Effect of Sodium Oleate Surfactant Concentration Grafted onto SiO₂Nanoparticles in Polymer Flooding Processes

Abstract

nanoparticles showed a slight effect on the viscosity of the polymer solution and high influence on the IFT reduction and wettability alteration of the porous medium leading to an increase of the capillary number. Displacement tests showed that the oil recovery could increase up to 23 and 77% regarding polymer flooding and water flooding, respectively, by including the surface-functionalized materials.