FIELD: oil and gas industry.
SUBSTANCE: method of isolation of the water influxes to well comprises water isolation composition injection in the isolation zone, composition contains modified soluble glass, 3.6-10 or 1-3.5 parts by volume of ethyl acetate, and surface-active substance. At that in the water isolating composition 100 parts by volume of high-modulus soluble silicate with silica module 3.5-6 and density 1025-1200 kg/m3 is used as modified soluble silicate at temperatures exceeding 10°C. 0.2 parts by volume of detergent preparation with weight ratio of surface-active substances 30-38% and freezing temperature minus 30°C minimum are used as surface-active substance.
EFFECT: increased efficiency of water influx isolation and expansion of temperature range for the methods use.
2 cl, 2 ex, 2 tbl
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