steven Ronald; Park, Byoung Yoon; Rudeen, David Keith; Eldredge, Lisa; Wynn, Karen; Checkai, Dean; Perry, James Thomas

    2014-02-01

    This report summarizes the work performed in developing a framework for the prioritization of cavern access wells for remediation and monitoring at the Big Hill Strategic Petroleum Reserve site. This framework was then applied to all 28 wells at the Big Hill site with each well receiving a grade for remediation and monitoring. Numerous factors affecting well integrity were incorporated into the grading framework including casing survey results, cavern pressure history, results from geomechanical simulations, and site geologic factors. The framework was developed in a way as to be applicable to all four of the Strategic Petroleum Reserve sites.

  10. Compaction resistant wellbore for sand-producing wells

    Energy Technology Data Exchange (ETDEWEB)

    Shute, D.M. [Volant Products Inc., Edmonton, AB (Canada); Kaiser, T.M.V. [Noetic Engineering Inc., Edmonton, AB (Canada); Munoz, H. [Husky Oil Operations Ltd., Calgary, AB (Canada)

    2004-07-01

    This paper presents a solution to extend the life of a well in high sand producing fields. The economic value of cold heavy oil production depends on maximizing the rate of oil production and well life. One strategy in heavy oil sands is to produce the sand with the oil to increase the deliverability of the well. However, the cumulative sand volume from the reservoir can be very large, resulting in large vertical deformations relative to the elastic strain limit of the steel and liner through the producing interval. A compaction resistant wellbore (CRW) with better structural capacity was designed to absorb the axial compaction. A review of deformation mechanisms associated with sand production strategies has shown that improved deformation assessment tools and measurement systems can provide accurate casing deformation evaluations. A case study from a high sand-producing field showed that this approach can increase well life. 10 refs., 9 figs.

  11. Geophysical well logging using nuclear techniques

    International Nuclear Information System (INIS)

    Nuclear logging of boreholes is in world-wide use for locating and evaluating commercial deposits of hydrocarbons, coal, uranium and certain other useful minerals. Within the petroleum industry the principal uses of nuclear logs are for correlation between wells, for measuring the porosity of rocks, for identifying hydrocarbons and for determining rock type. The long-spaced, dual detector neutron log is especially used to measure porosity and, in combination with a scattered gamma-ray density log to identify gas. Small-diameter borehole accelerators are used as sources of pulsed 14-MeV neutrons to make routinely neutron die-away logs to distinguish hydrocarbons from salt water in cased holes. New accelerator logs based on spectral gamma-ray measurements are being developed to distinguish hydrocarbons from fresh water and to improve lithology determinations. Natural gamma-ray spectral measurements are used to solve correlation problems and to identify uranium-, thorium- and potassium-rich minerals. In coal exploration natural gamma-ray and scattered gamma-ray density logs are used to locate the coal and, in favourable circumstances, to estimate ash content. For oil shale evaluation the density log has been used in small-diameter holes in Colorado oil shale to determine potential oil yield. A new method of uranium detection based on measurement of delayed fission neutrons produced by bombardment of the formations with 14-MeV neutrons from a pulsed accelerator source has recently been described. (author)

  12. When the world's wells run dry.

    Science.gov (United States)

    Postel, S

    1999-01-01

    Over the past 3 decades, the depletion of underground water reserves (known as aquifers) has spread from isolated pockets of the agricultural landscape to large portions of the world's irrigated land. Groundwater drafting and groundwater exploiting are now rampant in the crop-producing regions all over the world, as is exemplified by the cases of India, the western US, and parts of Pakistan. Globally, it is in agriculture that the greatest social risks lie. Irrigated land is disproportionately important to world food production. Along with groundwater depletion, there is the problem of the build-up of salts in the soil, the silting up of reservoirs and canals, the mounting competition for water between cities and farms and between countries sharing rivers, the rapid population growth in regions that are already water-stressed, and the uncertainties of climate change. Few governments are taking adequate steps to address any of these threats. It is only in recent times that groundwater issues have begun to appear in some countries' national agendas. Although workable plans will vary from place to place, clear policies should be made for sustainable groundwater use because the future of agriculture and of humanity itself will depend on how well water is managed.

  13. Fluid-Rock Characterization and Interactions in NMR Well Logging

    Energy Technology Data Exchange (ETDEWEB)

    Hirasaki, George J.; Mohanty, Kishore K.

    2003-02-10

    The objective of this project was to characterize the fluid properties and fluid-rock interactions which are needed for formation evaluation by NMR well logging. NMR well logging is finding wide use in formation evaluation. The formation parameters commonly estimated were porosity, permeability, and capillary bound water. Special cases include estimation of oil viscosity, residual oil saturation, location of oil/water contact, and interpretation on whether the hydrocarbon is oil or gas.

  14. DESIGN AND MECHANICAL INTEGRITY OF CO2 INJECTION WELLS

    Directory of Open Access Journals (Sweden)

    Nediljka Gaurina-Međimurec

    2011-12-01

    Full Text Available Geologic Sequestration (GS is part of a process known as “carbon capture and storage (CCS” and represents the process of injecting CO2, into deep subsurface rock formations for long-term storage. For injecting of CO2 existing wells are used as well as new drilled wells. A well represents the most likely route for leakage of CO2 from geologic carbon sequestration. Maintaining mechanical integrity helps prevent the well and wellbore from becoming conduits for CO2 migration out of the injection zone. The typical components of a CO2 injection well are casing, tubing, cement, and packer. These components are relevant for maintaining mechanical integrity and ensuring CO2 does not migrate upwards from the injection zone into underground source of drinking water (USDW; therefore helping to ensure zonal isolation of the injected carbon dioxide. In order to have the safe underground storage of CO2 well integrity considerations should be present during all phases of well life including design phase, drilling, completion, injection, workover (service and abandonment. The paper describes well design, well integrity and mechanical integrity tests (MITs as a means of measuring the adequacy of the construction of the injection well and as a way to detect problems within the well system.

  15. Identifying Mutations of the Tetratricopeptide Repeat Domain 37 (TTC37) Gene in Infants With Intractable Diarrhea and a Comparison of Asian and Non-Asian Phenotype and Genotype: A Global Case-report Study of a Well-Defined Syndrome With Immunodeficiency.

    Science.gov (United States)

    Lee, Wen-I; Huang, Jing-Long; Chen, Chien-Chang; Lin, Ju-Li; Wu, Ren-Chin; Jaing, Tang-Her; Ou, Liang-Shiou

    2016-03-01

    Syndromic diarrhea/tricho-hepato-enteric syndrome (SD/THE) is a rare, autosomal recessive and severe bowel disorder mainly caused by mutations in the tetratricopeptide repeat domain 37 (TTC37) gene which act as heterotetrameric cofactors to enhance aberrant mRNAs decay. The phenotype and immune profiles of SD/THE overlap those of primary immunodeficiency diseases (PIDs). Neonates with intractable diarrhea underwent immunologic assessments including immunoglobulin levels, lymphocyte subsets, lymphocyte proliferation, superoxide production, and IL-10 signaling function. Candidate genes for PIDs predisposing to inflammatory bowel disease were sequencing in this study. Two neonates, born to nonconsanguineous parents, suffered from intractable diarrhea, recurrent infections, and massive hematemesis from esopharyngeal varices due to liver cirrhosis or accompanying Trichorrhexis nodosa that developed with age and thus guided the diagnosis of SD/THE compatible to TTC37 mutations (homozygous DelK1155H, Fs*2; heterozygous Y1169Ter and InsA1143, Fs*3). Their immunologic evaluation showed normal mitogen-stimulated lymphocyte proliferation, superoxide production, and IL-10 signaling, but low IgG levels, undetectable antibody to hepatitis B surface antigen and decreased antigen-stimulated lymphocyte proliferation. A PubMed search for bi-allelic TTC37 mutations and phenotypes were recorded in 14 Asian and 12 non-Asian cases. They had similar presentations of infantile onset refractory diarrhea, facial dysmorphism, hair anomalies, low IgG, low birth weight, and consanguinity. A higher incidence of heart anomalies (8/14 vs 2/12; P = 0.0344, Chi-square), nonsense mutations (19 in 28 alleles), and hot-spot mutations (W936Ter, 2779-2G>A, and Y1169Ter) were found in the Asian compared with the non-Asian patients. Despite immunoglobulin therapy in 20 of the patients, 4 died from liver cirrhosis and 1 died from sepsis. Patients of all ethnicities with SD/THE with the characteristic

  16. Sustainable yields from large diameter wells in shallow weathered aquifers

    Science.gov (United States)

    Rushton, K. R.; de Silva, C. S.

    2016-08-01

    Large diameter wells in shallow weathered aquifers provide a valuable source of water for domestic and agricultural purposes in many locations including the Indian subcontinent. However, when used for irrigation, these wells often fail towards the end of the dry season. By considering two case studies in the dry and intermediate rainfall zones of Sri Lanka, reasons for the limited yield of these wells are identified. The first case study is concerned with a sloping catchment; a significant proportion of the precipitation during the rainy season either becomes runoff or passes down-gradient through the aquifer and is discharged at the ground surface. Furthermore, during the dry season, groundwater discharge continues. In the second case study the topography is generally flat but, even though the aquifer fills most years during the rainy season, there is often only sufficient water to irrigate about half of each farmer's holding. These investigations are based on field information and the development of conceptual and computational models. Of critical importance in assessing the long term yield of a well is the formation of a seepage face on the side of the well, with the water table a significant distance above the pumping water level. Consequently the water table may only be lowered to about half the depth of the well. The paper concludes with recommendations for the exploitation of groundwater from shallow weathered aquifers to minimise the risk of failure during the dry season.

  17. Treatment of eosinophilic cellulitis (Wells syndrome) - a systematic review.

    Science.gov (United States)

    Räßler, F; Lukács, J; Elsner, P

    2016-09-01

    Eosinophilic cellulitis (Wells syndrome) is a rare inflammatory skin disease defined by erythematous, tender, sometimes urticarial plaques, possibly with vesicles and bullae, and granulomatous eosinophilic infiltrates in the dermis. Usually the disease has a benign course with spontaneous remission within a few weeks. Nevertheless, recurrences are quite frequent and may occur for several years. The objective of this study was to review the so far reported treatment options for Wells syndrome in a systematic manner. This systematic review is based on a search on Medline, Embase and Cochrane Central Register for English and German articles from 1970 to 2015. Advices on the treatment of Wells syndrome are limited predominately to case reports or to small case series. There are no randomized controlled trials, and control groups are missing. A variety of treatment options for Wells syndrome were reported including topical and systemic corticosteroids, antihistamines, cyclosporine, dapsone, azathioprine, griseofulvin, doxycycline, minocycline, antimalarial medications, oral tacrolimus/topical tacrolimus, sulfasalazine, interferon alpha and gamma, TNF alpha inhibitors, colchicine and PUVA therapy. As well-designed, randomized controlled trials are missing, no guidelines for the treatment of this disease can be given. Due to the small number of patients and the frequent misdiagnosis of this clinical entity, the aim of this systematic overview is to call attention to this rare condition and to help clinicians to diagnose and treat Wells syndrome effectively. Due to the good prognosis and tendency to resolve, systemic treatment should be limited to cases resistant to local therapy or with widespread lesions. PMID:27357601

  18. Methods for Finding Legacy Wells in Large Areas

    Energy Technology Data Exchange (ETDEWEB)

    Hammack, Richard W. [National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States); Veloski, Garret A. [National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States); Hodges, D. Greg [Fugro Airborne Surveys, Mississauga, ON (Canada); White, Jr., Curt M. [National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)

    2016-06-16

    United States. When abandoned, many wells were not adequately sealed and now provide a potential conduit for the vertical movement of liquids and gases. Today, groundwater aquifers can be contaminated by surface pollutants flowing down wells or by deep, saline water diffusing upwards. Likewise, natural gas, carbon dioxide (CO2), or radon can travel upwards via these wells to endanger structures or human health on the surface. Recently, the need to find and plug wells has become critical with the advent of carbon dioxide injection into geologic formations for enhanced oil recovery (EOR) or carbon storage. The potential for natural gas or brine leakage through existing wells has also been raised as a concern in regions where shale resources are hydraulically fractured for hydrocarbon recovery. In this study, the National Energy Technology Laboratory (NETL) updated existing, effective well finding techniques to be able to survey large areas quickly using helicopter or ground-vehicle-mounted magnetometers, combined with mobile methane detection. For this study, magnetic data were collected using airborne and ground vehicles equipped with two boom-mounted magnetometers, or on foot using a hand-held magnetometer with a single sensor. Data processing techniques were employed to accentuate well-casing-type magnetic signatures. To locate wells with no magnetic signature (wells where the steel well casing had been removed), the team monitored for anomalous concentrations of methane, which could indicate migration of volatile compounds from deeper sedimentary strata along a well or fracture pathway. Methane measurements were obtained using the ALPIS DIfferential Absorption Lidar (DIAL) sensor for helicopter surveys and the Apogee leak detection system (LDS) for ground surveys. These methods were evaluated at a 100-year-old oilfield in Wyoming, where a helicopter magnetic survey accurately located 93% of visible wells. In addition, 20% of the wells found by the survey were

  19. Dynamics of atom tunnelling in a symmetric double well coupled to an asymmetric double well: The case of malonaldehyde

    Indian Academy of Sciences (India)

    S Ghosh; S P Bhattacharyya

    2012-01-01

    The quantum dynamics of intramolecular H-atom transfer in malonaldehyde is investigated with a model two-dimensional Hamiltonian constructed with the help of available ab initio theoretical data on the relevant portion of the potential energy surface. At zero temperature, the H-atom transfer takes place by tunnelling leading to cis-cis isomerization while the cis-trans channel remains closed. Local excitation of the cis-trans mode by an external field is predicted to quench cis-cis tunnelling isomerization while excitation of the cis-cis mode is found to enhance the isomerization by tunnelling.

  20. Human remains found in two wells: a forensic entomology perspective.

    Science.gov (United States)

    Magni, Paola A; Borrini, Matteo; Dadour, Ian R

    2013-09-01

    When estimating the time since death or manner of death, the identification and the pathological evaluations of a body are generally impeded by post mortem changes. Research and case studies help experts to achieve a more accurate diagnosis, but at present there is scant literature covering topics concerning forensic science and decompositional processes in aquatic environments. The two case studies presented each involve a decomposed body found in a unique aquatic environment; namely wells containing ground water. In Case 1 an entomologist attended the scene and in Case 2 an entomologist was only involved after 20 months when it was decided that the insect evidence collected at the second autopsy may be useful in determining a time frame. The first case highlights the problems associated with body retrieval from aquatic environments as the body was removed it dismembered. Fortunately, the well was able to be drained, so much of the insect evidence was retrieved. In the second case the body was found dismembered but the entomological evidence was overlooked and lost. During the second autopsy insects were found, collected, and sent to an entomologist to help clarify the post mortem interval.

  1. Phenotypic Classification of Well-Differentiated Gastric Adenocarcinoma

    Institute of Scientific and Technical Information of China (English)

    Ying Wu; Zhong-wu Li; Ji-you Li

    2009-01-01

    Objective: To investigate the genotypes of well-differentiated non-cardiac gastric adenocarcinoma and their clinicopathological significance.Methods: Sixty-four cases of well-differentiated non-cardiac gastric adenocarcinoma were included in this study. The expressions of intestinal phenotypic markers including CDX2, MUC2, Li-cadherin, CD10, Hepatocyte(Hep) and Villin, and gastric phenotypic markers including MUC5AC and pS2 were detected immunohistochemically. Based on the expressions of phenotypic markers, 64 cases can be divided into four phenotypes. Cases only expressing intestinal phenotypic markers were classified as intestinal phenotype; cases only expressing gastric phenotypic markers as gastric phenotype; cases expressing both intestinal and gastric phenotypic markers as gastrointestinal phenotype; and cases expressing neither intestinal nor gastric phenotypic marker as null phenotype. The association of phenotype and clinic-pathological parameters was analyzed. We also detected the expressions of markers related to the development and progression of cancer, including Rb, P53, c-Met, MIF, TGF-β-RII, β-catenin, CD44v6 and E-cadherin.Results: Of 64 cases, 33(51.6%) were intestinal type, 3(4.7%) were gastric type, 25(39.1%) were gastrointestinal type and 3(4.7%) were null type. Fifty-eight cases were either intestinal or gastrointestinal type, which accounted for 90.6% of all the cases. In addition, there was an association between phenotype and biological behaviors (invasion or metastasis). The biological behaviors of intestinal and gastrointestinal type were better than gastric type. Compared with intestinal, gastric and gastrointestinal types, the biological behaviors of null type were the most aggressive. The biological behaviors of gastric carcinoma tended to be better as the number of expression of intestinal markers increased. Expression of markers related to the development and progression of cancer was not significantly correlated with phenotypes

  2. BATHROOM TRANSFORMATION: FROM HYGIENE TO WELL-BEING?

    DEFF Research Database (Denmark)

    Quitzau, Maj-Britt; Røpke, Inge

    2009-01-01

    Western bathroom standards, which have long been dominated by ideas of hygiene, seem to be in the process of change. Whereas transformations of kitchens have been well studied, little attention has been directed towards the contemporary development of bathrooms. This article provides a case study...

  3. Rights Well: An Authors' Rights Workshop for Librarians

    Science.gov (United States)

    Wirth, Andrea A.; Chadwell, Faye A.

    2010-01-01

    This article seeks to make a compelling case for authors' rights training through emphasis on academic librarians' dual roles as both authors and as liaisons to research and teaching faculty. Using the example of the Rights Well Workshop developed at Oregon State University Libraries, the article demonstrates the value of training librarians as…

  4. Are local wind power resources well estimated?

    Science.gov (United States)

    Lundtang Petersen, Erik; Troen, Ib; Jørgensen, Hans E.; Mann, Jakob

    2013-03-01

    Planning and financing of wind power installations require very importantly accurate resource estimation in addition to a number of other considerations relating to environment and economy. Furthermore, individual wind energy installations cannot in general be seen in isolation. It is well known that the spacing of turbines in wind farms is critical for maximum power production. It is also well established that the collective effect of wind turbines in large wind farms or of several wind farms can limit the wind power extraction downwind. This has been documented by many years of production statistics. For the very large, regional sized wind farms, a number of numerical studies have pointed to additional adverse changes to the regional wind climate, most recently by the detailed studies of Adams and Keith [1]. They show that the geophysical limit to wind power production is likely to be lower than previously estimated. Although this problem is of far future concern, it has to be considered seriously. In their paper they estimate that a wind farm larger than 100 km2 is limited to about 1 W m-2. However, a 20 km2 off shore farm, Horns Rev 1, has in the last five years produced 3.98 W m-2 [5]. In that light it is highly unlikely that the effects pointed out by [1] will pose any immediate threat to wind energy in coming decades. Today a number of well-established mesoscale and microscale models exist for estimating wind resources and design parameters and in many cases they work well. This is especially true if good local data are available for calibrating the models or for their validation. The wind energy industry is still troubled by many projects showing considerable negative discrepancies between calculated and actually experienced production numbers and operating conditions. Therefore it has been decided on a European Union level to launch a project, 'The New European Wind Atlas', aiming at reducing overall uncertainties in determining wind conditions. The

  5. Performance of high-rate gravel-packed oil wells

    Energy Technology Data Exchange (ETDEWEB)

    Unneland, Trond

    2001-05-01

    Improved methods for the prediction, evaluation, and monitoring of performance in high-rate cased-hole gravel-packed oil wells are presented in this thesis. The ability to predict well performance prior to the gravel-pack operations, evaluate the results after the operation, and monitor well performance over time has been improved. This lifetime approach to performance analysis of gravel-packed oil wells contributes to increase oil production and field profitability. First, analytical models available for prediction of performance in gravel-packed oil wells are reviewed, with particular emphasis on high-velocity flow effects. From the analysis of field data from three North Sea oil fields, improved and calibrated cased-hole gravel-pack performance prediction models are presented. The recommended model is based on serial flow through formation sand and gravel in the perforation tunnels. In addition, new correlations for high-velocity flow in high-rate gravel-packed oil wells are introduced. Combined, this improves the performance prediction for gravel-packed oil wells, and specific areas can be targeted for optimized well design. Next, limitations in the current methods and alternative methods for evaluation and comparison of well performance are presented. The most widely used parameter, the skin factor, remains a convenient and important parameter. However, using the skin concept in direct comparisons between wells with different reservoir properties may result in misleading or even invalid conclusions. A discussion of the parameters affecting the skin value, with a clarification of limitations, is included. A methodology for evaluation and comparison of gravel-packed well performance is presented, and this includes the use of results from production logs and the use of effective perforation tunnel permeability as a parameter. This contributes to optimized operational procedures from well to well and from field to field. Finally, the data sources available for

  6. Nitrogen Monitoring of West Hackberry 117 Cavern Wells.

    Energy Technology Data Exchange (ETDEWEB)

    Bettin, Giorgia; Lord, David

    2015-02-01

    U.S. Strategic Petroleum Reserve (SPR) oil storage cavern West Hackberry 117 was tested under extended nitrogen monitoring following a successful mechanical integrity test in order to validate a newly developed hydrostatic column model to be used to differentiate between normal "tight" well behavior and small-leak behavior under nitrogen. High resolution wireline pressure and temperature data were collected during the test period and used in conjunction with the hydrostatic column model to predict the nitrogen/oil interface and the pressure along the entire fluid column from the bradenhead flange nominally at ground surface to bottom of brine pool. Results here and for other SPR caverns have shown that wells under long term nitrogen monitoring do not necessarily pressurize with a relative rate (P N2 /P brine) of 1. The theoretical relative pressure rate depends on the well configuration, pressure and the location of the nitrogen-oil interface and varies from well to well. For the case of WH117 the predicted rates were 0.73 for well A and 0.92 for well B. The measured relative pressurization rate for well B was consistent with the model prediction, while well A rate was found to be between 0.58-0.68. A number of possible reasons for the discrepancy between the model and measured rates of well A are possible. These include modeling inaccuracy, measurement inaccuracy or the possibility of the presence of a very small leak (below the latest calculated minimum detectable leak rate).

