FIELD: oil production industry. SUBSTANCE: compound can be used for treatment of down-hole zone of carbonate reservoir in oil producing wells. In addition to muriatic acid, also contained is aluminium chloride which emits additional amount of muriatic acid in water-saturated pores of reservoir during hydrolysis. Subsequently, aluminium chloride creates gel of aluminium hydroxide in water-saturated pores of carbonate reservoir which prevents inflow of water to producing well. EFFECT: high efficiency.
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