重庆市松藻矿区小鱼沱井田主要含煤地层为二叠系上统龙潭组,可采煤层为M6、M7、M8,煤层的煤化程度高,均为无烟煤,估算煤层气资源量约32.67亿m3。区内煤化程度及宏观煤岩类型有利于煤层气的生成,断裂构造不发育及致密的围岩适宜煤层气储存。煤层气含量与煤层埋深、孔隙率及镜质组含量呈正相关关系。区内地下水径流能力弱,也有利于煤层气的保存。 The main coal-bearing formation in Xiaoyutuo Minefield in Songzao Mining Area of ​​Chongqing Municipality is the Permian Longtan Formation. The recoverable coal seams are M6, M7 and M8. The coal seam has a high degree of coalification and is anthracite. The estimated CBM resource is about 3.267 billion m3. The degree of coalification in the area and the macro-type of coal and rock are favorable to the formation of coalbed methane, the ruptured tectonics and the tight surrounding rock suitable for CBM storage. The CBM content has a positive correlation with the coal seam depth, porosity and vitrinite content. The weak groundwater runoff in the area is also conducive to the preservation of coalbed methane.