东海西湖凹陷平湖组储层成因特征及评价

Genetic Characteristics and Review of Reservoir from Pinghu Formation in Xihu Trough, the East China Sea

陈琳琳 练铭祥

Chen Linlin Lian Mingxiang

上海海洋石油局规划设计研究院, 上海 200120; 中国新星石油公司国际部, 北京 100038

Planning & Designing Institute of Shanghai Offshore Petroleam Bureau; International Department, CNSPC

西湖凹陷位于东海陆架盆地东北部,始新统平湖组是该地区重要目的层,本文针对平湖组主力含油气储层的四个成因类型;潮道、潮汐分流河道、分流河道、河口坝-前缘席状砂的岩石学、沉积学特征分析,预测砂体形态并对各类储层性质逐一评价。

Xihu Trough is located at the east-northem East China Sea shelf basin, and Pinghu Forma tion (Eocene) is the key target in the basin. This paper gives lithological and depositional analyses to four main genetic oil/gas reservoirs of Pinghu Formation including tidal channel, tidal distributary channel, dis tributaly channel and mouth bar-front sheet sand, forecasts these reservoirs shape and makes a review on physital propenies of all reservoirs.