济阳坳陷潜山油气分布规律及富集样式

Distribution regularities and enrichment styles of buried-hill reservoirs in Jiyang Depression

赵凯¹ 蒋有录¹ 胡洪瑾¹ 赵京增² 刘凯²

中国石油大学（华东）地球科学与技术学院，山东 青岛 266580 中国石化胜利油田分公司滨南采油厂，山东 滨州 256600

School of Geosciences, China University of Petroleum, Qingdao 266580, China Binnan Oil Production Plant, Shengli Oilfield Company, SINOPEC, Binzhou 256600, china

济阳坳陷不同地区潜山油气富集程度差异很大，研究潜山油气分布规律及富集样式具有重要意义。文中从潜山油气宏观分布规律入手，结合凹陷地质结构特征，将济阳坳陷潜山油气藏划分为隆起型、陡坡型和缓坡型3类富集样式。通过典型潜山成藏要素分析，明确了不同类型富集样式及成藏主控因素。结果表明：隆起型潜山具有多洼供烃的特点，盖层条件制约潜山油气富集程度；陡坡型潜山具有近源供烃的特点，优质储层条件与有效输导体系的匹配共同控制油气富集；缓坡型潜山离油源较远，生烃洼陷的供烃能力以及有效输导体系的存在共同决定潜山油气的成藏规模。

There are significant heterogeneities in buried-hill hydrocarbon enrichment of different areas in Jiyang Depression. It is important to study distribution regularities and enrichment styles of buried-hill reservoirs. Based on the macroscopic distribution of buried-hill reservoirs in Jiyang Depression and the geological structure, the buried-hill hydrocarbon reservoirs in Jiyang Depression can be divided into uplift type, steep-slope type and mild-slope type. Through the analysis of hydrocarbon accumulation factors in typical buried-hill, the main controlling factors of reservoir formation in different enrichment styles are clarified. The result shows that the uplift-type buried-hill has the characteristics of multi-depression hydrocarbon supply, and the cap rock condition restricts the enrichment degree of the buried-hill reservoirs. The steep slope-type buried-hill is close to the oil source and has the characteristics of near-source hydrocarbon supply. The matching of high-quality reservoir conditions and effective transport system controls the hydrocarbon enrichment. Because the location of mild-slope type buried-hills is far from the oil source, the hydrocarbon supply capacity of hydrocarbon generation sags and the existence of effective transport system determine the accumulation scale of buried-hill reservoirs.

10.6056/dkyqt201802001