Combination of gas-producing layers of CBM wells in Wubu mining area

There are rich CBM (coalbed methane) resources in Wubu mining area.To speed up the CBM development in Wubu mining area, the draining effect and the combination of gas-producing layers of CBM wells in the Wubu mining area have been analyzed. And form the point of view of the hydraulic connection between the coal seam and the aquifer, the causes for different draining effect of CBM wells in Wubu mining area have been discussed. The result indicates that coal seam S1 has no hydraulic connection with the aquifer, and the aquifer has not influenced the draining effect of the coal seam S1, so the draining effect of the S1 coal seam is good. There is no good aquifuge between coal seam T1 and limestone aquifer K2. The crushed fracture has extended to the roof of coal seam T1 during hydraulic fracturing process, limestone aquifer K2 has influenced seriously the draining effect of coal seam T1. So the draining effect of coal seam T1 or the multi-layer S1 and T1 are not good. Considering above factors, suggestions on the further development strategy of CBM resource in the Wubu mining area in near future have been put forward.