Estudo do controle de poços em operações de perfuração em aguas profundas e ultra profundas

AUTOR(ES)
DATA DE PUBLICAÇÃO

2002

RESUMO

Well control has always been a very important issue in the oi! and gas exploitation business, since it involves money savings, people safety and environment threatening. The advancement of the exploration frontiers from onshore to offshore fields, particularly, deep and ultra-deep waters, has increased even more the relevance of kick control and blowout prevention during drilling operations. Widely used drilling practices have been optimized and re-evaluated, so have new technologies been developed to handle specific issues related to deepwater drilling operations, such as reliable and efficient well control practices. This effort has great importance to some countries like Brazil, which have most part of their oil and gas production concentrated on offshore wells, about of those reserves are located in deepwaters. Regarding such scenario, a mathematical model has been developed to simulate a gas kick and predict the pressure variation in the choke line and the annular space of the well during well control situation in deepwater scenarios. Considerations regarding the effects of wellbore geometry, frictional pressure losses, influx expansion, and two-phase flow aspects have been implemented in the present model. The effects of some variables in well control, such as the pit gain, water depth, mud weight and rheology and pump flow rate have been studied

ASSUNTO(S)

well control engenharia do petroleo poços de petroleo deepwater drilling perfuração submarina kick

ACESSO AO ARTIGO

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