Key words: porous medium, two-phases flow, control volume, chemical reaction constant, function distribution.
In this study, the process of flooding the oil reservoir with acid treatment beds was investigated. To describe the effects of acid on the oil reservoir the ideal model of a porous medium in the form of a bundle of cylindrical capillaries and function of pore size distribution are used. The resulting system of equations is solved by the method of control volumes on a uniform grid.
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