  7. CEMENT SLURRIES FOR GEOTHERMAL WELLS CEMENTING

    OpenAIRE

    Nediljka Gaurina-Međimurec; Davorin Matanović; Gracijan Krklec

    1994-01-01

    During a well cementing special place belongs to the cement slurry design. To ensure the best quality of cementing, a thorough understanding of well parameters is essential, as well as behaviour of cement slurry (especially at high temperatures) and application of proven cementing techniques. Many cement jobs fail because of bad job planning. Well cementing without regarding what should be accomplished, can lead to well problems (channels in the cement, unwanted water, gas or fluid production...

  8. Recommender System for Personalised Wellness Therapy

    OpenAIRE

    Thean Pheng Lim; Wahidah Husain; Nasriah Zakaria

    2013-01-01

    rising costs and risks in health care have shifted the preference of individuals from health treatment to disease prevention. This prevention treatment is known as wellness. In recent years, the Internet has become a popular place for wellness-conscious users to search for wellness-related information and solutions. As the user community becomes more wellness conscious, service improvement is needed to help users find relevant personalised wellness solutions. Due to rapid development in the w...

  9. Linkages between landscapes and human well-being

    DEFF Research Database (Denmark)

    Bieling, Claudia; Plieninger, Tobias; Pirker, Heidemarie;

    2014-01-01

    Human well-being is tightly linked to the natural environment. Although this notion is well-established, it remains difficult to assess how the biophysical features of a specific area contribute towards the well-being of the people attached to it. We explore this topic using the case of four areas...... in Germany and Austria by performing open, single-question interviews with 262 respondents. Data reveal an outstanding relevance of nonmaterial values. Linkages between landscapes and human well-being are tied to specific features of the material environment but, likewise, practices and experiences play...... to engage with their natural surroundings should be considered a strategy for fostering human well-being. ...

  10. Well-purging criteria for sampling purgeable organic compounds

    Science.gov (United States)

    Gibs, J.; Imbrigiotta, T.E.

    1990-01-01

    The results indicate that 1) purgeable organic compound concentrations stabilized when three casing volume were purged in only 55% of the cases evaluated in this study, 2) purgeable organic compounds concentrations did not consistently follow the temporal variation of, nor stabilize at the same time as, the measure field characteristics, and 3) purging to achieve hydraulic equilibrium between casing and aquifer water consistently underestimated the time and casing volumes needed to achieve stable values of water-quality measurements in highly transmissive aquifers. The conclusion from these data is that none of the previously recommended criteria for purging a well can be applied reliably to collecting a "representative' sample of purgeable organic compounds. These results indicate that the criteria for purging a well prior to sampling for purgeable organic compounds must take into account other factors, such as the unique hydrogeologic characteristics of a site, the nature and extent of purgeable organic compounds present, and areal extent of the contamination, the well construction, and the sampling objectives of the investigation. -from Authors

  11. Well-Being, Science, and Philosophy

    DEFF Research Database (Denmark)

    Rodogno, Raffaele

    2014-01-01

    Academic research on well-being is pursued in multiple disciplines and currently exploding. Governments are also interested in the topic, as witnessed by their recent efforts to develop statistical measures of progress that include well-being indicators. Combined, this interest opens the door...... to the fruitful application of well-being research to society. Research on well-being, however, is not always well integrated across the disciplines that purport to study it. In particular, there is insufficient communication between the empirical study of well-being, and its normative/conceptual study as pursued...

  12. Gas Deliverability Model with Different Vertical Wells Properties

    Directory of Open Access Journals (Sweden)

    L. Mucharam

    2003-11-01

    Full Text Available We present here a gas deliverability computational model for single reservoir with multi wells. The questions of how long the gas delivery can be sustained and how to estimate the plateau time are discussed here. In order to answer such a question, in this case, a coupling method which consists of material balance method and gas flow equation method is developed by assuming no water influx in the reservoir. Given the rate and the minimum pressure of gas at the processing plant, the gas pressure at the wellhead and at the bottom hole can be obtained. From here, the estimation of the gas deliverability can be done. In this paper we obtain a computational method which gives direct computation for pressure drop from the processing plant to the wells, taking into account different well behavior. Here AOF technique is used for obtaining gas rate in each well. Further Tian & Adewumi correlation is applied for pressure drop model along vertical and horizontal pipes and Runge-Kutta method is chosen to compute the well head and bottom hole pressures in each well which then being used to estimate the plateau times. We obtain here direct computational scheme of gas deliverability from reservoir to processing plant for single reservoir with multi-wells properties. Computational results give different profiles (i.e. gas rate, plateau and production time, etc for each well. Further by selecting proper flow rate reduction, the flow distribution after plateau time to sustain the delivery is computed for each well.

  13. Application of the ''well to well'' pneumatic pumping system to shallow wells in the Ebano-Panuco area, northern district (Mexico)

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez J., W.

    1974-07-01

    The asphaltic crude of shallow wells in the Ebano-Panuco district of the N. district of the N. zone of Mexico is economically produced by gas lift in 70 wells, eliminating compressors, and taking gas at 15 to 25 kg/sq cm from other wells, and filtering and separating it. Because of the bad condition of the casing, small-diameter tubing (3/4 to 1-1/4 in.) is used for the gas string, and the oil is produced through the annulus between it and a 4-1/2 in. tubing. Gas discharge valves are eliminated, and the gas flows at the bottom through a 5/32-in. hole in the injection tubing. Detailed cost data are given for the system.

  14. Silicon Germanium Quantum Well Solar Cell Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Quantum-well structures embodied on single crystal silicon germanium drastically enhanced carrier mobilities.  The cell-to-cell circuits of quantum-well PV...

  15. Learning to Live Well with Celiac Disease

    Science.gov (United States)

    ... page please turn JavaScript on. Feature: Celiac Disease Learning to Live Well with Celiac Disease Past Issues / ... Symptoms, Diagnosis & Treatment / Four Inches and Seven Pounds… / Learning to Live Well with Celiac Disease / Living Gluten- ...

  16. Conservation Lands and Preserves, Private - Conservation Wells

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — The conservation well layer identifies the permitted surface location of oil and gas conservation wells that have not been plugged. These include active, regulatory...

  17. DETERMINING TRAVEL MOTIVATIONS OF WELLNESS TOURISM

    OpenAIRE

    Težak Damijanić, Ana; Šergo, Zdravko

    2013-01-01

    Wellness tourism is a relatively new form of tourism based on special interest of consumers. In order to create appropriate marketing strategy it is necessary to better understand travel motivation for this segment. The purpose of this paper is to explore travel motives in the context of wellness tourism. The aim of this paper is twofold: 1) to determine how well the general proposed structure of push and pull motivating factors applies to tourists who consider wellness services an important ...

  18. Business Plan for the Wellness Hotel

    OpenAIRE

    Bučková, Lenka

    2014-01-01

    The aim of this thesis is to characterize the situation in the field of wellness and subsequently set the wellness hotel business plan. The emphasis is placed on finding public awareness about the importance of the field of wellness and public interest in a healthy lifestyle. The work focuses on the research of the demand, which builds actual business plan. The processing of this thesis will help in deciding whether the project of the wellness hotel is realistic.

  19. Conceptualising Well-being for Autistic Persons

    NARCIS (Netherlands)

    Robeyns, I.A.M.

    2016-01-01

    In the philosophy of well-being, there is hardly anything written on the lives of people with autism, or on the question whether existing philosophical theories of well-being are suited for understanding how well the lives of autistic persons are going. This paper tries to make some progress towards

  20. Innovativeness and Subjective Well-Being

    Science.gov (United States)

    Binder, Martin

    2013-01-01

    What are the effects of innovativeness on well-being? This paper argues that research on subjective well-being has progressed to a point where measures of subjective well-being (or: happiness) can usefully be employed to assess the welfare effects of innovative change. Based on a discussion of the prospects and pitfalls associated with subjective…

  1. Promoting Subjective Well-Being at Work

    Science.gov (United States)

    Russell, Joyce E. A.

    2008-01-01

    Research has clearly shown the relationship between subjective well-being and work performance, even though there is debate over the causality of that relationship (i.e., does subjective well-being cause higher work performance or does greater work performance lead to subjective well-being?). Regardless, researchers and practitioners would agree…

  2. Measuring Well-Being and Progress

    Science.gov (United States)

    D'Acci, Luca

    2011-01-01

    Well-being is becoming a concept which is more and more involved in any world development consideration. A large amount of work is being carried out to study measurements of well-being, including a more holistic vision on the development and welfare of a country. This paper proposes an idea of well-being and progress being in equilibrium with each…

  3. STIMULATION TECHNOLOGIES FOR DEEP WELL COMPLETIONS

    Energy Technology Data Exchange (ETDEWEB)

    Stephen Wolhart

    2003-06-01

    The Department of Energy (DOE) is sponsoring a Deep Trek Program targeted at improving the economics of drilling and completing deep gas wells. Under the DOE program, Pinnacle Technologies is conducting a project to evaluate the stimulation of deep wells. The objective of the project is to assess U.S. deep well drilling & stimulation activity, review rock mechanics & fracture growth in deep, high pressure/temperature wells and evaluate stimulation technology in several key deep plays. Phase 1 was recently completed and consisted of assessing deep gas well drilling activity (1995-2007) and an industry survey on deep gas well stimulation practices by region. Of the 29,000 oil, gas and dry holes drilled in 2002, about 300 were drilled in the deep well; 25% were dry, 50% were high temperature/high pressure completions and 25% were simply deep completions. South Texas has about 30% of these wells, Oklahoma 20%, Gulf of Mexico Shelf 15% and the Gulf Coast about 15%. The Rockies represent only 2% of deep drilling. Of the 60 operators who drill deep and HTHP wells, the top 20 drill almost 80% of the wells. Six operators drill half the U.S. deep wells. Deep drilling peaked at 425 wells in 1998 and fell to 250 in 1999. Drilling is expected to rise through 2004 after which drilling should cycle down as overall drilling declines.

  4. Well integrity failure in the UK

    Science.gov (United States)

    Worrall, F.

    2015-12-01

    The aim of this study was to consider the potential legacy of increased onshore, unconventional gas production by examining the integrity of decommissioned, onshore, oil and gas wells in the UK. In the absence of a history of unconventional hydrocarbon exploitation in the UK, conventional onshore sites were considered and an examination of pollution incidents records had suggested that only a small fraction of operational, onshore wells could show integrity failures. A consideration of groundwater and surface water quality monitoring could find no regional impact of historic or current conventional oil and gas exploitation in the UK. As a more direct measure of well legacy this study considered the fugitive emissions of methane from former oil and gas wells onshore in the UK as a measure of well integrity. The survey considered 102 decommissioned (abandoned) wells from 4 different basins that were between 8 and 78 years old; all but one of these wells would be considered as having been decommissioned properly, i.e. wells cut, sealed and buried by soil cover to the extent that the well sites were being used for agriculture. For each well site the soil gas methane was analysed multiple times and assessed relative to a nearby control site of similar land-use and soil type. The results showed that of the 102 wells surveyed, 30% had soil gas CH4 at the soil surface that was significantly greater than their respective control. Conversely, 39% of well sites had significant lower surface soil gas CH4 concentrations than their respective control. We interpret elevated soil gas CH4 concentrations to be the result of well integrity failure, but do not know the source of the gas nor the route to the surface. Where elevated CH4 was detected it appears to have occurred within a decade of the well being decommissioned. The flux of CH4 from wells was 364 ± 677 kg CO2eq/well/yr with a 27% chance that any well would be a net sink of CH4 independent of well age. This flux is low

  5. Borderline Cases and Definiteness

    OpenAIRE

    Vecsey, Zoltán

    2012-01-01

    Borderline cases of vague predicates are often characterized with the help of a definiteness operator. Although such operators can certainly contribute to the solution of the problem of vagueness, they may also generate unexpected consequences. Either borderlineness is identified implicitly with a well-defined range of cases, or borderline cases are seen as being definitely borderline. In this paper I argue that we can avoid these consequences by providing an asymmetric definition of borderli...

  6. Testing geopressured geothermal reservoirs in existing wells: Detailed completions prognosis for geopressured-geothermal well of opportunity, prospect #1

    Energy Technology Data Exchange (ETDEWEB)

    Kennedy, Clovis A.

    1980-04-03

    This prospective well of opportunity was originally drilled and completed as a gas producer by Wrightsman Investment Company in early 1973. The original and present producing interval was from 15,216 to 15,238 feet. IMC Exploration Company, Inc. acquired the property from Wrightsman and is the present owner operator. The well is presently shut in s a non-economic producer and IMC proposed to perform plug and abandonment operations in April, 1980. This well has a good geopressured-geothermal water sand behind the 5-1/2 inch casing that has 94 feet of net sand thickness. Pursuant to DOE/NVO authorization of March 11,1980, Eaton negotiated an option agreement with IMC whereby IMC would delay their abandonment operations for a period of 90 days to permit DOE to evaluate the well for geopressure-geothermal testing. The IMC-Eaton option agreements provide that IMG will delay plugging the well until June 15, 1980. If Eaton exercises its option to acquire the well, IMC will sell the well bore, and an adjacent salt water disposal well, to Eaton for the sole consideration of Eaton assuming the obligation to plug and abandon the wells in accordance with lease and regulatory requirements. If Eaton does not exercise its option, then Eaton will pay IMC $95,000 cash and IMC will proceed with plugging and abandonment at the termination of the option period.

  7. Genetics Home Reference: Muckle-Wells syndrome

    Science.gov (United States)

    ... cases with hyperpigmented sclerodermoid skin lesions. Int J Dermatol. 2006 Mar;45(3):239-44. Citation on ... JR. Autoinflammatory diseases: clinical and genetic advances. Arch Dermatol. 2008 Mar;144(3):392-402. Review. Citation ...

  8. Methods for Finding Legacy Wells in Residential and Commercial Areas

    Energy Technology Data Exchange (ETDEWEB)

    Hammack, Richard W. [National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States); Veloski, Garret A. [National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)

    2016-06-16

    In 1919, the enthusiasm surrounding a short-lived gas play in Versailles Borough, Pennsylvania resulted in the drilling of many needless wells. The legacy of this activity exists today in the form of abandoned, unplugged gas wells that are a continuing source of fugitive methane in the midst of a residential and commercial area. Flammable concentrations of methane have been detected near building foundations, which have forced people from their homes and businesses until methane concentrations decreased. Despite mitigation efforts, methane problems persist and have caused some buildings to be permanently abandoned and demolished. This paper describes the use of magnetic and methane sensing methods by the National Energy Technology Laboratory (NETL) to locate abandoned gas wells in Versailles Borough where site access is limited and existing infrastructure can interfere. Here, wells are located between closely spaced houses and beneath buildings and parking lots. Wells are seldom visible, often because wellheads and internal casing strings have been removed, and external casing has been cut off below ground level. The magnetic survey of Versailles Borough identified 53 strong, monopole magnetic anomalies that are presumed to indicate the locations of steel-cased wells. This hypothesis was tested by excavating the location of one strong, monopole magnetic anomaly that was within an area of anomalous methane concentrations. The excavation uncovered an unplugged gas well that was within 0.2 m of the location of the maximum magnetic signal. Truck-mounted methane surveys of Versailles Borough detected numerous methane anomalies that were useful for narrowing search areas. Methane sources identified during truck-mounted surveys included strong methane sources such as sewers and methane mitigation vents. However, inconsistent wind direction and speed, especially between buildings, made locating weaker methane sources (such as leaking wells) difficult. Walking surveys with

  9. Multi-Well Potentials in Quantum Mechanics and Stochastic Processes

    Directory of Open Access Journals (Sweden)

    Victor P. Berezovoj

    2010-12-01

    Full Text Available Using the formalism of extended N=4 supersymmetric quantum mechanics we consider the procedure of the construction of multi-well potentials. We demonstrate the form-invariance of Hamiltonians entering the supermultiplet, using the presented relation for integrals, which contain fundamental solutions. The possibility of partial N=4 supersymmetry breaking is determined. We also obtain exact forms of multi-well potentials, both symmetric and asymmetric, using the Hamiltonian of harmonic oscillator as initial. The modification of the shape of potentials due to variation of parameters is also discussed, as well as application of the obtained results to the study of tunneling processes. We consider the case of exact, as well as partially broken N=4 supersymmetry. The distinctive feature of obtained probability densities and potentials is a parametric freedom, which allows to substantially modify their shape. We obtain the expressions for probability densities under the generalization of the Ornstein-Uhlenbeck process.

  10. ANAPPRES: An expert system for interference well-test analysis

    Energy Technology Data Exchange (ETDEWEB)

    Arellano, V.M.; Iglesias, E.R.; Arellano, J.; Schwarzblat, M.

    1988-01-01

    We present ANAPPRES V1.0, the first version of a computerized expert system capable of analyzing constant- and variable-flowrate interference tests, in which there is one active well and an arbitrary number of observation wells, in liquid-saturated homogeneous reservoirs. ANAPPRES successfully couples mathematical models, optimization techniques, heuristic knowledge and computerized graphics, a combination not often found in published expert systems. Its main advantages are that it is user friendly, requires essentially no experience on the part of the analyst, eliminates subjectivity associated with earlier techniques of analysis, can handle complex cases and large data sets, completes the analysis of even the most complex cases (including plotting the results) in one run, and is significantly faster than a human expert.

  11. Resilience in well operations through use of collaboration technologies

    OpenAIRE

    Weltzien, Audun Hultgreen

    2011-01-01

    The thesis studied resilience in drilling and well operations at an oil company operating on the Norwegian continental shelf, with a major focus on the onshore drilling support function in the case company. Drilling for oil and gas involves significant risks, according to scientists, authorities and the industry itself. The risks of offshore oil extraction have also been manifested through major accidents like the Deepwater Horizon. At the same time, the industry faces challenges like less re...

