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江苏南部句容坳陷,在三迭系上青龙组碳酸盐岩地层中获得了工业油流。因而,本区的生油条件得到石油地质工作者的关注,尤其是这个地区有机质演化程度较低,更引起人们对生油岩研究的兴趣。根据煤岩学资料,句容坳陷为低—中变质区。本文通过热解色谱法,对碳酸盐岩进行了模拟实验,应用时间-温度曲线计算的大量生油临界深度,探讨了有机质热演化成烃特征;并比较了碳酸盐岩与碎屑岩有机质演化特点,划分了热演化阶段;最后,预测了各层系生油岩的潜力,三迭系、二迭系具有产液态烃的潜力,而石炭系、泥盆系和志留系则具有产凝析油和天然气的潜力。
The industrial oil flow was obtained in the carbonate reservoir of the Qinglong Formation in Triassic on the Jurong Depression in southern Jiangsu. Therefore, the conditions of oil production in this area have attracted the attention of petroleum geologists, especially the low degree of evolution of organic matter in this area, which has aroused people’s interest in the study of oil-bearing rocks. According to the data of coal petrology, the Jurong depression is a low-middle metamorphic area. In this paper, carbonate rock was simulated by pyrolysis chromatography. The critical depth of large amount of oil generated by time-temperature curve was used to study the characteristics of hydrocarbon evolution from organic matter to hydrocarbon. Carbonate rocks and clastic rocks Organic matter evolution characteristics, the division of the thermal evolution stage; Finally, predicts the potential of each source rock, Triassic, Diego Diego has the potential to produce liquid hydrocarbons, while the Carboniferous, Devonian and Silurian are produced Potential for condensate and natural gas.