Dissertations / Theses: 'Submarine Gas well drilling'

1

Huang, Xiaoguang. "Limit state design of oil and gas well casings." Thesis, University of Wolverhampton, 2002. http://hdl.handle.net/2436/99757.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

AL-Rashidi, Abdulrahman F. "Designing neural networks for the prediction of the drilling parameters for Kuwait oil and gas fields." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=1209.

Full text

Abstract:

Thesis (M.S.)--West Virginia University, 1999.
Title from document title page. Document formatted into pages; contains x, 76 p. : ill. (some col.), map (some col.). Includes abstract. Includes bibliographical references (p. 54-55).

APA, Harvard, Vancouver, ISO, and other styles

3

Havens, David Loran Williams Harry. "Assessment of sediment runoff from natural gas well development sites." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-3665.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Holman, Travis Scott. "Analysis and optimization of coalbed methane gas well production." Thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/44957.

Full text

Abstract:

Coalbed methane wells have been used for many years as a viable means of extracting quantities of methane gas for use as a clean and efficient energy source. However, there is a limited understanding of many of the factors involved during the extraction process. As the more easily attainable reservoirs are depleted, it is imperative to gain a greater comprehension of these factors in order to develop techniques to efficiently collect economical quantities of methane gas in the future.

For this investigation, an extensive database was compiled, consisting of a large set of parameters pertaining to the development of coalbed methane gas wells. Using the information contained in this database, a statistical analysis was performed in order to gain a better understanding of the relationships between the many factors involved in extracting quantities of methane gas from the ground. The results of this analysis showed that the majority of the parameters shown to have the greatest impact on methane production were heavily dependent upon the geology of the region. As a result, any attempt to exploit them for optimization exercises would be extremely difficult. Of the parameters shown to have the least dependence on naturally occurring phenomena, the amount of proppant sand used to hold fractures open within the well system after stimulation was shown to have the most impact

During the well stimulation procedure, the proppant sand is carried into the fractures in the strata by a foam fracturing fluid. The sand acts to support the fracture system, increasing the permeability of formation, and allowing the methane gas to flow to the wellbore. By treating the sand particles with certain reagents, it is possible to render them hydrophobic, making it possible for them to stick to the bubbles within the foam and be carried deeper into the formation. Results of an investigation of sands treated to different degrees of hydrophobicity have shown that such treatments significantly increase the amount of sand distributed over a greater distance.
Master of Science

APA, Harvard, Vancouver, ISO, and other styles

5

Acheampong, Theophilus. "Essays on North Sea oil and gas economics : offshore safety economics and third party access to infrastructure in the upstream oil and gas industry." Thesis, University of Aberdeen, 2017. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=232397.

Full text

Abstract:

