水力压裂技术在低透气性煤层瓦斯抽采中的应用  

Application of Hydraulic Fracturing Technology in Gas Extraction from Low Permeability Coal Seams

作　　者：韩宇通 Han Yutong(Guandi Mine,Shanxi Coking Coal Xishan Coal Electricity Group Co.,Ltd.,Taiyuan Shanxi 030053)

机构地区：[1]山西焦煤西山煤电集团公司官地矿,山西太原030053

出　　处：《山西化工》2023年第5期145-146,154,共3页Shanxi Chemical Industry

摘　　要：官地矿为解决低透气性煤层瓦斯抽采效率低的难题,提出了低透气性煤层水力压裂强化瓦斯抽采技术,分析煤层瓦斯赋存特点和水力压裂原理,进行水力压裂工艺的钻孔工艺、封孔工艺和压裂参数的设计,应用瞬变电磁和出水点分析等技术实时监测,并进行了压裂效果分析。结果显示:实施水力压裂的区域的压裂影响半径显著超过30 m,抽采瓦斯浓度、流量均大幅提高。In order to solve the problem of low gas extraction efficiency in low permeability coal seams,Guandi Mine proposed a hydraulic fracturing enhanced gas extraction technology for low permeability coal seams.The characteristics of coal seam gas occurrence and hydraulic fracturing principle were analyzed,and the drilling process,sealing process,and fracturing parameters of hydraulic fracturing technology were designed.Transient electromagnetic and water outlet analysis techniques were applied for real-time monitoring,and the fracturing effect was analyzed.The results show that the fracturing radius in the area where hydraulic fracturing is implemented significantly exceeds 30 meters,and the concentration and flow rate of extracted gas are significantly increased.

关 键 词：水力压裂技术 低透气性煤层 瓦斯抽采 封孔器 

分 类 号：TD712[矿业工程—矿井通风与安全]