  12. Apparatus for operating a gas and oil producting well

    International Nuclear Information System (INIS)

    This patent describes an apparatus for operating a gas and oil producing well of the plunger lift type including a cylindrical tubing mounted in concentrically spaced relation within a vertical well casing that is embedded in an oil and gas producing formation, the casing and tubing being perforated adjacent their lower ends; a plunger mounted for vertical movement in the tubing, the plunger normally having an initial lower position adjacent the lower end of the tubing and being vertically displaceable toward an upper position adjacent the upper end thereof; an outlet conduit connected at one end with the upper end of the tubing, the outlet conduit including gas and oil branch legs for discharging gas and oil, respectively; and normally closed gas and fluid discharge valves connected in the gas and oil branches, respectively. It comprises: means for comparing the casing and tubing pressures; means for opening the gas discharge valve; means for opening the fluid discharge valve; means for initially closing the fluid discharge valve when the plunger reaches its upper position adjacent the upper end of the tubing; means operable after a given first period following closing of the fluid discharge valve for reopening the fluid discharge valve only when both: the oil level produces a pressure difference greater than the selected difference value, and the casing pressure is greater than the selected lift value

  13. Understanding wellness center loyalty through lifestyle analysis.

    Science.gov (United States)

    Suresh, Satya; Ravichandran, Swathi; P, Ganesan

    2011-01-01

    Many changes taking place at a macro-level in Indian society along with the popularity of services that are native to India, such as Yoga and Ayurveda, have generated significant interest in wellness services. To assist wellness centers in gaining loyal clients, the goal of this study was to understand the influence of customer lifestyle factors on wellness center loyalty. The activities, interests, and opinions model was used to understand the lifestyles of wellness center clients. Data were collected from clients of five wellness centers. Regression results indicate that overworked individuals and those seeking a balance between work and family life would be the most loyal to wellness centers. Managerial implications of results are discussed. PMID:21347940

  14. Productivity and injectivity of horizontal wells

    Energy Technology Data Exchange (ETDEWEB)

    Aziz, Khalid

    2000-03-06

    One of the key issues addressed was pressure drop in long horizontal wells and its influence on well performance. Very little information is available in the literature on flow in pipes with influx through pipe walls. Virtually all of this work has been in small diameter pipes and with single-phase flow. In order to address this problem new experimental data on flow in horizontal and near horizontal wells have been obtained. Experiments were conducted at an industrial facility on typical 6 1/8 ID, 100 feet long horizontal well model. The new data along with available information in the literature have been used to develop new correlations and mechanistic models. Thus it is now possible to predict, within reasonable accuracy, the effect of influx through the well on pressure drop in the well.

  15. Current-Enhanced Quantum Well Solar Cells

    Institute of Scientific and Technical Information of China (English)

    LOU Chao-Gang; SUN Qiang; XU Jun; ZHANG Xiao-Bing; LEI Wei; WANG Bao-Ping; CHEN Wen-Jun; QIAO Zai-Xiang

    2006-01-01

    We present the experimental results that demonstrate the enhancement of the short-circuit current of quantum well solar cells. The spectral response shows that the introduction of quantum wells extends the absorption spectrum of solar cells. The current densities under different truncated spectrums significantly increase, showing that quantum well solar cells are suitable to be the middle cells of GaInP/GaAs/Ge triple-junction solar cells to increase their overall conversion efficiency.

  16. Sustainability and well-being indicators

    OpenAIRE

    Neumayer, Eric

    2004-01-01

    This paper provides a review and critical discussion of indicators, which attempt to combine the measurement of sustainability with that of well-being. It starts with some commonly agreed definitions of sustainability, showing how most well-being indicators tell us little if anything at all about this issue. Sustainability is most commonly defined in economics as non-declining utility or well-being over time. Yet, due to its future orientation, most indicators of sustainability such as Genuin...

  17. Arsenic management through well modification and simulation

    Science.gov (United States)

    Halford, Keith J.; Stamos, Christina L.; Nishikawa, Tracy; Martin, Peter

    2010-01-01

    Arsenic concentrations can be managed with a relatively simple strategy of grouting instead of completely destroying a selected interval of well. The strategy of selective grouting was investigated in Antelope Valley, California, where groundwater supplies most of the water demand. Naturally occurring arsenic typically exceeds concentrations of 10 (mu or u)g/L in the water produced from these long-screened wells. The vertical distributions of arsenic concentrations in intervals of the aquifer contributing water to selected supply wells were characterized with depth-dependent water-quality sampling and flow logs. Arsenic primarily entered the lower half of the wells where lacustrine clay deposits and a deeper aquifer occurred. Five wells were modified by grouting from below the top of the lacustrine clay deposits to the bottom of the well, which reduced produced arsenic concentrations to less than 2 (mu or u)g/L in four of the five wells. Long-term viability of well modification and reduction of specific capacity was assessed for well 4-54 with AnalyzeHOLE, which creates and uses axisymmetric, radial MODFLOW models. Two radial models were calibrated to observed borehole flows, drawdowns, and transmissivity by estimating hydraulicconductivity values in the aquifer system and gravel packs of the original and modified wells. Lithology also constrained hydraulic-conductivity estimates as regularization observations. Well encrustations caused as much as 2 (mu or u)g/L increase in simulated arsenic concentration by reducing the contribution of flow from the aquifer system above the lacustrine clay deposits. Simulated arsenic concentrations in the modified well remained less than 3 (mu or u)g/L over a 20-year period.

  18. Material wealth and subjective well-being

    OpenAIRE

    Biswas-Diener, Robert

    2009-01-01

    People have long argued over the relation of income and material well-being to happiness. A variety of studies have examined the happiness of those living at the lowest economic levels as well as those living in relatively affluent nations. Taken together, this body of research suggests that income is correlated with subjective well-being (SWB), but is neither the most important factor in happiness, nor is this relationship unmediated or context free. The studies in the current dissertation o...

  19. Retrospectives: Schumpeter, David Wells, and Creative Destruction

    OpenAIRE

    Michael Perelman

    1995-01-01

    Joseph A. Schumpeter's celebrated theory of creative destruction was anticipated by David Wells's Recent Economic Changes (1989). In some respects, Wells's treatment is superior to that of Schumpeter. Unlike Schumpeter, who believed that monopolistic competition could maximize economic growth, Wells held that cartels or trusts were necessary to prevent capital-intensive firms from competing themselves into bankruptcy and sending the economy into a depression.

  20. Predictors of Wellness and American Indians

    OpenAIRE

    Hodge, Felicia S.; Nandy, Karabi

    2011-01-01

    Wellness is an important American Indian (AI) concept, understood as being in balance with one’s body, mind, and environment. Wellness predictors are reported in this paper within the context of health. A cross-sectional randomized household survey of 457 AI adults at 13 rural health care sites in California was conducted. Measures included wellness perceptions, barriers, health status/health conditions, spirituality, cultural connectivity, high-risk behaviors and abuse history. Statistical a...

  1. Arsenic management through well modification and simulation.

    Science.gov (United States)

    Halford, Keith J; Stamos, Christina L; Nishikawa, Tracy; Martin, Peter

    2010-01-01

    Arsenic concentrations can be managed with a relatively simple strategy of grouting instead of completely destroying a selected interval of well. The strategy of selective grouting was investigated in Antelope Valley, California, where groundwater supplies most of the water demand. Naturally occurring arsenic typically exceeds concentrations of 10 microg/L in the water produced from these long-screened wells. The vertical distributions of arsenic concentrations in intervals of the aquifer contributing water to selected supply wells were characterized with depth-dependent water-quality sampling and flow logs. Arsenic primarily entered the lower half of the wells where lacustrine clay deposits and a deeper aquifer occurred. Five wells were modified by grouting from below the top of the lacustrine clay deposits to the bottom of the well, which reduced produced arsenic concentrations to less than 2 microg/L in four of the five wells. Long-term viability of well modification and reduction of specific capacity was assessed for well 4-54 with AnalyzeHOLE, which creates and uses axisymmetric, radial MODFLOW models. Two radial models were calibrated to observed borehole flows, drawdowns, and transmissivity by estimating hydraulic-conductivity values in the aquifer system and gravel packs of the original and modified wells. Lithology also constrained hydraulic-conductivity estimates as regularization observations. Well encrustations caused as much as 2 microg/L increase in simulated arsenic concentration by reducing the contribution of flow from the aquifer system above the lacustrine clay deposits. Simulated arsenic concentrations in the modified well remained less than 3 microg/L over a 20-year period. PMID:20113363

  2. Feasibility of EGS Well Control Systems

    Energy Technology Data Exchange (ETDEWEB)

    Norann, Randy A [Perma Works LLC; Darlow, Richard [GeoTek Energy LLC

    2015-02-03

    This report covers the 8th major objective listed in Grant DE-FG36-08GO18185. This objective takes the information and experience gained from the development of 300°C well monitoring system and applies them to concepts envisioned for future geothermal well control systems supporting EGS power production. This report covers a large number of instrumentation and control system engineering issues for EGS wells while also providing a window into existing technology to address those issues.

  3. Pyroelectric Quantum Well Energy Harvesters Project

    Data.gov (United States)

    National Aeronautics and Space Administration — We propose the investigation of pyroelectric energy harvesters with enhanced efficiencies through quantum wells induced by a multilayer design.  Pyroelectric...

  4. Spin Splitting in Different Semiconductor Quantum Wells

    Institute of Scientific and Technical Information of China (English)

    郝亚非

    2012-01-01

    We theoretically investigate the spin splitting in four undoped asymmetric quantum wells in the absence of external electric field and magnetic field. The quantum well geometry dependence of spin splitting is studied with the Rashba and the Dresselhaus spin-orbit coupling included. The results show that the structure of quantum well plays an important role in spin splitting. The Rashba and the Dresselhaus spin splitting in four asymmetric quantum wells are quite different. The origin of the distinction is discussed in this work.

  5. Characterization Well R-22 Geochemistry Report

    Energy Technology Data Exchange (ETDEWEB)

    Patrick Longmire

    2002-09-01

    This report provides analytical results for groundwater collected during four characterization-sampling rounds conducted at well R-22 from March 2001 through March 2002. Characterization well R-22 was sampled from March 6 through 13, 2001; June 19 through 26, 2001; November 30 through December 10, 2001; and February 27 through March 7, 2002. The goal of the characterization efforts was to assess the hydrochemistry and to determine whether or not contaminants are present in the regional aquifer in the vicinity of the well. A geochemical evaluation of the analytical results for the well is also presented in this report.

  6. Gas well deliquification. 2nd. ed.

    Energy Technology Data Exchange (ETDEWEB)

    James Lea; Henry Nickens; Mike Wells [Texas Technical University, TX (United States). Petroleum Engineering Department

    2008-03-15

    Chapter 1: Introduction; Chapter 2: Recognizing Symptoms of Liquid Loading in Gas Wells; Chapter 3: Critical Velocity; Chapter 4: Systems Nodal Analysis; Chapter 5: Sizing Tubing; Chapter 6: Compression; Chapter 7: Plunger Lift; Chapter 8: Use of Foam to Deliquefy Gas Wells; Chapter 9: Hydraulic Pumping; Chapter 10: Use of Beam Pumps to Deliquefy Gas Wells; Chapter 11: Gas Lift; Chapter 12: Electric Submersible Pumps; Chapter 13: Progressing Cavity Pumps; Chapter 14: Coal Bed Methane; Chapter 15: Production Automation. Chapter 14, by David Simpson, based in the San Juan Basin, addresses issues in coal bed methane, low pressure operations, gas compression, gas measurement, oil field construction, gas well deliquification and project management.

  7. Stimulation Technologies for Deep Well Completions

    Energy Technology Data Exchange (ETDEWEB)

    Stephen Wolhart

    2005-06-30

    The Department of Energy (DOE) is sponsoring the Deep Trek Program targeted at improving the economics of drilling and completing deep gas wells. Under the DOE program, Pinnacle Technologies conducted a study to evaluate the stimulation of deep wells. The objective of the project was to review U.S. deep well drilling and stimulation activity, review rock mechanics and fracture growth in deep, high-pressure/temperature wells and evaluate stimulation technology in several key deep plays. This report documents results from this project.

  8. Researches about Relations among Learning Motivation and Subjective Well-Being of the Higher Primary School Students in North of Jiangsu--Case in Suqian City%苏北地区城镇中高年级小学生学习动机与主观幸福感的关系研究--以宿迁市为例

    Institute of Scientific and Technical Information of China (English)

    马琼; 郑玉梅; 陈艳

    2014-01-01

    This paper aims to explore the relationship between learning motivation and subjective well-being of the urban higher pupils. Learning motivation scale and subjective well-being questionnaire were administrated to 342 urban higher pupils of three schools, analy-sis of the survey concluded:motivation has a significant grade, gender and group differences, and subjective well-being has a significant grade difference;family satisfaction is the first factor of learning motivation and subjective well-being;the impact of academic satisfaction on learning motivation is particularly significant.%本论文旨在对城镇小学生学习动机与主观幸福感的关系进行调查与研究。通过问卷调查法,对三所学校342名小学生施测学习动机量表和主观幸福感问卷,分析得出:学习动机有显著的年级、性别和群体差异,而主观幸福感有显著的年级差异;家庭满意度是影响学习动机、主观幸福感的第一位因素;学业满意度对学习动机影响尤其显著。

  9. Polaron mass of charge carriers in semiconductor quantum wells

    Energy Technology Data Exchange (ETDEWEB)

    Maslov, A. Yu., E-mail: maslov.ton@mail.ioffe.ru; Proshina, O. V. [Russian Academy of Sciences, Ioffe Physical–Technical Institute (Russian Federation)

    2015-10-15

    A theory of the interaction of charge carriers with optical phonons in a quantum well is developed with consideration for interface optical phonons. The dependence of the polaron effective mass on the quantum-well dimensions and dielectric characteristics of barriers is analyzed in detail. It is shown that, in narrow quantum wells, a quasi-two-dimensional polaron can be formed. In this case, however, the interaction parameters are defined by the charge-carrier effective mass in the quantum well and by the frequencies of interface optical phonons. If barriers are made of a nonpolar material, the polaron effective mass depends on the quantum-well width. As the quantum-well width is increased, a new mechanism of enhancement of the electron–phonon interaction develops. The mechanism is implemented, if the optical phonon energy is equal to the energy of one of the electronic transitions. This condition yields an unsteady dependence of the polaron effective mass on the quantum-well width.

  10. Transport through quantum wells and superlattices on topological insulator surfaces.

    Science.gov (United States)

    Song, J-T; Li, Y-X; Sun, Q-F

    2014-05-01

    We investigate electron transmission coefficients through quantum wells and quantum superlattices on topological insulator surfaces. The quantum well or superlattice is not constituted by general electronic potential barriers but by Fermi velocity barriers which originate in the different topological insulator surfaces. It is found that electron resonant modes can be renormalized by quantum wells and more clearly by quantum superlattices. The depth and width of a quantum well and superlattice, the incident angle of an electron, and the Fermi energy can be used to effectively tune the electron resonant modes. In particular, the number N of periodic structures that constitute a superlattice can further strengthen these regulating effects. These results suggest that a device could be developed to select and regulate electron propagation modes on topological insulator surfaces. Finally, we also study the conductance and the Fano factor through quantum wells and quantum superlattices. In contrast to what has been reported before, the suppression factors of 0.4 in the conductance and 0.85 in the Fano factor are observed in a quantum well, while the transport for a quantum superlattice shows strong oscillating behavior at low energy and reaches the same saturated values as in the case of a quantum well at sufficiently large energies. PMID:24759077

  11. Research on Preventive Wellness in the Netherlands

    NARCIS (Netherlands)

    Lombarts, Angelique; Vork, Jacques

    2013-01-01

    Chapter 39 in Health, Tourism and Hospitality: Spas, Wellness and Medical Travel, 2nd Edition takes an in-depth and comprehensive look at the growing health, wellness and medical tourism sectors in a global context. The book analyses the history and development of the industries, the way in which th

  12. Hospital Organization, Administration and Wellness Programming.

    Science.gov (United States)

    Fleming, Jeanne Hmura

    1984-01-01

    Hospital organization, administration and planning, and implementation program procedures are reviewed in this article. Hospitals and medical centers are changing their strategies in the area of wellness programming since they offer the appropriate facilities for these programs. Various types of wellness programs currently being promoted are…

  13. Well-covered graphs and factors

    DEFF Research Database (Denmark)

    Randerath, Bert; Vestergaard, Preben D.

    2006-01-01

    A maximum independent set of vertices in a graph is a set of pairwise nonadjacent vertices of largest cardinality α. Plummer defined a graph to be well-covered, if every independent set is contained in a maximum independent set of G. Every well-covered graph G without isolated vertices has a perf...

  14. Well-faring Towards Uncertain Futures:

    DEFF Research Database (Denmark)

    Højlund, Susanne; Meinert, Lotte; Frederiksen, Martin Demant;

    2011-01-01

    The article explores how societal contexts create different possibilities for faring well towards the future for young marginalized people. Based on a comparative project including ethnographies from Brazil, Uganda, Georgia and Denmark the authors discuss well-faring as a time-oriented process...

  15. New Achievements in Well Logging Technology

    Institute of Scientific and Technical Information of China (English)

    Tan Tingdong

    1996-01-01

    @@ In the first five years of 1990s, new achievements made in China's onshore well logging technology have enhanced the benefits of exploration and development for complex oil and gas reservoirs and have thus showed the trend of the development of China's well logging technology towards the end of this century.

  16. Psychopolitical Literacy for Wellness and Justice

    Science.gov (United States)

    Prilleltensky, Isaac; Fox, Dennis R.

    2007-01-01

    Wellness and justice have attracted recent attention in psychology. Both within our discipline and within society at large, more needs to be done to elucidate the link between the two while taking into account the role of power and context. We suggest that wellness is achieved by the balanced and synergistic satisfaction of personal, relational,…

  17. A Collaborative University Model for Employee Wellness

    Science.gov (United States)

    Carter, Melondie R.; Kelly, Rebecca C.; Alexander, Chelley K.; Holmes, Lauren M.

    2011-01-01

    Universities are taking a more active approach in understanding and monitoring employees' modifiable health risk factors and chronic care conditions by developing strategies to encourage employees to start and sustain healthy behaviors. WellBama, the University of Alabama's signature health and wellness program, utilizes a collaborative model in…

  18. Supporting Wellness in Adult Online Education

    Science.gov (United States)

    Thompson, Jacklyn J.; Porto, Stella C. S.

    2014-01-01

    Online education cannot continue to grow at the current pace while ignoring a crucial component of campus support, wellness for adult online learners. This paper brings awareness to the concept of wellness as an important student support service in adult online education. It includes a summarized review of relevant literature and identifies…

  19. Kids Do Well If They Can

    Science.gov (United States)

    Greene, Ross

    2008-01-01

    Viewing challenging behavior as the result of lagging skills (kids do well if they can) rather than as poor motivation (kids do well if they want to) has significant ramifications for how adults interact with kids with behavioral challenges and try to help them. A wide range of lagging skills can set the stage for challenging behavior. Challenging…

  20. ESSA's Well-Rounded Education. Special Report

    Science.gov (United States)

    Jones, Scott D.; Workman, Emily

    2016-01-01

    As questions regarding the Every Student Succeeds Act (ESSA) flow in to Education Commission of the States, one frequent inquiry is about the concept of a "well-rounded education," referenced more than 20 times and included within the majority of Titles in the Act. State education leaders want to know what constitutes a well-rounded…

  1. Doing Gender Well and Differently in Management

    Institute of Scientific and Technical Information of China (English)

    于英

    2014-01-01

    The purpose of this paper is to revisit theoretical positions on gender and the implications for gender in management by building upon current research on doing gender well and re-doing or undoing gender and argue that gender can be done well and differently through simultaneous, multiple enactments of femininity and masculinity.

