FIELD: chemistry.
SUBSTANCE: invention relates to chemistry of polymer compounds, specifically to inhibitors of hydrate formation, corrosion and salt deposition based on polyurethanes. Reagent of complex action – inhibitor of hydrate formation, corrosion and salt deposition based on polyurethanes of formula Ia, including isomers, Ib, including isomers, represents:
where
and where the sum of n, m, x and p is a number sufficient to obtain an average molecular weight of 4 kDa. Invention also relates to a composition capable of inhibiting formation of gas hydrates of a methane-propane mixture, inhibiting corrosion and salt deposition, consisting of a compound of formula Ib, including isomers and oxyethylidene diphosphonic acid HEDPA in weight ratio Ib: HEDPA=50:1.
EFFECT: wider range of oilfield reagents for said purpose by creating an inhibitor of hydrate formation, corrosion and salt deposition based on polyurethanes Ia (including isomers), Ib (including isomers), compositions Ib (including isomers) with HEDPA.
2 cl, 6 dwg, 7 ex
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