Methods and Compositions for Inhibiting Metal Corrosion
AssigneeHalliburton Energy Services, Inc.
InventorsJuanita M. Cassidy, Keith A. Frost
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Abstract
Methods of inhibiting the corrosion of a metal surface contacted by an aqueous acid solution. The methods combine a corrosion inhibiting composition with the aqueous acid solution, wherein the corrosion inhibiting composition comprises a reaction product of an alpha,beta-unsaturated ketone with a primary or secondary amine. The metal surface is then contacted with the aqueous acid solution comprising the corrosion inhibiting composition, thereby inhibiting corrosion thereon.
Claims20
-20. (canceled)
A method of inhibiting the corrosion of a metal surface contacted by an aqueous acid solution comprising:
- (a) combining a corrosion inhibiting composition with the aqueous acid solution, the corrosion inhibiting composition consisting essentially of a reaction product of an alpha,beta-unsaturated ketone with a primary or secondary amine;
- and then
- (b) contacting the metal surface with the aqueous acid solution comprising the corrosion inhibiting composition.
A method comprising:
- introducing an aqueous acid solution comprising a corrosion inhibiting composition into at least a portion of a subterranean formation, wherein the corrosion inhibiting composition consists essentially of a reaction product of an alpha,beta-unsaturated ketone with a primary or secondary amine, and wherein the alpha,beta-unsaturated ketone comprises at least one ketone selected from the group consisting of:
- 4-phenyl-3-buten-2-one, 3-methyl-1-phenyl-2-buten-1-one, 4-phenyl-3-penten-2-one, 5-phenyl-4-penten-3-one, 6-phenyl-5-hexen-4-one, 7-phenyl-6-hepten-4-one-2-ol, 7-phenyl-6-hepten-4-one, 1,3-diphenyl-2-propen-1-one, 1,3-diphenyl-2-buten-1-one, dicinnamalacetone, 1,7-bis(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5-dione, mesityl oxide, phorone, isophorone, 3-methyl-2-cyclohexen-1-one, 3,6-dimethyl-2,6-cycloheptadien-1-one, 5-methyl-4-hexen-3-one, and a beta-hydroxy ketone which dehydrates to form an alpha,beta-unsaturated ketone under acidic conditions.
Dependencies are inferred from the claim text.