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采用有机岩石学和有机地球化学相结合的方法，系统研究了东海盆地Ｘ凹陷下第三系烃源岩生烃母质、原油化学组成与油源、有机质热演化与生烃模式。该区烃源岩（煤和泥岩）富含树脂体（全岩平均含量达４％，相对含量占１５％～５０％），且树脂体含量与烃源岩总烃含量呈密切的正相关性。光学显微镜下，烃源岩中发现大量由树脂体母体衍生的渗出沥青体，表明了树脂体的早期生烃。花港组轻质原油源自同组的泥岩，均具有树脂生源成因的烃类组成特征。利用镜质组反射率、孢子体荧光变化，可将该区烃源岩有机质热演化划分为４个演化阶段。在此基础上，初步建立了该区烃源岩生烃模式，即以树脂体为主要母质的低熟油生成带（Ｒｏ＜０．５５％）和以孢子体、藻类体等富氢组分为代表的常规成熟油气生成带（Ｒｏ为０．５５％～１．３０％）。
Based on the combination of organic petrology and organic geochemistry, the hydrocarbon generation parent material, crude oil chemistry composition, oil source, organic matter thermal evolution and hydrocarbon generation mode of the Tertiary source rocks in the X sag of the East China Sea Basin are systematically studied. The source rocks (coal and mudstone) in this area are rich in resin body (the average content of the whole rock is up to 4% and the relative content is from 15% to 50%), and the content of resin body is closely related to the total hydrocarbon content of source rocks . Under the optical microscope, a large amount of seepage bitumen derived from the resin matrix was found in the source rocks, indicating the early hydrocarbon generation of the resin body. The light crude oil from the Huagang Formation originated from mudstones in the same group, all of them have the hydrocarbon compositional characteristics of the origin of the resin source. Using the vitrinite reflectance and sporophyte fluorescence changes, the thermal evolution of organic matter in the source rocks can be divided into four stages of evolution. On this basis, the hydrocarbon generation modes of source rocks in this area are preliminarily established, that is, the low-mature oil formation zone (Ro <0.55%) with the resin parent as the main parent material and the hydrogen-rich components such as sporophyte and algae Representative of the conventional mature hydrocarbon generation zone (Ro is 0.55% ~ 1.30%).