THICKENER OF AN AQUEOUS ACID SOLUTION, A METHOD OF THICKENING AN AQUEOUS ACID SOLUTION AND AN OIL RECOVERY METHOD USING SAID THICKENER, A SET OF COMPONENTS FOR THICKENING AN AQUEOUS ACID SOLUTION AND A COMPOSITION FOR CARRYING OUT ACIDIC HYDRAULIC FRACTURING OF THE FORMATION, INCLUDING SAID THICKENER

摘要

The invention relates to a chemical system for thickening aqueous solutions of inorganic acids. The proposed system comprises: a) a polyethoxylated tallow amine of the formula (I) where m and n = 2; and R represents a fatty acid residue, selected from the group consisting of oleic, palmitic, stearic, myristic, or linoleic acid; b) a compound, selected from the group consisting of: - quaternary ammonium salt of the formula (Ila) or - zwitterionic compound of the formula lib, and c) optionally, an iron converter. Possible embodiments of the proposed chemical system are also disclosed.