FIELD: oil and gas production. SUBSTANCE: composition contains 65-90% of product obtained by reaction of monoethanolamine with formaldehyde, 0.1-1.0% of sodium or potassium hydroxide, and tertiary aminoalcohol, in particular triethanolamine, and/or aliphatic C2-C4-alcohol, monoethanolamine interacting with 37% formaldehyde solution at molar ratio 1:(1.8-3.5), preferably 1: (2.1-3.0), respectively. EFFECT: lowered congelation temperature and stabilized reactivity. 3 cl, 4 tbl, 8 ex
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