论文部分内容阅读
结合黑龙江省宝泉勘探区实际情况,对小口径硬岩补斜进行探索和研究,2次失败,分析原因,通过对补斜前钻孔维护、偏斜器的制作、甩草把位置确定、斜孔钻进等方面的分析、研究,最后补斜成功:采煤4.07m,煤芯长度采取率100%。总结了一套有效的小口径硬岩补斜方法,解决该项钻探工艺难点。
According to the actual situation of Baoquan prospecting area in Heilongjiang Province, this paper explores and studies on the small-diameter hard rock make-up incline, fails twice and analyzes the reasons. Through the maintenance of the pre-make-up borehole, the production of the deflector, Inclined hole drilling and other aspects of analysis, research, the final complement oblique success: mining 4.07m, coal core length taken rate of 100%. This paper summarizes a set of effective small-caliber hard rock make-up methods to solve the difficulties of the drilling process.