Abstract: This paper gives the details of sedimentary settings, genesis types, and sedimentary characteristics of the Es3 reservoir in Baimiao gasfield in Dongpu depression by a comprehensive study using geological well logging and seismic data.Regional depositional model of a nearshore subaqueous fan in Baimiao gasfield is suggested.Finally, according to the situation of gas occurrence in studied area, the middle fan of a nearshore subaqueous fan is determined to be the most favourable reservoir unit and a target for oil and gas exploration in future is proposed.

摘要： 综合地质、测井、地震和室内分析化验等多方面的资料,对东濮凹陷白庙气田沙三段储集体的沉积背景、成因类型和沉积特征进行了详细研究,建立了白庙气田近岸水下扇的区域沉积模式,并结合目前研究区天然气的富集状况,确定近岸水下扇中扇亚相为白庙气田的最佳储集单元,进而指明了今后油气勘探的方向。

关键词: 东濮凹陷, 近岸水下扇, 沉积模式, 储集层, 油气, 沉积特征, 沙河街组三段