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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
151

[en] SELECTION OF LOGISTICS PROJECTS OF A COMPANY IN OIL AND GAS INDUSTRY / [pt] SELEÇÃO DE PROJETOS DE LOGÍSTICA EM UMA EMPRESA DA INDÚSTRIA DE ÓLEO E GÁS

05 November 2021 (has links)
[pt] Em um cenário mundial de intensa competição, com indústrias cada vez mais complexas e dinâmicas, a tomada de decisão se tornou um fator chave que muitas vezes pode determinar a sobrevivência e o sucesso de uma empresa. A indústria do petróleo possui investimentos anuais na ordem de bilhões de dólares e por isso toda decisão é considerada vital para esta indústria. Em função da grande quantidade de projetos sendo estudados e propostos, tanto de ampliação quanto de manutenção da estrutura das empresas, do alto valor de cada um e da restrição orçamentária de cada empresa, a tomada de decisão é um passo importante e complexo, devido às inúmeras variáveis e restrições envolvidas. Esta dissertação elabora uma proposta de método de apoio para o processo de tomada de decisão usado na seleção de projetos de investimento em logística de uma grande empresa do setor de óleo e gás. Na maioria das vezes, os critérios utilizados para a tomada de decisão na seleção de projetos consideram apenas os aspectos financeiros, sem levar em consideração outros critérios, que são abordados nesse trabalho. Em função da importância dos projetos e da quantidade de variáveis envolvidas durante a seleção e priorização deles, esse trabalho utiliza o método AHP (Analytic Hierarchy Process) Simplificado e os conceitos de Programação Linear Inteira Mista (PLIM) para determinar os projetos prioritários e otimizar a satisfação do grupo tomador de decisão. Foram estudados seis dos principais projetos da empresa, que juntos somam, aproximadamente, 2,7 bilhões de doláres e representam quase 80 por cento da carteira da área de logística da empresa estudada. Este estudo possibilitou uma seleção mais eficaz, resultando em uma maior integração entre os tomadores de decisão e um maior conhecimento sobre cada um dos projetos avaliados. / [en] In a global scenario of intense competition with increasingly complex and dynamic industries, decision-making has become a key factor that can often determine the survival and success of a company. The oil and gas industry has annual investments of billions of dollars and every decision is considered vital for this industry. Due to the large number of projects being proposed and studied, involving both expansion and maintenance of business structure, the high value of each and the budget constraint of each company, the decision-making is important and complex, due to numerous variables and constraints involved. This dissertation develops a proposed method of support to the process of decision making used in the selection of logistics investment projects, in a large company in the oil and gas industry. In most cases, the criteria used for decision making in project selection only considers the financial aspects, without taking into account other ones, which are addressed in this work. Due to the importance of the projects and the amount of variables involved when selecting and prioritizing them, this work uses the Simplified AHP (Analytic Hierarchy Process) and concepts of Mixed Integer Linear Programming (MILP) to determine priority projects and optimize the satisfaction of the decision-making group. Six of the main projects of the enterprise were studied, which together sum up to approximately 2.7 billion dollars and represent almost 80 per cent of the logistics portfolio of the studied company. This study allowed a more effective selection, resulting in a greater integration between decision makers and a greater knowledge of each of the evaluated projects.
152

The Use of Mediation and Mediative Elements to Improve the Integration of the Human Factor in Risk Assessments in Order to Enhance the Safety in the International Oil and Gas Industry

