济阳坳陷石炭—二叠系煤系有效烃源岩分析

he dynamic analysis on the hydrocarbon-generation process in different geological times revealed that the maturity of the Permian-Carboniferous coal-bearing source rocks in Jiyang Depression evolved stage by stage, and there existed many times of hydrocarbon-generation. The important hydrocarbon-generation processes of Permian-Carboniferous coal-bearing source rock in Jiyang Depression took place in the Yanshanian and Himalayan periods. The author assumes coal and geochemical methods to evaluate the source rocks，then according to the expulsion of coal-bearing source rock ,make sure whether is effective.