Drilling Problems
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. SMART MONITORING AND DECISION MAKING FOR REGULATING ANNULUS BOTTOM HOLE PRESSURE WHILE DRILLING OIL WELLS
Abstract Real time measurements and development of sensor technology are research issues associated with robustness and safety during oil well drilling operations, making feasible the diagnosis of problems and the development of a regulatory strategy. The major objective of this paper is to use an experimental plant and also field data, collected from a basi
Braz. J. Chem. Eng.. Publicado em: 2016-12
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2. Química Sem Fronteiras: o desafio da energia
Coal, natural gas and petroleum-based liquid fuels are still the most widely used energy sources in modern society. The current scenario contrasts with the foreseen shortage of petroleum that was spread out in the beginning of the XXI century, when the concept of "energy security" emerged as an urgent agenda to ensure a good balance between energy supply and
Quím. Nova. Publicado em: 2013
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3. Proper orthogonal decomposition for model reduction of a vibroimpact system
The application that inspires this work is the percussion drilling. This problem has impacts and presents uncertainties. In this first analysis the focus is on the construction of an efficient reduced-order model to deal with the nonlinear dynamics due to the impacts. It is important to have an efficient reduced-order model to perform the stochastic analysis
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012-09
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4. DIAGNOSTICS OF OPERATIONAL PROBLEMS DURING OIL WELL DRILLING / DIAGNÓSTICOS DE PROBLEMAS OPERACIONAIS DURANTE A PERFURAÇÃO DE POÇOS DE PETRÓLEO
A perfuração de poços de petróleo é uma operação complexa e de elevado risco e custo financeiro. Com o passar dos anos o número de poços horizontais e de longo alcance perfurados aumentou consideravelmente devido à existência de reservatórios mais profundos e de difícil acesso, além da necessidade de se obter uma melhor eficiência na extraçã
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/10/2011
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5. Estudo de viabilidade do sistema de ancoragem de uma unidade flutuante de produção e armazenamento \"FPSO\" acoplada a um sistema de completação seca \"TLWP\". / Mooring system feasibility study of a floating production and storage unit \"FPSO\" coupled to a dry tree system \"TLWP\".
The oil and gas production in Brazilian fields are commonly found in deep water and situated far away from the coast, reaching distances of more than 100 km as, for example, in the Campos Basin or Santos Basin. Due to the heavy oil and lack of pipeline infrastructure found in these fields, not only subsea equipments that must support high pressure but also l
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/03/2011
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6. Estudo do comportamento PVT de misturas de metano e fluidos de perfuração base éster / Study of the PVT behavior of methane and ester based drilling fluids mixtures
During conventional drilling operations, it is necessary to maintain the wellbore pressure greater than the reservoir pore pressure, otherwise a kick may occur. If the well control procedure is not effective during the circulation of the formation influx out of the well, a blowout could happen, which is a dangerous event concerning safety and environmental i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2010
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7. Pos-analise em problemas de perfuração de poços maritimos de desenvolvimento / Post-analysis in drilling problems on offshore development wells
Os problemas na perfuração de poços de petróleo são responsáveis pela maior parte dos tempos não produtivos, elevando assim os custos diários das operações. Portanto, o estudo e o entendimento destes problemas contribuirá para a otimização da perfuração, melhorando assim as práticas ou mitigando os efeitos severos das anormalidades. O present
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/02/2010
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8. EXPERIMENTAL EVALUATION OF TRANSPORT PARAMETERS IN SHALES / AVALIAÇÃO EXPERIMENTAL DOS PARÂMETROS DE TRANSPORTE EM FOLHELHOS
The majority of the problems related to wellbore stability occur when argillaceous rocks, such as shales, are drilled. Such problems are believed, in general, to be caused by the physical-chemical interaction between drilling fluids and the referred rocks. This dissertation focuses on the experimental study of the behavior of shales exposed to different sali
Publicado em: 2010
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9. Controle da pressão anular de fundo durante a perfuração de poços de petróleo. 2009 / Annulus bottom-hole pressure control during oil well drilling. 2009
A non linear mathematical model (gas-liquid-solid), representing an oil well drilling system, was developed, based on mass and momentum balances, in order to implement classic control (PI), using mud pump flow rate as manipulated variable for controlling annulus bottom-hole pressure. An experimental unit was built in order to represent the control problems c
Publicado em: 2009
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10. Estudos de processos térmicos decorrentes da usinagem: aplicação de problemas inversos em furação / Thermal studies of cutting process. Inverse problem application in drilling
Heat generation is a common problem during any type of cutting, but particularly during a drilling due to the difficulty of conducting heat away from the cutting edge and the fact that the chips remain in contact with the tool for a relatively long time in a hole. Cutting temperatures have strongly influenced both the tool life and the metallurgical state of
Publicado em: 2009
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11. Simulador de meios porosos saturados elastoplasticos / Numerical simulator of saturated elastoplastic porous media
The exploration of mineral resources is growing in importance in the Brazilian economy. Since the environments in which these resources are found are becoming increasingly more complex and challenging for the production phase, currently unavailable knowledge and technologies are required to produce these reserves. In the particular well drilling and completi
Publicado em: 2009
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12. Methodology for drilling data analysis applied to exploitation wells / Uma metodologia para analise de dados de perfuração de poços de desenvolvimento
The increasing complexity of environments explored and the technology advance characterize a dynamic scenario of Drilling Industry, which has lead to changes in well profiles. Such aspects emphasize the importance of well planning in order to obtain more efficient operations in economical and safety terms. A key point of this process is the knowledge about t
Publicado em: 2008