Foraminíferos de manguezais do rio Curimataú (RN): estudos sinecológicos com aplicação no setor de petróleo e gás

O sistema estuarino do Rio Curimataú, uma planície lamosa amplamente coberta por vegetação de mangue e relativamente pouco impactada, foi estudado quanto à distribuição espacial da microfauna de foraminíferos e suas condicionantes. Vinte e cinco gêneros e quarenta espécies foram identificadas a partir dos sedimentos superficiais, considerando-se os indivíduos vivos e mortos presentes em 10 pontos ao longo do estuário, dos quais se extraíram ao menos 100 espécimes por amostra. O sistema pôde ser compartimentado em quatro sub-ambientes halínicos (hiperhalino, mesohalino, polihalino e euhalino), correspondentes, respectivamente, a quatro ecofácies de foraminíferos designadas de Ammotium spp., Miliammina fusca, Arenoparrella mexicana e Ammonia spp. Cada um destes segmentos ambientais foi caracterizado segundo os padrões de riqueza, diversidade e equitatividade das espécies. Os resultados deste estudo poderão servir para comparações a serem feitas com outros estuários tropicais modernos (impactados antropicamente ou não) e antigos. Tem aplicação, portanto, no setor de petróleo e gás, sendo de interesse às atividades de gestão ambiental de áreas litorâneas e de investigação da história geológica das bacias sedimentares

Ergonomia e design de vestimentas ocupacionais no Brasil: foco em equipamentos de proteção individual no setor de petróleo e gás

Pós-graduação em Design - FAAC

Desenvolvimento de tubo ARBL contendo 1Cr 0,2Mo fabricado pelo processo ERW/HF destinado à indústria de petróleo e gás

Pós-graduação em Engenharia Mecânica - FEG

Impactos de atividades de exploração de petróleo e gás natural sobre a comunicação acústica de Mysticeti (ordem Cetacea): uma revisão

Acoustic communication is essential in mammals and has three main functions: acquisition of information about the environment, intraspecific communication and detection of predators and prey. Studies indicate that the introduction of sounds produced by anthropogenic activities such as military exercises, use of sonar and activities related to the extraction of oil and natural gas can cause interference in cetacean communication. Recently, the discovery of pre-salt tends to increase these activities. After a decade since the launch date of IBAMA`s licensing and before the imminent increase in exploration activities in Brazil, it is essential to conduct studies to monitor closely the impact of this type of activity on the marine ecosystem. Thus, this study aims to identify potential impacts that the process of oil and natural gas exploration and production might have on the communication of baleen whales. Data from literature on bioacoustics and ecology of these animals were linked with technical-scientific data regarding this type of activity. 310 documents related to the topic were analyzed. Among them only 81 documents are of academic origin, and the others mostly action plans and reports from government agencies. 80% of the documents do not have any species as a focus, and in the remaining 20%, 17% were focused on the Greenland Whale (Balaena mysticetus) and 22% on the gray whale (Eschrichtius robustus). The main impacts identified in this study were the increased frequency and amplitude of vocalization, reduction or cessation of more elaborate songs and masking problems

Características do aço API X70 utilizado em tubos de transporte de petróleo e gás

Having in mind that petroleum's history presents a huge growth, the exploration and production areas have been receiving lots of investments, in order to attend the increasing demand for gas and petroleum. Looking through that scenario, new technologies have been evolving in favor of discovering new natural petroleum deposits and act with effectiveness in truly deep waters without giving up the worldwide best operational security practices. The use of rigid pipes in marine installations have been rising quickly and, thanks to this reality, the many storage and pipe launching forms became study objects and are getting improved. The analysis of steel API X70 characteristics, proving that they are suitable for use in pipes developed to transport gas and petroleum is the theme of this presentation. A tensile test was conducted to determine the base metal's mechanical properties, draining's tension, traction's resistance, elasticity's modulus and maximum tension. An aspect that is concerning too is the metallographic analysis, in order to determine the studied iron's microstructure. Results of analyzes showed that the steel has high resistance, with good capacity for deformation and well defined yield point, concluding suitable for the application in question

Estudo do efeito Bauschinger em tubos de aço API 5l x70 aplicados no transporte de petróleo e gás

