Oilfield cleaner and corrosion inhibitor comprising a polyamine sulfonic acid salt

Patent metadata

Field	Value
Publication number	US-9434911-B2
Application number	US-201615056355-A
Country	US
Kind code	B2
Filing date	Feb 29, 2016
Priority date	Jul 2, 2013
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

Disclosed herein are cleaner/corrosion inhibiting compositions useful in applications relating to the production, transportation, storage, and separation of crude oil and natural gas. Also disclosed herein are methods of using the compositions as cleaners/corrosion inhibitors, particularly in applications relating to the production, transportation, storage, and separation of crude oil and natural gas.

First claim

What is claimed is:

1. A composition for inhibiting corrosion and/or removing hydrocarbonaceous deposits in oil and gas applications, the composition comprising a polyamine sulfonic acid salt component and a corrosion inhibitor selected from the group consisting of:
(A) an imidazoline of Formula (I) or an imidazolinium salt of Formula (II):

wherein
R 10 is a C 1 -C 20 alkyl or a C 1 -C 20 alkoxyalkyl group;
R 12 and R 13 are independently a C 1 -C 6 alkyl group or hydrogen,
R 11 and R 14 are independently hydrogen, C 1 -C 6 alkyl, C 1 -C 6 hydroxyalkyl, or C 1 -C 6 arylalkyl; and
X − is halide, chloride, bromide, iodide, carbonate, sulfonate, phosphate, or an anion of an organic carboxylic acid;
or a tautomer thereof;
(B) a compound of Formula (III):

wherein
R 9 is an alkyl group, an aryl group, or an arylalkyl group, wherein said alkyl groups have from 1 to about 18 carbon atom; and
X − is chloride, bromide, or iodide; or
(C) an ethoxylated amine.

2. The composition of claim 1 wherein the polyamine sulfonic acid salt component is formed by reaction of a polyamine component with a sulfonic acid component.

3. The composition of claim 2 , wherein the polyamine component comprises a polyalkylene polyamine, wherein the polyalkylene polyamine comprises a polyethylene polyamine, a polypropylene polyamine, a polybutylene polyamine, or a combination thereof.

4. The composition of claim 3 , wherein the polyamine component comprises a mixture of tetraethylenepentamine (TEPA), pentaethylenehexamine (PEHA), and hexaethyleneheptamine (HEHA).

5. The composition of claim 2 , wherein the sulfonic acid component is selected from the group consisting of an aryl sulfonic acid, an alkyl sulfonic acid, an arylalkyl sulfonic acid, and a combination thereof.

6. The composition of claim 1 , wherein the polyamine sulfonic acid salt component comprises a salt selected from the group consisting of:
a tetraethylenepentamine dodecylbenzenesulfonic acid salt;
a pentaethylenehexamine dodecylbenzenesulfonic acid salt;
a hexaethyleneheptamine dodecylbenzenesulfonic acid salt;
and a combination thereof.

7. The composition of claim 1 , wherein the corrosion inhibitor comprises the imidazoline of Formula (I) or the imidazolinium salt of Formula (II), R 10 is an alkyl mixture typical in tall oil fatty acid (TOFA), R 11 is benzyl, R 12 and R 13 are each hydrogen, R 14 is hydroxyethyl, and X − is chloride.

8. The composition of claim 1 , wherein the corrosion inhibitor comprises the compound of Formula (III), R 9 is benzyl, and X − is chloride.

9. The composition of claim 1 , wherein the corrosion inhibitor comprises the ethoxylated amine, and the ethoxylated amine is ethoxylated tallow amine.

10. The composition of claim 1 wherein the polyamine sulfonic acid salt component comprises at least one salt selected from a tetraethylenepentamine dodecylbenzenesulfonic acid salt, a pentaethylenehexamine dodecylbenzenesulfonic acid salt, and a hexaethyleneheptamine dodecylbenzenesulfonic acid salt;
the corrosion inhibitor comprises an imidazolinium salt, a pyridinium salt, or an ethoxylated alkyl amine; and
the composition further comprises methanol.

