英旺油田油气富集条件及成藏特征

Hydrocarbon Enrichment Conditions and Accumulation Characteristics of Yingwang Oilfield

鄂尔多斯盆地陕北斜坡英旺地区延长组长8油层组油源充足,主力储层为三角洲前缘水下分流河道;油气具有以纵向运移为主、叠置复合砂体侧向运移为辅,生烃中心控制油气藏分布的成藏特征。通过本区长8油层组成藏条件的系统研究,得出本区英3井-高94井区、庙1井-龙91井区是长8油层组运聚的有利区域,具有较大的勘探潜力。

The oil source of Chang 8 oil formation in Yanchang formation in Yingwang region of Shanbel slope ot Ordos basra is sufficient, the main reservoir is delta front underwater distributary channel. Hydrocarbon accumulation characteristics are given priority to with vertical migration, superimposed compound sand body lateral migration is complemental, and hydrocarbon generation center controls reservoir distribution. Through the research on accumulation conditions of Chang 8 oil formation, it＇s concluded that Ying3- Gao94 well area and Miaol-Long91 well area are the favorable area of Chang 8 oil formation, and have great exploration potential.