Selection of corrosion inhibitors for the protection of oil production equipment

Corrosion Prevention Approach for gas and oil Refinery Tanks

“…The most important tasks in the development of an oilfield are reliable operation and long life of equipment. The presence of corrosive components in transported fluids negatively affects metal in oil production, refinery, transportation and processing operations [15] One of the efficient methods of protection is the use of inhibitors that adsorb as protective films on a metal to prevent its corrosion. At the same time, inhibitor protection seems to be one of the most appropriate and cost-efficient ways to address this problem [15].…”

“…Various corrosion inhibitors have long been used successfully for the protection of steel equipment and pipelines in oil production, refinement, transportation and processing [15]. Prominent among them are nitrogen-containing compounds with a diphilic structure, i.e.…”

“…Because of their inherent hydrophilic protonated amino and imino groups or a quaternary (charged) nitrogen atom, they can firmly adsorb on the negatively charged steel surface, while a hydrophobic substituent e.g. alkyl chains composed of 12 or more carbon atoms orientates the inhibitor during adsorption to form a polymolecular barrier layer that reliably screens the metal from the corrosive medium [15].…”

In Situ Synthesis of 2-Phenylbenzimidazole as an Hydrogen Sulfide Corrosion Inhibitor of Carbon Steel

“…inhibitor is a standard practice in oil and gas production systems to control internal corrosion of carbon steel structures because it is cost-effective and fl exible. 3,6,9,15 A wide variety of organic compounds has been tested as hydrogen sulfi de corrosion inhibitors. 9 Among these compounds nitrogen-based organic inhibitors such as imidazolines or their salts have been used successfully in these applications even without an understanding of the inhibition mechanism.…”

“…[4][5] So, H 2 S corrosion is one of the main factors of the corrosive destruction observed in steel equipment and pipelines that has been investigated for many years. 1,[3][4][5][6][7] The internal corrosion of carbon steel pipeline in the presence of carbon dioxide and hydrogen sulfide was recognized first in the 1940s and has been investigated for more than 60 years. 8 During oil-producing operations, an intense growth of sulfate-reducing bacteria (SRB), which generate H 2 S, takes place as a result of an injection of surface water into petroleum reservoirs.…”