Subsea Pipelines
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. 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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2. RESTARTABILITY OF VISCOPLASTIC MATERIALS IN PIPES / REINÍCIO DE ESCOAMENTO DE MATERIAIS VISCOPLÁSTICOS EM UM TUBO
On of the main problems in the operation of subsea pipelines that convey paraffin oils is the flow startup after long stoppages. Along the path from the reservoir to the platform, the oil experiences significant heat losses, especially to the low-temperature water at the sea bottom. When there is no flow, the oil may reach very low temperatures. Cooling indu
Publicado em: 2011
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3. NUMERICAL SIMULATION OF WAX DEPOSITION IN PETROLEUM LINES: ASSESSEMENT OF MOLECULAR DIFFUSION AND BROWNIAN DIFFUSION MECHANISMS / SIMULAÇÃO NUMÉRICA DA DEPOSIÇÃO DE PARAFINA EM DUTOS DE PETRÓLEO: AVALIAÇÃO DOS MECANISMOS DE DIFUSÃO MOLECULAR E DIFUSÃO BROWNIANA
Wax deposition is one of the major critical operational problems in crude oil pipelines operating in cold environments. Therefore, accurate prediction of the wax deposition is crucial for the efficient design of subsea lines. Unfortunately, wax deposition is a complex process for which the mechanisms are still not fully understood. Aiming at the identificati
Publicado em: 2007
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4. MODELAGEM TRANSIENTE DA TRANSFERÊNCIA DE CALOR EM DUTOS DE PETRÓLEO OU GÁS, TERMICAMENTE ISOLADOS / TRANSIENT HEAT TRANSFER MODELING OF THERMALLY INSULATED OIL OR GAS PIPELINES
Subsea pipelines are employed not only for production but also for transportation. In both situations, warm oil loses heat to the cold sea water. The heat loss to the ambient is controlled by means of thermal insulation, which is designed for steady state operations. During shutdowns, the stagnant fluid in the pipeline loses heat to the cold surrounding, eve
Publicado em: 2005
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5. EXPERIMENTAL VALIDATION OF MODELS FOR PREDICTING THE FORCES FOR REMOVING WAX DEPOSITS IN PIPELINES USING PIGS / AVALIAÇÃO DE MODELOS PARA A REMOÇÃO DE DEPÓSITOS DE PARAFINA EM DUTOS UTILIZANDO PIGS
Pigging is still the most widely used method to remove wax deposits in subsea pipelines. The passage of a pig is still considered a risky operation, since the pressure gradient available for driving the pig might not be sufficient to overcome the contact forces between the pig and the wall, as well as the forces required to remove the wax deposit. If this is
Publicado em: 2005
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6. THERMAL ANALYSIS OF WAX BLOCKAGES REMOVAL IN PETROLEUM SUBSEA PIPELINES BY INDUCTIVE HEATING / ANÁLISE TÉRMICA DA REMOÇÃO DE BLOQUEIOS DE PARAFINA EM LINHAS SUBMARINAS DE PETRÓLEO UTILIZANDO AQUECIMENTO INDUTIVO
Bloqueio total de linhas submarinas de produção de petróleo devido ao depósito de parafina é um problema relevante para a indústria. Esse problema tem levado a perdas significativas associadas à diminuição de produção e à substituição de linhas obstruídas. O presente trabalho é um estudo sobre a viabilidade técnica de um procedimento para re
Publicado em: 2002