多层非均质油藏聚水同驱物理模拟实验研究

Study on Physical Simulation Experiment of Simultaneous Water Flooding and Polymer Flooding with Multilayer Heterogeneity Model

针对多层非均质油藏同步进行聚合物驱和水驱的开发方式,通过物理模拟实验的手段研究不同注入压力比例条件下的水聚接触带的分布、平面及纵向含油饱和度分布、聚水同驱的阶段采出程度及不同位置生产井的含水率变化特征。实验结果表明,多层非均质油藏水聚同驱时,维持注水区域压力与注聚区域压力相等可以获得较好的开发效果,对于指导相似油田聚水同驱的现场应用具有一定的指导意义。

Based on the simultaneous water flooding and polymer flooding development mode, the distribution of water and polymer contact zone, horizontal and vertical oil saturation, water cut characteristic of the wells in different position, recovery percentage in different pressure ratio of multilayer heterogeneity artificial core has been stud- ied with physical simulation experiment. The experimental results show that the balanceable pressure between water flooding zone and polymer flooding zone is beneficial for the development, which could give a reasonable guide for polymer flooding technology used in offshore oilfield.