源外斜坡区油气运移主控因素及优势路径刻画——以渤海海域石臼坨凸起斜坡区为例

Main controlling factors to hydrocarbon migration and dominant paths description in slope area outside of source area: a case study of Shijiutuo Uplift slope area, Bohai Sea

杨传超 张新涛 郭涛 姚城 郭瑞 张震

中海石油（中国）有限公司天津分公司，天津 300457

Tianjin Branch of CNOOC Ltd., Tianjin 300457，China

随着勘探程度的提高，渤海海域凸起高部位构造圈闭已勘探殆尽，凸起斜坡区成为下步勘探重点。对油气运移路径认识不清，制约了斜坡区的进一步油气勘探。通过综合分析石臼坨凸起斜坡区的石油地质特征，提出了“源￣断￣脊”三元耦合控制凸起斜坡区油气聚集成藏模式。结合盆地流线模拟技术，对凸起斜坡区的油气优势运移路径进行精细刻画，共刻画13条油气优势运移路径。勘探实践证实，位于油气优势运移路径上的构造、构造￣岩性圈闭是油气成藏的有利区。

The structural traps of the high part have been fully explored on the Shijiutuo Uplift in Bohai Sea, and the slope area has become the key point of the next exploration, but being unclear of oil and gas migration is the core problem that restricts the exploration of oil and gas in the slope area. This paper presents the "source-fault-ridge" ternary elements coupled controlling the dominant hydrocarbon path in the slope area by the analysis of the chacteristics of Shijiutuo Uplift slope area. Combined with the flow line simulation technique of the basin, 13 hydrocarbon migration paths are depicted in the research area. The exploration practice has proved that the tectonic or tectonic lithologic traps are favorable areas for reservoir located on the dominant hydrocarbon migration path.

10.6056/dkyqt201806003