This thesis explores two themes on upstream oil and gas economics centred on offshore safety economics and third party access to infrastructure in the United Kingdom Continental Shelf (UKCS). The first part involves work that explores the nexus between the offshore safety regime and safety outcomes. It contributes to the literature by explaining the post-Piper Alpha safety regime changes with regard to our understanding, framing of safety decision making and benchmarking of safety outcomes. The second part investigates third party access to infrastructure issues in the UKCS. It contributes to our understanding of how different third party access to infrastructure arrangements can be utilised to maximise economic recovery. Each chapter addresses fundamental issues of North Sea oil and gas operations through the application of microeconomic, operations research and econometric methods within a formal analytical framework. The results provide insights into decision-making complexities in the upstream oil and gas industry by guiding policy makers. Specifically, part one of this thesis looks at safety performance in the post-Piper Alpha era in the UKCS. It investigates ways through which a more comprehensive and theoretically informed framework can be used to understand the linkages that arise when dealing with safety regulations and their impacts on the offshore oil and gas industry. Our objective is to empirically ascertain the determinants of offshore hydrocarbon releases within the context of the post-Piper Alpha offshore safety regime regulations. This is done using an observed number of hydrocarbon releases linked to a population denominator data of the number of the installations present in the UKCS. Three research problems are examined: (1) the transmission mechanisms through which safety regulation influence firm and industry productivity; (2) the assessment methods utilised in measuring and benchmarking regulatory outcomes in terms of safety compliance; and (3) the extent to which safety policies contribute to enhancing safety levels in the oil and gas industry. We initially review the background and literature on offshore safety with a particular emphasis on the UKCS in Chapter 2. We also frame our research questions and underlying hypothesis here. In Chapter 3, we present our underlying empirical framework and model specifications followed by some descriptive analysis of the hydrocarbon releases data. The results of the various econometric model specifications are analysed in Chapter 4. The second part of the thesis explores how possible different ownership patterns (including access arrangements) might affect the economic viability of exploiting remaining resources in the UKCS. This section attempts to answer two critical questions namely how the impact of the separation of infrastructure and field ownership affect economic recovery and the impact of taxation on field and hub economics in a mature oil basin. We explore how possible different ownership structures and access arrangements might affect the economic viability of remaining UKCS reserves. We apply a mixed integer programming (MIP) model to field data from the Northern North Sea. Specifically, we examine how the unbundling of infrastructure and field ownership, as well as different cost sharing and tariff arrangements, affect the long-term economics of hubs and their user fields. Regarding the layout, Chapter 5 talks about access to infrastructure issues in the UKCS namely the regulatory framework for access and related legislation. It leads to the development of a conceptual framework and model based upon which extractions are made to capture the various potential market outcomes. In Chapter 6, the empirical model, which utilises the mixed integer programming approach, is discussed. The data sources and characterization, as well as the presentation of the results from the Baseline Model, are presented in Chapter 7. The analysis of the Tax Model and the Cost Sharing plus Tax Model including structure and simulated results with underlying assumptions are presented in Chapter 8. Finally, Chapter 9 leads to a thorough discussion of the results followed by conclusions and policy recommendations.

APA, Harvard, Vancouver, ISO, and other styles

6

Erturk, Mehmet Cihan. "Production Performance Analysis Of Coal Bed Methane, Shale Gas, Andtight Gas Reservoirs With Different Well Trajectories And Completiontechniques." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615510/index.pdf.

Full text

Abstract:

The large amount of produced oil and gas come from conventional resources all over the world and these resources are being depleted rapidly. This fact and the increasing oil and gas prices force the producing countries to find and search for new methods to recover more oil and gas. In order to meet the demand, the oil and gas industry has been turning towards to unconventional oil and gas reservoirs which become more popular every passing day. In recent years, they are seriously considered as supplementary to the conventional resources although these reservoirs cannot be produced at an economic rate or cannot produce economic volumes of oil and gas without assistance from massive stimulation treatments, special recovery processes or advanced technologies. The vast increase in demand for petroleum and gas has encouraged the new technological development and implementation. A wide range of technologies have been developed and deployed since 1980. With the wellbore technology, it is possible to make use of highly deviated wellbores, extended reach drilling, horizontal wells, multilateral wells and so on. All of the new technologies and a large number of new innovations have allowed development of increasingly complex economically marginal fields where shale gas and coal bed methane are found. In this study, primary target is to compare different production methods in order to obtain better well performance and improved production from different types of reservoirs. It is also be given some technical information regarding the challenges such as hydraulic fracturing and multilateral well configuration of the unconventional gas reservoir modeling and simulation. With the help of advances in algorithms, computer power, and integrated software, it is possible to apply and analyze the effect of the different well trajectories such as vertical, horizontal, and multilateral well on the future production performance of coal bed methane, shale gas, and tight gas reservoirs. A commercial simulator will be used to run the simulations and achieve the best-case scenarios. The study will lead the determination of optimum production methods for three different reservoirs that are explained above under the various circumstances and the understanding the production characteristic and profile of unconventional gas systems.