  2. Geothermally Coupled Well-Based Compressed Air Energy Storage

    Energy Technology Data Exchange (ETDEWEB)

    Davidson, Casie L. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Bearden, Mark D. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Horner, Jacob A. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Cabe, James E. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Appriou, Delphine [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); McGrail, B. Peter [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2015-12-20

    Previous work by McGrail et al. (2013, 2015) has evaluated the possibility of pairing compressed air energy storage with geothermal resources in lieu of a fossil-fired power generation component, and suggests that such applications may be cost competitive where geology is favorable to siting both the geothermal and CAES components of such a system. Those studies also note that the collocation of subsurface resources that meet both sets of requirements are difficult to find in areas that also offer infrastructure and near- to mid-term market demand for energy storage. This study examines a novel application for the compressed air storage portion of the project by evaluating the potential to store compressed air in disused wells by amending well casings to serve as subsurface pressure vessels. Because the wells themselves would function in lieu of a geologic storage reservoir for the CAES element of the project, siting could focus on locations with suitable geothermal resources, as long as there was also existing wellfield infrastructure that could be repurposed for air storage. Existing wellfields abound in the United States, and with current low energy prices, many recently productive fields are now shut in. Should energy prices remain stagnant, these idle fields will be prime candidates for decommissioning unless they can be transitioned to other uses, such as redevelopment for energy storage. In addition to the nation’s ubiquitous oil and gas fields, geothermal fields, because of their phased production lifetimes, also may offer many abandoned wellbores that could be used for other purposes, often near currently productive geothermal resources. These existing fields offer an opportunity to decrease exploration and development uncertainty by leveraging data developed during prior field characterization, drilling, and production. They may also offer lower-cost deployment options for hybrid geothermal systems via redevelopment of existing well-field infrastructure

  3. Geothermally Coupled Well-Based Compressed Air Energy Storage

    Energy Technology Data Exchange (ETDEWEB)

    Davidson, C L [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Bearden, Mark D [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Horner, Jacob A [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Appriou, Delphine [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); McGrail, B Peter [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2015-12-01

    Previous work by McGrail et al. (2013, 2015) has evaluated the possibility of pairing compressed air energy storage with geothermal resources in lieu of a fossil-fired power generation component, and suggests that such applications may be cost competitive where geology is favorable to siting both the geothermal and CAES components of such a system. Those studies also note that the collocation of subsurface resources that meet both sets of requirements are difficult to find in areas that also offer infrastructure and near- to mid-term market demand for energy storage. This study examines a novel application for the compressed air storage portion of the project by evaluating the potential to store compressed air in disused wells by amending well casings to serve as subsurface pressure vessels. Because the wells themselves would function in lieu of a geologic storage reservoir for the CAES element of the project, siting could focus on locations with suitable geothermal resources, as long as there was also existing wellfield infrastructure that could be repurposed for air storage. Existing wellfields abound in the United States, and with current low energy prices, many recently productive fields are now shut in. Should energy prices remain stagnant, these idle fields will be prime candidates for decommissioning unless they can be transitioned to other uses, such as redevelopment for energy storage. In addition to the nation’s ubiquitous oil and gas fields, geothermal fields, because of their phased production lifetimes, also may offer many abandoned wellbores that could be used for other purposes, often near currently productive geothermal resources. These existing fields offer an opportunity to decrease exploration and development uncertainty by leveraging data developed during prior field characterization, drilling, and production. They may also offer lower-cost deployment options for hybrid geothermal systems via redevelopment of existing well-field infrastructure

  4. A study of the Correlation between Leisure Time and Subjective Well-bieng of Urban Residents (2 nd half)---A Case Stud y of Residents in Hangzhou%休闲时间对城市居民幸福感的影响机制研究(下)*--以杭州市为例

    Institute of Scientific and Technical Information of China (English)

    蒋艳

    2016-01-01

    杭州城市居民休闲时间普遍偏少,只有离退休老年人休闲时间最为充裕;学历和收入越高者,休闲时间越少;带薪年休假制度也有待深入落实。城市居民幸福感普遍中等偏上,其中幸福感知度居中等偏上水平,生活满意度一般,正面情绪较多,负面情绪较少。幸福感随年龄增长而提升,女性、老人、已婚者和月收入上万者更感幸福。对休闲时间及其变化的认知影响幸福感。保障适度的休闲时间,可有效提升幸福感。%As a whole, residents except for the retired people in Hangzhou do not have much time enjoying leisure.The higher people’s education degree and income is, the less time they have to enjoy life.The an-nual paid holiday isn ’ t implemented very well in many walks of life .The author of this paper conducts a re-search on the sense of well -being among residents of Hangzhou and the findings are as follows :The sense of well-being of the residents is above average;The life satisfaction is average;Positive emotions prevail; The sense of well-being rises with the progress of age; Females, the old and the married people and those with a monthly earning of more than ten thousand Yuan are happier than the corresponding others .The individual ’s sense of well-being is influenced by his cognition of free time and its change , so the individual ’s sense of well-being can be effectively improved by ensuring moderate free time .

  5. Geopressured-geothermal well activities in Louisiana

    International Nuclear Information System (INIS)

    Since September 1978, microseismic networks have operated continuously around US Department of Energy (DOE) geopressured-geothermal well sites to monitor any microearthquake activity in the well vicinity. Microseismic monitoring is necessary before flow testing at a well site to establish the level of local background seismicity. Once flow testing has begun, well development may affect ground elevations and/or may activate growth faults, which are characteristic of the coastal region of southern Louisiana and southeastern Texas where these geopressured-geothermal wells are located. The microseismic networks are designed to detest small-scale local earthquakes indicative of such fault activation. Even after flow testing has ceased, monitoring continues to assess any microearthquake activity delayed by the time dependence of stress migration within the earth. Current monitoring shows no microseismicity in the geopressured-geothermal prospect areas before, during, or after flow testing

  6. Geopressured-geothermal well activities in Louisiana

    Energy Technology Data Exchange (ETDEWEB)

    John, C.J.

    1992-10-01

    Since September 1978, microseismic networks have operated continuously around US Department of Energy (DOE) geopressured-geothermal well sites to monitor any microearthquake activity in the well vicinity. Microseismic monitoring is necessary before flow testing at a well site to establish the level of local background seismicity. Once flow testing has begun, well development may affect ground elevations and/or may activate growth faults, which are characteristic of the coastal region of southern Louisiana and southeastern Texas where these geopressured-geothermal wells are located. The microseismic networks are designed to detest small-scale local earthquakes indicative of such fault activation. Even after flow testing has ceased, monitoring continues to assess any microearthquake activity delayed by the time dependence of stress migration within the earth. Current monitoring shows no microseismicity in the geopressured-geothermal prospect areas before, during, or after flow testing.

  7. Globalization and Social Well-being:

    DEFF Research Database (Denmark)

    Li, Xing; Muchie, Mammo

    and performance; and 3) to propose an alternative interdisciplinary approach to constructing well-being measures. The overall objective is to formulate conceptual framework and a fresh approach for ranking the different countries in the world not merely on the number of individually reckoned well......-going endeavours by many scholars in an attempt to contribute to the discussion of social well-being. It has three objectives: 1) to offer a framework of understanding the notion of well-being as essential part of social development; 2) to signify the limits of conventional measures of well-being attainment......The key theoretical incentive of this paper is to seek how Amartyr Sen’s contribution on the conceptualization of development is to be taken forward. Sen has brought us an appropriate starting point for further research with his broad alternative development thinking. This paper is part of the on...

  8. Financial Well-being in Active Ageing.

    Science.gov (United States)

    Rajola, Federico; Frigerio, Chiara; Parrichi, Monica

    2014-01-01

    In developed countries, economic and financial well-being is playing a crucial positive role in ageing and inclusion processes. Due to the complexity and pervasiveness of financial economy in the real life, more and more social as well as individual well-being are perceived as influenced by financial conditions. On the other hand, the demographic circumstances drive scholars as well as politicians to reflect on ageing dynamics. Bridging the two domains, the following research focuses on the role of the financial well-being as a mediating role of general well-being in elder people. The assumption is that elderly people have specific financial needs that sometimes are not covered by financial providers' offers. The motivation is mainly on the role of information asymmetries between elder consumers and financial institutions. On the dynamics of these asymmetries, the research will specifically investigate the role of financial literacy, as the ability of comprehension of elder people of their needs and of financial information. The applicative implication of this research work consists in finding the determinants of financial well-being for elders and the definition of their specific financial competencies, in order to 1) identify educational and regulatory guidelines for policy makers in charge of creating financial market transparency conditions, and to 2) support design of organizational mechanisms as well as financial product/services for this specific target of client. The following chapter presents preliminary explorative results of a survey delivered on 200 elder individuals (65-80 yrs.) leaving in Milan. Findings show that active elders consider the ability of managing personal wealth as one of the core determinant of well-being, although the economic and financial literacy is limited. Furthermore, the chapter proposes a research agenda for scholars interested in exploring the relationship between financial well-being and ageing. PMID:26630513

  9. Avaliação da flexibilidade pelo método do Flexômetro de Wells em crianças com Paralisia Cerebral submetidas a tratamento hidroterapêutico: estudo de casos = Flexibility evaluation by the method of Wells’ Flexometer in children with Cerebral Palsy submitted to hydrotherapy treatment: study of the cases

    Directory of Open Access Journals (Sweden)

    Vicente De Paula Antunes Teixeira

    2010-07-01

    Full Text Available Avaliar a flexibilidade da cadeia muscular posterior, utilizando o método proposto por Wells e Dillon, antes e após cada sessão de hidroterapia. Foi verificada a flexibilidade de três crianças com Paralisia Cerebral (PC diparéticas, com idades entre sete a dez anos. Os valores de flexibilidade foram aferidos, utilizando o Flexômetro de Wells. Houve aumento significativo da flexibilidade da cadeia muscular posterior dos pacientes após cada sessão de hidroterapia, tanto na avaliação em grupo quanto individual, assim como antes da primeira sessão de hidroterapia quando comparada com a última. O estudo sugere que a hidroterapia promove melhora da flexibilidade em relação à cadeia muscular posterior de crianças com PC diparéticas, pelo relaxamento global e consequente diminuição dotônus muscular, quando associada a exercícios de alongamentos passivos. To evaluate the flexibility of the posterior muscle chain using the method proposed by Wells and Dillon, before and after each hydrotherapy session. The study verified the flexibility of three children with diplegic cerebral palsy (CP, aged 7 to 10. The values of flexibility were measured using the Wells’ Flexometer. There was a significant increase in the flexibility of posterior muscle chain of the patients after each session of hydrotherapy, both in the individual evaluation and in the group, as well as before the first session of hydrotherapy compared to the last. The study suggests that hydrotherapy promotes the improvement of flexibility, by relaxation of muscle tone of children with diplegic CP, in relation to the posterior muscle chain, when combined with passive stretching exercises.

  10. Testing geopressured geothermal reservoirs in existing wells: Detailed completion prognosis for geopressured-geothermal well of opportunity, prospect #2

    Energy Technology Data Exchange (ETDEWEB)

    None

    1981-03-01

    A geopressured-geothermal test of Martin Exploration Company's Crown Zellerbach Well No. 2 will be conducted in the Tuscaloosa Trend. The Crown Zellerbach Well No. 1 will be converted to a saltwater disposal well for disposal of produced brine. The well is located in the Satsuma Area, Livingston parish, Louisiana. Eaton proposes to test the Tuscaloosa by perforating the 7 inch casing from 16,718 feet to 16,754 feet. The reservoir pressure at an intermediate formation depth of 16,736 feet is anticipated to be 12,010 psi and the temperature is anticipated to be 297 F. Calculated water salinity is 16,000 ppm. The well is expected to produce a maximum of 16,000 barrels of water a day with a gas content of 51 SCF/bbl. Eaton will re-enter the test well, clean out to 17,000 feet, run production casing and complete the well. The disposal well will be re-entered and completed in the 9-5/8 inch casing for disposal of produced brine. Testing will be conducted similar to previous Eaton annular flow WOO tests. An optional test from 16,462 feet to 16,490 feet may be performed after the original test and will require a workover with a rig on location to perform the plugback. The surface production equipment utilized on previous tests will be utilized on this test. The equipment has worked satisfactorily and all parties involved in the testing are familiar with its operation. Weatherly Engineering will operate the test equipment. The Institute of Gas Technology (IGT) and Mr. Don Clark will handle sampling, testing and reservoir engineering evaluation, respectively. wireline work required will be awarded on basis of bid evaluation. At the conclusion of the test period, the D.O.E. owned test equipment will be removed from the test site, the test and disposal wells plugged and abandoned and the sites restored to the satisfaction of all parties.

  11. Eating Well with Pleshette DeArmitt

    Directory of Open Access Journals (Sweden)

    Sarah Kathryn Marshall

    2015-12-01

    Full Text Available Written from a student’s perspective, this essay focuses on Pleshette’s engagement with Derrida in The Right to Narcissism: The Case for an Im-possible Self-Love and attests to the manner in which she lived this influence through her teaching and writing. 

  12. Well test analysis in fractured media

    Energy Technology Data Exchange (ETDEWEB)

    Karasaki, K.

    1987-04-01

    The behavior of fracture systems under well test conditions and methods for analyzing well test data from fractured media are investigated. Several analytical models are developed to be used for analyzing well test data from fractured media. Numerical tools that may be used to simulate fluid flow in fractured media are also presented. Three types of composite models for constant flux tests are investigated. These models are based on the assumption that a fracture system under well test conditions may be represented by two concentric regions, one representing a small number of fractures that dominates flow near the well, and the other representing average conditions farther away from the well. Type curves are presented that can be used to find the flow parameters of these two regions and the extent of the inner concentric region. Several slug test models with different geometric conditions that may be present in fractured media are also investigated. A finite element model that can simulate transient fluid flow in fracture networks is used to study the behavior of various two-dimensional fracture systems under well test conditions. A mesh generator that can be used to model mass and heat flow in a fractured-porous media is presented.

  13. Solitons and vortices in nonlinear potential wells

    International Nuclear Information System (INIS)

    We consider self-trapping of topological modes governed by the one- and two-dimensional (1D and 2D) nonlinear-Schrödinger/Gross–Pitaevskii equation with effective single- and double-well (DW) nonlinear potentials induced by spatial modulation of the local strength of the self-defocusing nonlinearity. This setting, which may be implemented in optics and Bose–Einstein condensates, aims to extend previous studies, which dealt with single-well nonlinear potentials. In the 1D setting, we find several types of symmetric, asymmetric and antisymmetric states, paying attention to scenarios of the spontaneous symmetry breaking. The single-well model is extended by including rocking motion of the well, which gives rise to Rabi oscillations between fundamental and dipole modes. Analysis of the 2D single-well setting gives rise to stable modes in the form of ordinary dipoles, vortex–antivortex dipoles (VADs), and vortex triangles (VTs), which may be considered as produced by spontaneous breaking of the axial symmetry. The consideration of the DW configuration in 2D reveals diverse types of modes built of components trapped in the two wells, which may be fundamental states and vortices with topological charges m = 1 and 2, as well as VADs (with m = 0) and VTs (with m = 2). (paper)

  14. Well-plate freeze-drying

    DEFF Research Database (Denmark)

    Trnka, Hjalte; Rantanen, Jukka; Grohganz, Holger

    2015-01-01

    , cake collapse and reconstitution time. Results: Samples freeze-dried in well-plates had an acceptable visual cake appearance. Solid form analysis by high throughput X-ray powder diffraction indicated comparable polymorphic outcome independent of the container. The expected increase in moisture level...... due to increasing amount of amorphous matter in the samples was observed in both vials and well plates. Cake collapse was found to be representative in well plates and could be effectively quantified using image analysis. Reconstitution time was also found to be equal in all three platforms. Finally...

  15. The nucleolus is well-posed

    Science.gov (United States)

    Fragnelli, Vito; Patrone, Fioravante; Torre, Anna

    2006-02-01

    The lexicographic order is not representable by a real-valued function, contrary to many other orders or preorders. So, standard tools and results for well-posed minimum problems cannot be used. We prove that under suitable hypotheses it is however possible to guarantee the well-posedness of a lexicographic minimum over a compact or convex set. This result allows us to prove that some game theoretical solution concepts, based on lexicographic order are well-posed: in particular, this is true for the nucleolus.

  16. Nevada Test Site Groundwater Well Rehabilitation Plan

    Energy Technology Data Exchange (ETDEWEB)

    David B. Hudson

    2006-12-01

    This plan describes actions to improve the utility and credibility of the Nevada Test Site (NTS) interim groundwater monitoring program. The two principal actions are: (1) well maintenance/rehabilitation activities and (2) the deployment of dedicated low-cost and reliable jack-pumps for groundwater sampling from deep monitoring wells. The scope of this proposal is to perform these actions on some number of nine selected wells (Figure 1) to evaluate whether these actions are achievable, practical, cost effective, and result in improved groundwater data quality.

  17. Analysis of system and methods for improved cementing of oil- and gas wells

    OpenAIRE

    Stensrud, Magnus

    2011-01-01

    Cement is a crucial part of well construction. If a good cement bond between the casing and well bore wall cannot be achieved in the primary cementing, expensive remedial cementing jobs or possible loss of the well bore can occur.When cementing casings and liners in deep waters or pressure depleted reservoirs there is often a small pressure margin between pore pressure and fracture pressure, this makes cement operations more complex. New cementing techniques and cements are being developed to...

  18. Well Completion Report for Well ER-20-11, Corrective Action Units 101 and 102: Central and Western Pahute Mesa

    Energy Technology Data Exchange (ETDEWEB)

    NSTec Environmental Management

    2013-02-27

    Well ER-20-11 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Management Operations Underground Test Area (UGTA) Activity at the Nevada National Security Site (formerly Nevada Test Site), Nye County, Nevada. The well was drilled in September 2012 as part of the Central and Western Pahute Mesa Corrective Action Unit Phase II drilling program. Well ER-20-11 was constructed to further investigate the nature and extent of radionuclidecontaminated groundwater encountered in two nearby UGTA wells, to help define hydraulic and transport parameters for the contaminated Benham aquifer, and to provide data for the UGTA hydrostratigraphic framework model. The 44.5-centimeter (cm) surface hole was drilled to a depth of 520.0 meters (m) and cased with 34.0-cm casing to 511.5 m. The hole diameter was then decreased to 31.1 cm, and the borehole was drilled to a total depth of 915.6 m. The hole was completed to allow access for hydrologic testing and sampling in the target aquifer, which is a lava-flow aquifer known as the Benham aquifer. The completion casing string, set to the depth of 904.3 m, consists of a string of 6 5/8-inch (in.) stainless-steel casing hanging from a string of 7 5/8-in. carbon-steel casing. The stainless-steel casing has one slotted interval at 796.3 to 903.6 m. One piezometer string was installed, which consists of 2 7/8-in. stainless-steel tubing that hangs from 2 3/8-in. carbon-steel tubing via a crossover sub. This string was landed at 903.8 m and is slotted in the interval 795.3 to 903.1 m. Data collected during and shortly after hole construction include composite drill cuttings samples collected every 3.0 m, various geophysical logs, fluid samples (for groundwater chemistry analysis and tritium measurements), and water-level measurements. The well penetrated 915.6 m of Tertiary volcanic rock, including one saturated lava flow aquifer. Measurements on

  19. Salt vulnerability assessment methodology for municipal supply wells

    Science.gov (United States)

    Betts, Andrew; Gharabaghi, Bahram; McBean, Ed; Levison, Jana; Parker, Beth

    2015-12-01

    De-icing agents containing chloride ions used for winter road maintenance have the potential to negatively impact groundwater resources for drinking water supplies. A novel methodology using commonly-available geospatial data (land use, well head protection areas) and public accessible data (salt application rates, hydrometric data) to identify salt vulnerable areas (SVAs) for groundwater wells is developed to prioritize implementation of better management practices for road salt applications. The approach uses simple mass-balance terms to collect chloride input from 3 pathways: surface runoff, shallow interflow and baseflow. A risk score is calculated, which depends on the land use within the respective municipal supply well protection area. Therefore, it is plausible to avoid costly and extensive numerical modeling (which also would bear many assumptions, simplifications and uncertainties). The method is applied to perform a vulnerability assessment on twenty municipal water supply wells in the Grand River watershed, Ontario, Canada. The calculated steady-state groundwater recharge chloride concentration for the supply wells is strongly correlated to the measured transient groundwater chloride concentrations in the case study evaluation, with an R2 = 0.84. The new method provides a simple, robust, and practical method for municipalities to assess the long-term risk of chloride contamination of municipal supply wells due to road salt application.

