中文摘要：

根据沉积构造、古生物组合、有机质赋存方式等特征研究,明确了沉积过程底水含氧量对古近系湖相烃源岩中有机质的组成和含量的控制作用。在此基础上借鉴沉积有机相和古氧相研究的成果,将济阳坳陷古近系沙四段上亚段湖相烃源岩划分为四种沉积有机相,分别为缺氧相、短暂充氧相、低氧相、充氧相,并且确定了不同类型沉积有机相的判识标志。并结合测井资料开展了烃源岩沉积有机相的单井、连井及平面分布特征分析,提出沙四段上亚段烃源岩的发育存在着明显的东西差异,东部地区明显优于西部地区,而不同走向断裂的活动差异控制了优质烃源岩的分布。沙四段上亚段烃源岩的分布规律对于下一步勘探决策的制定和深层隐蔽油气藏成藏规律研究具有重要意义。

英文摘要：

Investigation of sedimentary structures,palaeontology associations and organic matter occurrence shows that the lacustrine deposition of Palaeogene upper E2-3s4 hydrocarbon source rocks is significantly controlled by the bottom anoxicity in Jiyang Depression. Based on the previous studies on sedimentary organic facies and palaeo-oxygen facies,the source rocks are divided into four types of sedimentary organic facies including anoxic facies anaerobic facies,dysaerobic facies,and aerobic facies,and the identification markers of each facies are summarized. Together with well logging data,the upper E2-3s4 source rocks are evaluated by single well,well-tie and distribution of sedimentary organic facies analyses. The results show great difference in the occurrence of the upper E2-3s4 hydrocarbon source rocks from the east to the west,and the upper source rocks in the east are obviously superior to those in the west. In addition,it is found that the distribution of excellent source rocks is mainly controlled by the northwest and northeast faulting movement. The finding will have great significance for making future exploration strategy and understanding deep subtle reservoir formation.