高尚堡油田沙三段二、三亚段沉积体系与沉积相

SEDIMENTARY SYSTEM AND FACIES OF Es SUBMEMBERS IN GAOSHANGPU OILFIELDS

游秀玲 金彦君 常学军

You Xiuling Jin Yanjun Chang Xuejun

高尚堡油田沙河街组三段二、三亚段为湖岸沉积体系,属扇三角洲沉积。扇三角洲由三个亚相组成,而构成其主体的则是扇三角前缘亚相,尤以近岸水下分流河道最为发育,为含油气性最好的砂体,远端席状砂次之。沉积相带与含油气性有较好的相关性,据此对区内断块进行评价预测,指出30个有利含油相带,28个较有利含油相带。

The second and third submembers in the third member of Shahejie Formation(Es) in Gaoshangpu Oilfields are lakeshore sedimentary system of fan delta facies.The fan delta facies consists of three subfacies,and delta front subfacies is the main body.Nearshore subaqueous channel sandbodies developed well and these are most potential oil bearing places,distal sheet sands are secondary.It has been proved that sedimental facies and belts bear fine correlation with oil bearing potential.According to this point,fault blooks within the study area were estimated and predicted,the results suggest that thirty of them are favourable hydrocarbon bearing belts and twenty eight of them are secondary favourable belts.

10.11743/ogg19970103