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在地温梯度、埋藏史研究的基础上,探讨了沁水盆地煤层气藏的成藏过程和聚气历史．通过对沁水盆地南部阳城地区和西部霍州地区的煤层热演化史、煤层气地球化学特征和聚气历史的对比研究表明,现今沁水盆地煤层气藏的形成取决于决定煤层气地化特征的“关键地质时期”和决定现今煤层含气量的“关键地质时刻”．演化程度最高的地质时期决定了煤层气的组分和碳同位素特征,即是决定煤层气地球化学特征的关键地质时期；煤层气的含气量以吸附气为主,因此煤层气的聚气历史(地史上的含气量变化)与决定煤层温度、压力的埋藏史有着直接的关系,而现今煤层气的含气量则主要取决于关键地质时刻的煤层上覆“有效地层厚度”．
Based on the study of geothermal gradient and burial history, the hydrocarbon accumulation process and gas accumulation history of coalbed gas reservoirs in Qinshui Basin were discussed. By comparing the thermal history of CBM, the geochemical characteristics of CBM and the history of gas accumulation in Yangcheng area and Huozhou area in the south of Qinshui Basin, it is found that the formation of coalbed methane reservoir in Qinshui Basin nowadays is determined by the formation of coalbed methane Characteristics of the “key geological period” and determine the current coalbed gas “key geological moment.” The geological stage with the highest degree of evolution determines the composition and carbon isotope characteristics of coalbed methane, which is the key geological period that determines the geochemical characteristics of coalbed methane. The gas content of coalbed methane is mainly adsorbed gas. Therefore, In the history of the gas content changes) and determine the coal seam temperature and pressure burial history has a direct relationship, and today the gas content of CBM depends mainly on the key geological time overlying coal seam “effective formation thickness.”