东海西湖凹陷保俶斜坡地质条件及含油气远景

Geological Conditions and Hydrocarbon Potential in the Baochu Slope of Xihu Sag, the East China Sea

胡惠娟 朱立新 王文强

Hu Huijuan Zhu Lixin Wang Wenqiang

上海海洋石油局规划设计研究院

Planning & Designing Institute of Shanghai Offshore Petroleum Bureau

保俶斜坡属西湖凹陷新生代沉积的大型缓坡带,具有复杂的、独特的沉积和构造格局。本文着重论述保俶斜坡下第三系(目的层段)的地质条件,对含油气性进行了综合分析,认为已钻探区(平中、平北)为有利的油气富集区,并预测未钻探区(平南、海礁湾、迎翠轩)为潜在的含油气远景区。

The Baochu slope in the Xihu Sag, deposited in Cenozoic, is a large slow slope belt.The Slope has complex and unique framework of sedimentation and structure. In this paper, the gelolgical conditions of the Paleogene (formations of interest) in the Baochu slope is empatically recounted. The results from analysis of hydrocarbon system that are drilled areas (Pinpzhong and Pingbei)are the prolilic areas for the oil/gas accumulating, and the undrilling areas (Pingnan, the Haijiao bay and Ying Cuixuan) are predicted as the hydrocarbon potential areas.