A review of fluid displacement mechanisms in surfactant-based chemical enhanced oil recovery processes: Analyses of key influencing factors

Surfactant-based oil recovery processes are employed to lower the interfacial tension in immiscible displacement processes, change wettability of rock a more water-wet system and emulsify displace it subsurface porous media. Furthermore, these phenomena can reduce capillary pressure enhance spontaneous imbibition. The key factors affecting such process temperature, salinity pH fluids, surfactant concentration adsorption. Therefore, before any flooding is applied, extensive studies fluid-fluid rock-fluid interactions needed. use other chemicals along with surfactants chemical enhanced (cEOR) have been widely considered exploit synergy individual complement weakness arises from each them during fluids combinations lead alkaline-surfactant (AS), surfactant-polymer (SP), alkaline-surfactant-polymer (ASP), nanoparticle-surfactant (NS) among others. In this review study, we categorised role mechanisms discussed be for analysing fluid