FIELD: oil producing industry; applicable in process of oil production for supply of reagents to wells. SUBSTANCE: method includes loading of reagent into container and supply of it by portions into water-oil medium. Densities of oil and water phases withdrawn from well are determined preliminarily. Prior to loading into container, water-soluble reagent is mixed with fresh water to attain density corresponding to value between density of oil phase and that of water phase. Reagent is supplied by portions through annular space to surface of water layer in well. EFFECT: increased efficiency of reagent utilization due to provision of optimal contact of reagent with well products. 1 dwg
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