东营凹陷沙二段构造油藏成藏规律
Reservoir Formation Law for Structure Reservoir of the Second Member of Shahejie Formation in Dongying Depression

东营凹陷沙二段是认识程度较低的层系，具有较大勘探潜力。通过对东营凹陷沙二段构造油藏成藏条件进行统计分析和典型油藏解剖，明确了沙二段构造油藏成藏规律：沙二段构造油藏来自沙三下亚段和沙四上亚段烃源岩，具有单一油源或多源混合成藏得特点，既有沙三下亚段、沙四上亚段烃源岩产生油气的混合，也有不同洼陷来源的油气混合；输导体系由油源断层和骨架砂体组成，具有三种油气输导方式，即油源断层垂向输导，断层砂体侧向输导，断层砂体阶梯性输导，以油源断层垂向输导为主；断层和三角洲平原–前缘和滩坝砂体匹配控制了构造圈闭的形成。该成果对济阳坳陷沙二段构造油藏勘探有一定指导作用。
The second member of Shahejie Formation in Dongying Depression is a low level of understanding and has great exploration potential. Through the statistical analysis of reservoir formation conditions and typical reservoir anatomy of structure reservoirs, the reservoir formation law of the second member of Shahejie Formation is determined: The structure reservoirs of the second member of Shahejie Formation from the source rocks of the lower part of the third member of Shahejie Formation and the upper part of the fourth member of Shahejie Formation have features of single oil source or multi-source mixing from Es3L source rock and Es4u source rock or different sags; The transport system is composed of oil source fault and skeleton sand body. It has many kinds of oil and gas transport modes that are oil source fault vertical transportation, fault-sand body lateral transportation, fault-sand body ladder transportation, mainly oil source fault vertical transportation; Fault and delta plain-front and beach bar sand body matching control the formation of structure traps. The results have certain reference for structure reservoir exploration in Jiyang depression.