海上浅水三角洲油田砂体构型研究——以渤中19-25地区为例

Research on Shallow River Delta Reservoir Architecture:A Case Study of Bozhong 19-25 Oil Field

针对海上浅水三角洲相油田储层展布的复杂现象,建立等时地层格架,分析浅水三角洲砂体的储层构型,确定该地区地层对比的稳定分布标志层。通过五级构型分析认为,发育的浅水体三角洲砂体模式包括:连片状分流河道与河口坝组合模式;条带状分流河道与天然堤组合模式。通过四级构型分析认为,连片状的砂体均由多期次单河道砂体组成。同时,根据单一分流河道识别标志分析,识别出单一分流河道。

According to the complex sand distribution of shallow river delta, the reservoir architecture of shallow riv- er delta is analyzed based on the isochronous formation framework and the two stable marker layers are also recog- nized. The fifth reservoir architecture analysis shows that contiguous distributary channel sand combined with mouth bar and narrow river sand combined with natural levee. And the fourth reservoir architecture sees that the continu- ous distributary channel can be divided into various single river based on the single river marker identification and sandstone thickness map.