水力压裂增渗技术在低透气性煤层的应用  

Application of Hydraulic Fracturing and Permeability Increasing Technology in Low Permeability Coal Seam

作　　者：霍晶晶 Huo Jingjing(Lu'an Chemical Sijiazhuang Co.,Ltd.,Shanxi Xiyang 045300)

机构地区：[1]潞安化工寺家庄公司,山西昔阳045300

出　　处：《山东煤炭科技》2022年第12期91-94,共4页Shandong Coal Science and Technology

摘　　要：针对常规技术与参数进行瓦斯抽采难以满足要求问题,寺家庄矿15301工作面采用顺层钻孔水力压裂增渗强化抽采技术,采用水冲击压裂煤层在单一低透气性煤层改善低透气性,利用冲击力二次破坏煤体使原生裂隙扩展贯通,提高煤体透气性。结果表明,压裂区相较非压裂区平均瓦斯浓度与瓦斯纯量有明显提高,瓦斯浓度提高6倍,百孔瓦斯纯量提高4.3倍。In view of the problem that it is difficult to meet the requirements of conventional tech-nology and parameters for gas drainage, the enhanced extraction technology of bedding drilling hy-draulic fracturing is adopted in the 15301 working face of Sijiazhuang Mine, and the water impact fracturing coal seam is used to improve the low gas permeability in a single low permeability coal seam. The impact force is used to destroy the coal for the second time to expand the primary cracks and improve the gas permeability of the coal. The results show that the average gas concentration and gas purity in the fractured area are significantly higher than those in the non-fractured area, the gas concentration is increased by 6 times, and the 100 hole gas purity is increased by 4.3 times.

关 键 词：顺层钻孔 水力压裂 增透技术 单一煤层 低透气性 

分 类 号：TD712.6[矿业工程—矿井通风与安全]