DEVELOPMENT METHOD OF NON-HOMOGENEOUS OIL FORMATION Russian patent published in 2011 - IPC E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: method involves pumping to the formation via injection wells of compound in the form of disperse polymer system at required concentration. Injection wells are pre-selected; they are interconnected with one comb of group pumping station (GPS). On mixing plant there prepared is disperse polymer system with concentration of components in water for each, which is determined by the formula. Disperse polymer system prepared at the plant is dosed to water flowing from GPS comb to chosen wells; and pumping of polymer system to them is performed in necessary concentration simultaneously or in series with shutting-in of well after completion of planned pumping volume and decrease of injection capacity by not less than 10% of initial one.

EFFECT: improving efficiency of the method owing to possible effective control of formation permeability, improving the processibility and reducing material and energy costs.

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