裂缝性油藏管道网络模型数值模拟方法研究

Study on Integrated Pipe Network Model for Simulation of Fractured Reservoirs

目前模拟裂缝性油藏的模型主要有双重介质模型、等效渗透率模型和离散网络模型,但是它们在油田开发中的应用都有一定的局限性。系统深入地研究裂缝性油藏的描述方法和数值模拟技术及其在油田开发中的应用已成为一个重要的课题。管道网络模型是根据油藏中裂缝的分布和走向,在二维或三维空间中建立一种规则的或不规则的管道网络,管道网络即是油藏流体的流动通道。综合考虑了流体流动中可能存在的渗流和管流,耦合渗流模型和管流模型,建立了同时考虑流体渗流和管流的二维的裂缝性油藏管道网络模型,并用管道网络模型对反五点法理论模型进行了模拟。

Some models for simulation of fractured reservoirs,such as Dual Porosity/Permeability Model,Single Porosity Model and Discrete Fractured Network Model are introduced in this paper.However,a certain limitation exists in the oilfield development for the above models.Systematical study in fractured reservoir simulation is very important.Pipe Network Model consists of constructing a regular or irregular pipe-network in 2D or 3D space according to major fracture distribution and orientation in reservoirs.Pipe network is the channel for fluid flow.Furthermore,the Integrated Pipe Network Model for simulation of fractured reservoirs,which considers both the fluid flow in porous medium and the fluid flow in pipes,is established.