FIELD: oil production industry. SUBSTANCE: it can be used for isolation of water inflows to producing wells. According to method, oil beds are subjected to interval-by-interval salt-acid treatment. Oil emulsion is injected into oil beds. Watered bed and oil beds are separated. Acid solution is injected into watered bed, then injected into watered bed is acid-resistant plugging material under pressure which is 10-20% higher than acid solution injection pressure. Cycles of injecting "acid solution - acid-resistant plugging material" are repeated with gradual increase of acid solution injecting pressure up to pressure of injecting acid-resistant plugging material. Then watered bed and oil beds are interconnected. EFFECT: high efficiency.
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