Dissertationen zum Thema „Oil and gas development projects“
Geben Sie eine Quelle nach APA, MLA, Chicago, Harvard und anderen Zitierweisen an
Machen Sie sich mit Top-50 Dissertationen für die Forschung zum Thema "Oil and gas development projects" bekannt.
Neben jedem Werk im Literaturverzeichnis ist die Option "Zur Bibliographie hinzufügen" verfügbar. Nutzen Sie sie, wird Ihre bibliographische Angabe des gewählten Werkes nach der nötigen Zitierweise (APA, MLA, Harvard, Chicago, Vancouver usw.) automatisch gestaltet.
Sie können auch den vollen Text der wissenschaftlichen Publikation im PDF-Format herunterladen und eine Online-Annotation der Arbeit lesen, wenn die relevanten Parameter in den Metadaten verfügbar sind.
Sehen Sie die Dissertationen für verschiedene Spezialgebieten durch und erstellen Sie Ihre Bibliographie auf korrekte Weise.
Kilani, Meriam. „Multiple product-project decisions coordination support : application to oil and gas development projects“. Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPAST027.
Der volle Inhalt der QuelleThe major challenge addressed in this research concerns the coordination of the multiple interdependent decisions that must be made during the project, either technical, financial, or contractual. Interdependence means that making one decision without considering the impacts for other decisions may imply some underperformance, or even dead ends, iterations, and rework.To overcome this challenge, a more adaptable multi-decision-making process has been proposed, consisting of three blocks: 1/ modeling the decision network and formulating the multi-decision problem; 2/ structuring the problem to propose relevant and plausible scenarios assembled from elementary decision alternatives; 3/ solving the problem by selecting and recommending scenarios.Building the multi-decision-making process is based on multiple possibilities for each block. The decision-maker selects from a set of possible choices to adapt the decision-making process to the precise context.For block #1, we have first articulated the need to build a global decision network that models the decisions under study and the interdependencies they may have with other decisions. We have then argued that graphs and matrices can be used to fulfill this need. Both methods allow to include all decisions and interdependencies of the decision network in one single model, each of them having its advantages and drawbacks, with a kind of complementarity.Then, to formulate the local multi-decision problem, two interactions-based clustering approaches are proposed: the top-down approach (considering decision interdependencies) and the bottom-up approach (with an additional due date-based grouping of decisions). Both help to delineate the focus of decision makers on a specific set of decisions, since considering the whole network of decisions at the same time can be challenging.In block #2, to structure the problem, two matrix-based and one graph-based methods have been proposed. These methods offer the possibility to generate possible scenarios considering compatibility and performance criteria, either sequentially (morphological analysis), simultaneously (QFD), or with a hybrid way (graph exploration). For the two matrix-based methods, an algorithm was proposed to facilitate the identification of plausible scenarios. As for the graph-based method, a lighter heuristic can be applied on live during a decision meeting.Finally, to solve the problem in block #3, several MCDA methods have been listed for evaluating and selecting a recommended scenario: absolute compensatory methods, relative pairwise comparison methods, and relative comparison to reference point methods.According to industrial actors, such a process could improve coordination mechanisms between the major decisions of their projects. Even though decisions were interdependent, they were not often considered as such, and our proposed process permits (according to them) to have a better vision of the decisions to be made together and of the consequences of the choices. A fictitious case study, inspired by real past projects, was used to illustrate the proposed multi-decision coordination process.We are convinced that our research will provide a solid basis for further studies on the coordination of multiple interdependent decisions in complex projects, although there are academic and industrial perspectives that need to be tackled
Akoh, Emmanuel Inalegwu. „Barriers to public participation in developmental projects : a Nigerian community perspective (case study of the Gbaran-Ubie oil and gas project)“. Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1001869.
Der volle Inhalt der QuelleMohebbi, Amir Hassan, und Ngadhnjim Bislimi. „Project Risk Management : Methodology Development for Engineering, Procurement and Construction Projects - A Case Study in the Oil and Gas Industry“. Thesis, Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-29142.
Der volle Inhalt der QuelleNwete, Bede. „The role of soft law in oil and gas project development in developing countries : a study of how this impacts social-legal risks management in the oil and gas industry“. Thesis, University of Aberdeen, 2017. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=234033.