Kinzel, Holger 26 June 2017 (has links)
The work of an engineer is closely intertwined with safety. An engineer’s perception of the “safety” task is traditionally inherent in his or her design. However, in the technical world most machines and systems designed by engineers contain a human element, which engineers have to consider in their work. In the oil and gas upstream industry – especially drilling, production and workover operations – petroleum engineers (including drilling and production engineers) are responsible not only for design but also for operational and organizational aspects. The human factor becomes more important in complex offshore operations. Incorporating safety into a sys-tem design requires identifying, analyzing and evaluating risks and ensuring that any not accounted for are taken into consideration. This process requires communication among everyone involved in the process. Analysis of accidents in the oil and gas industry shows that often a lack of that communication led to incident triggering events. In this thesis, the author proposes a novel communication model that improves this exchange of information and supposedly makes the process of risk assessment more effective. In addition, the new model also incorporates factors such as emotions, feelings, needs and imagination into the risk assessment process. This broadens the information base for the risk identification and analysis and creates an atmosphere of psychological ownership for the stakeholders in the process, which leads to a perceived safety climate in the organization where the new model is applied. The innovative communication or consultation model, as it is also referred to in risk assessments, is based on a structured process used in conflict resolution called mediation. Mediation is an alternative conflict resolution process that is centered on mutual under-standing and listening to each other’s needs. The process is composed of elements that characterize it. These elements of mediation are used to assess other communication processes and to develop new communication models. The application of the elements of mediation and the safety-mediation consultation into the risk assessment process enables this process to be enhanced with human factors such as emotions, feelings, intuition and imagination. The inclusion of all stakeholders creates psychological ownership, improves communication, enables organizational learning and expands the knowledge base for risk analysis. The applicability of the safety-mediation consultation process for a human factor-based risk assessment is presented and tested using illustrative examples and field cases from the international oil and gas industry. Possible concerns and limitations are also discussed. This thesis shows that mediation and elements of the mediation process can be applied to improve communication in the international oil and gas industry. This is facilitated by educated safety mediators, who help the petroleum engineer and operational crew on a drilling rig to achieve a better understanding by ensuring that they hear and fully register each other’s needs.
153

[en] ENVIRONMENTAL LICENSING IN THE OFFSHORE OIL AND GAS INDUSTRY IN BRAZIL: A NOT VERY CLEAR REGULATION FOR THE PROTECTION OF THE ENVIRONMENT / [pt] O LICENCIAMENTO AMBIENTAL NA INDÚSTRIA PETROLÍFERA OFFSHORE NO BRASIL: MA REGULAMENTAÇÃO POUCO ELUCIDATIVA PARA A PROTEÇÃO AO MEIO AMBIENTE

CAROLINE SOARES DE SOUSA FIGUEIREDO 06 December 2022 (has links)
[pt] O licenciamento ambiental na indústria petrolífera offshore no Brasil é o tema dessa dissertação. A questão do licenciamento ambiental para a produção do petróleo e gás na indústria e as possibilidades de se evitar, ao máximo, adversidades que possam degradar o meio ambiente foi o objetivo central desta pesquisa descritivo exploratória A natureza produz o petróleo e gás, mas, como usufrui-lo sem acarretar problemas à própria natureza que o produz? A regulamentação brasileira supõe essa questão? A da preservação da natureza? Analisou-se o processo de licenciamento ambiental para a execução da extração do petróleo e gás no Brasil e, ao mesmo tempo, outras referências mundiais, representadas pelos países: Canadá, Austrália, EUA e Noruega. Após essa análise viu-se que no Brasil o momento ainda é incipiente no desenvolvimento legal no que se refere a regulamentação geral; percebe-se contradições nas legislações pertinentes e a falta de clareza e objetividade (especificidades) no que se almeja regulamentar. Vale dizer, uma legislação pouco esclarecedora e confusa. Conclui-se que o caminho para a diminuição da degradação ambiental na exploração do petróleo e gás, exige, na prática, leis que ampliem e assegurem clareza, principalmente, na preservação do meio ambiente. Falta a definição desse caminho, ou seja, um roteiro explícito dos procedimentos legais necessários a aquisição desse licenciamento. Respeitar a natureza - o meio ambiente, e não somente explorá-lo sem medir as consequências negativas a este meio, deve ser o compromisso de todos os envolvidos. / [en] The main objective of this research was to discuss the environmental licensing in the offshore oil industry in Brazil by its laws and regulations and, at the same time, to have the possibility to avoid, as much as possible, adversities that could degrade the environment. Specifically, an attempt was made to understand the process of its regulation and other world references to understand the functioning of environmental licensing (environmental laws) for the execution of oil and gas extraction, represented by the countries: Canada, Australia, USA, and Norway; and point out necessary advances in environmental laws in preservation actions. In this descriptive exploratory research, the analysis focused on the environmental licensing process in Brazil in the offshore Oil and Gas industry, giving relevance to data for analysis of the bodies involved in the environmental licensing process; procedures and requirements for the offshore Oil and Gas Industry; laws and regulations in the offshore oil industry in Brazil and, finally, some information about the National Petroleum Agency (ANP) and its bidding and concession of exploratory blocks. And how does this interaction occur in other countries. The environmental licensing process is, in a way, old, vast and takes place from the prevention of deforestation established by the Forest Code in 1965 and in the authorizations for hunting and fishing in forests. However, at this time only a simple request was required to obtain authorization to carry out the activities. Law No. 6938 from 1981, which established the National Environmental Policy in Brazil, registered a regulatory milestone in the country s environmental legislation.
154

