FIELD: oil and gas production industry. SUBSTANCE: this relates to isolation of absorption zones in drilling wells. Improved efficiency of isolation is achieved due to prevention of contact between plugging material and water at delivering material to bed. According to method, prior to introducing protopolymer of urethane line into well, injected preliminarily are polyhydric alcohols for example diethyleneglycol. EFFECT: higher efficiency. 1 tbl
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