高邮凹陷阜三段沉积相分析

Sedimentary Facies Analysis of the 3^(rd) Member ofFuning Formation in Gaoyou Depression

根据岩心微相分析、砂体形态和测井剖面对比分析 ,对阜三段各亚段的沉积微相进行了研究 ,掌握了沉积微相的时空展布和变化规律。在三角洲前缘发育区 ,由东北向西南方向 ,相带分异比较明显 ,由三角洲前缘的水下分流河道 -河口砂坝变为前缘席状砂和前三角洲及较深水湖泊相沉积。水下分流河道和河口砂坝砂体相互连接 ,形成厚度较稳定的三角洲前缘复合体 ,储油物性较佳。

Sedimentary microfacies of the 3 rd member of Funing formation in Gaoyou Depression are interpreted jointly with careful core descriptions and logging data. The reservoir sandbodies in this area are river dominated deltaic sands. The main sedimentary microfacies include distributary channel, distributary mouth bar, front sand sheet and interdistributary deposits. The relatively stable distributaries sands spread out along the prograding delta front and constitute the dominated petroleum reservoirs.