Thesis (M.S.)--West Virginia University, 2004. / Title from document title page. Document formatted into pages; contains ix, 80 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 33-34).

More and more transient gas-liquid operations in pipes are being successfully applied in the oil and gas industry. Pigging in two-phase pipelines, to remove liquid accumulation or for cleaning purposes, is an important transient operation. Another important operation is the injection of (-)-as to transport the accumulated liquid in the pipeline to process facilities. Analysis of such transient two-phase flow in a pipeline is necessary not only for designing the liquid and gas handling facilities, but also for safe operating procedure. In pipeline-fiser system such operations cause even more severe changes in flow conditions. A two-fluid model has been developed to determine the transient behaviour of fluids during these operations. The derived one-dimensional set of equations for each flow pattern describe the flow of fluids in all regions. Semi-implicit finite difference schemes were used to solve the initial and boundary value problem for each phase of the process - gas/pig injection, gas shut-in, slug production and gas flow out of the system. An extensive experimental program has been carried out to acquire two-phase transient flow and pigging data on a 67m long, 0.0525m diameter, 9.9m high pipeline-riser system. A computer based data acquisition system has been utilised to obtain rapidly changing and detailed information of the flow behaviour during the transient tests. The model results compare well with the experimental data for characteristics such as inlet pressure, hold-up and pig velocity.

In the offshore oil and gas industry in the UK, one of the most common forms of structure is the fixed steel jacket type of offshore platform. These are highly redundant structures subject to many random or uncertain factors. In particular, they are subject to uncertainties in the load distribution through the components, and to time-varying and cyclic loads leading to deterioration through fatigue. Operators are required to ensure the integrity of these structures by carrying out periodic inspections and repairing when necessary. Decisions on inspection, repair and maintenance (IRM) actions on structures involves making use of various tools and can be a complex problem. Traditionally, engineering judgement is employed to schedule inspections and deterministic analyses are used to confirm decisions. The use of structural reliability methods may lead to more rational scheduling of IRM actions. Applying structural reliability analysis to the production of rational inspection strategies, however, requires understanding the inspection procedure and making use of the appropriate information on inspection techniques. There are difficulties in collecting input data and the interpreted results need to be combined to form a rational global solution for the structure which takes into account practical constraints. The development of a knowledge base system (KBS) for reliability based inspection scheduling (RISC) provides a way of making use of complex quantitative objective analyses for scheduling. This thesis describes the development of a demonstrator RISC KBS. The general problems of knowledge representation and scheduling are discussed and schemes from Artificial Intelligence are proposed. Additionally, a system for automated inspection is described and its role in IRM of platforms is considered. A RISC System integrating suitable databases with fatigue fracture mechanics based reliability analysis within a KBS framework will enable operators to develop rational IRM scheduling strategies.

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This study examines the relationships between entrepreneurial orientation (EO) and four sub-dimensions of corporate governance structures (CGS) in a sample of 173 senior decision-makers representing companies in the South African oil and gas industry. The four attributes of CGS include: board effectiveness and competence, board knowledge and experience, board commitment and recognition of complexities and board involvement in decision-making processes. A series of Canonical correlation analyses assess the strength of relationships between the dimensions of EO and CGS at both univariate and multivariate levels. The results of this study support a positive significant relationship between EO dimensions namely, innovation, proactiveness and risk-taking; and the dimensions of CGS namely, board effectiveness and competence, board knowledge and experience, board commitment and recognition of complexities, and board involvement in decision-making processes. It also indicates a positive link between EO and CGS. The synthesis gleaned from this study is based on the expansive literature review on EO and CGS which provided an insight on the existing knowledge on the relevance of EO in organisational growth and CGS with respect to the nature of the boards, executives and decision-makers roles and responsibilities in strategic entrepreneurial activities within the organisation. This study is of practical use to organisations, enabling them to think and act entrepreneurially, and to policy makers to assist them to keep track of the regulatory guidelines, adopted by boards and executives in monitoring and implementing entrepreneurial culture in their respective organisations. Finally, to researchers and academics, this study allows an extension of knowledge to the EO and CGS and its applicability in one distinct industrial context.

