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针对沧东凹陷,深化孔二段基本成藏条件研究,构建不同类型斜坡的油气成藏模式,反转型斜坡的中高斜坡、继承性斜坡的中低斜坡位于辫状河三角洲前缘亚相,供储匹配关系好,利于岩性地层油藏的形成。湖盆中心,油页岩发育段夹薄层砂岩、白云岩类储层具备储集性能,利于页岩油、致密油藏的形成。指出沧东凹陷孔二段源储一体,大面积连片含油,是岩性地层油藏勘探的现实领域,并取得良好的应用效果。
According to the study of Cangdong Sag, the basic reservoir forming conditions of the second member of the Konggou Member are deepened, and the hydrocarbon accumulation modes of different types of slopes are built. The medium and high slopes of inverted slopes and the middle and low slopes of inherited slopes are located in the subfacies of the braided river delta front, The relationship between reservoir and reservoir is good, which is conducive to the formation of lithologic reservoir. In the center of the lake basin, sandstone and dolomite reservoirs in the oil shale development zone have reservoir properties, which are favorable for the formation of shale oil and tight oil reservoirs. It is pointed out that the source and reservoir of the second member of Cangdong Depression are integrated with one another and large area of contiguous oil is the realistic field of lithologic stratigraphic reservoir exploration, and achieved good application results.