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US 10,240,240 B2Granted
Environmentally friendly corrosion inhibitors for high temperature applications
AssigneeHalliburton Energy Services, Inc.
InventorsSushant Dattaram Wadekar, Vandana Neeraj Pandey, Gulam Jahangeer Hipparge
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Abstract
Methods of inhibiting corrosion of metal surfaces by aqueous acids are described. The methods include combining an effective amount of a corrosion inhibitor composition with an aqueous acid solution to form an inhibited acid solution and contacting a metal surface with the inhibited acid solution. The corrosion inhibitor composition includes an aromatic ketone or a salt thereof.
Claims16
A method of inhibiting corrosion of metal surfaces by aqueous acids comprising:
- combining an effective amount of a corrosion inhibitor composition with an aqueous acid solution to form an inhibited acid solution, the corrosion inhibitor composition consisting of:
- (i) an aromatic ketone or a salt thereof having the structure:
- wherein R1 is an aromatic ring substituted at one or both meta positions with an alkyl group having 1-12 carbons and R2 is a cyclic alkane substituted with at least one amine group in or on the cyclic alkane,
- (ii) formaldehyde,
- (iii) cinnamaldehyde,
- (iv) methanol, and
- (v) formic acid;
- and
- contacting a metal surface with the inhibited acid solution.
6 more elements
Dependencies are inferred from the claim text.