大流量水力压裂增透技术及致裂效果评价方法研究  

Large flow hydraulic fracturing permeability enhancement technology and fracturing effect evaluation method

作　　者：何峰 王勇[1,4,5] 杜鹏飞[3] 江泽标 张国江 程林[1,5] He Feng;Wang Yong;Du Pengfei;Jiang Zebiao;Zhang Guojiang;Cheng Lin(Guizhou Branch,Shijiazhuang Design and Research Institute of Coal Industry Co.,Ltd.,Guiyang 550002,China;College of Mining,Guizhou University,Guiyang 550025,China;Guizhou Anhe Yongzhu Technology Co.,Ltd.,Guiyang 550008,China;School of Safety Engineering,China University of Mining and Technology,Xuzhou 221116,China;Guizhou Qiankuang Energy Technology(Group)Co.,Ltd.,Guiyang 550025,China)

机构地区：[1]煤炭工业石家庄设计研究院有限公司贵州分公司,贵州贵阳550002 [2]贵州大学矿业学院,贵州贵阳550025 [3]贵州安和永驻科技有限公司,贵州贵阳550008 [4]中国矿业大学安全工程学院,江苏徐州221116 [5]贵州黔矿能源科技(集团)有限公司,贵州贵阳550025

出　　处：《煤炭科技》2025年第1期125-131,135,共8页Coal Science & Technology Magazine

基　　金：贵州省科技计划项目资助(黔科合成果[2022]一般078)。

摘　　要：水力压裂是目前最常用的煤层增透技术,对瓦斯的高效抽采十分重要。为了解决水力压裂技术因装备技术水平不足以及评价方法不完善造成的孔径小、流量小、难评价的问题,提升矿井瓦斯抽采效率,通过多泵并联压裂系统、瞬变电磁法、钻孔验证(盐度检测)等压裂范围检测技术,对大孔径、大流量水力压裂增透技术及评价方法进行了研究。研究结果表明,该技术可以适应煤矿井下实际工作环境与要求,压裂钻孔的影响半径最大达到152.5 m;采用该技术的压裂区域内抽采钻孔平均单孔抽采纯量是普通技术的2.29~3.25倍,部分区域平均单孔抽采纯量可达普通压裂技术的3.70~5.25倍,水力压裂增透效果良好。Hydraulic fracturing is the most commonly used permeability enhancement technology of coal seam,which is very important for efficient gas extraction.In order to solve the problems of small aperture,small flow and difficult evaluation caused by inadequate equipment technology level and imperfect evaluation method of on-site hydraulic fracturing technology,and improve the efficiency of mine gas extraction,the hydraulic fracturing technology and evaluation technology of large aperture and large flow were studied through multi-pump parallel fracturing system,transient electromagnetic method and drilling verification(salinity detection)and other fracturing range detection technologies.The research shows that this technology can adapt to the actual working environment and requirements of the well;the maximum affected radius of the fracturing drilling is 152.5 meters;the average single hole extraction purity of most fracturing areas using this technology is 2.29~3.25 times that of ordinary technology,and the average single hole extraction purity in some areas can reach 3.70~5.25 times that of ordinary fracturing technology,and hydraulic fracturing has a good effect on increasing permeability.

关 键 词：瓦斯防治 水力压裂 煤层增透 效果评估 瓦斯抽采 

分 类 号：TD712[矿业工程—矿井通风与安全]