Despite the growing concern in seeking more sustainable energy sources, oil demand is likely to grow in coming years. To keep up with this growth, the oil industry has increasingly invested in innovation and efficiency. Knowing that, new technologies have been developed to explore deeper waters, without giving up the best practices in worldwide operational safety. The use of rigid pipelines in deepwater offshore facilities is increasing quickly and because of this, the ways of storing and launching pipe have been studied and perfected. In this paper the Bauschinger effect on API 5L X70 steel was analyzed proving that there was a reduction in yield strength when an effort was applied in a previous direction, then an effort was then applied in the opposite direction. To observe this phenomenon, the tensile test was conducted to determine the mechanical properties of the base metal, such as yield stress, tensile strength, elasticity and maximum tensile, so then compare it with the results obtained in the Bauschinger Effect Test. The analysis results showed that the steel had high resistance, with good plastic deformation capacity without failing, well-defined yield point, showing itself appropriate for the operation of oil and gas pipes

Modelagem e simulação de sistemas de geração de energia para o setor de petróleo e gás

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise microestrutural de tubos API P110, para prospecção de petróleo e gás, soldados pelo processo HF/ERW

On the grounds of the great advances achieved over recent years, the process HF/ERW (High-Frequency/Electric Resistance Welding)welded pipe have played an active role in the oil and gas industry for deep water applications, at high and extremely low temperatures, under high pressure and in highly corrosive environments, gradually replacing manufactured pipes by other processes. However, studies have shown that defects in the welded joints are a the leading causes of pipelines failures, which has required the determination of toughness values in this region, in compliance with the strict recommendations of the codes and standards with manufacturers and construction companies, on the oil and gas sector. As part of the validation process required toughness values, this research project focuses on a microstructural analysis in HF / ERW tubes microalloyed, steel grade API 5CT P110, designed to explore oil and gas in deep waters, the subject of strategic relevance to the country because of the recent discoveries in the Santos mega fields: Tupi and Libra (pre-salt). In this scientific work will be presented and discussed the results of mechanical tensile and Charpy, a few CTOD tests curves (showing the trend of toughness values to be obtained), and the microstructures of the base material obtained by optical microscopy, with special emphasis on the formation of nonmetallic inclusions in the welded joint

Avaliação da tenacidade em um aço microligado, grau API, para aplicação em linhas dutoviárias de petróleo e gás

In order to study the mechanical properties of micro alloyed steel API 5L X70, a material used to manufacture pipes for pipeline transportation lines for use in oil and gas, a study was made of toughness, tensile strength, impact strength, hardness and microstructure steel. To perform these various tests were made where they can acquire the characteristics of the material. Were performed at the Faculty of Engineering in Guaratinguetá in the Department of Materials and Technology and the tensile tests, Charpy impact test, metallography and hardness testing of material API 5L X70, all tests were done with the help of technical laboratories. With these data can be an analysis of the material about his tenacity, his toughness and fragility, its hardness, its yield strength and its maximum voltage. After being asked the analyzes discussed the results showed that the micro alloyed steel API 5L X70 steel is a very tenacious, it absorbs impact energy of 300 Joules though without a break for the full body of evidence showing its tenacity

Análise microestrutural de tubos API N80 soldados pelo processo HF/ERW para prospecção de petróleo e gás

On the grounds of the great advances achieved over recent years, the process HF/ERW (High-Frequency/Electric Resistance Welding)welded pipe have played an active role in the oil and gas industry for deep water applications, at high and extremely low temperatures, under high pressure and in highly corrosive environments, gradually replacing manufactured pipes by other processes. However, studies have shown that defects in the welded joints are a the leading causes of pipelines failures, which has required the determination of toughness values in this region, in compliance with the strict recommendations of the codes and standards with manufacturers and construction companies, on the oil and gas sector. As part of the validation process required toughness values, this research project focuses on a microstructural analysis in HF / ERW tubes microalloyed, steel grade API 5CT N80, designed to explore oil and gas in deep waters, the subject of strategic relevance to the country because of the recent discoveries in the Santos mega fields: Tupi and Libra (pre-salt). In this scientific work will be presented and discussed the results of mechanical tensile and Charpy, a few CTOD tests curves (showing the trend of toughness values to be obtained), and the microstructures of the base material obtained by optical microscopy, with special emphasis on the formation of non-metallic inclusions in the welded joint

