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US 12,503,636 B2Granted
Corrosion inhibitor composition for wet sour crude
AssigneeKing Fahd University of Petroleum and Minerals
InventorIme Bassey Obot
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Abstract
A method of inhibiting sour corrosion of a metal surface including contacting the metal surface and composition in a corrosive medium. The corrosive medium includes hydrogen sulfide. The composition includes an aliphatic alcohol comprising 1 to 6 carbons, a polysorbate, a glycol compound, and a substituted benzimidazole compound. The composition includes a weight ratio of the substituted benzimidazole compound to the polysorbate of 1 to 3.
Claims19
A method of inhibiting sour corrosion of a metal surface, comprising:
- contacting the metal surface with a composition in the presence of a corrosive medium;
- wherein the corrosive medium comprises hydrogen sulfide;
- wherein the composition comprises:
- an aliphatic mono-alcohol comprising 1 to 6 carbons;
- a polysorbate;
- a glycol compound;
- and
- a substituted benzimidazole compound,
- wherein the composition comprises a weight ratio of the substituted benzimidazole compound to the polysorbate of 1 to 3,
- wherein the composition comprises 1-10 wt. % of the substituted benzimidazole compound, 3-30 wt. % of the polysorbate, 35-50 wt. % of the glycol compound, and 35-45 wt. % of the aliphatic mono-alcohol, based on the total weight of the composition.
7 more elements
Dependencies are inferred from the claim text.