大尺寸井眼深钻技术在渤海X油田的应用  

Application of large hole deep drilling technology in X oilfield of Bohai Sea

作　　者：马宏伟 徐鲲 李庄威 靳楠 Ma Hongwei;Xu Kun;Li Zhuangwei;Jin Nan(Cnooc(China)Limited Tianjin Branch,Tianjin 300459)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《石化技术》2024年第8期98-100,共3页Petrochemical Industry Technology

摘　　要：渤海X构造属于常压地层,1井和2井明化镇、馆陶组地层地应力集中,极易发生井壁失稳。从井身结构设计优化、膨润土深钻技术、钻井液性能优化三个方面分析,该技术在3井实钻中取得良好效果,可以减少作业中的复杂情况,达到缩短钻井周期和提高机械钻速的目的,3井较1井钻井时效提高20.70%,为后续该区块的勘探钻井作业提供参考。The X structure of Bohai Sea belongs to the normal pressure formation.The strata of Minghuazhen and Guantao formations in Well 1 and Well 2 are prone to shaft wall instability due to the concentrated in-situ stress.Based on the analysis of well structure design optimization,bentonite deep drilling technology and drilling fluid performance optimization,this technology has achieved good results in the actual drilling of 3 Wells,which can reduce the complexity of the operation,achieve the purpose of shortening the drilling cycle and improving the mechanical drilling rate.The drilling time of 3 Wells is increased by 20.70%compared with that of 1 well,providing a reference for the subsequent exploration drilling operations in this block.

关 键 词：地应力集中 井壁失稳 钻井周期 机械钻速 

分 类 号：TE52[石油与天然气工程—油气田开发工程]