摘要
为了解决低透气性煤层中的瓦斯预抽,以及增大有效抽采半径,在提高煤层透气性的同时改善瓦斯预抽效果,在李子垭南二井进行了水力压裂增透试验。在分析煤岩体水力压裂增透机理的基础上,结合现场试验数据,总结了影响水力压裂、增加煤层透气性的工艺参数,并确定了系统工艺参数和钻孔施工工艺参数的范围,可为今后推广水力化技术措施提供参考。
Gas permeability enhancement tests by hydraulic fracturing were conducted in South No. 2 Shaft of Liziya Mine in order to carry out gas pre-drainage in coal seams with low permeability,increase the effective drainage radius and improve the gas per-drainage effect while enhancing the permeability of coal seams. Based on the analysis of the permeability enhancement mechanism by hydraulic fracturing in coal-rock mass and combined with the site test data,the process parameters affecting the hydraulic fracturing and enhancing the permeability of coal seam were summarized,and the process parameters of the drainage system and the scope of drilling process parameters were determined,all of these can provide technical reference for promoting hydraulic technology in the future.
出处
《矿业安全与环保》
北大核心
2016年第2期1-4,共4页
Mining Safety & Environmental Protection
关键词
煤岩体
水力压裂
增透技术
工艺参数
coal-rock mass
hydraulic fracturing
permeability enhancement technology
process parameters
