FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil and gas industry, namely to isolation of brine water influx in well watered by water cone pulled to the bottom. Isolation method of brine water influx in well, watered by water cone pulled to the bottom, is characterised by drilling performed from the main shaft of the killed well in drowned part of productive formation of radial branches along the radius below well perforation interval. Pumped into the above radial branch insulation composition with creation of waterproof screen along the radius of the main borehole. Well is left for the period of reaction of injected composition under pressure and subsequent inflow through existing perforation holes of perforation interval.
EFFECT: technical result is increased radius and area of water shutoff screen and delay time of well watering.
1 cl, 6 dwg
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