Model of the unsteady two-phase three-component filtration of the oil-water-supercritical fluid system in a homogeneous porous medium

摘要

A mathematical model of the two-phase three-component filtration of the oil-water-supercritical fluid system in a porous medium is developed. The results of numerical simulations of the three-component two-phase filtration during oil displacement by supercritical CO2 from a watered stratum are reported. In the region of oil displacement from watered stratum, there is a significant discrepancy between the experimental and simulation results because of the transient mode of filtration associated with the concurrent saturation of the oil and water with supercritical CO2 under high pressure. In the region of two-phase filtration of the oil-water system and in the region of pumping of three or more pore volumes of supercritical CO2, the deviation of the simulation results from the experimental data does not exceed 10%.