中文摘要：

运用地球化学与沉积学、石油地质学相结合的方法,从深层烃源岩空间展布及沉积有机相分析入手,研究济阳坳陷深层有利勘探方向。济阳坳陷古近系深层孔店组—沙四段烃源岩发育缺氧有机相、短暂充氧有机相、低氧有机相和充氧有机相4种沉积有机相类型,缺氧相、短暂充氧相优质烃源岩主要发育在沙四段,孔店组烃源岩主要为低氧有机相、充氧有机相,为一般烃源岩。排烃过程可分为自由排水、烃类生成和能量积累及微裂隙排烃等3个阶段,深层烃源岩的排烃主要发生在微裂隙排烃阶段,不同地质条件下可发生垂向运移、侧向运移和向下运移3种油气运移方式。已探明中浅层源自沙四段缺氧有机相、短暂充氧有机相优质烃源岩的油气藏,主要通过沿断裂的垂向运移方式成藏,而大量以侧向运移及向下运移方式形成的油气藏尚有待于揭示。古近系深层仍具有较大的勘探潜力。

英文摘要：

The favorable exploration prospects in the Jiyang Depression,Shengli Oilfield,are discussed using geochemistry,sedimentary and petroleum geology methods,and based on the analysis of spatial distribution of deep source rocks and sedimentary organic facies.There are 4 types of sedimentary organic facies（anoxic organic facies,anaerobic organic facies,dysaerobic organic facies and aerobic organic facies） in deep source rocks of Palaeogene Kongdian Formation-Sha-4 Member.Anoxic facies and anaerobic facies source rocks are discovered in the Sha-4 Member and are proved as excellent source rocks,while the Kongdian Formation source rocks are composed mainly of the dysaerobic facies and aerobic facies,as common source rocks.The whole hydrocarbon expulsion process is divided into 3 stages,including free water expulsion,hydrocarbon generation and energy accumulation,and hydrocarbon expulsion from microfractures.The hydrocarbon expulsion from deep source rocks mainly occurs in the stage of hydrocarbon expulsion from microfractures.There are three oil and gas migration modes under different geologic conditions,including vertical migration,lateral migration and downward migration.The studies indicate that the hydrocarbons in shallow and medium formations from the Sha-4 Member excellent source rocks of anoxic and anaerobic facies are mainly accumulated through vertical migration along the faults,while the reservoirs formed by lateral migration and downward migration have not been revealed.There is a great exploration potential in the deep Palaeogene of the Jiyang Depression.