FIELD: oil and gas production.
SUBSTANCE: invention relates to compositions aimed to prevent deposition of inorganic salts in wells and on well equipment, oil collection and transportation system, as well as in oil strata developed involving watering systems. Salt deposition inhibiting composition contains, wt %: oxyethylenediphosphonic acid 16.0-18.03, sodium hydroxide 5.83-7.0, zinc oxide 5.42-7.12, ethylene glycol 25.0-40.0, sodium lignosulfate 4.17-5.0, and water - the balance. In another embodiment, inhibiting composition oxyethylenediphosphonic acid 5.0-8.0, sodium hydroxide 5.83-7.0, zinc oxide 5.42-7.12, ethylene glycol 25.0-40.0, sodium lignosulfate 4.17-5.0, nitrilotrimethylphosphonic acid 6.67-9.0, and water - the balance.
EFFECT: achieved high-efficiency versatile protection effect, lack of corrosion activity, and lowered freezing temperature enabling us of composition cold climatic regions.
2 cl, 6 tbl
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