11. The composition of claim 10 , wherein the polyamine sulfonic acid salt component comprises a mixture of a tetraethylenepentamine dodecylbenzenesulfonic acid salt, a pentaethylenehexamine dodecylbenzenesulfonic acid salt, and a hexaethyleneheptamine dodecylbenzenesulfonic acid salt.

12. The composition of claim 10 , wherein the polyamine sulfonic acid salt component is present in an amount of 10-70 wt. %, the corrosion inhibitor component is present in an amount of 5-50 wt. %, and methanol is present in an amount of 10-80 wt. %, based on the total weight of the composition.

13. A method of inhibiting corrosion at a surface and/or removing hydrocarbonaceous deposits from a surface, the method comprising adding the composition of claim 1 to a fluid which contacts a surface of a wellbore or equipment used in production, processing, transportation, storage or separation of the fluid to inhibit corrosion and/or remove hydrocarbonaceous deposits from the surface, and the fluid comprising natural gas or a liquid hydrocarbon.

14. The method of claim 13 wherein the equipment comprises a pipeline, a storage vessel, downhole injection tubing, a flow line, or an injection line.

15. The method of claim 13 wherein the liquid hydrocarbon comprises crude oil, heavy oil, processed residual oil, bituminous oil, coker oil, gas oil, fluid catalytic cracker feed or slurry, naphtha, diesel fuel, fuel oil, jet fuel, gasoline, or kerosene.

16. The method of claim 13 wherein the polyamine sulfonic acid salt component comprises a salt selected from the group consisting of:
a tetraethylenepentamine dodecylbenzenesulfonic acid salt;
a pentaethylenehexamine dodecylbenzenesulfonic acid salt;
a hexaethyleneheptamine dodecylbenzenesulfonic acid salt;
and a combination thereof.

17. The method of claim 13 , wherein an effective amount of the composition is provided at the surface when the composition provides at least 95% protection after 12 hours for a 1018 carbon steel working electrode in a bubble test, wherein the bubble test is characterized by:
(a) a testing temperature of about 60° C.;
(b) a carbon dioxide saturated liquid medium of 10% field crude oil and 90% synthetic brine; and
(c) an inhibitor dosage of 20 ppm of the composition based on total fluids.

18. The method of claim 13 , wherein an effective amount of the composition is provided at the surface when the composition provides greater than or equal to 40% schmoo removal in a Dynamic Schmoo Removal Loop (“DSRL”) test conducted at a dosage of 500 or 1,000 ppm of the composition in brine at 122° F.

19. A method of inhibiting corrosion at a surface and/or removing hydrocarbonaceous deposits from a surface, the method comprising adding the composition of claim 10 to a fluid which contacts a surface of a wellbore or equipment used in production, processing, transportation, storage or separation of the fluid to inhibit corrosion and/or remove hydrocarbonaceous deposits from the surface, and the fluid comprising natural gas or a liquid hydrocarbon.

20. The method of claim 19 wherein the equipment comprises a pipeline, a storage vessel, downhole injection tubing, a flow line, or an injection line; and the liquid hydrocarbon comprises crude oil, heavy oil, processed residual oil, bituminous oil, coker oil, gas oil, fluid catalytic cracker feed or slurry, naphtha, diesel fuel, fuel oil, jet fuel, gasoline, or kerosene.

Assignees

• Ecolab Usa Inc

Inventors

• Bennett Brian Michael
• Mancuso Sebastian Dennis

Classifications

• C11D3/2006 Primary

  Monohydric alcohols · CPC title

• C09K2208/32

  Anticorrosion additives · CPC title

• C10G75/02

  by addition of corrosion inhibitors · CPC title

• C11D3/349

  additionally containing nitrogen atoms, e.g. nitro, nitroso, amino, imino, nitrilo, nitrile groups containing compounds or their derivatives or thio urea · CPC title

• C11D3/28

  Heterocyclic compounds containing nitrogen in the ring · CPC title