Tectonic control activities on CBM reservoir and accumulation in Northwest China

Based on the tectonic setting,evolution and types in Northwest China,the tectonic control activities on coalbed methane(CBM) reservoir and accumulation have been probed into in this paper.By all means,tectonics play an important role on the generation,accumulation,migration and trap of CBM.Tectonic setting and its evolution during coal accumulation are basic factors to control formation and distribution of coal beds and coal measures,while different forms of structures after coal accumulation are dominant factors to control accumulation and conservation of CBM,and finally affect the exploitation of coalbed methane.