FIELD: oil production, particularly to prevent mineral salt deposits during oil production.
SUBSTANCE: method involves serially injecting inhibiting composition including organophosphorus composition, hydrochloric acid and water, as well as alkali soul ion and hydrophilic displacement fluid, in bottom zone. The alkali is all-purpose oil-production reagent. Solvent is injected in well before inhibiting composition injection. Inhibiting composition includes hydrofluoric acid. The inhibiting composition includes organophosphorus composition in amount of 1-15% by weight, hydrochloric acid in amount of 6-23% of HCl by weight and hydrofluoric acid in amount of 0.1-5% by weight, remainder is water.
EFFECT: improved adsorption and desorption inhibitor characteristics and degree of field service lines protection against salt deposits.
1 ex, 3 tbl
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