The concept of understanding one’s origin or existence spans across almost every sphere of social science; despite its popularity, there is still a lack of research exploring identity in the work setting of developing countries. This thesis aims to contribute to understanding identity processes of workers in developing countries through the lenses of social identity and post-colonialism. The rationale for using these areas lies in the perceived nature of identity processes for people in developing countries by taking into account historical and cultural influences; for social identity (Tajfel & Turner, 1979), the “prototype” and “cohesion, solidarity and harmony” and for post-colonialism (Sen, 2006; Ekeh, 1975; Ekanola, 2006; Mizuno & Okazawa, 2009), “power”, the “dialectics of the colonized mind” and “social formations”. This thesis takes a socio-psychological approach, which is based on a qualitative research method; in particular, 47 in-depth interviews with professionals from the oil and gas sector of Nigeria form a key aspect of the research method. Findings reveal that social identity theory can be used to interpret the propensity of Nigerians to identify with groups. The thesis finds that social identity captures the importance attached to group identification through an understanding of the drivers and benefits of harmony to the self-concept in the chosen context. However the thesis also finds that social identity but does not cater for other integral aspects of identity processes, such as power and identity struggle. The thesis finds that by addressing the perception of perpetuated colonialism produced by the persistent domination of foreign workers in senior roles and their interaction with indigenous workers, post-colonial theory adequately covers issues of power and struggle. In summary, the thesis finds that the integration of social identity theory and post-colonial theory facilitates a more holistic interpretation of identity processes in regions like Nigeria. Hence this thesis contributes to the literature on identity processes in the work setting of a developing country.

Abstract Background Oil and gas is a main source of revenue for many countries. Norway is one of them. Several companies operate in these countries. The companies demand accounting to communicate to their stakeholders. The two biggest accounting regimes, IASB and USA have their own standards for the upstream activities of those companies. The standard setting bodies mandatorily require companies to comply. Norwegian listed companies, as they are in the IASB regime, must comply with the IASB standard, IFRS 6. Problem  The IASB standard has a problem of addressing the entire upstream activities of the companies Moreover, the standard has conceptual flaw. However, these oil and gas firms are required to follow it. As a remedy, the entities fill the gap by using the US GAAP, if they are listed, as the regulation requires them to follow IFRS. Thus, using these two standards coupled with the defect of the IASB standard is affecting them. Purpose The purpose of this thesis is to explain the effects of IFRS 6 on companies by comparing it with the US GAAP standard. In doing so, theories relevant to the issue are described and the technical gaps between the two standards are elaborated. Method  This thesis uses mixed method. The research design followed is concurrently mixing quantitative and qualitative methods. However, qualitative method dominates in the mixing. As a data collection mechanism, interview, questionnaire and documentation i.e. the annual reports of the companies are used. In the study both deductive and inductive reasoning are used. Conclusion Subsequent to making the study, the author concludes that the surveyed companies have used the US GAAP to fill the gap that IFRS possess. However, retaining two sets of accounts has economic effect and the companies are paying for that. Moreover, they expend costs for adopting the IFRS when they change their standard from US GAAP to IFRS. Moreover, it is difficult to make conclusion about diffusion of accounting method due to contagion effect. Similarly, although previous studies show that size of a firm is a determinant factor, it is tricky to make conclusion on the studied companies.

Thesis (Professional Degree)--University of Missouri, School of Mines and Metallurgy, 1922. / The entire thesis text is included in file. Typescript. Title from title screen of thesis/dissertation PDF file (viewed March 17, 2010) Includes bibliographical references (p. 48).

Exploration, production and marketing of oil and gas by listed Nigerian oil and gas companies are fraught with lots of negative social and environmental impacts. Corporate social disclosure is a medium employed by corporations to communicate their impacts and commitments to the society and environment. Therefore, the main aim of this study is to describe and explain social and environmental disclosure practices by listed Nigerian oil and gas companies as gauged with disclosure by listed UK oil and gas companies for the period 2004-2013. The objectives are to determine the nature of disclosures by sampled companies, measure and analyse quantity and quality of the disclosures, analyse trends of the disclosures, find out differences in the disclosures and to explore the effects of corporate characteristics on the disclosures. Content analysis of annual reports and accounts and sustainability reports, scoring quality of disclosures based on Global Reporting Initiative disclosure guidelines, two samples t-tests and Panel Corrected Standard Errors (PCSE) regression analysis were employed to achieve the aim and objectives of the study. Legitimacy debate and vulnerability and exploitability analytical framework were espoused to develop a theoretical framework to underpin the study. Results indicate Nigerian companies making disclosure on fewer social and environmental aspects than UK companies. Quantity and quality of disclosure by Nigerian companies are low compared to UK companies. While quantity of disclosure by both showed increasing trends, quality of disclosure depicted decreasing trends. Sampled companies are found complying with mandatory social disclosure. Corporate size, leverage, efficiency and liquidity are found significant in explaining disclosures by sampled companies. Low quantity and quality of disclosure by listed Nigerian oil and gas companies is indicating low social accountability. This result may be useful to policy makers in the industry to dialogue with managers of the companies on the importance of their social accountability to overall national sustainable development efforts. Likewise, policy makers may put in place regulatory and enforcement mechanisms on social disclosures as mandating disclosure is found effective. Disclosure practices by listed Nigerian oil and gas companies portrayed the significance of colonial relationship between Nigeria and the UK. The use of modified words counts content analysis, and the theoretical framework that underpins the study might be of significance in this study in particular and social disclosure studies in general.