Oilfield and refinery corrosion inhibitors — acetylenic and pyridinium acidizing inhibitors, neutralizing amines, anodic salts, and yellow-metal azoles — for tubulars, pipelines, and process systems.
Oilfield corrosion inhibitors are chemistries that slow the electrochemical attack on carbon steel and yellow metals across drilling, production, transport, and refining. They split into a few working classes: acidizing inhibitors that protect tubulars during acid stimulation, neutralizing amines that raise condensate pH, anodic salts that passivate metal in closed or packer fluids, and azoles that protect copper alloys. Most programs combine classes, because no single inhibitor covers acidizing, sweet/sour production, and utility water at once.
Propargyl alcohol and alkyl-pyridine inhibitors are dosed into acid stimulation fluids, where they form a protective film that limits HCl attack on tubulars at temperature. Anodic inhibitors such as sodium nitrite and sodium molybdate work differently: they passivate steel only above a threshold concentration. That threshold is the real trade-off. Underdosing an anodic inhibitor can concentrate attack into localized pitting that is worse than no inhibitor at all, so dose control and monitoring matter more here than with film-formers.
Cyclohexylamine is a neutralizing amine for refinery overhead and condensate, where it raises pH to limit acid condensation on steel. Benzotriazole and tolyltriazole protect copper, brass, and bronze in utility and closed-loop water, but neither protects bare steel. Specify a neutralizing amine and a passivating salt for ferrous metal, and add an azole only where yellow-metal components are in contact. Confirm regulatory status for your application and jurisdiction.
We use cookies and similar technologies for analytics and to improve our Site, and — with your consent — for marketing and B2B visitor identification. Choose what to allow. See our Privacy Policy.