Improved Oil Recovery from the Watered Productive Strata in the Carbonate Reservoirs

The zones having poor reservoir properties remain unrecovered in flooding of the carbonate producing formations characterized by presente of many fractures in combination with low-permeability matrix. To solve the problem the technology for the treatment of the oil- and water-saturated reservoirs based on an increase of filtration resistance of the high-permeability watered reservoir zones using the polymer-dispersion systems (PDS) consisting of water-soluble polymers, dispersion rock particles and modifying additives has been developed.