摘要
首次在煤矿井下使用稳定组合钻具、螺杆钻具和绳钻钻具，调整钻进工艺参数，成功地解决了沿煤层走向钻进工艺的技术难题，在中厚缓倾斜煤层中沿煤层定向钻进，总进尺２２１３．５６ｍ，最大孔深达３０２ｍ，取得了明显的经济效益。
ome technical problems about directional drilling along coal seams were successfully solved by use of screw,wire and compound drilling tools,and optimum drilling parameters.In the directional test drilling along median to thick and low angle coal seams, the total drilling course reached a distance of 2213.56 m and the maximum drilling depth is 302 m.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
1995年第6期30-34,共5页
Coal Geology & Exploration
基金
煤炭部重点课题
关键词
煤层
定向钻进
组合钻具
稳定器
探矿
oal seams
directional drilling
compound drilling tool
stabilizer.
