关键词: 复杂介质, 流体渗流, 微分原理, 广义渗流描述法

Abstract: The experiments and practice demonstrate that the non-linearity of fluids flow and variability of flow states are the main features of fluids flow in the reservoirs composed of complicated media.How to describe the non-linearity and variability is a focus being concerned widely in the field of current percolation flow dynamics, and it is still a pendent problem at present. According to the non-linearity of the flow curve and the differential theory,a generalized description method for fluids flow was proposed.The principle and operation steps of this method,as well as the aspects which should be noticed during the usage are all discussed.This method not only could represent the non-linearity of fluids flow,but also give conveniently the equations for describing the fluids flow at any flow velocity and pressure gradient.Thereby it could efficaciously characterize the variability of the fluids flow state.

Key words: complicated media, fluids flow, differential theory, generalized description method for fluids flow