The analysis considered the improvement of the coalbed physical property by heat in structural movements in high coal rank reservoirs and the important role of biogas and free gas in low rank CBM reservoirs.

• 在分析过程中考虑了构造热事件对高煤阶煤层气藏物性的改造作用和生物气、游离气在低煤阶煤层气成藏过程中的作用。