Der volle Inhalt der QuelleAfidegnon, Kodjo Galevissi. „Success Factors for Power Project Development Businesses in Sub-Saharan Africa“. ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/6502.
Der volle Inhalt der QuelleAl-Saffar, Ali. „An investigation into the project scope of work role and characteristics, and its development process enablers and barriers in the Oil and Gas Sector : a comparative case study, Saudi Arabia“. Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/an-investigation-into-the-project-scope-of-work-role-and-characteristics-and-its-development-process-enablers-and-barriers-in-the-oil-and-gas-sector-a-comparative-case-study-saudi-arabia(4bf3c4d8-cfc8-4061-b9e5-f95fb45b5ee3).html.
Der volle Inhalt der QuelleGhadhban, Zaid T. „Design of a stand alone fully integrated communications, monitoring and control system for a novel remote sub-sea gas facility“. Curtin University of Technology, Faculty of Engineering, Department of Chemical Engineering, 2008. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=120520.
Der volle Inhalt der QuelleAn integral part of a novel sub-sea natural gas dehydration project is the need to design and develop a communications, monitor and control system that is extremely reliable within a harsh marine environment. The off shore gas gathering and processing facility will be unmanned, therefore the entire ongoing operation of the sub-sea facility, and any sea surface equipment, will be dependent on the proper functioning of the communication system. System redundancy and low power consumption are also important issues.
The continuous bi-directional transmission of information between the field and shore-based control centres, together with the complexity of any maintenance / repair missions requires an extremely highly reliable system. The prospect of false alarms must be maintained at an absolute minimum.
Within this thesis the history and development of ocean based communications up to current state-of-the art technology is reviewed. Based on the unique and demanding requirements of the sub-sea gas processing facility, detailed recommendations are made for both a primary and back-up communication systems that meet the given criteria of being robust and having very low power requirements.
Alonge, Funmilayo Ronke. „Financing oil and gas projects in Nigeria“. Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/9158.
Der volle Inhalt der QuelleOil and gas is a major source of energy worldwide. Therefore its significance for Nigeria as a major producer cannot be understated. Notwithstanding the huge revenue derived from oil and gas, its contribution to the Gross Domestic Product (GDP) is minimal. This can be ascribed to the fact that there has been minimal indigenous participation in oil and gas projects as this has often been undertaken by the International Oil Companies (IOCs). To address this, the Federal Government awarded marginal fields and oil blocks to independent indigenous oil companies and enacted the Nigerian Oil and Gas Industry Content Development Act in 2010. This has been of great benefit to indigenous participation. However, these indigenous companies often encounter a major problem in accessing finance for their projects. This dissertation examines the challenges to financing faced by the independent indigenous oil companies and how project financing will be the best means of financing a project by these companies.
Souza, Dayse da Mata Oliveira. „Sistemas de medi??o de desempenho para projetos de PD&I no Setor de Petr?leo e G?s Natural“. Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/13031.
