摘要
渤中34-9油田是渤海海域首个开发的火成岩油田,每口井钻遇火成岩厚度可达数百米。在火成岩地层钻进过程中发生不同程度的井下漏失,同时伴随着地层呼吸效应,造成井漏等复杂情况,降低钻井作业时效,甚至会引发井喷事故,给钻井作业带来了极大的困难和挑战。本文分析火成岩地层呼吸效应的机理,从定向井、钻井液、固井等探讨呼吸地层的钻井措施,为发生呼吸效应的火成岩地层优质快速钻井提供技术参考。
Bozhong34-9 oilfield is the first igneous oil field developed in the Bohai Sea,the thickness of the igneous rock encountered in each well can reach hundreds of meters.Different degrees of downhole loss occurred during drilling in igneous rock formations,at the same time with the formation respiration effect,causes complicated situations such as lost circulation,reduce drilling timeliness,even cause a blowout accident,Brings great difficulties and challenges to drilling operations.This paper analyzes the mechanism of respiration effect of igneous rock formations,discusses the drilling technology measures of breathing formations from directional wells,drilling fluids,cementing,etc.,and provides references for drilling operations of respiration effects of igneous rock formations.
作者
罗伟
李大伟
向良炜
陈同骁
余建生
Luo Wei;Li Dawei;Xiang Liangwei;Chen Tongxiao;Yu Jiansheng(Drilling and Production Company,CNOOC Energy Technology and Services Limited,Tianjin 300452,China;CNOOC(China)Ltd.-Tianjin Branch,Tianjin 300459,China)
出处
《科学技术创新》
2022年第7期113-116,共4页
Scientific and Technological Innovation
关键词
火成岩
井下漏失
地层呼吸
作业时效
技术措施
Igneous rock
Well loss
Formation ballooning
Drilling timeliness
Technical measures
