«Proceedings of Gubkin University»

Increasing inhibition efficiency and studying technological properties of environmentally safe corrosion inhibitor for protecting oilfield equipment in mineralised aquatic environments

UDC: 620.197.3
DOI: -

Authors:

¹ National University of Oil and Gas “Gubkin University”, Moscow, Russian Federation

Keywords: corrosion inhibitor, surfactants, corrosion rate, inhibition efficiency, carbon dioxide corrosion, environmental safety, imidazoline derivatives, chemicals compatibility

Annotation:

The effectiveness of corrosion resistance determines the duration of safe and reliable use of equipment, and therefore the development and research of reagents to prevent corrosion remain in high demand. In addition to the effectiveness of the reagents used, priority attention is also paid to their environmental safety. The aim of this work is to develop and study the main characteristics of a corrosion inhibitor composition based on imidazoline derivatives for the protection of oilfield equipment in mineralized aqueous environments saturated with carbon dioxide. To increase the effectiveness of the protective effect of the inhibitor, studies were conducted on additives of surfactants and salts. It was found that surfactant additives do not enhance the protective effect of the inhibitor, and the best characteristics are achieved when adding ammonium carbonate to the composition at the concentration of 0,25 % by weight. As a result, a corrosion inhibitor is developed to protect oilfield equipment. This has high protective properties in a hydrocarbon-containing aqueous environment at an economical dosage (protective effect up to 85,9 % at an inhibitor concentration of 30 mg/l) and is characterized by compatibility with industrial demulsifiers, as well as improved environmental performance.

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