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双重各向异性是多孔介质的一个基本性质, 它对油藏流体的流动乃至油气生产都有一定的影响。以五点井网为例, 用数值方法研究了双重各向异性介质的驱替特征和注水开发井网的部署问题。双重各向异性介质的驱替过程很不均衡, 注入流体沿渗透率增大的方向优先推进, 致使该方向的油井先期见水。若按渗透率比值调整注水井位置, 则能够抑制油井的提前见水, 并能够均衡油藏的驱替过程。
Double anisotropy is a basic property of porous media. It has some influence on the flow of reservoir fluids and even the production of oil and gas. Taking the five-well pattern as an example, the displacement characteristics of double-anisotropic media and the deployment of water injection well pattern are studied numerically. The displacement process of dual anisotropy medium is very unbalanced. Injecting fluid preferentially advances in the direction of increasing permeability, resulting in early seepage of the well in this direction. If we adjust the injection well location according to the permeability ratio, we can suppress the early seepage of the oil well and can balance the displacement process of the reservoir.