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动态流动单元是在前人关于流动单元研究基础上的发展。动态流动单元的研究不仅以岩石地质、物理性质为基础,还引入油藏流体性质参数。在开发过程中油藏流体是变化的,因此动态流动单元也是变化的。在开发的不同阶段有不同的流动单元分布特点,开发初期确定的动态流动单元代表着油藏原始状态。文中以某油田J2井为例,用三种不同的方法选用流动系数、存储系数、净/毛厚度比、含油饱和度和饱和度中值压力为特性指标,用模糊ISODATA划分动态流动单元。把流动单元的静态和动态对比分析发现:动态流动单元更接近开发,可以直接为开发方案的调整提供依据。
The dynamic flow unit is based on the previous research on the flow unit. The study of dynamic flow units not only based on the geology and physical properties of rocks, but also introduced the parameters of reservoir fluid properties. Reservoir fluids are changing during development, so dynamic flow cells also vary. In different stages of development, there are different distribution characteristics of flow units. The dynamic flow units identified in the early stage of development represent the original state of the reservoir. Taking J2 oil well in an oilfield as an example, the flow coefficient, storage coefficient, net / gross thickness ratio, oil saturation and saturation median pressure were chosen as the performance indexes by three different methods. The dynamic ISODATA was used to divide the dynamic flow cell. The static and dynamic comparative analysis of flow cell shows that dynamic flow cell is closer to development and can directly provide the basis for the adjustment of development scheme.