Thermodynamics and Kinetics of Hydrogen Sulfide Corrosion of Mild Steel at Elevated Temperatures

Gao, Shujun 01 October 2018 (has links)
No description available.
155

Managing political risk : corporate social responsibility as a risk mitigation tool. A focus on the Niger Delta, southern Nigeria

Moen, Siri 03 1900 (has links)
Thesis (MA)--Stellenbosch University, 2012. / ENGLISH ABSTRACT: The petroleum industry concern itself with natural resource extracting activities which are highly sensitive for contributing to environmental degradation by oil spills or gas flaring. A large proportion of the world’s oil and gas reserves is located in developing countries where the presence of multinational oil corporations (MNOCs) is high as host countries often lack the infrastructure needed or are financially unable to conduct extracting operations on their own. The Niger Delta in southern Nigeria has one of the largest oil reserves in Africa and is one of the world’s leading oil exporters. MNOCs like Shell, Chevron, Total, ExxonMobil and Statoil are some of the firms present in the Niger Delta region. The oil-rich area in the developing country poses high levels of political risk for the MNOCs. Local grievances, paired with environmental degradation and human rights violations by the oil companies, have led to a tense relationship between the local stakeholders and the MNOCs, with so-called petro-violence at the center of the oil conflict. Frequently, oil installations are sabotaged and crude oil is stolen, causing major financial losses for the firms, and armed attacks on oil facilities and kidnapping of MNOCs’ staff constitute the majority of political risks facing MNOCs operating in the Niger Delta. This study investigates how MNOCs can successfully manage such political risks, providing a business advantage in a challenging business environment. By addressing the companys’ own behaviour, the research analyses if social engagement through corporate social responsibility (CSR) can mitigate political risk in the Niger Delta. The study looks at two different MNOCs operating in the Niger delta, Shell and Statoil, and scrutinises their methods of implementation of their CSR initiatives. The difference in approaches to CSR is elucidated where Shell claims it has repositioned its approach from a top-down angle during the first years of conducting CSR projects, to a more stakeholder-oriented approach. Yet, their approach is still found to carry elements of the previous top-down approach, and has not resulted in satisfactory performance in relation to stated goals. Statoil undertakes a stakeholder-oriented bottom-up approach, executed with a high level of commitment. The stated CSR goals have to a great extent been met. By assessing the two companies’ CSR strategies in relation to the frequency of political risks experienced by each MNOC, the study finds that CSR has the potential to mitigate political risk depending on the approach to implementation, and could serve as a political risk management strategy. / AFRIKAANSE OPSOMMING: Die brandstofbedryf is betrokke by die ontginning van natuurlike hulpbronne, ’n aktiwiteit wat hoogs sensitief is vir sy bydrae tot omgewingsbesoedeling as gevolg van storting van olie en opvlamming van gas. ’n Baie groot deel van die wêreld se olie en gas reserwes word aangetref in ontwikkelende lande. Die teenwoordigheid van Multinasionale Olie Korporasies (MNOKs) in hierdie lande is groot omdat daar gewoonlik ’n gebrek aan toepaslike infrastruktuur is en die lande ook nie finansieel in staat mag wees om die ontginning op hulle eie te doen nie. Die Niger Delta in die Suide van Nigerië beskik oor een van die grootste olie reserwes in Afrika en is een van die voorste olie uitvoerders in die wêreld. Shell, Chevron, Total, ExxonMobil en Statoil is van die bekende MNOK wat ontginning doen in die Niger Delta gebied. Die olieryke gebiede in ’n ontwikkelende land kan groot politieke risiko vir die MNOKs inhou. Plaaslike griewe gekoppel aan omgewings besoedeling en menseregte skendings deur die oliemaatskappye het gelei tot ’n gespanne verhouding tussen hulle en die plaaslike belange groepe, en sogenaamde “petrogeweld” staan sentraal hierin. Heel gereeld word olie-installasies gesaboteer en ru-olie word gesteel, wat natuurlik groot finansiële verliese die firmas inhou. Daarby word gewapende aanvalle op die olie-installasies uitgevoer en van die MNOKs se personeel ontvoer. Al hierdie dinge vorm die groot politieke risiko’s wat die MNOKs in die Niger Delta in die gesig staar. Hierdie studie ondersoek hoe die MNOKs met welslae hierdie politieke risiko’s kan teenwerk om vir hulle ’n suksesvolle besigheid te vestig in ’n baie mededingende bedryfsomgewing. Deur te kyk na die maatskappy se eie gedrag, sal die navorsing analiseer of gemeenskapsbetrokkenheid deur korporatiewe sosiale verantwoordelikheid (KSV) die politieke risiko in die Niger Delta kan temper. Die studie kyk na twee verskillende MNOK wat in die gebied bedryf word, Shell en Statoil, en kyk noukeurig na die manier waarop hulle KSV inisiatiewe toegepas word. Die verskil in benadering tot die probleem word toegelig deur die feit dat Shell beweer dat hulle ’n bo-na-onder benadering in die beginjare van KSV projekte verander het na ’n beleid waar meer na die betrokkenheid van belangegroepe gekyk word. Tog word gevind dat daar nog oorblyfsels is van die bo-na-onder benadering en dat doelwitte wat gestel is nie bevredigend bereik is nie. Statoil daarenteen. Implementeer ’n onder-na-bo benadering met betrokkenheid van belangegroepe en ’n hoë vlak van toewyding deur die maatskappy. Die gestelde KSV doelwitte is grootliks behaal. Deur te kyk na die twee maatskappye se ervaring van politieke risiko in verhouding met hulle KSV strategieë bevind hierdie studie dat KSV wel die potensiaal het om, as dit suksesvol toegepas word, politieke risiko te temper en dus kan die as ’n strategie om sodanige risiko te bestuur.
156

