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鄂尔多斯盆地煤的ＲｏｃｋＥｖａｌ分析结果表明，在肥煤—焦煤阶段，Ｓ１＋Ｓ２达最大值，随后生烃潜力减弱。煤的ＰｙＧＣ分析及热模拟成气实验结果证实煤成气具有３个生气高峰，分别相应于Ｒｏ，ｍ０５％～０７％、１０％～１４％及２５％，表明煤成气具多阶段性的特点。这一规律性的认识有助于煤成气的勘探和开发。同时，随煤级增高，煤成烃特征亦发生有规律的变化：异构烃减少，正构烃增加；类异戊二烯烷烃分布亦存在多变性或多阶段的演化特点；苯系化合物具波动性变化特征。
The results of Rock-Eval analysis of coal in Ordos Basin show that S1 + S2 reaches the maximum during the fat coal-coking coal phase, and then the hydrocarbon generation potential is weakened. Py-GC analysis and thermal simulation of coal The results of gas-in-place tests confirmed that the coal-forming gas has three peaks of anger, corresponding to Ro, m0.5% -0.7%, 1.0% -1.4% and 2 5%, indicating that coal into gas with multi-stage characteristics. This regularity of understanding contributes to the exploration and development of coal-to-gas. At the same time, with the increase of coal rank, the characteristics of coal-forming hydrocarbon also changed regularly: the isomerism decreased, the n-alkanes increased, the isoprenoid alkanes also had the variability or multi-stage evolution characteristics, Volatility change characteristics.