Composition and method for reducing hydrate agglomeration

Patent metadata

Field	Value
Publication number	US-9458373-B2
Application number	US-201314098139-A
Country	US
Kind code	B2
Filing date	Dec 5, 2013
Priority date	Dec 16, 2010
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

Compositions and methods of inhibiting the formation of hydrate agglomerates in fluids including water, gas, and optionally liquid hydrocarbons are disclosed. The compositions may include counterions, such as halides or carboxylates. The compositions may also include a thermodynamic hydrate inhibitor, a kinetic hydrate inhibitor, an additional anti-agglomerant, an asphaltene inhibitor, a paraffin inhibitor, a corrosion inhibitor, a scale inhibitor, an emulsifier, a water clarifier, a dispersant, an emulsion breaker, and combinations thereof.

First claim

The claimed invention is:

1. A composition comprising the following formula:

wherein R 1 is C 1 -C 10 alkyl or benzyl;
wherein R 2 is C 1 -C 10 alkyl, benzyl, or H;
wherein R 3 is C 1 -C 10 alkyl, benzyl, or H; and
wherein R 4 is C 4 -C 22 alkyl or alkenyl.

2. The composition of claim 1 , wherein each alkyl is independently selected from the group consisting of: a straight chain alkyl, a branched chain alkyl, a cyclic alkyl, and combinations thereof.

3. The composition of claim 1 , wherein the alkyl for each of R 1 , R 2 , and R 3 is independently selected from the group consisting of methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, and combinations thereof.

4. The composition of claim 1 , wherein the alkyl for R 4 is selected from the group consisting of butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, and combinations thereof.

5. The composition of claim 1 , wherein the terminal nitrogen is further substituted with R 1 , and forms an ammonium ion, the composition further comprising a counterion X − as shown in the general formula below

6. The composition of claim 5 , wherein the counterion is a halide or a carboxylate.

7. The composition of claim 5 , comprising at least one or any combination of the following formulas (1) and (2), and optionally salts thereof:

8. The composition of claim 1 , further comprising at least one component selected from the group consisting of a thermodynamic hydrate inhibitor, a kinetic hydrate inhibitor, an additional anti-agglomerant, an asphaltene inhibitor, a paraffin inhibitor, a corrosion inhibitor, a scale inhibitor, an emulsifier, a water clarifier, a dispersant, an emulsion breaker, and combinations thereof.

9. The composition of claim 1 , further comprising at least one polar or nonpolar solvent or a mixture thereof.

10. A method of inhibiting the formation of hydrate agglomerates in a fluid comprising water, gas, and optionally liquid hydrocarbon comprising adding to the fluid the composition of claim 1 .

11. The method of claim 10 , wherein the fluid is contained in an oil or gas pipeline or refinery.

12. A composition comprising the following formula:

wherein R 1 is C 1 -C 10 alkyl, benzyl, or H;
wherein R 2 is C 5 -C 10 alkyl, benzyl, or H;
wherein R 3 is C 5 -C 10 alkyl, benzyl, or H; and
wherein R 4 is C 4 -C 22 alkyl or alkenyl.

13. A method of inhibiting the formation of hydrate agglomerates in a fluid comprising water, gas, and optionally liquid hydrocarbon comprising adding to the fluid the composition of claim 12 .

14. A method of inhibiting the formation of hydrate agglomerates in a fluid comprising water, gas, and optionally liquid hydrocarbon comprising adding to the fluid a composition comprising the following formula:

wherein R 1 is C 1 -C 10 alkyl, benzyl, or H;
wherein R 2 is C 1 -C 10 alkyl, benzyl, or H;
wherein R 3 is C 1 -C 10 alkyl, benzyl, or H; and
wherein R 4 is C 4 -C 22 alkyl or alkenyl.

15. The method of claim 14 , comprising at least one or any combination of the following formulas

16. The method of claim 14 , wherein R 1 is C 1 -C 10 alkyl or benzyl.

17. The method of claim 14 , wherein R 2 and R 3 are independently selected from C 5 -C 10 alkyl, benzyl, or H.

18. The method of claim 14 , wherein said fluid has a salinity of 1% to 25% w/w percent TDS.

19. The method of claim 14 , wherein said fluid has a water cut from 1 to 80% v/v total dissolved solids.

20. The method of claim 14 , wherein the fluid is contained in an oil or gas pipeline or refinery.

Assignees

• Ecolab Usa Inc
• Ecolab Usa Inc

Inventors

• Webber Peter A

Classifications

• C09K2208/22

  Hydrates inhibition by using well treatment fluids containing inhibitors of hydrate formers · CPC title

• C07C229/26

  having more than one amino group bound to the carbon skeleton, e.g. lysine · CPC title

• C07C229/16

  to carbon atoms of hydrocarbon radicals substituted by amino or carboxyl groups, e.g. ethylenediamine-tetra-acetic acid, iminodiacetic acids · CPC title

• C09K8/52 Primary

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

• C10L3/107

  Limiting or prohibiting hydrate formation · CPC title