Role of active clays on alkaline-surfactant-polymer formulation performance in sandstone formations

► We ran experiments on two reservoir rocks to demonstrate impact of active clays on recovery. ► We demonstrate that active clays can hinder the performance of alkaline-surfactant-polymer. ► Geochemical model predicts relatively well effluent chemistry during corefloods. ► Detailed experimental and modeling work lead the way in generating predictive EOR models.