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Early shutting time in production wells due to water production performs an important role to determine production efficiency and useful life of the reservoir. In this study, in order to postpone the shut-in time of producing wells, increase oil displacement, and enhance production efficiency, production and injection wells capabilities with respect to their position in the reservoir were studied by using the concept of streamline. In the oil reservoirs, increasing injection flow rate does not necessarily enhance oil displacement and recovery. Therefore, suitable injection rates according to injection and production wells position have to be optimized. Also, production wells flow rate can affect sweep efficiency optimization extremely and increase the efficiency of injection wells. In this study, according to the position of production and injection wells and water production rates resulting from injection wells, four scenarios with different injection and production rates were investigated. This optimization has led to a reduced water production and water injection. Also, it increased the production efficiency and reservoir life.

Optimizing volumetric sweep efficiency in water flooding by streamline simulation