临涣煤矿穿层钻孔水力压裂技术应用研究

针对临涣煤矿存在瓦斯抽采率低、打钻数量过多且瓦斯抽采周期短的问题,提出了采用穿层钻孔实施水力压裂工艺的方法。实验结果表明,临涣煤矿实验区瓦斯标况纯量平均提高了19倍,瓦斯抽采周期延长了3倍多,说明此次井下水力压裂实验基本形成了适用于临涣煤矿矿井的穿层钻孔水力压裂工艺,该煤矿适宜通过水力压裂卸压增透,减少打钻钻孔数量。

Application research of borehole hydraulic fracturing technology for Linhuan Coal Mine

In view of problems of low rate of gas extraction,too many drilling and short period of gas extraction in Linhuan Coal Mine,a method using borehole to implement hydraulic fracturing technology was put forward.The experimental results show that gas standard conditions average scalar was improved19 times in experimental area of Linhuan Coal Mine,gas extraction cycle was extended more than 3times,it indicated that the hydraulic fracturing test forms borehole hydraulic fracturing technology applicable to Linhuan Coal Mine.Linhuan Coal Mine is suited to use hydraulic fracturing to realize pressure relief antireflection and reducing drilling hole amount.