FIELD: oil industry.
SUBSTANCE: invention relates to the oil industry and can be used for repair and insulation operations in a well. Method comprises preparation and injection of an insulating composition into a well, containing 25.0 to 60.0 wt% of acetone formaldehyde resin and 15.0-25.0 wt% of a 10% sodium hydroxide solution. Insulating composition further comprises 25.0-50.0 wt% of saponified wood resin. First, acetone formaldehyde and saponified wood resin are mixed, then, after adding 10% sodium hydroxide solution, they are re-mixed.
EFFECT: technical result is increased efficiency of repair and insulation operations, expended technological possibilities of its application due to increased time of structuring of the insulating composition, its high filterability and preservation of oil permeability.
1 cl, 3 ex, 1 tbl
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