摘要
长宁页岩气表层钻井极易发生井漏,防漏治漏问题严峻。文章统计分析了长宁页岩气前期表层井漏情况,理清了该区块表层井漏特征,评价了表层常见的治漏效果,并在电磁法地质勘查、井身结构优化、钻井方式优选等方面提出建议,以期为长宁页岩气表层高效防漏治漏提供指导和建议。
Lost circulations are common when drilling surface casing section atC hangning shale gas block. By analysis of the loss dataduring surface drilling,the well loss features at the block are known and the plugging results are evaluated. Suggestions are given regards the EM geologic survey,casing program optimization,optimal drilling pattern,etc.,to minimize or control the lost circulations,expecting to provide guide and suggestion for Changning shale gas drilling.
出处
《钻采工艺》
CAS
北大核心
2019年第4期28-31,7-8,共4页
Drilling & Production Technology
基金
国家科技重大专项课题“非常规油气开发地下水及生态环境监测与保护技术”(编号:2016ZX05040-002)
关键词
长宁页岩气
表层钻井
井漏
环境保护
井身结构
Changning shale gas
surface drilling
lost circulation
environmental protection
casing program