  20. Well Logging Equipment Updated in China

    Institute of Scientific and Technical Information of China (English)

    Xu Lili

    1996-01-01

    @@ As one of the ten principal disciplines in the petroleum industry, well logging has been developed for about 55years in China and is playing an increasingly important role in the country's oil and gas exploration and development.

  1. 76 FR 52599 - Anchorage Regulations; Wells, ME

    Science.gov (United States)

    2011-08-23

    ... Federal Register (73 FR 3316). Public Meeting We do not now plan to hold a public meeting. But, you may... Wells, Maine. All coordinates referenced use datum: NAD 83. Dated: Aug. 9, 2011. Daniel A. Neptun,...

  2. 76 FR 76295 - Anchorage Regulations; Wells, ME

    Science.gov (United States)

    2011-12-07

    ... rulemaking (NPRM) entitled ``Anchorage Regulations; Wells, Maine'' in the Federal Register (76 FR 52599). We..., Maine. All coordinates referenced use datum: NAD 83. Dated: November 21, 2011. Daniel A. Neptun,...

  3. Well cost estimates in various geothermal regions

    Energy Technology Data Exchange (ETDEWEB)

    Pierce, K.G.; Bomber, T.M. [Sandia National Labs., Albuquerque, NM (United States); Livesay, B.J. [Livesay Consultants, Encinitas, CA (United States)

    1997-06-01

    A project to estimate well costs in regions of current geothermal activity has been initiated. Costs associated with commonly encountered drilling problems will be included. Activity-based costing techniques will be employed to allow the identification of cost drivers and the evaluation of the economic effects of new technologies and operational procedures on well costs. The sensitivity of well costs to a number of parameters such as rate-of-penetration and daily operating costs will be examined. Additional sensitivity analyses and trade-off studies will evaluate the efficiency of various operational practices and preventive, as well as remedial, actions. These efforts should help provide an understanding of the consumption of resources in geothermal drilling.

  4. Redefining prosperity : delivering well-being

    OpenAIRE

    Sustainable Development Commission

    2004-01-01

    'Redefining prosperity : delivering well-being' was a workshop jointly convened by the Sustainable Development Commission, the Cabinet Office Strategy Unit and the Economic and Social Research Council Environment and Human Behaviour Programme. Publisher PDF

  5. Personality dimensions and subjective well-being.

    Science.gov (United States)

    Chico Librán, Eliseo

    2006-05-01

    This work examines the association between personality dimensions (extraversion and neuroticism) and subjective well-being. Subjective well-being is associated both with extraversion and neuroticism, and currently, neuroticism is generally considered the more important. A total of 368 students from the University of Rovira i Virgili completed the Extraversion and Neuroticism subscales of the revised Eysenck Personality Questionnaire (Eysenck, Eysenck, and Barrett, 1985), the Satisfaction with Life Scale (SWLS; Diener, Emmons, Larsen, and Griffin, 1985), and the Positive and Negative Affect Scale (Watson, Clark, and Tellegen, 1988). Regression analyses revealed the personality variable of neuroticism as one of the most important correlates of subjective well-being. Regression analyses also showed that 44% of the variance of subjective well-being was accounted for by neuroticism, whereas extraversion only explained 8% of the variance.

  6. Kaisten exploration well. Nagra deep drilling program

    International Nuclear Information System (INIS)

    The exploration well at Kaisten was realized as the fifth well within the Nagra Deep Drilling Program in Northern Switzerland. The drilling work was started February 13, 1984. Having reached the final depth of 1305.8 m on June 27, 1984, the test phase was initiated and completed by May 3, 1985. The well drilled approx. 300 m of sediments and approx. 1000 m of crystalline rock. Oriented cores were taken over the whole length of the well. The present report presents the drilling activities, civil construction work related to the site and precautions taken to account for environmental protection aspects. A chapter dealing with the commission representing members of the federal, cantonal and local authorities and about reporting is given at the end of this report

  7. CA Wellness Plan Data Reference Guide

    Data.gov (United States)

    U.S. Department of Health & Human Services — The purpose of the California Wellness Plan (CWP) Data Reference Guide (Reference Guide) is to provide access to the lowest-level data for each CWP Objective;...

  8. Lead and Drinking Water from Private Wells

    Science.gov (United States)

    ... type="submit" value="Submit" /> Healthy Water Home Lead and Drinking Water from Private Wells Recommend on ... remove lead from my drinking water? What is lead? Lead is a naturally occurring bluish-gray metal ...

  9. Teacher development and student well-being

    Directory of Open Access Journals (Sweden)

    Rebecca Winthrop

    2005-01-01

    Full Text Available Improved support for teachers’ professional development is vital during emergency, chronic crisis and early reconstruction contexts as teachers can have a significant impact on their students’ well-being.

  10. Translation of the “Taste” in Original Text A Case Study of the Two Chinese Translations of Hemmingway’ s A Clean, Well-lighted Place%论原文的“味道”之翻译--以海明威的短篇小说译文为例

    Institute of Scientific and Technical Information of China (English)

    张国耀

    2015-01-01

    翻译界有“译无定法”的说法,然而优秀译文总会有共同的特征———译出了原文的味道。译文从质量而言可分为三等:原文意思及味道均未有效传达;传达了原文的意思,但缺乏原文的味道;既译出了原文的意思,也译出原文的味道。显然,第三等级是最佳译作。分析海明威短篇小说A Clean, Well-lighted Place两种译文,表明文学翻译要译出原文味道必须具备强烈的语篇意识、敏锐的逻辑推理意识、扎实的双语语言功力及高超的双语转换技巧三项基本能力。%Although there is such a remark as “no definite method in translation ,” excellent translations will always contain some common features therein—rendering the taste of the original text .By commenting on the two translations of Hemmingway ’ s A Clean, Well-lighted Place, the author tries to prove that in literary translation , three basic abilities are necessary to render the taste of the original text , namely , strong sense of discourse , acute sense of logical deduction and sound bilingual foundation as well as high skills of bilingual shift .

  11. Overview - Be Smart. Be Well. STD Videos

    Centers for Disease Control (CDC) Podcasts

    2010-03-15

    This video, produced by Be Smart. Be Well., raises awareness of Sexually Transmitted Diseases (STDs): 1) What are they? 2) Why they matter? and, 3) What can I do about them? Footage courtesy of Be Smart. Be Well., featuring CDC's Dr. John Douglas, Division of Sexually Transmitted Disease Prevention.  Created: 3/15/2010 by National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention (NCHHSTP).   Date Released: 3/15/2010.

  12. Nuclear Spin Dynamics in Parabolic Quantum Wells

    OpenAIRE

    Tifrea, I.; Flatte, Michael E.

    2003-01-01

    We present a detailed analytical and numerical analysis of the nuclear spin dynamics in parabolic quantum wells. The shallow potential of parabolic quantum wells permits substantial modification of the electronic wave function in small electric fields. The nuclear spin relaxation via the hyperfine interaction depends on the electronic local density of states, therefore the local nuclear relaxation time depends sensitively on the electric field. For an inhomogeneous nuclear magnetization, such...

  13. Evolving Definitions of Mental Illness and Wellness

    OpenAIRE

    Tara W. Strine, MPH; Satvinder Dhingra, MPH; Lela R. McKnight-Eily, PhD; Carol D. Ryff, PhD; Elsie J. Freeman, MD, MPH; Ronald W. Manderscheid, PhD

    2009-01-01

    Understanding of the definitions of wellness and illness has changed from the mid-20th century to modern times, moving from a diagnosis-focused to a person-focused definition of mental illnesses, and from an “absence of disease” model to one that stresses positive psychological function for mental health. Currently, wellness refers to the degree to which one feels positive and enthusiastic about oneself and life, whereas illness refers to the presence of disease. These definitions apply to ph...

  14. Suomalainen Wellness-matkailutuote saksalaiselle matkailijalle

    OpenAIRE

    Kokko, Tuija

    2006-01-01

    Wellness saavuttaa suosiota korkean elintason maissa. Tämän ajattelumallin mukaan ihminen on itse oman hyvinvointinsa keskipisteessä ja hän voi vaikuttaa omaan terveyteensä huomioimalla tarpeitaan kokonaisvaltaisesti. Myös matkailualalla suuntaus on huomioitu useissa strategioissa, sillä wellness-matkailijat ovat taloudellisesti kannattava asiakasryhmä ja matkailun kasvupotentiaalia on erityisesti ulkomailla. Tämän toiminnallisen opinnäytetyön tavoitteeksi asetettiin rakentaa saksalaisille ma...

  15. Automated seismic-to-well ties?

    OpenAIRE

    Herrera, Roberto Henry; Van Der Baan, Mirko

    2012-01-01

    The quality of seismic-to-well tie is commonly quantified using the classical Pearson's correlation coefficient. However the seismic wavelet is time-variant, well logging and upscaling is only approximate, and the correlation coefficient does not follow this nonlinear behavior. We introduce the Dynamic Time Warping (DTW) to automate the tying process, accounting for frequency and time variance. The Dynamic Time Warping method can follow the nonlinear behavior better than the commonly used cor...

  16. San Bernardino National Wildlife Refuge Well 10

    Energy Technology Data Exchange (ETDEWEB)

    Ensminger, J.T.; Easterly, C.E.; Ketelle, R.H.; Quarles, H.; Wade, M.C.

    1999-12-01

    The U.S. Geological Survey (USGS), at the request of the U.S. Fish and Wildlife Service, evaluated the water production capacity of an artesian well in the San Bernardino National Wildlife Refuge, Arizona. Water from the well initially flows into a pond containing three federally threatened or endangered fish species, and water from this pond feeds an adjacent pond/wetland containing an endangered plant species.

  17. Constructing a systems psychodynamic wellness model

    OpenAIRE

    Sanchen Henning; Frans Cilliers

    2012-01-01

    Orientation: The researchers constructed a Systems Psychodynamic Wellness Model (SPWM) by merging theory and concepts from systems psychodynamics and positive psychology. They then refined the model for application in organisations during a Listening Post (LP) that comprised experienced subject experts.Research purpose: The purpose of the research was to construct and refine the SPWM in order to understand psychological wellness at the individual, group and organisational levels.Motivation fo...

  18. Gambaran Psychological Well-Being pada Lesbian

    OpenAIRE

    Angelina, Cindy

    2012-01-01

    In Indonesia, lesbians come into many challenges because its major society still believe that homosexual is a disorder behaviour and against religious norm. The belief leads to rejection, insults and condemnation . lack of knowledge about sexual orientation of lesbian causes many of lesbian tend to live in disguese, be isolated, depressed,etc. And eventually end up with poor Psychological Well-being. This descriptive research is intended to figure out the desciption of Psychological well-b...

  19. Description of calls from private well owners to a national well water hotline, 2013.

    Science.gov (United States)

    Ridpath, Alison; Taylor, Ethel; Greenstreet, Charlene; Martens, Margaret; Wicke, Heather; Martin, Colleen

    2016-02-15

    Water Systems Council (WSC) is a national, non-profit organization providing education and resources to private household well owners. Since 2003, WSC has provided wellcare®, a toll-free telephone hotline to answer questions from the public regarding well stewardship. In order to identify knowledge gaps regarding well stewardship among private well owners, we obtained data from WSC and reviewed calls made during 2013 to wellcare®. WSC records data from each wellcare® call-including caller information, primary reason for call, main use of well water, and if they were calling about a cistern, private well, shared well, or spring. We searched for calls with key words indicating specific contaminants of interest and reviewed primary reasons for calls. Calls classified as primarily testing-related were further categorized depending on whether the caller asked about how to test well water or how to interpret testing results. During 2013, wellcare® received 1100 calls from private well owners who were residents of 48 states. Among these calls, 87 (8%) mentioned radon, 83 (8%) coliforms, 51 (5%) chemicals related to fracking, 34 (3%) arsenic, and 32 (3%) nitrates key words. Only 38% of private well owners reported conducting any well maintenance activities, such as inspecting, cleaning, repairing the well, or testing well water, during the previous 12 months. The primary reason for calls were related to well water testing (n=403), general information relating to wells (n=249), contaminants (n=229), and well water treatment (n=97). Among calls related to testing, 319 had questions about how to test their well water, and 33 had questions about how to interpret testing results. Calls from private well owners to the wellcare® Hotline during 2013 identified key knowledge gaps regarding well stewardship; well owners are generally not testing or maintaining their wells, have questions about well water testing treatment, and concerns about well water contaminants. PMID

  20. National accounts of subjective well-being.

    Science.gov (United States)

    Diener, Ed; Oishi, Shigehiro; Lucas, Richard E

    2015-04-01

    Diener (2000) proposed that National Accounts of Well-Being be created to complement existing economic and social indicators that reflect the quality of life in nations. These national accounts can provide valuable information to policymakers and other leaders. Systematic measurement of subjective well-being provides novel information about the quality of life in societies, and it allows for the accumulation of detailed information regarding the circumstances that are associated with high subjective well-being. Thus, accounts of subjective well-being can help decision makers evaluate policies that improve societies beyond economic development. Progress with well-being accounts has been notable: Prestigious scientific and international institutions have recommended the creation of such national accounts, and these recommendations have been adopted in some form in over 40 nations. In addition, increasing research into policy-relevant questions reveals the importance of the accounts for policy. Psychologists can enlarge their role in the formulation and adoption of policies by actively studying and using accounts of subjective well-being to evaluate and support the policies they believe are needed.

  1. Evolving Definitions of Mental Illness and Wellness

    Directory of Open Access Journals (Sweden)

    Tara W. Strine, MPH

    2010-01-01

    Full Text Available Understanding of the definitions of wellness and illness has changed from the mid-20th century to modern times, moving from a diagnosis-focused to a person-focused definition of mental illnesses, and from an “absence of disease” model to one that stresses positive psychological function for mental health. Currently, wellness refers to the degree to which one feels positive and enthusiastic about oneself and life, whereas illness refers to the presence of disease. These definitions apply to physical as well as mental illness and wellness. In this article, we build on the essential concepts of wellness and illness, discuss how these definitions have changed over time, and discuss their importance in the context of health reform and health care reform. Health reform refers to efforts focused on health, such as health promotion and the development of positive well-being. Health care reform refers to efforts focused on illness, such as treatment of disease and related rehabilitation efforts.

  2. Characterization Well R-7 Geochemistry Report

    Energy Technology Data Exchange (ETDEWEB)

    P.Longmire; F.Goff

    2002-12-01

    This report provides analytical results for four groundwater-sampling rounds conducted at characterization well R-7. The goal of the characterization efforts was to assess the hydrochemistry and to determine if contaminants from Technical Area (TA)-2 and TA-21 of the Los Alamos National Laboratory (LANL or the Laboratory) are present in the regional aquifer in the vicinity of the well. Figure 1.0-1 shows the well's location in the narrow upper part of Los Alamos Canyon, between the inactive Omega West reactor and the mouth of DP Canyon. Well R-7 is in an excellent location to characterize the hydrology and groundwater chemistry in both perched groundwater and the regional aquifer near sites of known Laboratory effluent release, including radionuclides and inorganic chemicals (Stone et al. 2002, 72717). The Risk Reduction and Environmental Stewardship-Remediation (RRES-R) Program (formerly the Environmental Restoration [ER] Project) installed well R-7 as part of groundwater investigations to satisfy requirements of the ''Hydrogeologic Workplan'' (LANL 1998, 59599) and to support the Laboratory's ''Groundwater Protection Management Program Plan'' (LANL 1996, 70215). Well R-7 was designed primarily to provide geochemical or water quality and hydrogeologic data for the regional aquifer within the Puye Formation. This report also presents a geochemical evaluation of the analytical results for well R-7 and provides hydrogeochemical interpretations using analytical results for groundwater samples collected at the well. Discussion of other hydrogeochemical data collected within the east-central portion of the Laboratory, however, is deferred until they can be evaluated in the context of sitewide information collected from other RRES and Hydrogeologic Workplan characterization wells (R-8A, R-9, and R-9i). Once all deep groundwater investigations in the east-central portion of the Laboratory are completed, geochemical and

  3. Microscope Cells Containing Multiple Micromachined Wells

    Science.gov (United States)

    Turner, Walter; Skupinski, Robert

    2003-01-01

    Tech Briefs, May 2003 19 Manufacturing Microscope Cells Containing Multiple Micromachined Wells The cost per cell has been reduced substantially. John H. Glenn Research Center, Cleveland, Ohio An improved design for multiple-well microscope cells and an associated improved method of fabricating them have been devised. [As used here, "well" denotes a cavity that has a volume of about 1 or 2 L and that is used to hold a sample for examination under a microscope. As used here, "cell" denotes a laminate, based on a standard 1- by 3-in. (2.54- by 7.62-cm) microscope slide, that comprises (1) the slide as the lower layer, (2) an intermediate layer that contains holes that serve as the wells, and (3) a top layer that either consists of, or is similar to, a standard microscope-slide cover slip.] The improved design and method of fabrication make it possible to increase (relative to a prior design and method of fabrication) the number of wells per cell while reducing the fabrication loss and reducing the cost per cell to about one-tenth of the prior value. In the prior design and method, the slide, well, and cover-slip layers were made from silicate glass. The fabrication of each cell was a labor-intensive process that included precise cutting and grinding of the glass components, fusing of the glass components, and then more grinding and polishing to obtain desired dimensions. Cells of the prior design were expensive and fragile, the rate of loss in fabrication was high, and the nature of the glass made it difficult to increase the number of cells per well. Efforts to execute alternative prior designs in plastic have not yielded satisfactory results because, for typical applications, plastics are not sufficiently thermally or chemically stable, not sufficiently optically clear, and/or not hard enough to resist scratching. The figure depicts a cell of the present improved type. The slide and cover-slip layers are made of a low-thermal-expansion glass (Pyrex(TradeMark) or

  4. Selecting Aquifer Wells for Planned Gyroscopic Logging

    Energy Technology Data Exchange (ETDEWEB)

    Rohe, Michael James; Studley, Gregory Wayne

    2002-04-01

    Understanding the configuration of the eastern Snake River Plain aquifer's water table is made difficult, in part, due to borehole deviation in aquifer wells. A borehole has deviation if it is not vertical or straight. Deviation impairs the analysis of water table elevation measurements because it results in measurements that are greater than the true distance from the top of the well to the water table. Conceptual models of the water table configuration are important to environmental management decision-making at the INEEL; these models are based on measurements of depth to the water table taken from aquifer wells at or near the INEEL. When accurate data on the amount of deviation in any given borehole is acquired, then measurements of depth-to-water can be adjusted to reflect the true depth so more accurate conceptual models can be developed. Collection of additional borehole deviation data with gyroscopic logging is planned for selected wells to further our confidence in the quality of water level measurements. Selection of wells for the planned logging is based on qualitative and quantitative screening criteria. An existing data set from magnetic deviation logs was useful in establishing these criteria however, are considered less accurate than gyroscopic deviation logs under certain conditions. Population distributions for 128 aquifer wells with magnetic deviation data were used to establish three quantitative screening thresholds. Qualitative criteria consisted of administrative controls, accessibility issues, and drilling methods. Qualitative criteria eliminated all but 116 of the 337 aquifer wells, in the vicinity of the INEEL, that were initially examined in this screening effort. Of these, 72 have associated magnetic deviation data; 44 do not. Twenty-five (25) of the 72 wells with magnetic deviation data have deviation greater than one of the three quantitative screening thresholds. These 25 are recommended for the planned gyroscopic borehole deviation

  5. Problems in the wellbore integrity of a shale gas horizontal well and corresponding countermeasures

    Directory of Open Access Journals (Sweden)

    Zhonglan Tian

    2015-12-01

    Full Text Available In the Changning–Weiyuan national shale gas demonstration area, SW Sichuan Basin, the wellbore integrity damage occurs in some shale gas wells and has direct effect on the gas production rate of single shale gas horizontal well. After statistics analysis was performed on the problems related with wellbore integrity, such as casing damage, casing running difficulty and cement sheath blow-by, the multi-factor coupling casing stress calculation and evaluation mode laws established. Then study was conducted on the influential mechanism of multi-factor coupling (temperature effect, casing bending and axial pressure on casing damage. The shale slip mechanism and its relationship with casing sheared formation were analyzed by using the Mohr–Coulomb criterion. Inversion analysis was performed on the main controlling factors of casing friction by using the developed casing hook load prediction and friction analysis software. And finally, based on the characteristics of shale gas horizontal wells, wellbore integrity control measures were proposed in terms of design and construction process, so as to improve the drilling quality (DQ. More specifically, shale gas well casing design calculation method and check standard were modified, well structure and full bore hole trajectory design were optimized, drilling quality was improved, cement properties were optimized and cement sealing integrity during fracturing process was checked. These research findings are significant in the design and management of future shale gas borehole integrity.