Diretrizes para execução dos estudos geológico-geotécnicos e ambientais voltados à implantação de dutovias

Due to the new discoveries of oil and gas reservoirs, and also the increasing production of bio-fuels, the brazilian general pipeline system is being vertiginously extended. On the other hand, there is a lack of clear parameters that would allow a better utilization of the geological-geotechnical studies in the process of environmental licensing of pipeline systems. Therefore, this paper presents guidelines that would orientate the environmental licensing procedures to build pipeline systems, and also the geological-geotechnical studies that would support the characterization of the physical context. The method applied in this study consisted in the existing data survey and in their organization, analysis and review. In doing so, there is a well-subsidy integration of the many steps of the pipeline system implementation, the required environmental licenses and the investigation methods of the correlated physical context. As a result, it’s presented a flowchart of the guidelines, detailing the interaction between the environmental licensing, the geological-geotechnical studies and the phases of the pipeline’s project.

Práticas de gestão da cadeia de suprimentos e seus eventuais relacionamentos com as prioridades competitivas da produção: evidências empíricas do setor eletroeletrônico à luz de modelagem de equações estruturais

Este artigo tem como objetivo identificar as práticas de gestão da cadeia de suprimentos que estão sendo adotadas no setor eletroeletrônico brasileiro e verificar se as prioridades competitivas da produção das empresas desse setor se relacionam com a adoção de tais práticas. Desenvolveu-se uma pesquisa empírica, de cunho quantitativo, a partir da realização de uma pesquisa survey por e-mail com gerentes de empresas do setor eletroeletrônico da Associação Brasileira da Indústria Elétrica e Eletrônica. Técnicas estatísticas descritivas e multivariadas de segunda geração (modelagem de equações estruturais) foram empregadas para analisar os dados obtidos. Como principais resultados deste artigo destacam-se: a) as práticas de gestão da cadeia de suprimentos que estão sendo mais implantadas são voltadas à integração e apoio das atividades de desenvolvimento de produtos com os clientes; e b) não foram verificadas relações significativas entre as prioridades competitivas das empresas estudadas e a adoção de práticas de gestão da cadeia de suprimentos.

Redução das emissões de gases efeito estufa no processo de fabricação do sinter

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Desafios tecnológicos na exploração de petróleo em águas profundas: o sistema PETROBRAS de inovação

Pós-graduação em Economia - FCLAR

Foraminíferos em um transecto de manguezal da Ilha do Cardoso (SP): distribuição em função da frequência de inundação e modelos para reconstruções paleoambientais no setor de petróleo & gás

O estudo do conteúdo de foraminíferos de 8 amostras de sedimentos superficiais coletados em manguezal do norte da Ilha do Cardoso, sul do Estado de São Paulo, no verão (período chuvoso) de 2001, ao longo de um transecto no sentido da Baía de Trapandé para o interior, revelou dois segmentos distintos: a) uma planície inferior lamosa, com menor tempo de exposição sub-aérea e maior diversidade específica, dominada por Ammotiumcassis, A.salsum, Arenoparrella mexicana e Trochamminainflata, com abundância expressiva de Caroniaexilis na parte mais baixa e de Miliammina fusca na parte mais alta; b) uma planície superior arenosa, com maior tempo de exposição sub-aérea e menor diversidade, dominada por M. fusca e com abundância expressiva de T. inflatana parte mais baixa. Os sedimentos investigados são colonizados por foraminíferos exclusivamente aglutinantes, representados por 21 espécies de 16 gêneros. Dados de abundância relativa, riqueza, diversidade e equitatividade das espécies ao longo do transecto são apresentados, bem como os valores de salinidade, pH, oxigênio dissolvido e temperatura, medidos a partir da água intersticial dos sedimentos no momento da coleta das amostras. São feitas comparações com um estudo anterior, similar, que focalizou amostras coletadas, nos mesmos pontos, no inverno (período seco) de 2002. Os resultados obtidos interessam às análises de sistemas estuarinos modernos e antigos, bem como a projetos envolvidos com o diagnóstico do estado de conservação de áreas litorâneas, sendo úteis ao Setor de Petróleo e Gás