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US 2025/0188618 A1Published application
Amino acid derivatives and sulfur derivatives as biodegradable corrosion inhibitors
AssigneeChampionX LLC
InventorsChristopher Steven Popeney, Izabela Anita Owsik
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Abstract
Environmentally friendly corrosion-inhibiting compositions and methods of use thereof for corrosion inhibition of metal surfaces used in oil and gas operations are disclosed. Corrosion-inhibiting compositions include derivatized succinate corrosion inhibitors that beneficially avert bioaccumulation according to certain regulations and provides suitable biodegradability.
Claims21
A method of reducing corrosion on a surface comprising:
- contacting a corrosive inhibiting effective amount of a corrosion inhibition composition comprising a derivatized succinate corrosion inhibitor with a metal surface in a system, wherein the contacting is added in a batch or continuous application, and
- reducing corrosion on the surface, wherein the derivatized succinate corrosion inhibitor has the following general structure or salts thereof:
- wherein R1 and R2 are independently H or a carbon-containing group, and Z is a nitrogen or sulfur-containing group.
(canceled)
(canceled)
A treated metal containment or water source comprising:
- a metal containment comprising a metal surface a water source comprising one or more corrodents;
- and
- a corrosive inhibiting effective amount a derivatized succinate corrosion inhibitor having the following general structure or salts thereof:
- wherein R1 and R2 are independently H or a carbon-containing group, and Z is a nitrogen or sulfur-containing group, wherein the metal containment comprising the metal surface has a barrier or film substantially coating the metal surface with the derivatized succinate corrosion inhibitor.
1 more element
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A method of making a derivatized succinate corrosion inhibitor comprising:
- reacting maleic anhydride with an alcohol to form a maleic ester acid intermediate, and thereafter reacting the maleic ester acid intermediate or maleic acid with an amine or a sulfur containing compound by addition to form the derivatized succinate corrosion inhibitor having the general structure (or salt thereof)
- wherein one of R1 or R2 is H and the other R group is a carbon-containing group, or wherein both of R1 or R2 are H and Z is —NHR3, N(R3)2, or SR3, wherein R3 is a carbon containing group, and Z is a nitrogen or sulfur-containing group.
20-25. (canceled)
Dependencies are inferred from the claim text.