利用地层孔隙热压生排烃模拟仪实验装置，对采自四川盆地西北部广元矿山梁地区下寒武统具高有机质含量、高氢指数和低成熟度特征的固体沥青，开展了模拟地层条件下的“沥青+白云岩+去离子水”(系列A)和“沥青+白云岩+硫酸镁+去离子水”(系列B)生排烃实验。结果表明，这两个系列的气体产率具有较大差异，其中，加入硫酸镁的系列(系列B)发生了热化学硫酸盐还原反应(TSR)，使气态烃和非烃气体的产率增大，同时也加速了重烃气体的裂解，导致重烃气体大量裂解的温度降低。

The samples of the Lower Cambrian solid bitumen with the characteristics of high organic content, high hydrogen index, and low asphaltene maturity were collected at Kuangshanliang in Guangyuan in the northwest part of Sichuan Basin. The formation porosity thermo-compression simulation experiment was used to launch the generation and expulsion simulation experiments of“solid bitumen +dolostone +deionized water” (Series A) and of “solid bitumen + dolostone + magnesium sulfate + deionized water”(Series B) under reservoir conditions. The results show that two series have quite different ratios of gas yield. Between them, Series B occurrences thermochemical sulfate reduction (TSR), which makes not only increasing the gaseous hydrocarbon and non-hydrocarbon gas yields but also accelerating the heavy hydrocarbon pyrolysis and reducing the temperature of heavy hydrocarbon pyrolysis.