Experimental studies of the capillary desaturation curve in polymer-surfactant flooding

Abstract

The paper presents the results of laboratory studies of polymer-surfactant flooding on core samples of different permeability. The obtained data are used in hydrodynamic modeling.
 Experimental studies included:
 • study of the dynamics of oil displacement, plotting the dependence of the residual oil saturation on the surfactant concentration – interfacial tension at the interface of the surfactant-oil solution;
 • comparative experimental studies of residual oil saturation when oil is displaced by surfactant compositions of various manufacturers;
 • comparative studies of phase permeability in flood experiments for the filtration of oil and water, oil and polymer-surfactant solution at different ratios in the flow.