复合钻进技术在红柳煤矿冻结孔施工中的应用  

Application of combined drilling technique in the freezing wellin Hongliu Coalmine

作　　者：张凯[1] ZHANG Kai(Hydrogeological Exploration Bureau,CNACG,Handan Hebei 056000,China)

机构地区：[1]中国煤炭地质总局水文地质局,河北邯郸056000

出　　处：《探矿工程（岩土钻掘工程）》2020年第2期54-58,共5页Exploration Engineering:Rock & Soil Drilling and Tunneling

摘　　要：神华宁煤集团红柳煤矿地质构造发育、地层倾角大、软硬互层多,冻结孔钻进施工中钻孔易偏斜,使用陀螺测斜仪配合螺杆钻具纠斜作业次数多、易复偏,影响工程进度。针对这些问题,现场研究采用PDC或牙轮钻头配合1°单弯螺杆复合钻进技术,取得了很好的防斜打快效果,值得类似工程借鉴。Because of geological structure development,large dip angle formation,and inter-bedded soft and hard formation at Hongliu Coalmine of Shenhua Ningxia Coal Industry Group,freezing wells were easy to deviate,and gyro and mud motors were needed to make correction drilling for a few times,delaying the project progress.To solve these problems,compound drilling was performed with combination of the PDC or cone bit and the 1°single bent motor,achieving good results in anti-deflection,and improving ROP.It may provide some reference for other similar projects.

关 键 词：冻结孔 大倾角地层 复合钻进 防斜打快 

分 类 号：P634[天文地球—地质矿产勘探]