Regula??o do livre acesso no transporte de g?s natural ? luz da ordem econ?mica da Constitui??o de 1988 / Open access regulation to natural gas pipelines according to Brazilian constitutional economic order

Silva, Anderson Souza da 23 April 2007 (has links)
Made available in DSpace on 2014-12-17T14:27:30Z (GMT). No. of bitstreams: 1 AndersonSS.pdf: 411955 bytes, checksum: 5e1635b0c0478f712655188f802072b8 (MD5) Previous issue date: 2007-04-23 / In the middle of modern social changes produced by globalization and capitalism, several markets have changed. States have left the direct coordination of these markets (chiefly public utility sector in the form of monopolies), introducing regulation in order to promote competition. These changes have affected natural gas industry by promoting competition as a key factor to the development and the increase of firms in this market. The regulatory reform of natural gas industry ocurred in EUA and Europe Union and it has produced its first results. In Brazilian context, Constitutional Amendment nbr. 09 and Federal Law nbr. 9.478/97 ( Petroleum Law ) opened the natural gas market to a broad range of private economic agents and they finished the monopoly over the industry before managed by Petrobras. The new regulatory framework of Brazilian natural gas industry has designed competition as a central element to the new form of managment of business and contractual relationships of this industry. Among the regulatory instruments, open access regulation in natural gas pipelines is directed to promote competition. The questions arised about its implementation in Brazilian context are studied in the present work, in which it is discussed the constitutional rules and principles are to be applied to the open access regulation within the theme of statal regulation of economy present in constitutional economic order / No movimento de mudan?as sociais capitaneados pelo capitalismo global e pelo discurso neoliberal, t?m sido promovidas no mundo reformas nos chamados setores de infra-estrutura (antes geralmente geridos de forma direta pelo Estado sob a forma de monop?lios) no sentido de se introduzir uma regula??o que promova a concorr?ncia. Desses setores a industria do g?s natural vem sofrendo reformas institucionais relevantes que procuram retirar-lhe caracter?sticas monopol?sticas e permitir, dessa maneira, o aumento dos agentes nesse mercado. Em alguns paises essas transforma??es na industria do g?s natural encontram j? seus resultados (EUA e Uni?o Europ?ia). O Brasil tem promovido reformas no setor de g?s desde a Emenda Constitucional n? 09 e a Lei 9.478/97, abrindo as portas do mercado brasileiro de petr?leo e g?s para os investimentos privados, criando um cen?rio onde a Petrobr?s n?o est? mais sozinha na execu??o de atividades da cadeia do petr?leo e g?s natural. Acabou-se, assim, com o monop?lio da execu??o das atividades da industria do petr?leo e g?s (foi mantido o monop?lio da titularidade), passando-se a introduzir nesses setores a interven??o pela regula??o, a regula??o econ?mica. Dentre as pautas de regula??o importante da ind?stria do g?s natural encontra-se o chamado livre acesso (open access) aos gasodutos de transporte, fazendo-se pensar a regula??o do livre acesso ? luz da ordem econ?mica da nossa Constitui??o e projetar as rela??es entre Estado e Economia, buscando desenhar o conjunto de regras e princ?pios que orientam a a??o reguladora e fundamentam a possibilidade constitucional do controle de estruturas pelo livre acesso no segmento de transporte de g?s natural
157

