Impact of Wettability Alteration on the Front Instability of Immiscible Displacement in Porous Media

Wettability alteration that occurs as a result of changing the brine composition or using chemicals lower interfacial tension can significantly alter mobility nonaqueous liquid (NAPL)/water phases. Here, we show including dynamic wettability alternation (moving from non-water-wet to water-wet) interpolating between two sets relative permeability curves may create an unstable displacement residence-fluid by injected fluid. The instability due not only viscosity ratio but also new shape and their end-point values. We perform full factorial design on Corey parameters determine most destabilizing factors when is one. observations indicate proliferates NAPL phase modified salinity increases, corresponding exponents decrease compared with high (seawater formation water). Besides, numerical simulations such demonstrate water (MSW)'s breakthrough accelerated change toward water-wet non-fingering analytical solution. This in delayed mobilization porous media. discuss role capillary pressure, heterogeneity, secondary tertiary injection MSW stabilizing shock front.