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采用有机岩石学全岩分析方法,结合有机地球化学分析资料,以新疆三塘湖盆地侏罗纪煤系烃源岩的热演化进行了研究。三塘湖盆地侏罗纪煤系烃源岩的热演化既有共性,又有其特殊性,前者主要表现在镜质组反射率R、孢子体荧光参数(λmax、Q、I546)和分子地球化学参数上,它们均显示重要的热演化指示意义;后者主要表现在,热演化指标与现今埋深关系不大、热演化程度“同层相近”不同有机显微组分差异演化和有机质热演化具有阶段性等方面。在此基础上,初步建立了三塘湖盆地侏罗纪煤系烃源岩的成烃模式。
Based on the whole rock analysis method of organic petrology and the data of organic geochemical analysis, the thermal evolution of the Jurassic coal measures of source rocks in the Santanghu Basin, Xinjiang was studied. The thermal evolution of the Jurassic coal measure source rocks in the Santanghu Basin is common and unique. The former is mainly characterized by the vitrinite reflectance R, the fluorescence parameters of the sporophyte (λmax, Q, I546) and molecular geochemical parameters On the other hand, both of them show the significance of important thermal evolution indications. The latter mainly shows that the thermal evolution indices have little to do with current burial depths. The differences in thermal evolution between “similar layers” Stage and so on. On this basis, the hydrocarbon generation modes of the Jurassic coal measures of the source rocks in the Santanghu Basin are preliminarily established.