Experimental study of alkaline-surfactant-polymer compositions for ASP-flooding of cores from highly viscous oil reservoirs
U.K. Zhapbasbayev, S.E. Kudaibergenov, A.E. Mankhanova, and R.M. Sadykov
Kazakh National Research Technical University after K.I. Satpaev, Almaty, Kazakhstan
E-mail: uzak.zh@mail.ru
Keywords: highly viscous oil, alkaline-surfactant-polymer (ASP) flooding, Winsor type III emul-sion, phase behavior
Pages: 909–916
Abstract
The
paper presents experiments on using alkali-surfactant-polymer compositions (for ASP flooding) in tests on cores saturated with highly viscous
oil. The phase behavior was evaluated for solutions with different
concentrations of alkali (NaOH) and surfactant (SDS) after mixing with highly viscous oil samples; this defined
the optimal agent compositions for producing Winsor type III emulsions. Experiments on core saturated with highly
viscous oil demonstrated the pumping of ASP agent in the form of aquatic
solutions surfactant/alkali and polymer after regular water flooding
give the gain in the oil displacement in the range from 19 to 37 %.
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