沾化凹陷新生界构造样式与油气分布

Structural style and hydrocarbon distribution of Cainozoic in Zhanhua Depression

崔营滨

Cui Yingbin

中国石化胜利油田分公司地质科学研究院，山东 东营 257015

Geological Research Institute, Shengli Oilfied Company, SINOPEC, Dongying 257015, China)

利用地震、钻井及地质资料，对研究区的构造样式进行了系统识别，通过分析各类构造样式内部的沉积类型和输导体系，研究了构造样式对油气分布的控制作用。研究结果表明，沾化凹陷新生界主要发育翘倾断块、滑动断阶、潜山披覆和重力背形4类伸展构造样式，其分布呈现出明显的规律性；各类构造样式对油气运聚的贡献有所差异，翘倾断块和滑动断阶是油气向盆地边缘运移的有利通道，堑垒断块、潜山披覆油气最易富集，重力背形的油气富集程度受规模、油源、储层发育程度等多个因素的控制。

Based on seismic, drilling and geological data, the structural styles are systematically identified in study area. Through the analysis of internal deposit types and migration pathways of all kinds of structural styles, this paper researches the control action of the structural styles on hydrocarbon distribution. The research results show that four types of stretch structure styles, including warped pour block, sliding step, buried hill with overlying and gravity antiformal, developed in Cainozoic in Zhanhua Depression. The distributions of various structural styles show obvious regularity. Different kinds of structural styles contribute differently in migration and accumulation of hydrocarbon. The warped pour block and the sliding step are the favorable channel of hydrocarbon migration towards basin edge. The hydrocarbon is most easily enriched in the cut barrier block as well as the buried hill with overlying. The hydrocarbon enrichment in the gravity antiform can be affected by scale, oil source, reservoir development degree.

10.6056/dkyqt201303007