摘要
中央凸起是西部凹陷、东部凹陷和大民屯凹陷油气运移的指向,油气聚集主要受运移和盖层条件的控制;以地层岩性圈闭为主,存在着上倾尖灭、地层超覆及断层遮挡岩性油气藏三种典型的油气藏成藏模式。南部倾没端、东侧斜坡带及与凸起接触的断裂下盘三个区块是最有利的油气聚集区。
The Central Rise is situated at the migration direction of the West, East, and Damintun sags. Its petroleum accumulation is controlled by migration and caprock conditions, with stratigraphic trap being the major type. Their are three typical reservoir-forming models. i.e., updip pinchout, overlap, and fault screened oil reservoir. The southern plunging end. the east slope side, and the down-thrown side of rise-contact faults are the most favorable oil accumulation zones.
关键词
辽河盆地
中央凸起
圈闭
油气聚集
Liaohe basin
Central rise
trap
pool-forming model
hydrocarbon accumulation