Der volle Inhalt der QuelleOrganizations are seeking new ideas, tools and methods aiming to improve management process and performance. On the other hand, system performance measurement needs to portray organizational changes and provide managers with a set of true and more appropriate information for the decision-making process. This work aims to propose a performance measurement system in the academic field regarding Research, Development and Innovation (RDI) in the oil and gas industry. The research performed a bibliographic review in a descriptive exploratory manner. A field research was conducted with an expert focus group in order to gather new indicators. As for the validation of these indicators, a survey with experienced professional was also realized. The research surveyed four segments in and outside of the Federal University of Rio Grande do Norte-Brazil such as oil and gas project coordinators, staff at Academic Planning Offices, FUNPEC employees as well as coordinators from Petrobr?s. The performance measuring system created from this study features three interrelated performance indicators pointed out as: process indicators, outcome indicators and global indicators. The proposal includes performance indicators that seek to establish more appropriate strategies for effective institution management. It might help policy making of university-industry interaction policies
Cada vez mais as organiza??es est?o ? procura de novas id?ias, novas ferramentas e novos m?todos que as ap?iem no aprimoramento do seu processo de gest?o e assim, melhorar seu desempenho. Por conseguinte, os sistemas de medi??o de desempenho precisam retratar as mudan?as nas organiza??es proporcionando aos seus gestores um conjunto de informa??es verdadeiras e mais adequadas ? tomada de decis?o. O objetivo deste trabalho ? propor um sistema de medi??o de desempenho para os projetos de PD&I no setor de petr?leo e g?s natural para universidades. A pesquisa foi realizada utilizando-se dos seguintes procedimentos: uma revis?o bibliogr?fica com um car?ter explorat?rio-descritivo, acompanhada da pesquisa de campo, a realiza??o de focus group com especialistas para o levantamento de novos indicadores e um survey com profissionais experientes envolvidos na execu??o de projetos dessa natureza, com a finalidade de valida??o dos indicadores. Foram pesquisados quatro segmentos por meio de coordenadores de projetos de petr?leo e g?s natural da UFRN, funcion?rios da Pr?-Reitoria de Planejamento, funcion?rios da FUNPEC e coordenadores da Petrobras. O sistema de medi??o de desempenho gerado a partir deste estudo apresenta em sua estrutura tr?s grupos de indicadores de desempenho inter-relacionados: indicadores de processo, indicadores de resultado e indicadores globais. A proposta inclui indicadores de desempenho que procuram estabelecer uma estrat?gia mais adequada para uma gest?o eficaz das institui??es e pode contribuir para auxiliar as pol?ticas de intera??o universidade-empresa
Al-Thani, Faisal F. J. „Comprehensive financial model for oil and gas field projects in Qatar“. Thesis, University of Leeds, 2002. http://etheses.whiterose.ac.uk/3891/.
Der volle Inhalt der QuelleClaycomb, Helen M. „Two Clamped Pipe Support Connections for Oil and Gas Brownfield Projects“. ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/td/2688.
Der volle Inhalt der QuelleAydın, Cevat Onur. „Sequential investment planning for complex oil development projects“. Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/43051.
Der volle Inhalt der QuelleIncludes bibliographical references (leaves 86-90).
In this thesis, we consider sequential real investment decisions for the development of discovered oil prospects. Following a decision analysis approach, we propose a methodology to explore the upside of a dynamic drilling strategy, where there is a significant uncertainty about the reservoir complexity. We introduce the notion of information lag, whereby the decision-maker receives the information with a certain delay after each drilling is completed. In an illustrative case study, we apply our proposed methodology on a single reservoir to characterize the value of flexibility and to describe the relative impact of the information lags, in the context of an extensive drilling plan. We also provide several extensions of this case study in order to show how this methodology would be extended in a more comprehensive decision framework. Topics include choosing the optimal production capacity, valuing an initial test opportunity, and developing a field with multiple reservoirs. Our results indicate that flexible thinking may be a significant source of value to the projects. However, the incremental value might be over-rated if information lags are not appropriately included in the analysis.
by Cevat Onur Aydın.
S.M.
Anifowose, Babatunde A. „Assessing water and environmental impacts of oil and gas projects in Nigeria“. Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/2841/.
Der volle Inhalt der QuelleAl, Subaih Adel. „A framework for implementation of IPD principles in oil & gas projects“. Thesis, University of Salford, 2016. http://usir.salford.ac.uk/41093/.
Der volle Inhalt der QuelleLu, De Lama Graciela. „Struggles Over Governance of Oil and Gas Projects in the Peruvian Amazon“. Thesis, University of Oregon, 2016. http://hdl.handle.net/1794/20458.
Der volle Inhalt der QuelleTeymouri, Ahmad. „An Integrated Model for Auditing Construction Projects - a Case Study of Oil and Gas Projects in Iran“. Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32072.
Der volle Inhalt der QuelleVeflen, Martin Elton. „The Political Risk of Oil and Gas Mega Projects : A Descriptive Empirical Analysis“. Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for sosiologi og statsvitenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13123.
Der volle Inhalt der QuelleZand, Emad Dolatshahi. „Risk analysis in oil and gas projects : a case study in the Middle East“. Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/47875.
Der volle Inhalt der QuelleIncludes bibliographical references (leaves 65-66).
