套管补接技术在渤海勘探钻井中的应用  

Application of Casing Repair Technology in Exploration Drilling in Bohai Oilfield

作　　者：王旭 靳楠 陈冬毅 刘洺伽 徐响 WANG Xu;JIN Nan;CHEN Dongyi;LIU Mingjia;XU Xiang(CNOOC EnerTech-Drilling&Production Co.,Tianjin 300452,China;Tianjin Branch of CNOOC(China)Ltd.,Tianjin 300459,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452 [2]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《海洋石油》2024年第4期83-86,共4页Offshore Oil

基　　金：国家科技重大专项“大型油气田及煤层气”子课题“渤海油田高效开发示范工程”(2016ZX05058);中海石油(中国)有限公司科技项目“渤海油田3000万吨持续稳产关键技术研究”子课题“渤海边际油田高效开发钻完井配套技术”(CNOOC-KJ135 ZDXM 36 TJ06TJ)。

摘　　要：套管发生破损将给井筒完整性带来较大的挑战,而勘探钻井压力系统不确定性大,可能会带来更为严重的井控风险。为满足套损后续钻井作业的井筒完钻性要求,需要对补接工艺进行针对性的优化。该文分析了套管补接的技术原理,以渤海某探井为例,介绍了套管补接技术的优化及实践,最终顺利实现了套管补接且试压合格,实现了套管补接技术在渤海勘探钻井中的首次成功应用。该技术可为渤海探井井筒完整性管理提供重要参考,可推广至其他套管损坏的工况。Casing failure will bring great challenge to wellbore integrity,and the uncertainty of exploratory drilling pressure systems may lead to more serious well control risks.In order to meet the requirements of wellbore completion in subsequent drilling operations with casing failure,it is necessary to optimize the casing repair process.This paper analyzes the technical principle of casing repair,and introduces the optimization and practice of casing repair technology with an exploration well in Bohai Sea as an example.Finally,casing repair was successfully realized and the pressure test was qualified,and the first successful application of casing repair technology in exploration drilling in Bohai Sea was realized.This technology can provide an important reference for the integrity management of Bohai Sea exploration wells,and can be extended to other casing damage conditions.

关 键 词：勘探钻井 井筒完整性 套管补接 找漏 

分 类 号：TE52[石油与天然气工程—油气田开发工程]