Experimental and Computational Complex for Determination of the Effectiveness of Cyclic Carbon Dioxide Injection for Tight Oil Reservoirs

The problems of numerical and experimental modeling of cyclic carbon dioxide injection in a supercritical state for low-permeability reservoirs were considered in this study. Sensitivity analysis of the cumulative oil production from a number of physical - chemical parameters of the reservoir was performed. The experimental and numerical simulation of cyclic injection of carbon dioxide (huff-n-puff) on core samples of low permeability reservoirs was carried out. Calculations of phase equilibrium pumping supercritical fluid were conducted. Two-dimensional model was proposed for huff-n-puff technology of cyclic injection of CO2, which is a periodic pumping in and pumping out of the solvent into the formation.