南海古潜山内幕油气藏压井实践与认识

Well Control Practice and Analysis of Inner Buried-hill Reservoir in the South China Sea

古潜山内幕油气藏钻井若严格按照海洋过平衡钻井工艺施工,容易发井漏、井塌和井涌等井下复杂情况,并可能对油气层造成严重的表皮伤害。本文以南海海域实施的首口古潜山内幕油气藏A井溢流压井作业实践为例,通过井控作业过程的分析,对该类型油气藏的井控技术进行研究和探索,为后续同类型井井控作业提供参考。

Strictly according to the offshore overbalance drilling technology,drilling the inner buried-hill reservoir is easy to cause well leakage,well collapse and well surge problem,and may cause serious skin damage to the oil and gas reservoir.Based on the well killing practice of A well in the first inner buried-hill reservoir in the South China Sea,the well control technology of this type of reservoir is studied and explored through the analysis of well control operation process,which provides reference for the subsequent well control operation of the same type.