双重各向异性介质的驱替特征及注水开发井网部署研究

双重各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风的部署问题。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。

A STUDY ON DISPLACEMENT CHARACTERISTIC OF DUAL ANISOTROPIC MEDIUM AND PATTERN ARRANGEMENT OF WATER FLOODING DEVELOPMENT

Dual anisotropism is a basic characteristic of porous medium. It has an effect on the flow of reservoir fluid and oil and gas production. This paper takes 5-point-pattern as an example and uses numerical method to study the displacement characteristic of dual anisotropic medium and the pattern arrangement of water flooding development. The displacement process of dual anisotropic medium is not isostatic. The injected fluid advances optimizingly along the direction with the increase of permeability and makes the oil wells in this direction initially contain water. If the positions of water injection wells are adjusted according to the permeability ratio, the initial water appearance of oil wells can be controlled and the displacement process of reservoirs can be equilibrium.