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现今煤层气藏的富集程度是聚煤盆地回返抬升和后期演化对煤层气保持和破坏的综合叠加结果．从构造演化的角落来看,煤层气藏形成的关键时刻是煤层停止生气之后上覆“有效厚度”在地史上埋藏最小的时刻．中国除变质程度较低的含煤盆地外,绝大多数盆地都经历了回返抬升演化阶段,聚煤盆地回返抬升的时间早晚和长短及抬升的强度直接控制着煤层气藏的富集程度．聚煤盆地回返抬升后的构造演化对煤层气的富集程度也有重要影响．一直处于隆起剥蚀的地区,煤层气将不断散失；后期发生沉降的地区有利于煤层气的保存,但易造成煤层气饱和度的降低．
The enrichment of coalbed gas reservoirs today is the result of the comprehensive superimposition of the coalbed methane reversion and uplift and the subsequent evolution on the maintenance and destruction of coalbed methane. From the perspective of tectonic evolution, the key moment in the formation of coalbed methane reservoirs is the moment when the overburden “effective thickness” buried in the history of the earth is minimized. Except for the coal-bearing basins with lower metamorphism in China, most of the basins have undergone the stage of return-uplift and evolution, and the degree of enrichment of coalbed methane reservoirs is directly controlled by the length, length and lift of the coal-bearing basins. The tectonic evolution of the coal accumulation after the tectonic uplift also has an important influence on the enrichment of coalbed methane. Has been in the area of uplift and erosion, and the coalbed methane will be continuously lost. In the later period, the subsidence area is favorable for the preservation of coalbed methane, but it will easily lead to the decrease of coalbed methane saturation.