OIL RESERVOIR PRODUCTION METHOD Russian patent published in 2009 - IPC E21B43/22 

FIELD: oil-and-gas production.

SUBSTANCE: invention related to oil-and-gas production, particularly to oil fields treatment, also can be used for water flow in to oil wells isolation and for well water intake capacity regulation. Method includes pumping polymer composition into reservoir, which contains in wt % water-soluble anion polymer 0.01-5.0, at least one water-soluble acid, at least one silicon containing substance 1.0-8.0, at least one SAS 0.50-10.0, high dispersible water-repellent material 0.1-3.0, salt of polyvalent metal 0.003-0.30, the rest is water. For creating mentioned above composition dose in to the polymer water solution, at least one silicon containing substance, at least one SAS, WDGM and develop pH of reaction mass till 0.5-3.0 by adding at least one acid, then add salt of polyvalent metal. Invention develops in formula subclaime.

EFFECT: method of reservoir treatment efficiency increase because of rheological properties improvement also pumped in compositions of water-repellent and oil displacement properties improvement.

7 cl, 4 tbl, 4 ex