New Composition for Water Shut-off in Heterogeneous Reservoirs

The article presents the results of the effect of the sediment-forming composition on the heterogeneous reservoirs with high water-cut, which are at the last stage of development and contain large amounts of residual oil in the pores. The applied new composition, when interacting with stratal waters, as a result of coagulation and flocculation phenomena, forms stable sediments in the formation. These sediments, even at high pressures, retain their stability, penetrating into the pores of flooded formations (ie, they are not washed out of the pores). As a result, after the injection of the working agent, the coverage of low-permeable zones containing residual oil improves. And this allows you to increase the rate of displacement of oil using working agent. (C) 2019 "OilGasScientificResearchProject" Institute. All rights reserved.