FIELD: chemistry.
SUBSTANCE: group of inventions relates to inhibition of salt deposits in an oil-bearing formation and on field equipment. Composition for inhibiting the formation of salt deposits of an oil-bearing formation based on water contains the following, wt. %: 3-aminopropyltriethoxysilane 1-10; sodium lignosulphonate 0.1-5; salt formation inhibitor 0.1-5; water to 98.8. Salt formation inhibitor used is at least one substance selected from the group: oxyethylidene diphosphonic acid, tetrasodium salt of oxyethylidene diphosphonic acid, zinc complex of disodium salt of oxyethylidene diphosphonic acid. Method of inhibiting the formation of salt deposits of an oil-bearing formation involves feeding the above composition to the bottom-hole zone of the formation for inhibiting formation of salt deposits of the oil-bearing formation.
EFFECT: high efficiency of inhibiting salt deposition due to prolonged release of the inhibitor.
12 cl, 1 dwg, 30 ex
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