  6. In situ bioremediation via horizontal wells

    International Nuclear Information System (INIS)

    The test consisted of methane mixed with air into the contaminated aquifer via a horizontal well and extraction from the vadose zone via a parallel horizontal well. This configuration has the advantage of simultaneously stimulating methanotrophic activity in both the groundwater and vadose zone, and inhibiting spread of the contaminant plume. Groundwater was monitored biweekly from 13 wells for a variety of chemical and microbiological parameters. Groundwater from wells in affected areas showed increases in methanotrophs of more than 1 order of magnitude every 2 weeks for several weeks after 1% methane-in-air injection was started. Some wells had increases as much as 7 orders of magnitude. Simultaneous with the increase in methanotrophs was a decrease in water and soil gas concentrations of trichloroethylene (TCE) and tetrachloroethane (PCE). Two wells declined in TCE/PCE concentration in the water by more than 90% to below 2 ppb. All of the wells in the affected zone showed significant decreases in contaminants in less than one month. Chloride concentrations in the water were inversely correlated with TCE/PCE concentration. Four of five vadose zone piezometers declined from concentration as high as 10,000 ppm to less than 5 ppm in less than 6 weeks. The fifth cluster also declined by more than 95%. After only three months on injection, a decline in TCE/PCE in the sediment of more than 30% was also observed, with TCE/PCE being undetectable in most sediments at the end of the 14-month test. Gene probes and direct isolation from the water and sediment revealed that the right types of methanotrophs were being stimulated and that isolates could degrade TCE at a high rate

  7. Helical Fields Possessing Mean Magnetic Wells

    International Nuclear Information System (INIS)

    Recently Furth and Rosenbluth pointed out that a particular magnetic field having helical symmetry could provide a mean magnetic well, that is provide regions in which ∫dℓ/B decreases away from a magnetic axis (or equivalently a region in which V'' is negative). In this paper we examine helical fields in general and the circumstances in which they may exhibit the negative V'' property. This investigation is made possible by the use of the stream function formalism which provides a simple picture of the field geometry, The existence of negative V'' is related to the topology of the magnetic surfaces which in turn is connected with the positions of the stationary points of the stream function ψ. Detailed calculations are given of the shape of the flux surfaces and of the shape of the magnetic well (the variation of ∫dℓ/B across it) for several examples of helical fields. These include the Furth-Rosenbluth configuration and a new configuration which provides a mean magnetic well without the necessity for a central conductor. A survey is also made of the magnetic well properties of these two classes of helical field in terms of two simple criteria: (1) the ratio Q of the field strength on the axis and on the separatrix (which provides an estimate of the overall well depth); and (2) the value of V'' on the magnetic axis (which provides a measure of the ''curvature'' of the well). This latter quantity is calculated analytically by using a general expression for the value of V'' on an arbitrary magnetic axis; It is pointed out that Q alone does not provide a realistic indication of the well shape. (author)

  8. Constructing a systems psychodynamic wellness model

    Directory of Open Access Journals (Sweden)

    Sanchen Henning

    2012-01-01

    Full Text Available Orientation: The researchers constructed a Systems Psychodynamic Wellness Model (SPWM by merging theory and concepts from systems psychodynamics and positive psychology. They then refined the model for application in organisations during a Listening Post (LP that comprised experienced subject experts.Research purpose: The purpose of the research was to construct and refine the SPWM in order to understand psychological wellness at the individual, group and organisational levels.Motivation for the study: There is no psychological wellness model that integrates the principles of systems psychodynamics and positive psychology. Systems psychodynamics traditionally focuses on so-called negative behaviour whilst positive psychology tends to idealise positive behaviour. This research tried to merge these views in order to apply them to individual, group and organisational behaviour.Research design, approach and method: The researchers used qualitative, descriptive and conceptual research. They conducted an in-depth literature study to construct the model. They then refined it using the LP.Main findings: The researchers identified 39 themes. They categorised them into three different levels. Three first-level themes emerged as the highest level of integration: identity, hope and love. The nine second-level themes each consisted of three more themes. They were less complex and abstract than the first-level themes. The least complex 27 third-level themes followed.Practical/managerial implications: One can apply the SPWM as a qualitative diagnostic tool for understanding individual, group and organisational wellness and for consulting on systemic wellness.Contribution/value-add: The SPWM offers a model for understanding individual, group and organisational wellness and for consulting on systemic wellness.

  9. Groundwater quality in the Indian Wells Valley, California

    Science.gov (United States)

    Dawson, Barbara J. Milby; Belitz, Kenneth

    2012-01-01

    Indian Wells Valley are completed to depths between 240 and 800 feet (73 to 244 meters), consist of solid casing from the land surface to a depth of 180 to 260 feet (55 to 79 meters), and are screened or perforated below the solid casing.

  10. Community Well-Being in Biocultural Landscapes : Are We Living Well?

    NARCIS (Netherlands)

    Verschuuren, B.; Subramanian, S.M.; Hiemstra, W.

    2014-01-01

    There is a growing recognition that living well must go beyond economic and material plenty to encompass social and spiritual well-being. But what do we understand by these wider aspects of well-being? Community Well-being in Biocultural Landscapes provides an introduction to the concept of human we

  11. Entiat 4Mile WELLs Completion Report, 2006.

    Energy Technology Data Exchange (ETDEWEB)

    Malinowksi, Richard

    2007-01-01

    The Entiat 4-mile Wells (Entiat 4-mile) project is located in the Entiat subbasin and will benefit Upper Columbia steelhead, spring Chinook and bull trout. The goal of this project is to prevent juvenile fish from being diverted into an out-of-stream irrigation system and to eliminate impacts due to the annual maintenance of an instream pushup dam. The objectives include eliminating a surface irrigation diversion and replacing it with two wells, which will provide Bonneville Power Administration (BPA) and the Bureau of Reclamation (Reclamation) with a Federal Columbia River Power System (FCRPS) BiOp metric credit of one. Wells were chosen over a new fish screen based on biological benefits and costs. Long-term biological benefits are provided by completely eliminating the surface diversion and the potential for fish entrainment in a fish screen. Construction costs for a new fish screen were estimated at $150,000, which does not include other costs associated with implementing and maintaining a fish screening project. Construction costs for a well were estimated at $20,000 each. The diversion consisted of a pushup dam that diverted water into an off-channel pond. Water was then pumped into a pressurized system for irrigation. There are 3 different irrigators who used water from this surface diversion, and each has multiple water right claims totaling approximately 5 cfs. Current use was estimated at 300 gallons per minute (approximately 0.641 cfs). Some irrigated acreage was taken out of orchard production less than 5 years ago. Therefore, approximately 6.8 acre-feet will be put into the State of Washington Trust Water Right program. No water will be set aside for conservation savings. The construction of the two irrigation wells for three landowners was completed in September 2006. The Lower Well (Tippen/Wick) will produce up to 175 gpm while the Upper Well (Griffith) will produce up to 275 gpm during the irrigation season. The eight inch diameter wells were

  12. Completion Report for Well ER-EC-5

    Energy Technology Data Exchange (ETDEWEB)

    Bechtel Nevada

    2004-10-01

    Well ER-EC-5 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. This well was drilled in the summer of 1999 as part of the U.S. Department of Energy's hydrogeologic investigation program in the Western Pahute Mesa - Oasis Valley region just west of the Nevada Test Site. A 44.5-centimeter surface hole was drilled and cased off to a depth of 342.6 meters below ground surface. The borehole diameter was then decreased to 31.1 centimeters for drilling to a total depth of 762.0 meters. One completion string with three isolated slotted intervals was installed in the well. A preliminary composite, static water level was measured at the depth of 309.9 meters, 40 days after installation of the completion string. Detailed lithologic descriptions with stratigraphic assignments are included in the report. These are based on composite drill cuttings collected every 3 meters, and 18 sidewall samples taken at various depths below 349.6 meters, supplemented by geophysical log data and results from detailed chemical and mineralogical analyses of rock samples. The well penetrated Tertiary-age tuffs of the Thirsty Canyon Group, caldera moat-filling sedimentary deposits, lava of the Beatty Wash Formation, and landslide breccia and tuffs of the Timber Mountain Group. The well reached total depth in welded ashflow tuff of the Ammonia Tanks Tuff after penetrating 440.1 meters of this unit, which is also the main water-producing unit in the well. The geologic interpretation of data from this well constrains the western margin of the Ammonia Tanks caldera to the west of the well location.

  13. Solitons and vortices in nonlinear potential wells

    CERN Document Server

    Dror, Nir

    2015-01-01

    We consider self-trapping of topological modes governed by the one- and two-dimensional (1D and 2D) nonlinear-Schrodinger/Gross-Pitaevskii equation with effective single- and double-well (DW) nonlinear potentials induced by spatial modulation of the local strength of the self-defocusing nonlinearity. This setting, which may be implemented in optics and Bose-Einstein condensates, aims to extend previous studies, which dealt with single-well nonlinear potentials. In the 1D setting, we find several types of symmetric, asymmetric and antisymmetric states, focusing on scenarios of the spontaneous symmetry breaking. The single-well model is extended by including rocking motion of the well, which gives rise to Rabi oscillations between the fundamental and dipole modes. Analysis of the 2D single-well setting gives rise to stable modes in the form of ordinary dipoles, vortex-antivortex dipoles (VADs), and vortex triangles (VTs), which may be considered as produced by spontaneous breaking of the axial symmetry. The con...

  14. Religiosity and psychological well-being.

    Science.gov (United States)

    Leondari, Angeliki; Gialamas, Vasilios

    2009-08-01

    The aim of the present study was to investigate the relationship between religiosity and psychological well-being in a sample of Greek Orthodox Christians. Previous research has documented that personal devotion, participation in religious activities, and religious salience are positively associated with different criteria of psychological well-being. The sample (83 men and 280 women) with an age range from 18 to 48 years, was strongly skewed with respect to sex (77% female) and education level (95% were university students or university graduates). Religiosity was operationalized as church attendance, frequency of prayer and belief salience. In addition, a single item referring to beliefs about God was used. Depression, anxiety, loneliness, and general life satisfaction were selected as dependent variables because they reflect important dimensions of psychological well-being. Preliminary analyses showed that sex was significantly related to the three religiosity variables (church attendance, frequency of prayer, belief salience), with women being more religious than men. Consistent with previous research, correlations suggested that church attendance and belief salience were associated with better life satisfaction. The results of hierarchical regression analysis showed a significant positive association between anxiety and frequency of personal prayer. Finally, personal beliefs about God did not seem to relate to any of the psychological well-being measures. The results of the present study partially support the hypothesized association between religiosity and psychological well-being.

  15. 农业院校硕士研究生幸福感影响因素分析——以江西农业大学为例%The Well-being of Postgraduates at Agricultural Universities: A Case Study of Jiangxi Agricultural University

    Institute of Scientific and Technical Information of China (English)

    温忠文; 施浩杰; 傅琼

    2012-01-01

    通过运用AMOS软件,对江西农业大学在读硕士研究生的幸福感现状调查数据进行分析,得到测量模型的路径图。发现影响硕士研究生幸福感的主要因素包括:个性因素、人际交往因素、学业期待因素、专业因素、学校因素、就业因素、家庭因素等,其中就业因素与个性因素对研究生幸福感的影响最大。为此,农业院校应加强培养硕士研究生就业能力.努力拓展就业渠道;把握硕士研究生群体个性特征,引导学生完善自我个性;建立研究生心理健康档案.引导学生健康发展。%The survey data on the well-being of postgraduates at Jiangxi Agricultural University was studied with software AMOS and a path diagram of the measurement model was obtained. The result showed that the factors influencing their well-being include: personality, ,interpersonal relationship, achievement expectation, specialty, university, employment, family background, etc. among which employment and personality are the most influential. Therefore, the university should train their employment skills and strengths and expand the channels of launching graduates into their future careers. At the same time, the university should be aware of their group characteristics, develop their personality and set up the mental health archives for their all-round personal development.

  16. COMPLETION REPORT FOR WELL CLUSTER ER-5-3

    Energy Technology Data Exchange (ETDEWEB)

    BECHTEL NEVADA

    2005-12-01

    Well Cluster ER-5-3 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. This cluster of 3 wells was drilled in 2000 and 2001 as part of a hydrogeologic investigation program in Frenchman Flat. The first borehole in the cluster, Well ER-5-3, was drilled in February and March 2000. A 47.0-centimeter surface hole was drilled and cased off to the depth of 374.8 meters. The hole diameter was decreased to 31.1 centimeters for drilling to a total depth of 794.3 meters within welded ash-flow tuff. A piezometer string with 1 slotted interval was installed in the annulus of the surface casing, open to the saturated alluvium. A completion string with 2 slotted intervals was installed in the main hole, open to saturated alluvium and to the welded tuff aquifer. A second piezometer string with 1 slotted interval open to the welded-tuff aquifer was installed outside the completion string. Well ER-5-3 No.2 was drilled about 30 meters west of the first borehole in March 2000, and was recompleted in March 2001. A 66.0-centimeter hole was drilled and cased off to the depth of 613.8 meters. The hole diameter was decreased to 44.5 centimeters and the borehole was drilled and cased off to the depth of 849.0 meters. The hole diameter was decreased once more to 31.1 centimeters for drilling to a total depth of 1,732.2 meters in dolomite. A completion string open to the dolomite (lower carbonate aquifer) was installed. Well ER-5-3 No.3 was drilled approximately 30 meters north of the first 2 boreholes in February 2001. A 66.0-centimeter hole was drilled and cased off to the depth of 36.6 meters, then the main 25.1-centimeter-diameter hole was drilled to a total depth of 548.6 meters in alluvium. A slotted stainless-steel tubing string was installed in the saturated alluvium. A preliminary composite, static water level was measured at

  17. New trends of wellness services and their use in WELLNESS HOTEL FRYMBURK

    OpenAIRE

    CHOCHOLATÁ, Soňa

    2013-01-01

    This thesis deals with wellness section of Wellness Hotel Frymburk. The aim is to analyze existing products of wellness services,recommendations for further development based on actual world trends. Another important task is the comparison of accommodation facilities in the designated location offering wellness services. There will be also included analysis of customer needs and their satisfaction with the current portfolio offer of wellness services. The information will be discussed with th...

  18. New Approach to Purging Monitoring Wells: Lower Flow Rates Reduce Required Purging Volumes and Sample Turbidity

    Science.gov (United States)

    It is generally accepted that monitoring wells must be purged to access formation water to obtain “representative” ground water quality samples. Historically anywhere from 3 to 5 well casing volumes have been removed prior to sample collection to evacuate the standing well water...

  19. Understanding, Evidencing, and Promoting Adolescent Well-Being: An Emerging Agenda for Schools

    Science.gov (United States)

    Matthews, Nic; Kilgour, Lindsey; Christian, Polly; Mori, Kate; Hill, Denise M.

    2015-01-01

    The well-being of young people is of considerable concern with many initiatives targeting the health behaviors of this population. Educators are among the professional groups being challenged to understand, evidence, and enhance childhood well-being. Working with a case study U.K. school adolescent subjective well-being (SWB) was examined through…

  20. Eating habits and subjective well-being

    DEFF Research Database (Denmark)

    Schnettler, Berta Lorena; Miranda, Horacio; Lobos, Germán;

    2015-01-01

    The purpose of this study was to distinguish and characterize university student typologies according to their life satisfaction and satisfaction with their food-related life. An online survey was applied between June and August 2013 in five state universities in Chile, to 369 university students...... with higher levels of life satisfaction and satisfaction with food-related life live with their parents, eat at home more frequently, report fewer health problems, have healthful eating habits and consider food very important for their well-being. Although it is necessary to promote or improve the campaigns...... (mean age = 20.9 years, SD = 2.27). The survey included the Health-related Quality of Life Index-4 (HRQOL), Satisfaction with Life Scale (SWLS), Satisfaction with Food-related Life Scale (SWFL), as well as questions about the place of residence, importance of food for well-being, frequency of meals...

  1. Design considerations for heated wells in gloveboxes

    International Nuclear Information System (INIS)

    Heated wells in gloveboxes have been used for many years by the Argonne National Laboratory Chemical Technology Division for nuclear-technology, waste-management, chemical-technology, and analytical-chemistry research. These wells allow experiments to be isolated from the main working volume of the glovebox. In addition, wells, when sealed, allow experiments to be conducted under pressurized or vacuum conditions. Until recently, typical maximum operational temperatures were about 500 C. However, more recent research is requiring operational temperatures approaching 900 C. These new requirements pose interesting design challenges that must be resolved. Some problem areas include temperature effects on material properties, maintaining a seal, cooling selected areas, and minimizing stresses. This paper discusses issues related to these design challenges and the ways in which these issues have been resolved

  2. HORIZONTAL WELL DRILL-IN FLUIDS

    Directory of Open Access Journals (Sweden)

    Nediljka Gaurina-Međimurec

    1998-12-01

    Full Text Available Main objective of horizontal driling is to place a drain-hole for a long distance within the pay zone to enhance productivity or injectivity. In drilling horizontal wells, more serious problems appear than in drilling vertical wells. These problems are: poor hole cleaning, excessive torque and drag, hole filling, pipe stucking, wellbore instability, loss of circulation, formation damage, poor cement job, and difficulties at logging jobs. From that reason, successful drilling and production of horizontal well depends largely on the fluid used during drilling and completion phases. Several new fluids, that fulfill some or all of required properties (hole cleaning, cutting suspension, good lubrication, and relative low formation damage, are presented in this paper.

  3. Analytical chemistry of oil well treating chemicals

    Energy Technology Data Exchange (ETDEWEB)

    Maddin, C.M.; Loop, V.R.

    1973-01-01

    Chemical reactions in an oil reservoir are often an unknown and can only be simulated in the laboratory. One aid in correlating downhole reactions with lab tests is analysis of returned treating fluids from the reservoir. Analytical chemistry provides powerful tools for monitoring oil-well treating chemicals. Visible absorption spectro-photometry provides methods for cationic, anionic, and nonionic surfactants as well as for acrylate- and phosphorus-based scale inhibitors. It is useful for measuring sequestrant concentrations from their reactions with metal ions, alcohols by chromate reduction, arsenic-based acidizing inhibitors, nitrogen-based downhole inhibitors, polyacrylamide- and carbohydrate-based fracturing and diverting chemicals. Ultraviolet spectrophotometry is well suited to the measurement of cement-setting retarder concentrations and organic acidizing inhibitors. Gas-liquid chromatography measures nonreactive solvent concentrations and acetylenic alcohols used in acidizing inhibitors. (21 refs.)

  4. Electronic Quantum Confinement in Cylindrical Potential Well

    CERN Document Server

    Baltenkov, A S

    2016-01-01

    The effects of quantum confinement on the momentum distribution of electrons confined within a cylindrical potential well have been analyzed. The motivation is to understand specific features of the momentum distribution of electrons when the electron behavior is completely controlled by the parameters of a non-isotropic potential cavity. It is shown that studying the solutions of the wave equation for an electron confined in a cylindrical potential well offers the possibility to analyze the confinement behavior of an electron executing one- or two-dimensional motion in the three-dimensional space within the framework of the same mathematical model. Some low-lying electronic states with different symmetries have been considered and the corresponding wave functions have been calculated; the behavior of their nodes and their peak positions with respect to the parameters of the cylindrical well has been analyzed. Additionally, the momentum distributions of electrons in these states have been calculated. The limi...

