Oil Leak
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. NUMERICAL MODELING OF LEAK OFF TEST IN OIL WELLS / MODELAGEM NUMÉRICA DO ENSAIO DE LEAK OFF EM POÇOS DE PETRÓLEO
Em operações de perfuração, é importante ter uma estimativa do gradiente de fratura de determinada formação, como o objetivo de poder estimar o máximo peso da lama necessária para a próxima seção da formação rochosa, antes de colocar o revestimento. Por esse motivo, são realizados ensaios de Leak-Off para determinar a máxima pressão que a no
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/11/2011
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2. Proposta de algoritmo para detecção de vazamentos em oleodutos utilizando análise freqüencial de sinais de pressão
Pipeline leak detection is a matter of great interest for companies who transport petroleum and its derivatives, in face of rising exigencies of environmental policies in industrialized and industrializing countries. However, existing technologies are not yet fully consolidated and many studies have been accomplished in order to achieve better levels of sens
Publicado em: 2009
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3. Estudo da circulação hidrodinâmica e da dispersão de óleo na zona costeira entre Macau e Galinhos RN
This paper presents a study on coastal hydrodynamics and the spread of an oil spill in waters off Macau and Galinhos, on the east coast of the state of Rio Grande do Norte in Northeast Brazil. This area has a very marked coastal dynamic owing to the complexity of its geomorphological features, developed in a regime of semidiurnal mesotides involving reefs, s
Publicado em: 2008
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4. Sistema inteligente para detecção de vazamentos em dutos de petróleo usando transformada Wavelet e redes neurais
This work consists in the use of techniques of signals processing and artificial neural networks to identify leaks in pipes with multiphase flow. In the traditional methods of leak detection exists a great difficulty to mount a profile, that is adjusted to the found in real conditions of the oil transport. These difficult conditions go since the unevenly soi
Publicado em: 2006
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5. DEVELOPMENT OF PIGS TO DETECT AND LOCATE SMALL PIPELINES LEAKS / DESENVOLVIMENTO DE PIGS INSTRUMENTADOS PARA DETECÇÃO E LOCALIZAÇÃO DE PEQUENOS VAZAMENTOS EM DUTOS
This work´s objective is the development of inspections tools capable to detect and locate small leaks in gas and oil pipelines. Nowadays, many brazilian pipelines are equipped with reliable leak detection systems, but these still can`t detect small leaks caused by slow corrosion processes. The most used pipeline inspection technology is the instrumented pi
Publicado em: 2004
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6. Experimental tests of biomass fast pyrolysis in fluidized bed reactor criteria to system optimization / Testes em uma planta de pirolise rapida de biomassa em leito fluidizado : criterios para sua otimização
This research discusses a strategy to optimize and scale up the pyrolysis process in fluidized bed. The strategy uses adjusted mathematical models applied to the model reactor to the project commercial reactors. Several steps of that procedure were appraised based on the adjusted model for the percentage of elutriated fine charcoal in the model reactor. It w
Publicado em: 2004
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7. Implantação de um sistema de detecção de vazamentos em oleodutos com tratamento de alarmes falsos
The pumping of fluids in pipelines is the most economic and safe form of transporting fluids. That explains why in Europe there was in 1999 about 30.000 Km [7] of pipelines of several diameters, transporting millíons of cubic meters of crude oil end refined products, belonging to COCAWE (assaciation of companies of petroleum of Europe for health, environmen
Publicado em: 2002
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8. Papel dos ions de ferro na iniciação do processo de peroxidação lipidica em mitocondrias isoladas de figado de rato
Here we have studied the role of iron ions on the mitochondrial lipid peroxidation induced by FeSO4 in isolated rat liver mitochondria. There are two hypothesis to explain the role of iron ions on the initiation of this peroxidative process. The first one suggests that iron catalyses Haber Weiss and Fenton reactions generating the hydroxyl radical (OR). This
Publicado em: 1996
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9. Antinuclear antibodies and breast implants.
Anecdotal reports have linked silicone breast implants to autoimmune diseases, with scleroderma being mentioned most often. In view of other environmental influences--such as silica mining and the toxic oil syndrome--thought to predispose to scleroderma, more systematic immunologic information on women with silicone implants is needed to assess any possible