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斜坡带是岩性油藏发育的重要区带,也是济阳坳陷油气勘探的重要地区,目前已发现了陈家庄、罗家和孤岛等多个油气田。本文以埕岛东部斜坡带东营组为例,通过研究斜坡带的构造特征、沉积体系特征、储层分布特征及其与油气运移、成藏的关系,指出较深水湖浊积扇及扇三角洲前缘滑塌浊积扇砂体是形成岩性油藏的基础,油源断层及最大湖泛面控制了岩性油藏的分布。在层序地层学理论的指导下,对东营组岩性油藏储层的空间展布进行了预测,最终指导该区的下步勘探部署。
The slope zone is an important zone for the development of lithologic reservoirs and an important area for oil and gas exploration in the Jiyang Depression. So far, several oil and gas fields such as Chenjiazhuang, Luojia and Gudao have been discovered. Taking the Dongying Formation in eastern slope of Chengdao as an example, the paper studies the structural features of the slope belt, sedimentary system characteristics, reservoir distribution and its relationship with hydrocarbon migration and accumulation, and points out that the turbidite fan and fan delta Turbidity turbidite sand bodies are the basis for the formation of lithologic reservoirs. The source faults and the largest lake face control the distribution of lithologic reservoirs. Under the guidance of the theory of sequence stratigraphy, the spatial distribution of lithologic reservoirs in Dongying Formation is predicted, which will ultimately guide the exploration and deployment of the area.