Ozone Pollution of Shale Gas Activities in North Texas

Ahmadi, Mahdi 05 1900 (has links)
The effect of shale gas activities on ground-level ozone pollution in the Dallas-Fort Worth area is studied in detail here. Ozone is a highly reactive species with harmful effects on human and environment. Shale gas development, or fracking, involves activities such as hydraulic fracturing, drilling, fluid mixing, and trucks idling that are sources of nitrogen oxides (NOX) and volatile organic compounds (VOC), two of the most important precursors of ozone. In this study two independent approaches have been applied in evaluating the influences on ozone concentrations. In the first approach, the influence of meteorology were removed from ozone time series through the application of Kolmogorov-Zurbenko low-pass filter, logarithmic transformation, and subsequent multi-linear regression. Ozone measurement data were acquired from Texas Commission on Environmental Quality (TCEQ) monitoring stations for 14 years. The comparison between ozone trends in non-shale gas region and shale gas region shows increasing ozone trends at the monitoring stations in close proximity to the Barnett Shale activities. In the second approach, the CAMx photochemical model was used to assess the sensitivity of ozone to the NOX and VOC sources associated with shale oil and gas activities. Brute force method was applied on Barnett Shale and Haynesville Shale emission sources to generate four hypothetical scenarios. Ozone sensitivity analysis was performed for a future year of 2018 and it was based on the photochemical simulation that TCEQ had developed for demonstrating ozone attainment under the State Implementation Plan (SIP). Results showed various level of ozone impact at different locations within the DFW region attributed to area and point sources of emissions in the shale region. Maximum ozone impact due to shale gas activities is expected to be in the order of several parts per billion, while lower impacts on design values were predicted. The results from the photochemical modeling can be used for health impact assessment and air quality management purposes. Both studies in this research show that the impact of shale gas development on local and regional level of ozone is significant, and therefore, it should be considered in the implementation of effective air quality strategies.
158

A study of the impact of unconventional sources within a large urban area: evidence from spatio-temporal assessment of volatile organic compounds.

Matin, Maleeha 05 1900 (has links)
Conventional sources of emissions have been a prime target for policymakers in designing pollution control strategies. However, the evolution of shale gas activities is a growing concern over the impact of unconventional sources on urban and regional air quality. Owing to the development of Barnett Shale production, the fast-growing Dallas-Fort Worth (DFW) metroplex has encountered both types of these emissions. Oil and gas activities result in emissions of ozone precursors, notably volatile organic compounds (VOC). The major objective of this study was to evaluate the spatio-temporal distribution of VOC in order to highlight the influence of unconventional emissions. The study utilized measurements from automated gas chromatography (AutoGC) monitors to analyze the patterns of the total non-methane organic compounds (TNMOC) and relative contributions from marker species of traffic versus oil and gas activities. In this study, data from 2001-2014 was obtained from the Texas Commission on Environmental Quality (TCEQ) for fifteen monitoring sites within the North Texas region. With over a thousand wells in a 10 mile radius, two of the rural sites measured twice as much TNMOC as compared to the urban site in Dallas. Source apportionment analysis was conducted using Positive Matrix Factorization (PMF) technique. The target site located in the urban zone resolved an eight factor model. Natural gas signature was the dominant source of emission with a 52% contribution followed by 31% from two separate traffic-related sources. Considering ethane to be the dominant species in oil and gas emissions, it was observed that the rising ethane/NOx ratio correlated with increasing annual average ozone post-2007. In this period, higher concentration of ozone was found to be associated with stronger winds from the Barnett Shale area – a region that did not seem to contribute to high ozone during 2001-2007. With traffic emissions having flattened over the years, the recent increase in oil- and gas-related emissions has a negative impact on the air quality in this area. Results indicate that the area has failed to observe a declining trend in ozone despite effective reductions in NOx and traffic-related VOC emissions. The findings of the study would be helpful in proper evaluation of the ozone-forming potential of unconventional VOC emissions. Although these emissions may not be strong enough to cause harm through direct exposure, underestimating their potential towards ozone formation could hinder the progress in ozone attainment in growing urban areas. After all, a major portion of the study area continues to be in nonattainment of the EPA designated ozone standards. The study therefore draws the attention of policymakers towards the new influx of emissions that have emerged as a powerful source within the DFW metropolitan area.

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