The article discusses issues related to the development of a carbonate formation in an oil field. Specifically, the incomplete coverage of the deposit by the stationary flooding and the high water content of the produced fluids. The analysis of the target formation structure revealed the presence of geological heterogeneities, which are the root cause of the existing problems. To solve them, it is proposed to use the cyclic flooding method which is a cost-effective solution for enhanced oil recovery, as it redistributes pressures in the reservoir and alters filtration flows to recover additional oil from poorly drained zones. This technology is preferred over other expensive methods. The authors propose geological and technical measures to improve the development system in response to various possible cycles of transient flooding. The study focuses on hydrodynamic modeling using Tempest More software for standard injection and cyclic pumping. Each variant is analyzed for technological efficiency; the choice of the optimal option is justified. The economic evaluation of implementing non-stationary waterflooding technology in combination with selected geological and technological measures is presented. Based on the results obtained during the work the authors have established the technical and economic efficiency of this proposed method for solving development problems of the target formation.
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