Abstract
Digital core analysis (DCA) based on 3D tomography of core samples is widely used for study and description a internal structure of rocks. At present time we can observe a lot of attempts to implement DCA for solving of special problems of multiphase and multicomponent fluids flow in porous media, especially for estimation of relative permeability and oil displacement efficiency by various agents for EOR tasks. But there are some restrictions for replacement of real special core analysis data (SCAL) by DCA results. This paper is devoted to the answer on the question: "can the DCA results reflect the real processes going in scale of core sample. A difference between results of flow parameters measured by DCA and SCAL are demonstrated, especially for value of efficiency displacement and phase permeability.