Abstract
An approximate analytical method is developed for calculating plane filtrational flows of a two-phase multicomponent incompressible liquid in a porous medium. The method is based on the assumption that the streamlines in multiphase multicomponent filtration are the same as in the flow of homogeneous incompressible liquid. On this assumption, the initial problem reduces to solving the two-dimensional problem of the filtration of a homogeneous incompressible liquid and the one-dimensional problem of multiphase displacement. Accurate solutions of both problems are obtained. The integral characteristics of the flow are calculated. As an example, the displacement of petroleum by means of an aqueous polymer solution is considered.
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