The most promising current research efforts worldwide are associated with the development of efficient physical and chemical enhanced oil recovery methods that enable production of both mobile oil reserves due to improved reservoir sweep efficiency and recovery of residual oil, thus increasing achievable oil recovery factors. Out of many enhanced oil recovery methods, polymer-based flow diversion technologies have gained the widest acceptance internationally. Under conditions of unstable oil prices, determination of optimal injection volumes and componential concentrations becomes increasingly important to ensure cost-effective application of enhanced oil recovery technologies. Such decisions should be made based on extensive studies, while analysis of the results should consider volatile economic environment. Reservoir simulation modeling is commonly used to adjust parameters of formation stimulation technologies. The present study involved investigation of physical and chemical properties of the compositions used in the process, laboratory analysis of fluid-loss and oil-displacement characteristics of polymer compositions using reservoir models under conditions simulating a terrigenous reservoir. Laboratory studies provided initial data for numerical modeling of polymer-based formation stimulation process. Polymer flooding simulations were run for various polymer injection volumes and types of polymer composition. Evaluation of economic efficiency of optimal polymer treatment scenarios obtained from modeling data was conducted with due consideration of oil price changes over a wide range.
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