Global demand for energy is rising around the world. Middle East is a major supplier of oil and gas and remains an important region for any future oil and gas developments. Meanwhile, managing oil and gas projects are becoming more challenging and riskier than ever before. Therefore, risk analysis and development of strategies to manage risk are crucial to the reduction of potential future delays and cost overruns in oil and gas projects. This thesis focuses on analysis and management of the technical and institutional risks involved in oil and gas projects in the Middle East. In the first section, we describe various types of risk and introduce a framework for risk management. We then conduct a case study to highlight some of the most important risk factors involved in oil and gas projects as well as recommendations to deal with such risks. The case is based on publically available information and includes two distinct projects with similar geologies under two separate legal regimes in Iran and Qatar.
by Emad Zand.
S.M.
Ovbagbedia, O. O. „Framework for knowledge management implementation in oil and gas projects : case Nigeria and UK“. Thesis, Liverpool John Moores University, 2015. http://researchonline.ljmu.ac.uk/4431/.
Der volle Inhalt der QuelleEllafi, Jamal Saad. „Investigating the finance strategies for gas projects in development countries“. Thesis, University of Manchester, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488297.
Der volle Inhalt der QuelleTobin, Myreene. „Leading the way in oil and gas sustainable development“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ59489.pdf.
Der volle Inhalt der QuelleSalter, Edward Robert Edmund. „Holistic environmental assessment of oil and gas field development“. Thesis, Heriot-Watt University, 2000. http://hdl.handle.net/10399/1228.
Der volle Inhalt der QuelleIkhinmwin, Cletus Isiwhanze. „Structured contract strategies for capital and operations expenditure projects in the oil and gas industry“. Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/71185/1/Cletus%20Isiwhanze_Ikhinmwin_Thesis.pdf.
Der volle Inhalt der QuelleCatchpole, Roger. „Establishing cost-effective safety management for major oil and gas exploitation projects in the design phase“. Thesis, Open University, 2012. http://oro.open.ac.uk/54513/.
Der volle Inhalt der QuelleKashwani, Ghanim Abdalla. „Enhancing the implementation of safety engineering systems in oil and gas construction projects in the UAE“. Thesis, Heriot-Watt University, 2017. http://hdl.handle.net/10399/3251.
Der volle Inhalt der QuelleBotta, Nepeya Azaria. „Education, community engagement and oil and gas development : northeast British Columbia“. Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/59443.
Der volle Inhalt der QuelleApplied Science, Faculty of
Mining Engineering, Keevil Institute of
Graduate
McKenzie, Lisa M., William B. Allshouse, Tim E. Byers, Edward J. Bedrick, Berrin Serdar und John L. Adgate. „Childhood hematologic cancer and residential proximity to oil and gas development“. PUBLIC LIBRARY SCIENCE, 2017. http://hdl.handle.net/10150/623043.
Der volle Inhalt der QuelleAyoola, Olakunle Thomas. „Nigerian Oil and Gas Industry Content Development Act's Perceived Performance Impact“. ScholarWorks, 2017. https://scholarworks.waldenu.edu/dissertations/3383.
Der volle Inhalt der QuellePeinke, Laura. „Supplier Development framework analysis in South Africa's upstream oil & gas sector“. Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/29028.
Der volle Inhalt der QuelleMuvundika, Alick Bulala. „Development of a framework for assessing sustainability benefits of landfill gas Clean Development Mechanism (CDM) projects“. Thesis, University of Central Lancashire, 2015. http://clok.uclan.ac.uk/12874/.
Der volle Inhalt der QuelleBaswaid, Ahmed Mohsen Salem. „Development of an Asset Management Framework for the Oil and Gas Industry“. Thesis, Curtin University, 2019. http://hdl.handle.net/20.500.11937/76347.
Der volle Inhalt der QuelleYiallourides, Constantinos. „Joint development of oil and gas resources : the way forward in disputed waters“. Thesis, University of Aberdeen, 2017. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=231747.
Der volle Inhalt der QuellePotterf, Jebadiha E. „Framing Fracking: Media Coverage of Unconventional Oil and Gas Development in South Texas“. DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/4263.
Der volle Inhalt der QuelleMartin, Andrea Lynn. „Development of a Nitric Oxide Gas Sensor and Air Quality Projects in a High School Chemistry Classroom“. Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/MartinAL2004.pdf.
