METHOD OF ISOLATION OF THE WATER INFLUX IN THE HOLE Russian patent published in 2008 - IPC E21B33/138 

FIELD: oil and gas industry.

SUBSTANCE: invention is referred to a petroleum industry and can be applied at repair of holes from water inflow by abandonment of leakage of production strings and annulus room. Technical result - reception of high and durable insulating effect during repairing works of holes from water inflow. In a method of isolation of a water influx in a hole at the leakage of production strings including an injection in a leakage zone grouting mixture, containing formaldehyde resin and a hardener-acid with a preliminary purification of this zone by an injection of the pointed acid. The grouting mixture contains complementary hydrolytic gypsum. And an injection of the pointed acid and grouting mixtures hold in a continuum mode at stress, above breakdown pressure of this formation, with the subsequent hardening of grouting mixtures without a decompression. The invention is developed in dependent posts.

EFFECT: reliability increase of isolation at repairing works of holes from water inflow.

3 cl, 2 tbl