古城煤矿地面瓦斯抽采井水力压裂增透技术研究  

Research on Hydraulic Fracturing and Permeability Enhancement Technology for Ground Gas Extraction Wells in Gucheng Coal Mine

作　　者：郭红 Guo Hong(Shanxi Lu'an Jinyuan Coalbed Methane Development Co.,Ltd.,Changzhi Shanxi 046000,China)

机构地区：[1]山西潞安金源煤层气开发有限责任公司

出　　处：《山西冶金》2024年第9期227-229,232,共4页Shanxi Metallurgy

摘　　要：以古城煤矿3号煤层采用地面瓦斯抽采井抽采瓦斯为工程背景,结合理论分析、实验室实验、工业试验等手段,在S2303综采工作面开展地面钻井水力压裂煤层增透技术应用基础研究,选择合理的压裂液、支撑剂种类、配比,设计具体的压裂工艺及施工流程,压裂后通过顺层钻孔考察增透效果及影响半径。结果表明:压裂井影响范围内,顺层钻孔抽采混合流量显著增大,提升了煤层的渗透率,影响范围最大可达到100 m,研究结果对于解决低渗透率煤层的瓦斯治理问题具有指导意义。Based on the engineering background of using surface gas extraction wells to extract gas from the No.3 coal seam of Gucheng Coal Mine,combined with theoretical analysis,laboratory experiments,industrial tests and other methods,basic research on the application of surface drilling hydraulic fracturing coal seam anti permeability technology was carried out in the S2303 comprehensive mining face.Reasonable types and ratios of fracturing fluid and proppants were selected,and specific fracturing processes and construction procedures were designed.After fracturing,the anti permeability effect and influence radius were investigated by drilling along the layer.The results show that within the influence range of the fracturing well,the mixed flow rate of drilling and extraction along the layer significantly increases,improving the permeability of the coal seam.The maximum influence range can reach 100 meters.The research results have guiding significance for solving the gas control problem in low-permeability coal seams.

关 键 词：地面瓦斯抽采井 水力压裂 顺层钻孔 

分 类 号：TD712.6[矿业工程—矿井通风与安全]