APA, Harvard, Vancouver, ISO, and other styles

7

Maricic, Nikola. "Parametric and predictive analysis of horizontal well configurations for coalbed methane reservoirs in Appalachian Basin." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3703.

Full text

Abstract:

Thesis (M.S.)--West Virginia University, 2004.
Title from document title page. Document formatted into pages; contains xiii, 149 p. : ill. (some col.), maps. Includes abstract. Includes bibliographical references (p. 149).

APA, Harvard, Vancouver, ISO, and other styles

8

Havens, David Loran. "Assessment of Sediment Runoff from Natural Gas Well Development Sites." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc3665/.

Full text

Abstract:

Storm water sediment runoff from disturbed landscapes has the potential to impair aquatic environments. Small construction sites of 1-5 acres in the United States are currently regulated by the United States Environmental Protection Agency to minimize storm water runoff damages to the environment. Gas well construction sites are similar to other construction sites in how the landscape is altered, but are not similarly regulated. This study identified sediment runoff from gas well development sites by collecting it in traps and weirs, and by measuring sediment debris lobes. Sediment primarily consisted of silt and clay sized particles. Sediments from two gas well sites formed five debris lobes that ranged in size from 325 to 3,290 square feet. Sediment loadings estimated from the debris lobes averaged 57.1 tons per year/acre. Future studies should focus on further quantification of sediment movement off of gas well sites and identify effective erosion control methods.

APA, Harvard, Vancouver, ISO, and other styles

9

Valås, Inge Åsmund. "A Data-intensive Approach to Prediction of Unwanted Events during Oil and Gas Well Drilling." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9282.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Wachal, David J. Hudak Paul F. "Characterizing storm water runoff from natural gas well sites in Denton County, Texas." [Denton, Tex.] : University of North Texas, 2008. http://digital.library.unt.edu/permalink/meta-dc-11064.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Dudo, Anthony David. "An environmental controversy how newspapers framed coverage of the Bush administration's proposal to drill for oil and gas in the Arctic National Wildlife Refuge (Alaska) /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 0.65Mb., 129 p, 2005. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:1428181.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Daniel, Michael. "The Effect of Natural Gas Well Setback Distance on Drillable Land in the City of Denton, Texas." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc499998/.

Full text

Abstract:

Municipalities protect human health and environmental resources from impacts of urban natural gas drilling through setback distances; the regulation of distances between well sites and residences, freshwater wells, and other protected uses. Setback distances have increased over time, having the potential to alter the amount and geographical distribution of drillable land within a municipality, thereby having implications for future land use planning and increasing the potential for future incompatible land uses. This study geographically applies a range of setback distances to protected uses and freshwater wells in the city limits of Denton, Texas to investigate the effect on the amount of land remaining for future gas well development and production. Denton lies on the edge of a productive region of the Barnett Shale geological formation, coinciding with a large concentration of drillable land in the southwestern region of the study area. This region will have the greatest potential for impacts to future municipal development and land use planning as a result of future gas well development and higher setback standards. Given the relatively high acreage of drillable land in industrially zoned subcategory IC-G and the concern regarding gas well drilling in more populated areas, future drilling in IC-G, specifically in IC-G land cover classes mowed/grazed/agriculture and herbaceous, would have the least impact on residential uses and tree cover, as well as decreasing the potential for future incompatible land uses.

APA, Harvard, Vancouver, ISO, and other styles

13

Long, Laurie C. "Drilling Down Natural Gas Well Permitting Policy: Examining the Effects of Institutional Arrangements on Citizen Participation and Policy Outcomes." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc500172/.