Der volle Inhalt der QuelleMay, Peter Herman. „A modern tragedy of the non-commons agro-industrial change and equity in Brazil's babassu palm zone /“. [Ithaca, N.Y. : Cornell University], 1986. http://catalog.hathitrust.org/api/volumes/oclc/15080259.html.
Der volle Inhalt der QuelleSmolensky, Nicole Limunga. „Population enumeration and the effects of oil and gas development on dune-dwelling lizards“. [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2848.
Der volle Inhalt der QuelleAlashhab, M. E. A. „The impact of globalisation on the development of the Libyan oil and gas sector“. Thesis, Nottingham Trent University, 2015. http://irep.ntu.ac.uk/id/eprint/29003/.
Der volle Inhalt der QuelleCook, Joshua R. „Development of a program to gather and process data from oil and gas fields“. Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3727.
Der volle Inhalt der QuelleTitle from document title page. Document formatted into pages; contains ix, 80 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 33-34).
Strachan, Peter A. „Competitive pressures and environmental management systems in the Scottish construction and oil and gas industries“. Thesis, Robert Gordon University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343637.
Der volle Inhalt der QuelleRajbhandari, Isha. „The Impacts of Oil and Gas Developments on Local Economies in the United States“. The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1500413045323116.
Der volle Inhalt der QuelleOjijiagwo, Emeka Nnanna. „Development of a sustainable framework to manage flare gas in an oil and gas environment : a case study of Nigeria“. Thesis, University of Wolverhampton, 2017. http://hdl.handle.net/2436/620607.
Der volle Inhalt der QuelleJanssen, Josef. „Risk management of investments in joint implementation and clean development mechanism projects /“. Bamberg : Difo-Druck, 2001. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009588954&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Der volle Inhalt der QuelleAbualigaledari, Sahar. „Development of an Anti-Corrosion Thermally Sprayed Coating System for Oil and Gas Transmission Pipeline“. Diss., North Dakota State University, 2018. https://hdl.handle.net/10365/28848.
Der volle Inhalt der QuelleUS DOT Pipeline and Hazardous Materials Safety Administration (PHMSA)
Pereira, Tiago Maciel Soares. „Desenvolvimento de um índice de complexidade para gestão de projectos no Downstream do Oil & Gás : uma aplicação do Macbeth“. Master's thesis, Instituto Superior de Economia e Gestão, 2017. http://hdl.handle.net/10400.5/14557.
Der volle Inhalt der QuelleTendo em vista a criação de um framework para a definição de um índice de complexidade para projetos no setor do Oil & Gas, foi selecionado da Literatura o modelo TOE (Technical-Organizational-Environmental) de Bosch-Rekveldt (2011), desenvolvido para a indústria de Processo. Este framework considera cerca de 50 elementos de complexidade, o que é um número elevado para uma ferramenta que se pretende expedita. O framework TOE foi submetido à avaliação de um painel de especialistas portugueses, através de uma técnica Delphi, para estes selecionarem os elementos mais relevantes, construindo-se um modelo reduzido. Tendo por base esse modelo reduzido e recorrendo à ferramenta MCDA MACBETH foi criada a árvore de valor do índice global de complexidade e sub-índices T-O-E. Em conferências de decisão foram definidos os descritores de impacto relevantes para cada elemento de complexidade e determinadas as escalas dos respetivos níveis de performance, mediante avaliação das suas diferenças de atratividade. O software M-MACBETH calculou os pesos de cada elemento, ficando assim definida a ferramenta/framework pretendidos. A explicitação dos sub-índices de complexidade T-O-E enriquece o modelo, acrescentando outras dimensões ao índice global e permite traçar o perfil do projeto. Essa abordagem ajuda a, por um lado, detetar nas fases iniciais os principais fatores de preocupação de um projeto, e por outro, torna mais fácil ao decisor alocar a cada projeto os gestores/equipas com as competências adequadas. A ferramenta criada foi testada em três projetos do Oil & Gas, tendo explicitado e confirmado a perceção (subjetiva) existente quanto à complexidade dos mesmos.
