Corrosion Inhibitor Compositions For Acidizing Treatments

Patent metadata

Field	Value
Publication number	US-2016177170-A1
Application number	US-201514968265-A
Country	US
Kind code	A1
Filing date	Dec 14, 2015
Priority date	Dec 22, 2014
Publication date	Jun 23, 2016
Grant date	—

Abstract

A corrosion inhibitor composition and a method of inhibiting corrosion on a surface are disclosed. The corrosion inhibitor composition includes at least one nitrogen containing heteroaromatic compound and at least one haloalkynyl carbamate compound. The corrosion inhibitor composition may be utilized with acidizing treatments for wells, in particular for the production of oil, gas, and/or water.

First claim

1 . A composition for inhibiting corrosion, the composition comprising at least one nitrogen containing heteroaromatic compound and at least one haloalkynyl carbamate compound.

2 . The composition according to claim 1 , wherein the at least one nitrogen containing heteroaromatic compound is a pyrrole, an imidazole, a pyrazole, a triazole, a tetrazole, a pyridine, a pyrazine, a pyrimidine, a pyridazine, an oxazine, a thiazine, a triazine, an azepine, a diazepine, an indole, a quinoline, a benzazepine, a carbazole, an acridine, a cinnoline, or a quinazoline

3 . The composition according to claim 1 , wherein the at least one nitrogen containing heteroaromatic compound is a pyridine.

4 . The composition according to claim 1 , wherein the at least one nitrogen containing compound is quaternized.

5 . The composition according to claim 1 , wherein the at least one nitrogen containing compound is substituted with a C 1-20 alkyl group.

6 . The composition according to claim 1 , wherein the at least one nitrogen containing heteroaromatic compound comprises at least one nitrogen ring atom, wherein the at least one nitrogen ring atom has a substituent group selected from the group consisting of an alkyl group, an alkenyl group, an aryl group, an arylalkyl group, an alkaryl group, a heteroaryl group, a heteroarylalkyl group, and an alkylheteroaryl group.

7 . The composition according to claim 6 , wherein the substituent group is an arylalkyl group comprising an aryl group containing from 5 to 9 carbon atoms and a C 1-5 alkyl group.

8 . The composition according to claim 1 , wherein the at least one haloalkynyl carbamate compound has the following structure:

wherein
R8 is a hydrogen, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, an arylalkyl group, an alkaryl group, a heteroaryl group, a heteroarylalkyl group, an alkylheteroaryl group, a cycloalkyl group, an aminoalkyl group, or a hydroxyalkyl group;
R9 is an alkylene group,
X is a halide; and
n is from 1 to 3.

9 . The composition according to claim 1 , wherein the at least one haloalkynyl carbamate compound is 3-iodo-2-propynyl butyl carbamate.

10 . The composition according to claim 1 , wherein the weight ratio of the at least one nitrogen containing heteroaromatic compound to the at least one haloalkynyl carbamate compound is from 1:100 to 100:1.

11 . The composition according to claim 1 , wherein the composition further comprises a surfactant.

12 . The composition according to claim 11 , wherein the surfactant is a nonionic surfactant, an amphoteric surfactant, or a combination thereof.

13 . The composition according to claim 11 wherein the surfactant is a polysorbate, a sorbitan, a sorbitan derivative, or a combination thereof.

14 . The composition according to claim 11 , wherein the surfactant is a C 1-20 alkyl substituted imidazoline.

15 . The composition according to claim 1 , wherein the composition further comprises an alkynol.

16 . The composition according to claim 15 , wherein the alkynol is 2,5-dimethyl-3-hexyne-2,5-diol, a butynol, or a combination thereof.

17 . The composition according to claim 1 , wherein the composition further comprises a weak base.

18 . The composition according to claim 1 , wherein the composition further comprises a quaternary phosphonium halide.

19 . The composition according to claim 1 , wherein the composition further comprises a biocide.

20 . The composition according to claim 1 , wherein the composition further comprises at least one solvent.

21 . The composition according to claim 20 , wherein the solvent comprises water, an organic solvent, or a combination thereof.

22 . The composition according to claim 21 , wherein the organic solvent comprises methanol, ethanol, propanol, isopropanol, butanol, isobutanol, pentanol, hexanol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, polyethylene glycol, polypropylene glycol, diethylene glycol monomethyl ether, ethylene glycol monobutyl ether, butyl diglycol ether, or a combination thereof.

23 . The composition according to claim 1 , wherein the at least one nitrogen containing heteroaromatic compound and the at least one haloalkynyl carbamate compound have a total active concentration of from about 5 wt. % to about 100 wt. %.

24 . A method of inhibiting corrosion on a surface, the method comprising contacting the surface with the composition according to claim 1 .

25 . The method according to claim 24 , wherein the surface is a steel surface.

26 . The method according to claim 24 , the method further comprising mixing the composition with an aqueous acidic solution.

27 . The method according to claim 26 , wherein the aqueous acidic solution comprises hydrochloric acid, hydrofluoric acid, acetic acid, citric acid, or a combination thereof.

28 . The method according to claim 24 , the method further comprising introducing the composition into an oil well, a gas well, or a water well.

Assignees

• Lonza Ag

Inventors

• Janak Kevin E
• Tannenbaum Sarah

Classifications

• C09K8/54 Primary

  Compositions for in situ inhibition of corrosion in boreholes or wells · CPC title

• C23F11/04

  in markedly acid liquids · CPC title

• C09K2208/32

  Anticorrosion additives · CPC title

• C23F11/128

  Esters of carboxylic acids · CPC title

• C23F11/149

  Heterocyclic compounds containing nitrogen as hetero atom · CPC title