Full text

Abstract:

Over the past decade the movement of natural gas drilling operations toward more suburban and urban communities has created unique policy challenges for municipalities. Municipal response is manifest in a variety of institutional arrangements, some more enabling than others regarding citizen access to public hearings. This observation lead to the main research question, “How are variations in citizen participation affecting policy outcomes?” The argument is made that institutions affecting citizen participation, in turn affect policy outcomes. If the general public is given access to public hearings, their preferences for longer setbacks will be taken into account and the approved gas wells will have greater distances from neighboring residences – effectively providing for greater safety. Given the paucity of research on the topic of natural gas drilling, the research first begins with the presentation of a theoretical framework to allow for analysis of the highly complex topic of gas well permitting, emphasizing the rule-ordered relationships between the various levels of decision making and provides a typology of collective action arenas currently used by Texas municipalities. The research uses paired case studies of most similar design and employs a mixed methods process for the collection, analysis and interpretation of the municipal level gas well permitting process. The investigation includes a complete census of 185 approved gas wells from four North Texas cities between the years 2002-2012; 20 interviews comprised of city officials and drilling operators; and archival records such as gas well site plans, ordinances, on-line government documents and other public information. The findings reveal that zoning institutions are associated with a 15% longer gas well setback than siting institutions and institutions without waivers are associated with a 20% longer gas well setback than institutions with waiver rules. The practical implications suggest that citizen participation has a positive effect on public safety within gas well permitting decisions.

APA, Harvard, Vancouver, ISO, and other styles

14

Davis, Windy Niccole. "Effects of coalbed natural gas development on fish assemblages in tributary streams in the Powder River Basin, Montana and Wyoming." Thesis, Montana State University, 2008. http://etd.lib.montana.edu/etd/2008/davis/DavisW0508.pdf.

Full text

Abstract:

The Powder River Basin in Wyoming and Montana is undergoing the world's largest development of coalbed natural gas (CBNG) extraction. Potential exists for substantial effects on aquatic ecosystems because CBNG development involves production and disposal of large quantities of CBNG product water that differs from surface waters and alters natural flow regimes. In 2005 and 2006, I compared fish assemblages in streams with (treatment) and without (control) CBNG development, determined fish presence, growth, and survival in streams composed entirely of product water, and compared fish assemblages at multiple points above and below development to determine the effects of coalbed natural gas development on fish assemblages in the Powder River Basin. Some evidence suggested CBNG development had little or no effect on fish. For example, species richness and index of biotic integrity (IBI) scores were similar between developed and undeveloped sites, and no strong relationships existed between overall IBI scores or most IBI metric scores and the number or density of CBNG wells in a drainage area. Streams composed largely or entirely of product water were inhabited by reproducing populations of several species of fish. Other evidence suggested that CBNG may negatively affect fish assemblages over time. Conductivity was on average higher in treatment streams and was negatively related to biotic integrity. Bicarbonate, one of the primary salts in product water, appeared to be harmful to some species of fish. One salt-tolerant non-native species, northern plains killifish, was observed almost exclusively in treatment streams. The study was limited by a lack of pre-development data, unquantifiable product-water discharges, and because it was conducted during dry years. Potential effects of CBNG development may be more apparent during wet years when more sensitive fish assemblages are present. Monitoring efforts, development of a bicarbonate water quality standard, and efforts towards requiring complete product-water discharge reporting should continue.

APA, Harvard, Vancouver, ISO, and other styles

15

Wachal, David J. "Characterizing Storm Water Runoff from Natural Gas Well Sites in Denton County, Texas." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc11064/.

Full text

Abstract:

In order to better understand runoff characteristics from natural gas well sites in north central Texas, the City of Denton, with assistance through an EPA funded 104b3 Water Quality Cooperative Agreement, monitored storm water runoff from local natural gas well sites. Storm water runoff was found to contain high concentrations of total suspended solids (TSS). Observed TSS concentrations resulted in sediment loading rates that are similar to those observed from typical construction activities. Petroleum hydrocarbons, in contrast, were rarely detected in runoff samples. Heavy metals were detected in concentrations similar to those observed in typical urban runoff. However, the concentrations observed at the gas well sites were higher than those measured at nearby reference sites. Storm water runoff data collected from these sites were used to evaluate the effectiveness of the water erosion prediction project (WEPP) model for predicting runoff and sediment from these sites. Runoff and sediment predictions were adequate; however, rainfall simulation experiments were used to further characterize the portion of the site where drilling and extraction operations are performed, referred to as the "pad site." These experiments were used to develop specific pad site erosion parameters for the WEPP model. Finally, version 2 of the revised universal soil loss equation (RUSLE 2.0) was used to evaluate the efficiency of best management practices (BMPs) for natural gas well sites. BMP efficiency ratings, which ranged from 52 to 93%, were also evaluated in the context of site management goals and implementation cost, demonstrating a practical approach for managing soil loss and understanding the importance of selecting appropriate site-specific BMPs.

