Review of improving oil recovery using ASP flooding

As a relatively new technology of tertiary oil recovery, alkaline/surfactant/polymer (ASP) flooding hasbeen studied extensively in the last two decades. ASP flooding enhances oil recovery through two majormechanisms: increasing the viscosity of displacing solution to improve the sweep efficiency by usingpolymer and reducing oil-water interfacial tension (IFT) to a very low value (~۱۰-۳ mN/m) to improvethe pore level displacement efficiency through the synergetic effect of surfactant and alkaline. Field testsand laboratory studies have shown that ASP flooding is more efficient than any single componentflooding, such as alkaline, surfactant, or polymer flooding. At present, it is a promising tertiary recoverymethod and is getting increasingly more attention.

کلیدواژه ها:

Chemical-Enhanced ، Asp Flood ، Surfactant ، Recovery ، IFT