Alkenyl succinimides and use as natural gas hydrate inhibitors

Patent metadata

Field	Value
Publication number	US-11377583-B2
Application number	US-201916665874-A
Country	US
Kind code	B2
Filing date	Oct 28, 2019
Priority date	Oct 29, 2018
Publication date	Jul 5, 2022
Grant date	Jul 5, 2022

Abstract

Disclosed are succinimide-based compounds used in compositions and methods for inhibiting natural gas hydrate agglomerates. The succinimide-based compounds are reaction products of an alkenyl succinic anhydride and an amine or amine alcohol.

First claim

What is claimed is:

1. A composition comprising succinimide-based compounds having the general formula:

wherein R 1 is a ring structure linking to R 2 ,
wherein R 2 is a ring structure linking to R 1 , and
wherein, R 3 is an alkyl or alkenyl chain or ring, saturated or unsaturated.

2. A method of inhibiting formation of agglomerates of natural gas hydrates comprising:
introducing into a fluid a composition comprising the succinimide-based compounds of claim 1 to inhibit formation of agglomerates of natural gas hydrates.

3. The method of claim 2 , wherein introducing is by injecting or pumping.

4. The method of claim 2 , wherein introducing is into a downhole.

5. The method of claim 2 , wherein the fluid is contained in an oil or natural gas production operation or pipeline.

6. The method of claim 2 , wherein the fluid comprises water, natural gas, and liquid hydrocarbon.

7. The method of claim 2 , wherein the fluid comprises water of about 1% to about 80% weight/weight with respect to a hydrocarbon phase.

8. The method of claim 2 , wherein the composition further comprises corrosion inhibitors, thermodynamic gas hydrate inhibitors, kinetic gas hydrate inhibitors, anti-agglomerants, asphaltene inhibitors, paraffin inhibitors, scale inhibitors, emulsifiers, water clarifiers, dispersants, emulsion breakers, or any combination thereof.

9. The composition of claim 1 , wherein R1 and R2 are each selected from an aminopropyl pyrrolidine or aminopropyl azepine.

10. The composition of claim 1 , wherein the succinimide-based compounds are from about 1 wt/v % to about 80 wt/v % based on the composition.

11. The composition of claim 1 , wherein the composition further comprises corrosion inhibitors, thermodynamic gas hydrate inhibitors, kinetic gas hydrate inhibitors, anti-agglomerants, asphaltene inhibitors, paraffin inhibitors, scale inhibitors, emulsifiers, water clarifiers, dispersants, emulsion breakers, or any combination thereof.

12. A composition comprising:
a fluid; and
the succinimide-based compounds of claim 1 .

13. The composition of claim 1 , wherein the succinimide-based compounds are about 1000 ppm to 50,000 ppm.

14. The composition of claim 12 , wherein the fluid comprises water, natural gas, and liquid hydrocarbon.

Assignees

• Championx Usa Inc

Inventors

• Bartels Jeremy Wayne
• Servesko Jeffrey Michael
• Kundu Kousik
• Laurent Boyd Anthony
• Tarverdi David Field
• Anantaneni Prakasa Rao
• Moloney Jeremy

Classifications

• C09K2208/22

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

• C10L3/107

  Limiting or prohibiting hydrate formation · CPC title

• C07D207/404

  with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms, e.g. succinimide · CPC title

• C10L1/224

  Amides; Imides {carboxylic acid amides, imides (C10L1/221, C10L1/2227 take precedence)} · CPC title

• C09K8/52 Primary

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