海上油田M井井筒完整性失效分析及处理方法

Wellbore Integrity Failure Analysis and Handling Method of Well M in an Offshore Oilfield

随着油田开发时间的增长,油水井井筒完整性问题越来越突出,环空带压问题越来越普遍,对安全生产造成了严重的威胁。介绍了海上油田M井井筒完整性管理及实践方法,对问题井进行定量分析,针对油井B环空带压问题,创新采用罐装泵系统,重新构建两道完整的井下屏障,以较低的成本满足井筒完整性管理要求,恢复油井正常生产,达到良好的经济效益。

With the extension of oilfield development time,the problem of wellbore integrity of oil and water wells is becoming more and more prominent,and the problem of annulus pressure is becoming more and more common,which poses a serious threat to the safety of production.This paper mainly introduces the wellbore integrity management and practice means of M well in an offshore oilfield,and makes quantitative analysis on the problem wells.Aiming at the problem of annulus pressure in well B,two complete downhole barriers are reconstructed by using innovatively canned pump system,and the requirements of wellbore integrity management are met with low cost,the normal production of oil wells is restored,and good economic benefits are achieved.