An Influence of Polymer-Alkaline and Nanoparticles as Chemical Additives on the Immiscible Displacement and Phase Relative Permeability

Abstract

In this study, a chemical additive made by a combination of polymer, alkaline, and silica nano<br />particles is used to control the oil recovery and relative permeability curves. Various parameters<br />including the type and concentration of polymer, alkaline, and nanosilica particles have been studied.<br />To evaluate the efficiency of these additives, we performed unsteady state displacement experiments<br />under the JBN method and determined the pressure gradient across the core samples. The<br />experimental observations emphasized that by using the appropriate chemical additives the relative<br />permeability of the phases is changed towards higher oil relative permeability values, which results in<br />the oil recovery. The results of this study can improve the chemical flooding for heavy oil recovery.