APA, Harvard, Vancouver, ISO, and other styles

16

Holloran, Matthew J. "Greater sage-grouse (Centrocercus urophasianus) population response to natural gas field development in western Wyoming." Laramie, Wyo. : University of Wyoming, 2005. http://www.voiceforthewild.org/SageGrouseStudies/Matt%5FHolloran%5FVersion4.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Bayagbon, Anthony Mamurhomu. "Impact assessment of the environmental protection policies in the upstream oil industry in Nigeria / A.M. Bayagbon." Thesis, North-West University, 2011. http://hdl.handle.net/10394/6276.

Full text

Abstract:

The need for energy and the associated economic benefits from the oil and gas deposits found mainly in the Niger Delta region of Nigeria necessitated the exploration and exploitation activities being carried out by the oil and gas Companies. However, these exploration and exploitation activities due to their unpredictable nature have a huge potential for environmental pollution as been experienced in the form of oil spills, gas flaring, irresponsible disposal of waste and several other activities that have resulted in the environmental degradation of the Niger Delta region. In the light of these, the Federal Government of Nigeria having experienced the consequences of pollution of the environment during the Koko Toxic Waste Dump incident in the then Bendel State in 1987 established a regulatory body tasked with the responsibility of harmonizing the economic interest from the oil and gas exploration and exploitation activities with the sustainability of the natural environment by developing well structured and articulated policies aimed at guiding the operations of the oil and gas operators, track their compliance and administer appropriate punitive measures for non compliance. However, this research work which is aimed at evaluating the impact of the environmental protection policies in upstream oil and gas activities in the Niger Delta region, involved the use of questionnaires and interviews. These questionnaires were completed by the management and staff of three major oil and gas companies operating within the area, the Department of Petroleum Resources and members of the Host communities. The interview was carried out to provide relevant feedback on their assessment of the impact made by the environmental protection policies on the upstream oil and gas activities in their operational areas/host communities. The study however concluded that “Although there is a regulatory body tasked with the responsibility to develop, implement and track compliance of the environmental protection policies in the upstream oil industry, the body is ineffective and as such the impact of the environmental protection policies is inadequate. Appropriate informed recommendations on the improvement strategies to the identified gaps that resulted in the unfavorable conditions were also provided.
Thesis (M.Ing. (Development and Management Engineering))--North-West University, Potchefstroom Campus, 2011

APA, Harvard, Vancouver, ISO, and other styles

18

Graham, Garrett. ""Don't Frack with Denton"." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc984171/.

Full text

Abstract:

Don't Frack With Denton chronicles the ground-breaking movement to ban hydraulic fracturing in the city of Denton, Texas by combining observational location shooting with extensive sit-down interviews and carefully negotiated subject-filmmaker relationships to create a safe and comfortable space for thoughtful reflection and criticism of a complex social movement who's activities span several years and many individuals. The result is a long-form documentary that is unapologetically in solidarity with this movement's goals while simultaneously maintaining enough editorial independence and critical distance to allow the activists themselves to honestly evaluate their decision-making, tactics and interpersonal relationships in ways that will provide insight and instruction to similar movements around the country and the world.

