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
马宏伟 1徐鲲 1李庄威 1靳楠1
作者信息
- 1. 中海石油(中国)有限公司天津分公司 天津 300459
- 折叠
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.
Abstract
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Key words
Ground stress concentration/Well wall instability/Drilling cycle/Rate of penetration引用本文复制引用
出版年
2024
NETL
NSTL
万方数据