METHOD FOR ISOLATING BED WATERS INFLUX IN WELLS Russian patent published in 2005 - IPC

FIELD: oil industry.

SUBSTANCE: method includes pumping silicon-containing substance with high-dispersion hydrophobic substance, as silicon-containing substance silicon-organic substance or mixture thereof is used, or silicon-organic substance with following ratio of components in percents of mass: silicon-containing substance 98.0-99.9, high-dispersion hydrophobic material 0.1-2.0. pumped mixture of silicon-containing substance with hydrophobic material is diluted with diluter, while silicon-containing substance having no chlorine is diluted, using as diluter 0.6-6.0 percents of mass of hydrochloric acid solution on mineralized water of chlorine-calcium type; and silicon-containing substance having chlorine is diluted using mineralized chlorine-calcium type water without addition of acid while 1 portion of silicon-containing substance with hydrophobic material is used in conjunction with 0.5-2 portions of diluter. When using mixture of silicon non-organic substance with hydrophobic material, argillaceous suspension is pumped with density 1.1-1.2 g/sm³ as filler and gel-forming controller. As oil-displacing component surfactant is pumped in amount 0.5-5.0 percents of mass, and as surfactant several special substances can be used. After pumping silicon-containing substance together with hydrophobic material separator is pumped - hydrocarbon solvent, for example, stable benzine, or hexane fraction, or diesel fuel, and then diluter.

EFFECT: higher efficiency.

9 cl, 12 ex, 3 tbl