APA, Harvard, Vancouver, ISO, and other styles

19

Patr?cio, Rafael Veloso. "Estudos de controle na perfura??o de po?os de petr?leo em presen?a de Kick de g?s." Universidade Federal Rural do Rio de Janeiro, 2016. https://tede.ufrrj.br/jspui/handle/jspui/1543.

Full text

Abstract:

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-04-20T13:29:23Z No. of bitstreams: 1 2016 - Rafael Veloso Patr?cio.pdf: 9711857 bytes, checksum: 5f7e5b198769c9a633040fd42126df03 (MD5)
Made available in DSpace on 2017-04-20T13:29:23Z (GMT). No. of bitstreams: 1 2016 - Rafael Veloso Patr?cio.pdf: 9711857 bytes, checksum: 5f7e5b198769c9a633040fd42126df03 (MD5) Previous issue date: 2016-08-24
Funda??o de Apoio a Pesquisa Cient?fica e Tecnol?gica da UFRRJ-FAPUR
Controling of downhole pressure is essential for a safety process of oil well drilling. In a permeable formation, fluids from reservoir come into the annulus region (wellbore) when the downhole pressure is below pore pressure, featuring a disorder called kick. Literature reports some mathematical models developed to predict the behavior of the wellbore in presence of gas kick, however, there are few works reporting control and experiments. By this reason, it was built an experimental plant in order to study system?s behavior during fluid inlet (gas) from reservoir to annulus, and then, sought to develop a control strategy able to mitigate this disorder, without shut-in the well. A strategy with reconfiguration of the control law feedback?feedforward was designed to reject disturbance (gas inlet in the annular), to ensure the drilling within the operating window. Parallelly,simulation studies were developed which are: the construction of mathematical model, validated by the employment of the experimental unit, and the implementation of control based on reconfiguration of control law.
O controle da press?o anular de fundo ? fundamental para que a perfura??o de po?os de petr?leo seja feita de forma segura. Em uma forma??o perme?vel, fluidos do reservat?rio migram para a regi?o anular quando a press?o anular de fundo est? abaixo da press?o de poros, caracterizando o dist?rbio denominado kick. A literatura reporta alguns modelos matem?ticos desenvolvidos para prever o comportamento do po?o na presen?a de kick de g?s, por?m poucos s?o os trabalhos abordando controle e experimentos. A partir desta motiva??o, foi constru?do uma planta experimental para estudar o comportamento do sistema durante a entrada de fluido (g?s) do reservat?rio no anular, e assim, buscou-se desenvolver uma estrat?gia de controle que mitigue tal dist?rbio sem a necessidade do fechamento total do po?o. Uma estrat?gia com reconfigura??o da lei de controle feedback?feedforward foi desenvolvida para rejeitar a perturba??o (entrada de g?s no anular), visando assegurar a perfura??o dentro da janela operacional. Paralelamente, foram desenvolvidos estudos de simula??o quais sejam: a constru??o de um modelo matem?tico, validado empregando-se a unidade experimental, e a implanta??o de controle baseado em reconfigura??o da lei de controle

APA, Harvard, Vancouver, ISO, and other styles

20

Dempsey, Angela C. Moore Dennis D. "Drilling for oil and gas in and near Florida lease sale 181 and beyond /." 2003. http://etd.lib.fsu.edu/theses/available/etd-11172003-161616/.

Full text

Abstract:

Thesis (M.A.)--Florida State University, 2003.
Advisor: Dr. Dennis D. Moore, Florida State University, College of Arts and Sciences, Program in American and Florida Studies. Title and description from dissertation home page (viewed Mar. 2, 2004). Includes bibliographical references.

APA, Harvard, Vancouver, ISO, and other styles

21

Williamson, Ryan M. "Impacts of oil and gas development on sharp-tailed grouse on the Little Missouri National Grasslands, North Dakota /." 2009. http://wfs.sdstate.edu/wfsdept/Publications/Theses/Williamson,%20Ryan%20M.%20M.S.-2009.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic 'Submarine Gas well drilling'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles