山西平遥南区块煤系气小口径探井钻井难点与对策  

Coal Measures Gas Small Diameter Exploration Well Drilling Difficulties and Countermeasures in Pingyao South Block,Shanxi

作　　者：马俊强 轩跃刚 崔俊 姜瑞辰 Ma Junqiang;Xuan Yuegang;Cui Jun;Jiang Ruichen(Exploration Institute,Guangdong Bureau of Coal Geology,Guangzhou,Guangdong 510440)

机构地区：[1]广东煤炭地质局勘查院,广州510440

出　　处：《中国煤炭地质》2020年第6期70-73,共4页Coal Geology of China

基　　金：鄂尔多斯盆地东缘深钻优快钻井技术应用研究;山西省国土厅项目:山西省平遥南区块煤层气勘查项目。

摘　　要：本区块以往未进行过专门的煤系气勘查工作,勘查程度和研究程度较低。探井位于断层F18和F20之间,地层破碎;钻遇上石盒子组主要为砂质泥岩层,为易塌易垮地层,给钻井工作带来不便。对施工煤系气探井中遇到的井漏、塌孔、抱钻等一系列问题和解决办法进行阐述和探讨,并对煤系气小口径取心深探井的设计和施工提出了建议。In the Pingyao south block had not been carried out specialized exploration for coal measures gas previously,exploration and research degrees are rather low.In an exploration well between faults F18 and F20 has fractured strata.Intersected Shangshihezi Formation has mainly sandy mudstone,easy to collapse and caving,thus brought inconvenience to drilling operation.The paper has expounded and discussed a series issues of drilling fluid leakoff,caving in and tool sticking etc,as well as solutions.Finally,has put forward suggestions on coal measures gas small diameter coring deep exploration well design and operation.

关 键 词：绳索取心 事故处理 深探井 

分 类 号：P634.[天文地球—地质矿产勘探]