沈庄洼陷烃源岩的显微组分研究及生油潜力评价

采用有机岩石学方法，对山东临清坳陷中沉庄洼陷下第三系沙河街组各层段烃源岩的显微组分组成，热演化特征和生油潜力等方面进行了研究。结果表明：沙三段有机显微组分丰度最高质量最佳，富含富氢组分；其镜质组反射率Ｒｏ，孢子体荧光参数和矿物沥青基质荧光强度变化均是良好的成熟度指标；沙三段生潜力评价得分最高，是该区最佳生油层段。有机地球化学资料佐证了上述结论。

Macerals Analysis and Source Potential Assessment of the Source Rocks in Shenzhuang Sub-sag

Using the method of organic petrology. this paper conducts a study on maceral composition, thermal evolution characteristics and oil generation potential of source rocks from different member of Shahejie Formation in Shenzhuang sub-sag. The results show that source rocks from member 3 of Shahejie Formation (Es3) are the highest in macerals abundance and the best in quality, which contain a large amount of hydrogen-rich macerals. Vitrinite reflectance. the fluorescence parameters of sporinite and the alteration of fluorescence intensity of mineral-bitumen groundmass are all good maturity indexes. Member 3 of Shahejie Formation has the highest oil generation potential and so is the main oil generation member in this area. All conclusions above are proved by the data of organic geochemistry.