  5. Strained quantum well photovoltaic energy converter

    Science.gov (United States)

    Freundlich, Alexandre (Inventor); Renaud, Philippe (Inventor); Vilela, Mauro Francisco (Inventor); Bensaoula, Abdelhak (Inventor)

    1998-01-01

    An indium phosphide photovoltaic cell is provided where one or more quantum wells are introduced between the conventional p-conductivity and n-conductivity indium phosphide layer. The approach allows the cell to convert the light over a wider range of wavelengths than a conventional single junction cell and in particular convert efficiently transparency losses of the indium phosphide conventional cell. The approach hence may be used to increase the cell current output. A method of fabrication of photovoltaic devices is provided where ternary InAsP and InGaAs alloys are used as well material in the quantum well region and results in an increase of the cell current output.

  6. Impurity binding energy for -doped quantum well structures

    Indian Academy of Sciences (India)

    V Tulupenko; C A Duque; R Demediuk; O Fomina; V Akimov; V Belykh; T Dmitrichenko; V Poroshin

    2014-10-01

    The binding energy of an impurity delta layer situated either in the centre or at the edge of a quantum well (QW) is theoretically considered for the example of -type Si0.8Ge0.2/Si/Si0.8Ge0.2 QW doped with phosphorus. Calculations are made for the case of not so big impurity concentrations, when impurity bands are not yet formed and it is still possible to treat impurity as isolated ones. It is shown on the base of self-consistent solution of Schrödinger, Poisson and electro-neutrality equations that impurity binding energy is dependent on the degree of impurity ionization and the most noticeably for the case of edge-doped QWs.

  7. Investigation of well redevelopment techniques for the MWD Well Field, Savannah River Site, South Carolina

    International Nuclear Information System (INIS)

    Clemson University, in cooperation with the Savannah River Site (SRS) is investigating well treatment techniques at the Mixed Waste Disposal (MWD) Well Field at SRS. This well field consists of fifteen wells screened in three aquifers with a downward trending head gradient. Based on aquifer performance tests of the MWD wells, it has been determined that many of the wells exhibit low well efficiencies and high skin factors, indicative of damaged wells. Bacterial investigations show that the biological activity in these wells is low, probably due to a high pH environment. Evaluation of the Calcite Saturation Index for each well indicates that nearly all of the MWD wells have the potential for precipitating calcite and calcite deposits have been observed on downhole equipment. The calcite deposits may occur due to the dissolution of the grout mixtures by waters infiltrating down the well annulus driven by the downward head gradient with subsequent precipitation of calcite in the higher pH sand pack. Well rehabilitation techniques currently under investigation include acidification, hydraulic fracturing and traditional physical methods. In addition to treating the wells at MWD, the authors plan to perform aquifer performance tests and evaluate post-treatment skin factors. Further research into the long term effects of well treatment will be conducted, focusing on long term chemical changes brought about by the treatments

  8. Pseudo energy wells in active systems

    CERN Document Server

    Sheshka, Raman; Truskinovsky, Lev

    2015-01-01

    Active stabilization in systems with zero or negative stiffness is an essential element of a wide variety of biological processes. We study a prototypical example of this phenomenon at a micro-scale and show how active rigidity, interpreted as a formation of a pseudo-well in the effective energy landscape, can be generated in an overdamped ratchet-type stochastic system. We link the transition from negative to positive rigidity with correlations in the noise and show that subtle differences in out-of-equilibrium driving may compromise the emergence of a pseudo-well.

  9. The WHO-5 Well-Being Index

    DEFF Research Database (Denmark)

    Topp, C W; Østergaard, S D; Soendergaard, S;

    2015-01-01

    BACKGROUND: The 5-item World Health Organization Well-Being Index (WHO-5) is among the most widely used questionnaires assessing subjective psychological well-being. Since its first publication in 1998, the WHO-5 has been translated into more than 30 languages and has been used in research studies...... the predefined criteria for inclusion in the review. The review demonstrated that the WHO-5 has high clinimetric validity, can be used as an outcome measure balancing the wanted and unwanted effects of treatments, is a sensitive and specific screening tool for depression and its applicability across study fields...

  10. Fugitive gas emissions from oil and gas wells

    International Nuclear Information System (INIS)

    Field and laboratory studies were conducted on the methane emissions from oil and gas wells in the Lloydminster (Alberta and Saskatchewan) area. Measured surface casing vent leakage rates were found to vary from 0.01 to ca 200 m3/d, with no consistent variation in flow throughout the year. Soil gas migration was directly measured using a surface emission flux chamber. Measurements showed that soil gas leakage rates are mostly less than 0.1 m3/d, and no wells were found with methane leakage greater than 30 m3/d. Numerical modelling and lab experiments were used to help understand and extend the direct field measurements. Although the distribution of methane in soil gas correlated with leakage rate, the relationship is confounded by the oxidation of methane by soil bacteria. The data collected show that most of the wells in question have leakage rates which are similar in magnitude to many other accepted methane emission sources. If regulatory bodies accept this conclusion, current requirements to completely stop all leakage could be relaxed, thereby allowing reclamation and abandonment of hundreds of wells, saving millions in lease costs and future liabilities, and enabling financial and human resources to be focused on achieving the most significant environmental improvements. The measurement methods developed in this study have proved to be both efficient for field use and reliable, thus providing a practical tool for selecting wells which need to be repaired and for confirming the success of repair procedures. 27 refs., 15 figs., 17 tabs

  11. Well Waters Fluoride in Enugu, Nigeria

    Directory of Open Access Journals (Sweden)

    EI Ugwuja

    2012-03-01

    Full Text Available Abnormal fluoride levels in drinking water have been associated with adverse health effects. To determine the fluoride content of well waters in Enugu, southeastern Nigeria, water samples from 50 artisan wells chosen by multistage sampling procedure from the 5 zones of Enugu municipality were analyzed in duplicates for their fluoride content. The zonal mean values were 0.60, 0.70, 0.62, 0.62, and 0.63 mg/L for Abakpa Nike, Achara Layout, Obiagu/ Ogui, Trans Ekulu and Uwani, respectively (p<0.05. The mean value for the whole city was 0.63 mg/L. Although, the mean level of fluoride recorded in this study is currently within safe limits (1.5 mg/L, WHO 2011, it is important to monitor continuously the fluoride content of well waters in the municipality in view of the increasing industrial activities going on in the city and heavy reliance on well water for domestic purposes and the widespread use of consumer products containing fluoride.

  12. Read Well. What Works Clearinghouse Intervention Report

    Science.gov (United States)

    What Works Clearinghouse, 2006

    2006-01-01

    "Read Well" is a research-based reading curriculum designed to improve student literacy. This program includes explicit, systematic instruction in English decoding, sustained practice of decoding skills and fluency, and instruction in vocabulary and concepts presented in text. It also provides support for English language learner (ELL) students…

  13. Well-differentiated liposarcoma of esophagus

    Institute of Scientific and Technical Information of China (English)

    YANG Bin; SHI Pei-zhi; LI Xiao; XU Ru-jun

    2006-01-01

    @@ Gastrointestinal liposarcoma is rare, and the esophagus is the. least common location at which this kind of liposarcoma may occur. We reported a patient with a well-differentiated liposarcoma of esophagus, and discussed the diagnostic utility of these imaging techniques in patient management.

  14. Assessment of Wellness in Upward Bound Students.

    Science.gov (United States)

    Owen, T. Ross

    1997-01-01

    A study investigated the validity and reliability of a new instrument for assessing the wellness lifestyles of Upward Bound students. Subjects were 42 students from five high schools using the program. The study examined 14 variables, including total scores, 10 subscales, and three demographic variables (age, race, gender), and concluded that the…

  15. Use of Select Nutrients to Foster Wellness.

    Science.gov (United States)

    Cassel, Russell N.

    1987-01-01

    Discusses how to be healthy through one's diet. Lists 20 nutrients necessary for one's well being and explains role of each nutrient. Describes how nutrients complement one another and asserts that the right combination of nutrients can sometimes substitute for medication. Also lists 20 diagnostic categories of problems and suggests nutrients to…

  16. Eating Well As You Get Older

    Science.gov (United States)

    ... help with constipation. Make One Change at a Time Eating well isn't just a "diet" or "program" that's here today and gone tomorrow. It is part of a healthy lifestyle that you can adopt now and stay with in the years to come. To eat healthier, you can begin by taking small steps, making ...

  17. Subjective Well-Being among University Students

    Science.gov (United States)

    Tuzgol Dost, Meliha

    2006-01-01

    The purpose of this study was to examine the relationship of subjective well-being to gender, perceived economic status, perceived parental attitudes, satisfaction with physical appearance, religious belief, and locus of control among university students. The sample of the study consisted of 700 university students of Hacettepe University during…

  18. Incentives, Choice, Education and Well-Being

    Science.gov (United States)

    Schwartz, Barry

    2009-01-01

    It is a truism that giving people multiple reasons to engage in some activity will increase the chances of that activity--that two reasons are better than one. It is another truism, in the developed, Western world, that more freedom brings more well-being, and that more choice brings more freedom. In education, these truisms have led to the use of…

  19. Author Profile: An Interview with Rosemary Wells.

    Science.gov (United States)

    Marantz, Sylvia; Marantz, Ken

    1999-01-01

    This interview with author and illustrator Rosemary Wells focuses on her picture books for children. Topics include reading aloud, saving and retelling the classics, influences on her work, page-design preferences, emotional content, the development process, working with other illustrators, and material from other cultures. (LRW)

  20. Psychopolitical Validity: Power, Culture, and Wellness

    Science.gov (United States)

    Fisher, Adrian T.; Sonn, Christopher C.

    2008-01-01

    In this commentary, the authors review and critique Prilleltensky's model of psychopolitical validity and wellness. Although the overt recognition of power, oppression, and political forces are viewed most favorably, cautions are also given. Of most importance is the way in which his model is based in an undeclared North American model of…

  1. Sports Drove Silva to Teach Wellness

    Science.gov (United States)

    Deschenie, Tina

    2008-01-01

    This article profiles teacher Leroy Silva (Laguna), 27, a.k.a. "Buster". Silva describes himself as an active guy who stays busy working out, playing basketball, softball, and more recently golf, soccer, and lacrosse. He teaches personal wellness and sports (not physical education), a job he began in 2006. Before that he was a trainer at the…

  2. JCE Resources for Chemistry: Health and Wellness

    Science.gov (United States)

    Jacobsen, Erica K.

    2004-01-01

    Many simple actions such as eating or reaching for a pain reliever, which we perform without thinking, are tied to chemistry. The American Chemical Society has capitalized on this ubiquitousness with their chosen theme for National Chemistry Week (NCW) 2004: "Health and Wellness."

  3. Wellness programs: a review of the evidence

    OpenAIRE

    Watt, D.; S Verma; Flynn, L.

    1998-01-01

    OBJECTIVE: To review studies that have examined an association between wellness programs and improvements in quality of life and to assess the strength of the scientific evidence. DATA SOURCES: A MEDLINE search was constructed with the following medical subject headings: "psychoneuroimmunology," "chronic disease" and "health promotion," "chronic disease" and "health behaviour," "relaxation techniques," "music therapy," "laughter," "anger," "mediation" and "behavioural medicine." Searches usin...

  4. Well Spoken: Teaching Speaking to All Students

    Science.gov (United States)

    Palmer, Erik

    2011-01-01

    All teachers at all grade levels in all subjects have speaking assignments for students, but many teachers believe they don't know how to teach speaking, and many even fear public speaking themselves. In his new book, "Well Spoken", veteran teacher and education consultant Erik Palmer shares the art of teaching speaking in any classroom. Teachers…

  5. Global Developments, Markets, and Well-being

    NARCIS (Netherlands)

    Arce, A.M.G.

    2015-01-01

    The relationship among global development, markets, and well-being is an important theoretical and methodologicalassociation to address and analyze theoretical ways of ‘value framing and talking’ among experts, institutions, and people.These relations may take the forms of interfaces, dislocations,

  6. Social networking for well-being

    NARCIS (Netherlands)

    Steen, M.G.D.; Aarts, O.A.J.; Broekman, C.C.M.T.; Prins, S.C.L.

    2011-01-01

    In this paper, we present some of the work that is being done in the WeCare project (in the AAL programme). The project’s goal is to introduce social networking services in the lives of older people, in order to improve their well-being. Participation in social networks, both online and ‘in real lif

  7. Homeownership and subjective well-being

    DEFF Research Database (Denmark)

    Bloze, Gintautas; Skak, Morten

    Favouring homeownership is an important part of housing policies in many countries. Although this may be explained by the preferences of the majority of voters, it may also be because homeownership is believed to have positive effects on individuals’ behaviour and welfare. Previous research seems...... and subjective well-being....

  8. Infrared Multiple-Quantum-Well Phototransistor

    Science.gov (United States)

    Borenstain, Shmuel I.

    1992-01-01

    Proposed npn AlxGa1-xAs phototransistor incorporates multiple-quantum-well (MQW) infrared photodetector. Has n-doped contacts and is embedded between p-doped base region and n-doped collector region of transistor. Photocurrent amplified, and dark current suppressed.

  9. Soft sensing for gas-lift wells

    NARCIS (Netherlands)

    Bloemen, H.H.J.; Belfroid, S.P.C.; Sturm, W.L.; Verhelst, F.J.P.C.M.G.

    2006-01-01

    This paper considers the use of extended Kalman filtering as a soft-sensing technique for gas lift wells. This technique is deployed for the estimation of dynamic variables that are not directly measured. Possible applications are the estimation of flow rates from surface and downhole pressure measu

  10. Does Globalization Affect Human Well-Being?

    Science.gov (United States)

    Tsai, Ming-Chang

    2007-01-01

    The prevailing theorizing of globalization's influence of human well-being suggests to assess both the favorable and unfavorable outcomes. This study formulates a dialectical model, adopts a comprehensive globalization measure and uses a three-wave panel data during 1980-2000 to empirically test direct and indirect effects of global flows' human…

  11. Dry Well Storage Facility conceptual design study

    International Nuclear Information System (INIS)

    The Dry Well Storage Facility described is assumed to be located adjacent to or near a Spent Fuel Receiving and Packaging Facility and/or a Packaged Fuel Transfer Facility. Performance requirements, quality levels and codes and standards, schedule and methods of performance, special requirements, quality assurance program, and cost estimate are discussed. Appendices on major mechanical equipment and electric power requirements are included

  12. Wave-packet dynamics in quantum wells

    DEFF Research Database (Denmark)

    Kuznetsov, A. V.; Sanders, G. D.; Stanton, C. J.

    1995-01-01

    It has been recently recognized that in bulk semiconductors the displacement current caused by ultrafast optical generation of ''polarized pairs'' in the applied de field is an important mechanism of charge transport in addition to the usual transport current. In quantum-well systems, this polari...

  13. Career Construction and Subjective Well-Being

    Science.gov (United States)

    Hartung, Paul J.; Taber, Brian J.

    2008-01-01

    Experienced happiness and reported life contentment represent cardinal elements of subjective well-being (SWB). Achieving happiness and contentment with work and other domains, such as love, play, and community, constitute fundamental life goals. Career construction offers a developmental theory of vocational behavior and a career assessment and…

  14. Spectroscopy of GaAs quantum wells

    Energy Technology Data Exchange (ETDEWEB)

    West, L.C.

    1985-07-01

    A new type of optical dipole transition in GaAs quantum wells has been observed. The dipole occurs between two envelope states of the conduction band electron wavefunction, and is called a quantum well envelope state transition (QWEST). The QWEST is observed by infrared absorption in three different samples with quantum well thicknesses 65, 82, and 92 A and resonant energies of 152, 121, and 108 MeV, respectively. The oscillator strength is found to have values of over 12, in good agreement with prediction. The linewidths are seen as narrow as 10 MeV at room temperature and 7 MeV at low temperature, thus proving a narrow line resonance can indeed occur between transitions of free electrons. Techniques for the proper growth of these quantum well samples to enable observation of the QWEST have also been found using (AlGa)As compounds. This QWEST is considered to be an ideal material for an all optical digital computer. The QWEST can be made frequency matched to the inexpensive Carbon Dioxide laser with an infrared wavelength of 10 microns. The nonlinearity and fast relaxation time of the QWEST indicate a logic element with a subpicosecond switch time can be built in the near future, with a power level which will eventually be limited only by the noise from a lack of quanta to above approximately 10 microwatts. 64 refs., 35 figs., 6 tabs.

  15. Subjective Well-Being Around Retirement

    NARCIS (Netherlands)

    Abolhassani, Marzieh; Alessie, Rob

    2013-01-01

    This paper studies the effect of both retirement and unemployment on life satisfaction, using subjective satisfaction indicators from the German Socio-Economic Panel. Moreover, we analyze how accurate individuals anticipate changes in satisfaction around retirement, as well as the correlation betwee

  16. Well-Being on Planet Earth

    Directory of Open Access Journals (Sweden)

    Ed Diener

    2009-12-01

    Full Text Available The Gallup World Poll allows a look at how humanity is flourishing, based on the answers of survey respondents sampled from across the globe. Several conclusions are clear. First, how people are doing depends enormously on the society in which they live, and nations vary from doing very well to extremely poorly. In terms of subjective well-being, nations vary greatly, in both judgments of overall life and in positive and negative emotions. The best predictors of global life judgments were income and ownership of modern conveniences, whereas the best predictors of emotions were social factors such as the control of corruption and being able to count on others, and personal factors such as learning new things and being able to control one’s day. Thus, the answer to the question of whether money makes people happy must be qualified by the measure of well-being that is being used. It is proposed that systematic measures of well-being across and within nations would allow individuals, leaders, and policy makers to make better decisions.

