Paper: ALKALINE-SURFACTANT-POLYMER FLOODING PRINCIPLES AND APPLICATIONS

About two trillion barrels of oil will remain in the existing reservoirs without implementing enhanced oil recovery. Chemical recovery offers the most obvious and attractive method to recover this oil. Alkaline-Surfactant-Polymer (ASP) is the most promising chemical EOR process due to the synergism of alkaline, surfactant and polymer flooding. In this presentation, we will discuss the following: 1)Mechanisms of individual polymer, surfactant and alkaline processes, 2) ASP synergistic mechanism, 3)Laboratory evaluation procedures, 4) Status of ASP application, 5) A field case of commercial ASP application, 6) Problems with the ASP field application.