METHOD OF PRODUCING CORROSION INHIBITOR FOR OIL-FIELD ENVIRONMENTS AND CORROSION INHIBITOR Russian patent published in 2016 - IPC C23F11/14 

FIELD: oil industry.

SUBSTANCE: invention relates to protection of oil field equipment from corrosion, including hydrogen sulphide and carbon dioxide, and can be used in oil and gas production industry. Method comprises forming an active base corrosion inhibitor by reacting an alkyl phenol with number of carbon atoms in alkyl group of 15–18, a formaldehyde and a secondary amine of product in a solvent based on aromatic hydrocarbons at a temperature of 100–140 °C for 5–16 hours and resulting dissolution of active principle in a solvent. Corrosion inhibitor includes an active base, produced as described above, in amount of 30–50 wt% and solvent – balance.

EFFECT: technical result is use of affordable, commercially available materials and receive effective inhibitor against hydrogen sulphide and carbon dioxide corrosion.

2 cl, 2 tbl, 18 ex