Corrosion inhibition package

Patent metadata

Field	Value
Publication number	US-11725288-B2
Application number	US-201916722369-A
Country	US
Kind code	B2
Filing date	Dec 20, 2019
Priority date	Dec 20, 2018
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

An inhibition corrosion package for use with an acidic composition, where the package comprises a dialdehyde-containing hydrocarbon component; at least one surfactant; optionally, a propargyl alcohol or derivative thereof; and a solvent. Also disclosed are acidic compositions combining the corrosion inhibition package according to a preferred embodiment of the present invention for use in various industrial operations including but not limited to oil and gas operations. Also disclosed are methods of use of such compositions.

First claim

The invention claimed is:

1. A corrosion inhibition package for use with an aqueous acid composition, said corrosion inhibition package consisting of:
a dialdehyde-containing hydrocarbon component selected from the group consisting of: glutaraldehyde; succinaldehyde; malondialdehyde; adipaldehyde; heptanedial; nonanedial; undecanedial; 2,9-diethyldecanedial; and dodecanedial;
a solvent selected from the group consisting of: isopropanol; methanol; ethanol; 2-butoxyethanol; diethylene glycol; di-n-hexyl-ether; and combinations thereof;
an amphoteric surfactant selected from the group consisting of: a sultaine surfactant; a betaine surfactant; and combinations thereof,
an anionic surfactant; and a propargyl alcohol.

2. The corrosion inhibition package as claimed in claim 1 , wherein the sultaine surfactant is an amino sultaine surfactant, the betaine surfactant is an amino betaine surfactant, or a combination thereof.

3. The corrosion inhibition package as claimed in claim 1 , wherein the betaine surfactant is an amido betaine surfactant comprising a hydrophobic tail from C 8 to C 16 .

4. The corrosion inhibition package as claimed in claim 1 , wherein the betaine surfactant is cocamidobetaine.

5. The corrosion inhibition package as claimed in claim 1 , wherein the anionic surfactant is a carboxylic surfactant.

6. The corrosion inhibition package as claimed in claim 1 , wherein the anionic surfactant is an iminodicarboxylate.

7. The corrosion inhibition package as claimed in claim 1 , wherein the anionic surfactant is sodium lauriminodipropionate.

8. The corrosion inhibition package as claimed in claim 1 , wherein the betaine surfactant is cocamidopropyl betaine, the anionic surfactant is β alanine, N-(2-carboxyethyl)-N-dodecyl-, sodium salt (1:1), or a combination thereof.

9. The corrosion inhibition package as claimed in claim 1 , wherein the dialdehyde-containing hydrocarbon is present in an amount ranging from 2% to 25% by volume of the total volume of the corrosion inhibition package.

10. The corrosion inhibition package as claimed in claim 1 , wherein the amphoteric surfactant and the anionic surfactant are present in a total amount ranging from 2% to 20% by volume of the total volume of the corrosion inhibition package.

11. An aqueous liquid acidic composition consisting of:
an acidic solution; and
a corrosion package consisting of:
a dialdehyde-containing hydrocarbon component selected from the group consisting of: glutaraldehyde; succinaldehyde; malondialdehyde; adipaldehyde; heptanedial; nonanedial; undecanedial; and dodecanedial;
a solvent selected from the group consisting of: isopropanol; methanol; ethanol; 2-butoxyethanol; diethylene glycol; di-n-hexyl-ether; and combinations thereof;
an amphoteric surfactant is selected from the group consisting of: a sultaine surfactant; a betaine surfactant; and combinations thereof;
an anionic surfactant; and
a propargyl alcohol;

wherein the volume % of the corrosion package in the acidic composition ranges from 0.1 to 10%.

12. The composition according to claim 11 , wherein said acidic solution comprises an acid selected from the group consisting of: mineral acids; organic acids, synthetic acids; modified acids; complexed acids and combinations thereof.

13. The composition according to claim 11 , wherein the acidic solution comprises an acid selected from the group consisting of: HCl; amino acid-HCl; urea-HCl; alkanolamine-HCl; hydrofluoric acid; sulfuric acid; toluenesulfonic acid; methanesulfonic acid; and phosphoric acid.

14. The composition according to claim 13 , wherein the amino acid-HCl is lysine-HCl.

15. The composition according to claim 13 , wherein the alkanolamine-HCl is MEA-HCl.

16. A method of minimizing pitting corrosion at temperatures above 130° C., wherein said method comprises:
providing an acidic fluid;
providing a composition consisting of:
a dialdehyde-containing hydrocarbon component selected from the group consisting of: glutaraldehyde; succinaldehyde; malondialdehyde; adipaldehyde; heptanedial; nonanedial; undecanedial; and dodecanedial,
a solvent selected from the group consisting of: isopropanol; methanol; ethanol; 2-butoxyethanol; diethylene glycol; di-n-hexyl-ether, and combinations thereof;
an amphoteric surfactant is selected from the group consisting of: a sultaine surfactant; a betaine surfactant; and combinations thereof, and
an anionic surfactant;

combining said acidic fluid with said composition to obtain a mixed fluid;
exposing said mixed fluid to a metallic surface at a temperature of at least 130° C.; and
allowing said mixed fluid sufficient time of exposure to the metallic surface of a metal to minimize the pitting corrosion.

Assignees

• Fluid Energy Group Ltd
• Dorf Ketal Chemicals Fze

Inventors

• Purdy Clay
• Weissenberger Markus

Classifications

• C23F11/122 Primary

  Alcohols; Aldehydes; Ketones · CPC title

• C23F11/04

  in markedly acid liquids · CPC title

• C09K8/035 Primary

  Organic additives · CPC title

• C09K8/74

  combined with additives added for specific purposes · CPC title

• C09K8/52

  Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning · CPC title