In order to create a framework that determines the complexity index of projects in the Oil & Gas sector, the TOE (Technical-Organizational-Environmental) model, developed by Bosch-Rekveldt (2011) for the Process industry, was selected from the literature. This framework considers 50 elements of complexity, which is a large number for a tool that is aimed to be simple. The TOE framework was submitted to the evaluation of a panel of Portuguese experts, using the Delphi technique, in order to select its most relevant elements and to define a reduced model. Based on this reduced model and using the MCDA tool MACBETH the value tree of the global index and subindexes T-O-E of complexity were created. In decision conferences, the relevant impact descriptors were defined for each element of complexity and the scales of the levels of performance were determined, by evaluating their attractiveness differences. The M-MACBETH software calculated the weights of each element, thus defining the desired framework. The specification of the sub-indices T-O-E enriches the model by adding other dimensions to the overall index and allowing the project profile to be defined. This approach helps, on the one hand, to detect in the early stages the main factors of concern of the project, and on the other, it makes it easier for the decision maker to allocate the managers / teams with the appropriate skills to each project. The tool created was tested in three Oil & Gas projects, having quantified and confirmed the existent perception regarding their complexity.
info:eu-repo/semantics/publishedVersion
Kalhor, Morteza <1979>. „Clean Development Mechanism and International Negotiations: How will the mechanism under the Kyoto Protocol have impact emissions in the oil and gas sector in oil and gas producing countries“. Master's Degree Thesis, Università Ca' Foscari Venezia, 2012. http://hdl.handle.net/10579/1857.
Der volle Inhalt der QuelleAkin, Manolya. „Turkey’s Foreign Energy Policy andRealist Theory : The Cases of Nabuccoand South Stream Gas Pipeline Projects“. Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-150752.
Der volle Inhalt der QuellePicard, Mathieu. „Development of multiscale models for the performance of the gas and oil seals in rotary engines“. Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/92169.
Der volle Inhalt der QuelleCataloged from PDF version of thesis.
Includes bibliographical references (pages 341-344).
Rotary engines offer higher power density, fewer parts and lower vibrations than conventional reciprocating piston engines. However, rotary engines are more difficult to seal because of the rotor shape which leads to higher gas leakage and oil consumption resulting in lower efficiency and higher emissions. In order to address this problem, this thesis presents a set of multiscale models to assess rotary engine performances by estimating gas leakage, oil consumption, wear and friction. An oil seal multiscale model is developed to estimate internal oil consumption guided by oil transport visualization experiments carried using a laser-induced fluorescence technique. A finite element beam model is used to predict the clearance between the oil seals and the side housing for each crank angle in the cycle. From seal-housing clearance, oil transport through the oil seals is calculated using a control volume approach. The main mechanism leading to internal oil consumption is outward scraping of the oil seals due to a lack in conformability of the seals to the distorted side housing, especially next to the intake and exhaust ports. A set of multiscale models are developed for the performance of the apex and side seals. The models are formulated to couple gas flow to the dynamics and deformation of the seals while accurately describing the interfaces between the seals and their profile and groove. The models are used to predict apex and side seal behavior and understand the mechanisms leading to gas leakage. The main leakage mechanisms identified are leakage through (1) the corner seal clearance, (2) the spark plug holes, (3) the flanks of the seals at high speed, and (4) the side piece corner for the apex seals and at the ends of the side seals. The apex seal model shows good agreement with experiments, especially for the pressure in the apex seal groove. It is the first time such comprehensive models are developed for rotary engines and they will be valuable tools to help design more efficient and environment-friendly rotary engines.
by Mathieu Picard.
Ph. D.
Yang, Guanglin. „Geothermal Development Opportunity and Risk of Using Abandoned Oil-Gas Wells and Mines with MRI tests“. Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amslaurea.unibo.it/25836/.
Der volle Inhalt der QuelleJohnson, Chukwuemeka Eze. „Development of a framework for Integrated Oil and gas Pipeline Monitoring and Incident Mitigation System (IOPMIMS)“. Thesis, University of Wolverhampton, 2017. http://hdl.handle.net/2436/620898.
Der volle Inhalt der QuelleHaigh, Antony Douglas. „Line managers' engagement in support of employees' development : a study within the oil and gas industry“. Thesis, Heriot-Watt University, 2016. http://hdl.handle.net/10399/3170.
Der volle Inhalt der Quelle