THICKENER OF AQUEOUS SOLUTION OF ACID AND / OR SALT, METHOD OF THICKENING AQUEOUS SOLUTION OF ACID AND / OR SALT AND METHOD OF OIL PRODUCTION USING SAID THICKENER, SET OF COMPONENTS FOR THICKENING OF AQUEOUS SOLUTION OF ACID AND / OR SALT AND COMPOSITION FOR IMPLEMENTATION OF ACID HYDRAULIC FRACTURING OF FORMATION, INCLUDING SAID THICKENER Russian patent published in 2020 - IPC C09K8/35 C09K8/74 E21B43/267 E21B43/27 

FIELD: chemistry.

SUBSTANCE: invention relates to thickening of aqueous solutions of acids and salts and use of thickened solution for hydraulic fracturing of the formation. Use of the combination: a) a zwitterion compound of formula I

,

where R is a saturated, mono-, di- or tri-unsaturated hydrocarbon radical C₉-C₂₅; R₁ represents -COO^- or -CH₂COO^-; R₂, R₃, R₄, R₅ independently represent hydrogen, methyl, ethyl, propyl, isopropyl, allyl, vinyl, phenyl or benzyl; b) a compound selected from a group consisting of diethanolamides of C₁₀-C₂₀ fatty acids, alkyl dimethylamine oxide, hydroxyethyl alkyl imidazole, butyl glycol, cinnamaldehyde and oxycinnamates; and c) optionally, an iron converter for thickening the aqueous solution of the acid and / or salt.

EFFECT: high efficiency of proppant transfer over a long period of time, high efficiency of extracting hydrocarbons from the formation.

25 cl, 8 dwg, 9 tbl