Pilot field tests of a single-component polymer gelling solution were conducted at the pilot areas of one of the fields in Eastern Siberia to ensure conformance control in injection wells and to increase oil recovery. The net-reservoir sections show high permeability and high heterogeneity, which is the cause for premature breakthroughs of injected water to production wells. The reservoir stimulation technology using a single-component gelling solution was selected based on the results of laboratory studies in free volumes and flow experiments on heterogeneous highly permeable reservoir models using high-salinity formation and injected water. It was established that the flow resistance factor increased during injection of the agent solution up to 56,7, and the residual resistance factor was equal to 9,4. The maximum increase achieved in the displacement efficiency during flow experiments was 0,087. Pilot field tests conducted in three injection wells demonstrated high performance of the technology. The duration of the technological effect was 10-12 months, the average specific incremental recovery per calendar year was 2,177 tons/well job, the total incremental oil recovery for the entire observation period (13 months) was 41,5 thousand tons. Based on the results of well interventions, the tested polymer gelling solution was considered promising for further application.
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