贝尔凹陷西部斜坡带南屯组油气成藏模式

Hydrocarbon accumulation mode of Nantun Formation in western slope belt of Beier
Depression in Hailaer Basin

杨永亮

Yang Yongliang

辽河油田公司勘探开发研究院，辽宁 盘锦 124010

(Exploration and Developent Institute, Liaohe Oilfield Company, CNPC, Panjin 124010, China).

贝尔凹陷断块油藏形成条件研究表明：该油藏成藏条件优越，其断层的封堵性、构造背景、砂体类型等是控制油气成藏的主要因素，并具有受连通砂体输导层、不整合面输导层和断层输导层控制的3种油气成藏模式。文中系统分析南屯组油气成藏条件，总结油气成藏控制因素，建立了完善的油气成藏模式，从而指导南屯组地层的勘探。

The study of forming conditions of fault block oil reservoir in Beier Depression shows that the accumulation conditions were superior. The main controlling factors of hydrocarbon accumulation were sealing characteristics of faults, tectonic setting and types of sand body, etc. And there were three kinds of hydrocarbon accumulation modes, which were respectively controlled by sand bodies connecting carrier beds, unconformity carrier beds and fault carrier beds. This paper systematically analyzed hydrocarbon accumulation conditions in Nantun Formation in western slope belt of Beier Depression, summarized controlling factors of oil
reservoirs and established perfect hydrocarbon accumulation mode, which had certain guiding significance in the exploration of Nantun Formation.