  17. The Subjective Well-Being of Parents.

    Science.gov (United States)

    Ishii-Kuntz, Masako; Ihinger-Tallman, Marilyn

    1991-01-01

    Using a national sample of Americans, compared effects of marital and parental status on three domains of well-being (marital quality, parental satisfaction, and global life satisfaction) by examining three types of parents: first-married biological parents, remarried biological parents, and stepparents. First-married biological parents reported…

  18. Neurocysticercosis with Diplopia Responds Well to Albendazole.

    Science.gov (United States)

    Sato, Akihiro; Nakamura, Itaru; Fujita, Hiroaki; Fukushima, Shinji; Mizuno, Yasutaka; Fujii, Takeshi; Matsumoto, Tetsuya

    2016-01-01

    We report a case of neurocysticercosis concurrent with taeniasis in a 31-year-old woman. The patient presented with a headache and diplopia. Oculomotor disturbances with a left adduction deficit were observed. Fundoscopy revealed papilledema. Additionally, computed tomography of the brain revealed more than 20 small cysts within the parenchyma, most of which were associated with ring enhancement. Moreover, serum antibody testing (Western blotting) for Taenia solium-cysticerci was positive. The patient received albendazole and corticosteroids, and progressive resolution of the neurological symptoms and papilledema was observed starting approximately three days after administration. This patient has been asymptomatic for more than one year. PMID:27150884

  19. Consortium for Petroleum & Natural Gas Stripper Wells

    Energy Technology Data Exchange (ETDEWEB)

    Morrison, Joel

    2011-12-01

    The United States has more oil and gas wells than any other country. As of December 31, 2004, there were more than half a million producing oil wells in the United States. That is more than three times the combined total for the next three leaders: China, Canada, and Russia. The Stripper Well Consortium (SWC) is a partnership that includes domestic oil and gas producers, service and supply companies, trade associations, academia, the Department of Energy’s Strategic Center for Natural Gas and Oil (SCNGO) at the National Energy Technology Laboratory (NETL), and the New York State Energy Research and Development Authority (NYSERDA). The Consortium was established in 2000. This report serves as a final technical report for the SWC activities conducted over the May 1, 2004 to December 1, 2011 timeframe. During this timeframe, the SWC worked with 173 members in 29 states and three international countries, to focus on the development of new technologies to benefit the U.S. stripper well industry. SWC worked with NETL to develop a nationwide request-for-proposal (RFP) process to solicit proposals from the U.S. stripper well industry to develop and/or deploy new technologies that would assist small producers in improving the production performance of their stripper well operations. SWC conducted eight rounds of funding. A total of 132 proposals were received. The proposals were compiled and distributed to an industry-driven SWC executive council and program sponsors for review. Applicants were required to make a formal technical presentation to the SWC membership, executive council, and program sponsors. After reviewing the proposals and listening to the presentations, the executive council made their funding recommendations to program sponsors. A total of 64 projects were selected for funding, of which 59 were fully completed. Penn State then worked with grant awardees to issue a subcontract for their approved work. SWC organized and hosted a total of 14 meetings

  20. Well limit behaviors of term rewriting systems

    Institute of Scientific and Technical Information of China (English)

    MA Shilong; SUI Yuefei; XU Ke

    2007-01-01

    The limit behaviors of computations have not been fully explored.It is necessary to consider such limit behaviors when we consider the properties of infinite objects in computer science,such as infinite logic programs,the symbolic solutions of infinite polynomial equations.Usually,we can use finite objects to approximate infinite objects,and we should know what kinds of infinite objects are approximable and how to approximate them effectively.A sequence {Rκ:κω}of term rewriting systems has the well limit behavior if under the condition that the sequence has the Set-theoretic limit or the distance-based limit,the sequence {Th(Rκ):κ∈ω} of corresponding theoretic closures of Rκ has the set-theoretic or distance-based limit,and limκ→∞ Th(Rκ) is equal to the theoretic closure of the limit of {Rκ:κ∈ω).Two kinds of limits of term rewriting systems are considered:one is based on the set-theoretic limit,the other is on the distance-based limit.It is proved thatgiven a sequence {Rκ:κ∈ω) of term rewriting systems Rκ,if there is a well-founded ordering (-<) on terms such that every Rκ is (-<)-well-founded,and the set-theoretic limit of {Rκ:κ∈ω).exists,then {Rκ:κ∈ω).has the well limit behavior;and if (1) there is a well-founded ordering(-<)on terms such that every Rκ is(-<-well-founded,(2) there is a distance d on terms which is closed under substitutions and contexts and (3) {Rκ:κ∈ω).is Cauchy under d then {Rκ:κ∈ω).has the well limit behavior.The results are used to approximate the least Herbrand models of infinite Horn logic programs and real Horn logic programs,and the solutions and Cr(o)bner bases of (infinite) sets of real polynomials by sequences of (finite) sets of rational polynomials.

  1. Microfabricated glucose biosensor for culture well operation.

    Science.gov (United States)

    Pemberton, R M; Cox, T; Tuffin, R; Sage, I; Drago, G A; Biddle, N; Griffiths, J; Pittson, R; Johnson, G; Xu, J; Jackson, S K; Kenna, G; Luxton, R; Hart, J P

    2013-04-15

    A water-based carbon screen-printing ink formulation, containing the redox mediator cobalt phthalocyanine (CoPC) and the enzyme glucose oxidase (GOx), was investigated for its suitability to fabricate glucose microbiosensors in a 96-well microplate format: (1) the biosensor ink was dip-coated onto a platinum (Pt) wire electrode, leading to satisfactory amperometric performance; (2) the ink was deposited onto the surface of a series of Pt microelectrodes (10-500 μm diameter) fabricated on a silicon substrate using MEMS (microelectromechanical systems) microfabrication techniques: capillary deposition proved to be successful; a Pt microdisc electrode of ≥100 μm was required for optimum biosensor performance; (3) MEMS processing was used to fabricate suitably sized metal (Pt) tracks and pads onto a silicon 96 well format base chip, and the glucose biosensor ink was screen-printed onto these pads to create glucose microbiosensors. When formed into microwells, using a 340 μl volume of buffer, the microbiosensors produced steady-state amperometric responses which showed linearity up to 5 mM glucose (CV=6% for n=5 biosensors). When coated, using an optimised protocol, with collagen in order to aid cell adhesion, the biosensors continued to show satisfactory performance in culture medium (linear range to 2 mM, dynamic range to 7 mM, CV=5.7% for n=4 biosensors). Finally, the operation of these collagen-coated microbiosensors, in 5-well 96-well format microwells, was tested using a 5-channel multipotentiostat. A relationship between amperometric response due to glucose, and cell number in the microwells, was observed. These results indicate that microphotolithography and screen-printing techniques can be combined successfully to produce microbiosensors capable of monitoring glucose metabolism in 96 well format cell cultures. The potential application areas for these microbiosensors are discussed. PMID:23265827

  2. Disposal of liquid radioactive wastes through wells or shafts

    Science.gov (United States)

    Perkins, B. L.

    1982-01-01

    Liquids and, in some cases, suitable solids and/or entrapped gases can be disposed of by: (1) well injection into deep permeable strata, bounded by impermeable layers; (2) grout injection into an impermeable host rock, forming fractures in which the waste solidifies; and (3) slurrying into excavated subsurface cavities. Radioactive materials are presently being disposed of worldwide using all three techniques; however, it would appear that if the techniques were verified as posing minimum hazards to the environment and suitable site-specific host rock were identified, these disposal techniques could be more widely used.

  3. Strong photoluminescence emission from resonant Fibonacci quantum wells.

    Science.gov (United States)

    Chang, C H; Chen, C H; Hsueh, W J

    2013-06-17

    Strong photoluminescence (PL) emission from a resonant Fibonacci quantum well (FQW) is demonstrated. The maximum PL intensity in the FQW is significantly stronger than that in a periodic QW under the Bragg or anti-Bragg conditions. Moreover, the peaks of the squared electric field in the FQW are located very near each of the QWs. The optimal PL spectrum in the FQW has an asymmetrical form rather than the symmetrical one in the periodic case. The maximum PL intensity and the corresponding thickness filling factor in the FQW become greater with increasing generation order. PMID:23787654

  4. Ordered Dissipative Structures in Exciton Systems in Semiconductor Quantum Wells

    Directory of Open Access Journals (Sweden)

    Andrey A. Chernyuk

    2006-02-01

    Full Text Available A phenomenological theory of exciton condensation in conditions of inhomogeneous excitation is proposed. The theory is applied to the study of the development of an exciton luminescence ring and the ring fragmentation at macroscopical distances from the central excitation spot in coupled quantum wells. The transition between the fragmented and the continuous ring is considered. With assumption of a defect in the structure, a possibility of a localized island of the condensed phase in a fixed position is shown. Exciton density distribution is also analyzed in the case of two spatially separated spots of the laser excitation.

  5. Application of Well-formed Substring Table: A Case Study on Garden Path Sentence%良构子串表在自然语言处理中的程序化应用:以花园幽径句为例

    Institute of Scientific and Technical Information of China (English)

    于屏方; 杜家利

    2012-01-01

    Natural language processing is a branch of computational linguistics, and usually analyzes and understands natural language by means of computer technology. NS flowchart has the structural features of choice algorithm parsing and the well-formed substring table (WFST) possesses the characters of storing multi-structures during the parsing. Garden path sentence is a special syntactic model during the syntactic processing in which processing breakdown appears, correspondingly bringing the reconstruction of the original model. The NS algorithm-based WFST is useful for syntactic parsing of special phenomenon (e. g. garden path sentence) in natural language processing, thus making it possible for this programming method to be used in language application.%自然语言处理是计算语言学研究的方向之一,通常借助计算机技术进行自然语言的分析和解读.NS流程图具有选择算法剖析的结构性特点.良构子串表具有保存剖析过程多种结构的特性.花园幽径句是句法加工过程中能产生行进式错位且对前期模式破旧立新的特殊句式.基于NS流程图算法的良构子串表可用于对自然语言中的特殊现象(如花园幽径句)进行程序剖析,最终使这种程序分析法在语言学中得到应用成为可能.

  6. Retroperitoneal well-differentiated inflammatory liposarcoma: a diagnostic dilemma.

    Science.gov (United States)

    Kawano, Rinsaku; Nishie, Akihiro; Yoshimitsu, Kengo; Irie, Hiroyuki; Tajima, Tsuyoshi; Hirakawa, Masakazu; Ishigami, Kousei; Ushijima, Yasuhiro; Okamoto, Daisuke; Yabuuchi, Hidetake; Taketomi, Akinobu; Nishihara, Yunosuke; Fujita, Nobuhiro; Honda, Hiroshi

    2008-08-01

    We present a case of retroperitoneal well-differentiated inflammatory liposarcoma that was extremely difficult to diagnose preoperatively. Computed tomography and magnetic resonance images showed a 5-cm homogeneous soft-tissue mass with a decreased apparent diffusion coefficient and without fat component in the retroperitoneum. Minimal fat stranding was detected around the mass. The preoperative working diagnosis was malignant lymphoma or inflammatory pseudotumor, whereas the final diagnosis after surgery was well-differentiated inflammatory liposarcoma. As a result, only a large component of lymphoid infiltration was recognized as a tumor preoperatively, and minimal fat stranding represented a component of lipoma-like liposarcoma. In this entity, a lipomatous component could easily be missed on radiologic imaging because of the conspicuity of lymphoid infiltration. We should consider the possibility of this variant when we evaluate a retroperitoneal tumor. PMID:18770006

  7. Trapping and controlling the dispersive wave within a solitonic well.

    Science.gov (United States)

    Deng, Zhixiang; Fu, Xiquan; Liu, Jun; Zhao, Chujun; Wen, Shuangchun

    2016-05-16

    We have numerically studied the effect of mutual interactions between soliton and dispersive waves and the possibility to create a solitonic well consisting of initial twin-solitons moving away from each other to trap the incident dispersive wave. Different from the case of the solitonic cage formed by the velocity-matched twin-solitons, the intense dispersive wave can break up into small pulses, which are almost completely trapped within the solitonic well. Moreover, the corresponding spectrum of the trapped dispersive wave can be narrowed firstly and then expanded, and a new dispersive wave can be generated as the twin-solitons collision occurred. By adjusting either the peak power or temporal width of incident dispersive wave, both the intensity of the collision-induced dispersive wave and the position where it is generated can be controlled. PMID:27409855

  8. Enhanced Sampling in the Well-Tempered Ensemble

    Science.gov (United States)

    Bonomi, M.; Parrinello, M.

    2010-05-01

    We introduce the well-tempered ensemble (WTE) which is the biased ensemble sampled by well-tempered metadynamics when the energy is used as collective variable. WTE can be designed so as to have approximately the same average energy as the canonical ensemble but much larger fluctuations. These two properties lead to an extremely fast exploration of phase space. An even greater efficiency is obtained when WTE is combined with parallel tempering. Unbiased Boltzmann averages are computed on the fly by a recently developed reweighting method [M. Bonomi , J. Comput. Chem. 30, 1615 (2009)JCCHDD0192-865110.1002/jcc.21305]. We apply WTE and its parallel tempering variant to the 2d Ising model and to a Gō model of HIV protease, demonstrating in these two representative cases that convergence is accelerated by orders of magnitude.

  9. Asphaltene precipitates in oil production wells

    DEFF Research Database (Denmark)

    Kleinitz, W,; Andersen, Simon Ivar

    1998-01-01

    At the beginning of production in a southern German oil field, flow blockage was observed during file initial stage of production from the oil wells. The hindrance was caused by the precipitation of asphaltenes in the proximity of the borehole and in the tubings. The precipitates were of solid......, "dry" consistency and resulted in total damage to flow. On the basis of residue samples from the wells, a number of physical and chemical analyses were performed, and the results were compared with those from studies on other asphaltenic precipitates. Among other items, the fraction of aromatic...... compounds in the organic scales from operations definitely differed from the data published in the literature. In order to dissolve the precipitates and thus eliminate the damage, various organic solvents and industrial solvent mixtures were examined. The kinetics of the dissolution process in operational...

  10. Method of separating the interpipe well space

    Energy Technology Data Exchange (ETDEWEB)

    Kachmar, Y.D.; Kostur, I.N.; Lyubomirova, Y.G.; Merkur' yev, A.B.; Shokalyuk, V.A.; Yeger, D.A.

    1981-09-07

    A hermetic sealing device is suggested for a well head. It includes a housing with flanges installed in the housing of the packing element with channel for passing pipes with couplings, sleeves the shut-off part for closing the pipe channel and fixing device. It is distinguished by the fact that in order to improve the reliability of hermetic sealing with prevention of discharges and repair of the well and to improve the installability and to simplify the design, a hermetic sealing coupling is installed on the sleeve with a slit under the fixing device. The packing element is made in the form of a self-packing coupling with inner conical opening whose smaller diameter exceeds the diameter of the pipe coupling, and whose larger diameter equals the diameter of the hermetic sealing coupling. The fixing device is made in the form of block gate with screw connections of supply, and flange with guide slits onto the fixing device.

  11. Assessment of radiation safety in well logging

    International Nuclear Information System (INIS)

    Radiation safety assessments required by current regulations are a means to verify compliance with the requirements. Different methods have been used for this purpose. In the paper the results of applying the method of risk matrices, applied for the first time in the practice of well logging are exposed. For each initiating event frequency of occurrence, the severity of its consequences and the probability of failure of the barriers identified were evaluated. Starting from these assumptions, the risk associated is determined for each of the identified accident sequences, using for this the SEVRRA code 'Risk Assessment System', originally designed for use in radiotherapy. As an result sequences increased risk associated with the practice of well logging were identified, which is the starting point for the further implementation of a coherent program of dose optimization in practice.

  12. Boise geothermal injection well: Final environmental assessment

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-31

    The City of Boise, Idaho, an Idaho Municipal Corporation, is proposing to construct a well with which to inject spent geothermal water from its hot water heating system back into the geothermal aquifer. Because of a cooperative agreement between the City and the US Department of Energy to design and construct the proposed well, compliance to the National Environmental Policy Act (NEPA) is required. Therefore, this Environmental Assessment (EA) represents the analysis of the proposed project required under NEPA. The intent of this EA is to: (1) briefly describe historical uses of the Boise Geothermal Aquifer; (2) discuss the underlying reason for the proposed action; (3) describe alternatives considered, including the No Action Alternative and the Preferred Alternative; and (4) present potential environmental impacts of the proposed action and the analysis of those impacts as they apply to the respective alternatives.

  13. Dewatering gas wells with pneumatic pumping equipment

    Energy Technology Data Exchange (ETDEWEB)

    Nickell, R.L.

    1973-01-01

    El Paso Natural Gas Co. has been operating pumping units on gas wells since 1964. At present, the company operates some 69 pumping units in the E. Panhandle field in Texas and the S. Erick field in Oklahoma. Of these 6 are pneumatic units and the remainder is conventional beam type units powered by gas-fueled engines or electric motors. A graphical representation of the data obtained from the El Paso wells in which various lift facilities are installed is included. These data show initial cost, maintenance cost, and lift cost per barrel of (1) gas engine beam unit; (2) electric beam unit; (3) pneumatic unit; (4) gas lift; and (5) intermitter. While not a panacea for all dewatering ills, pneumatic pumping represents an economical tool which may be applied to a wide range of conditions.

  14. Valuation of Geothermal Wells on Real Property

    Energy Technology Data Exchange (ETDEWEB)

    Rafferty, Kevin

    2001-12-01

    The Geo-Heat Center is often contacted by individual property owners, real estate professionals and others for assistance in the evaluation of geothermal resources in real property transactions. This document is a summary of information on the methods we have suggested to approach this situation in the past. The first of these methods is employed in situations in which the geothermal resource is in use serving some application. The second approach is for situations in which there is a known well on the property but it is not currently in use. The information presented here does not address situations in which the property is underlain by suspected geothermal resources for which there is no surface manifestation or existing development. The information contained in this document is intended to address large capacity wells of the type that would be used for commercial geothermal applications.

  15. Boise geothermal injection well: Final environmental assessment

    International Nuclear Information System (INIS)

    The City of Boise, Idaho, an Idaho Municipal Corporation, is proposing to construct a well with which to inject spent geothermal water from its hot water heating system back into the geothermal aquifer. Because of a cooperative agreement between the City and the US Department of Energy to design and construct the proposed well, compliance to the National Environmental Policy Act (NEPA) is required. Therefore, this Environmental Assessment (EA) represents the analysis of the proposed project required under NEPA. The intent of this EA is to: (1) briefly describe historical uses of the Boise Geothermal Aquifer; (2) discuss the underlying reason for the proposed action; (3) describe alternatives considered, including the No Action Alternative and the Preferred Alternative; and (4) present potential environmental impacts of the proposed action and the analysis of those impacts as they apply to the respective alternatives

  16. Properties of Sealing Materials in Groundwater Wells

    DEFF Research Database (Denmark)

    Köser, Claus

    pellets as sealing material in groundwater wells. The way and the pattern, in which bentonite pellets are deposited, have been shown to have an effect on the swelling pressure of the bentonite seal. During the transport phase of pellets from the terrain to a given sedimentation depth, a sorting process......) into densities for clay/water systems has been developed. This method has successfully been used to evaluate e.g., macroporosity, homogenization of the bentonite seal during the hydration of water, hydraulic conductivity and the creation of channels in the bentonite seals. Based on the results obtained...... in this Ph.D. thesis, a number of recommendations has been offered; i) a change regarding the production of pellets and ii) how sealing material must be treated in the actual construction of groundwater wells....

  17. Understanding cement mechanical behavior in SAGD wells

    Energy Technology Data Exchange (ETDEWEB)

    Xie, J.; Zahacy, T. A. [C-FER Technologies (Canada)

    2011-07-01

    In the heavy oil industry, the steam assisted gravity drainage process is often used to enhance oil recovery but it can cause cracks in the cement sheath. These cracks are the result of high steam temperatures and thermal expansion. In order to mitigate this risk, improved well designs are required. The aim of this paper is to present the mechanical behavior of the cement sheath during the heating phase. An analysis of the impact of design and operating parameters was conducted through thermal hydraulic and thermal mechanical analyses to assess cement integrity. These analyses were then performed on an example of an SAGD project in the southern part of the Athabasca oilsands region to assess the performance of the cement sheath. Results showed that potential damage to the cement can be reduced by slow heating and a lower Young's modulus cement blend. This paper makes recommendations for optimizing cement design in thermal recovery wells.

  18. Entangled States and the Gravitational Quantum Well

    CERN Document Server

    Alves, Rui; Bertolami, Orfeu

    2016-01-01

    We study the continuous variable entanglement of a system of two particles under the influence of Earth's gravitational field. We determine a phase-space description of this bipartite system by calculating its Wigner function and verify its entanglement by applying a generalization of the PPT criterion for non-Gaussian states. We also examine the influence of gravity on an idealized entanglement protocol to be shared between stations at different potentials based on the correlation of states of the gravitational quantum well.

  19. On Punishment and Well-being

    OpenAIRE

    Brandts, Jordi; Rivas, María Fernanda

    2009-01-01

    Abstract The existence of punishment opportunities has been shown to cause efficiency in some public goods experiments to increase considerably. In this paper we ask whether punishment also has a downside in terms of process dissatisfaction. We conduct an experiment to study the conjecture that an environment with strong punishment possibilities may lead to higher material payoffs but lower subjective well-being, in comparison with weaker punishment or no punishment possibilities a...

  20. Relative income, redistribution and well-being

    OpenAIRE

    FitzRoy, Felix; Nolan, Michael

    2010-01-01

    In a model with heterogeneous workers and both intensive and extensive margins of employment, we consider two systems of redistribution: a universal basic income, and a categorical unemployment benefit. Well-being depends on own-consumption relative to average employed workers’ consumption, and concern for relativity is a parameter that affects model outcomes. While labour supply incurs positive marginal disutility, we allow negative welfare effects of unemployment. We also compare Rawlsian a...