渤海P油田限制性高弯度曲流河储层砂体构型研究

Research on Sand Body Configuration of Restricted High Curvature Meandering River Reservoir in Bohai P Oilfield

为了应对渤海P油田开发中面临的砂体分布模式不明确、井间连通性不明确、生产动态矛盾等问题,展开单砂体储层构型精细解剖。以沉积学和储层地质学为基础,充分利用岩心、钻井及地震资料,结合区域沉积背景,对油田地层进行精细划分。识别油田范围内的单河道砂体发育模式,总结出5种典型的砂体切叠模式。在此基础上,识别废弃河道、末期河道等沉积微相并进行边界刻画。利用水槽实验成功还原了其限制性曲流河的沉积过程,厘清了其沉积特点和发育条件。

In order to deal with the problems faced by the development of Bohai P Oilfield,such as the unclear distribution pattern of sand bodies,the unclear connectivity between wells,and the contradiction of production performance,the fine anatomy of single sand body reservoir configuration is carried out in this paper.Based on sedimentology and reservoir geology,the oilfield strata are finely divided by making full use of core,drilling and seismic data and combining regional sedimentary background.The development mode of single channel sand body in the oilfield is identified,and five typical sand body cutting and stacking modes are summarized.On this basis,the identification and boundary characterization of sedimentary micro-facies such as abandoned river channel and late river channel are completed.And the flume experiment is used to successfully restore the sedimentary process and clarify its sedimentary characteristics and development conditions.