摘要
结合定向钻机施工顶板分支孔及水力压裂大范围增透的优点,从技术改造和装备优选2方面着手,研究形成了顶板走向长钻孔分段水力压裂技术。在五阳煤矿应用效果证明:该技术体系运行稳定、可靠,平均单孔瓦斯抽采纯量提高了2倍以上,抽采浓度提高了30%以上,大幅度提高了煤层瓦斯抽采效果。
Combined with the advantages of long top drilling technology of directional drilling machine construction and hydraulic fracturing technology. From two aspects of technical transformation and equipment optimization, segmental hydraulic fracturing technology of roof strike long borehole was studied and formed. The application results in Wuyang coal mine show that the technical system operates stably and reliably, increases the average single-hole gas extraction flow by more than 2 times,increases the extraction concentration by more than 30%, and greatly improves the gas extraction effect of coal seam.
作者
王浩
WANG Hao(Shanxi Huoerxinhe Coal Industry Co.,Ltd.,Changzhi 046600,China)
出处
《煤炭技术》
CAS
2020年第1期138-140,共3页
Coal Technology
关键词
定向钻孔
分支钻孔
水力压裂
分段压裂
瓦斯抽采
directional drilling
branch drill hole
hydraulic fracturing
stage fracturing
gas extraction
