Oilfield cleaner and corrosion inhibitor comprising a polyamine sulfonic acid salt

Patent metadata

Field	Value
Publication number	US-9303236-B2
Application number	US-201414321461-A
Country	US
Kind code	B2
Filing date	Jul 1, 2014
Priority date	Jul 2, 2013
Publication date	Apr 5, 2016
Grant date	Apr 5, 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 synergist selected from the group consisting of thioglycolic acid, 3,3′-dithiodipropionic acid, thiosulfate, thiourea, 2-mercaptoethanol, L-cysteine, tert-butyl mercaptan, and combinations thereof.

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 , further comprising a corrosion inhibitor component.

8. The composition of claim 7 , wherein the corrosion inhibitor component comprises 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.

9. The composition of claim 8 , wherein 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.

10. The composition of claim 7 , wherein the corrosion inhibitor component comprises 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.

11. The composition of claim 10 , wherein R 9 is benzyl, and X − is chloride.

12. The composition of claim 7 , wherein the corrosion inhibitor component comprises an ethoxylated amine.

13. The composition of claim 12 , wherein the ethoxylated amine is ethoxylated tallow amine.

14. A method of inhibiting corrosion at a surface and/or removing hydrocarbonaceous deposits from a surface, the method comprising adding a composition 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, the composition comprising a polyamine sulfonic acid salt component, and the fluid comprising natural gas or a liquid hydrocarbon.

15. The method of claim 14 , 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.

16. 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 synergist comprises 2-mercaptoethanol; and
the composition further comprises methanol; and
optionally comprises a corrosion inhibitor component comprising an imidazolinium salt, a pyridinium salt, and an ethoxylated alkyl amine.

17. The composition of claim 16 , 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.

18. The composition of claim 16 , 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. %, 2-mercaptoethanol is present in an amount of 1-20 wt. %, and methanol is present in an amount of 10-80 wt. %, based on the total weight of the composition.

19. The method of claim 14 , 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.

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

21. The method of claim 14 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.

22. The method of claim 14 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; and/or
the composition further comprises a corrosion inhibitor comprising:
(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.

Assignees

• Ecolab Usa Inc

Inventors

• Bennett Brian Michael
• Mancuso Sebastian Dennis

Classifications

• C11D3/2006 Primary

  Monohydric alcohols · CPC title

• C10L10/04

  for minimising corrosion or incrustation · CPC title

• C11D3/0073 Primary

  Anticorrosion compositions · CPC title

• C11D11/0041

  Chemistry & Metallurgy · mapped topic

• C11D3/3427

  containing thiol, mercapto or sulfide groups, e.g. thioethers or mercaptales · CPC title