Acrylate-based sulfur scavenging agents for use in oilfield operations

Patent metadata

Field	Value
Publication number	US-2017335188-A1
Application number	US-201415528186-A
Country	US
Kind code	A1
Filing date	Dec 23, 2014
Priority date	Dec 23, 2014
Publication date	Nov 23, 2017
Grant date	—

Abstract

Composition for the removal or inactivation of hydrogen sulfide or soluble sulfide ion other species comprising ionizable sulfur (e.g., mercaptans, thiols, etc.) using compositions containing acrylate and/or derivatives thereof are provided. Methods for the removal or inactivation of hydrogen sulfide or other sulfur species in oilfield sites and other related applications using compositions containing acrylate and/or derivatives thereof are provided.

First claim

What is claimed is:

1 . A method comprising:
providing a treatment fluid comprising a carrier fluid and an acrylate-based additive; and introducing the treatment fluid into at least a portion of a subterranean formation where one or more sulfur species are present.

2 . The method of claim 1 further comprising allowing the acrylate-based additive to interact with the sulfur species to reduce the amount of or inactivate at least a portion of the sulfur species present in the formation.

3 . The method of claim 1 wherein the pH level of the treatment fluid is approximately neutral.

4 . The method of claim 1 wherein the pH level of the treatment fluid is at least 5.

5 . The method of claim 1 wherein the acrylate-based additive further comprises one or more acrylate derivatives.

6 . The method of claim 5 wherein the one or more acrylate derivatives comprises an acrylate derivative containing a side chain with sulfur scavenging functionality.

7 . The method of claim 6 wherein the side chain is acrylonitrile.

8 . The method of claim 1 wherein the concentration of the acrylate-based additive in the treatment fluid is from about 0.5% to about 15% by weight of the treatment fluid.

9 . The method of claim 1 , wherein the acrylate-based additive comprises at least one compound selected from the group consisting of compounds having the general formula:

where R 1 is an atom or functional group selected from the group consisting of a hydrogen atom, an alkyl group, an alkene group, an alkyne group, an ester group, an ether group, a carbonyl group, a carbonyl amide group, a urea group, a urethane group, and any combination thereof; and
R 2 is a hydrocarbon chain.

10 . The method of claim 1 wherein the acrylate-based additive is provided in a closed storage tank system at a site where a well bore penetrating at least a portion of the subterranean formation is located, the tank system being equipped with at least an internal temperature probe and transmitter for remote monitoring of the temperature in the closed storage tank system.

11 . A method comprising:
providing a treatment fluid comprising a carrier fluid and an acrylate-based additive, and introducing the treatment fluid into at least a portion of a conduit or container where one or more sulfur species are present.

12 . The method of claim 11 further comprising allowing the acrylate-based additive to interact with the sulfur species to reduce the amount of or inactivate at least a portion of the sulfur species present in the conduit or container.

13 . The method of claim 11 wherein the conduit or container comprises at least a portion of a refining system.

14 . The method of claim 11 wherein the conduit or container comprises at least a portion of a pipeline.

15 . The method of claim 11 wherein the conduit or container comprises at least a portion of a water or sewage disposal system.

16 . A method for scavenging a sulfur species from a sulfur-containing fluid comprising:
providing an additive comprising an acrylate-based compound, and introducing the acrylate-based compound into at least a portion of the sulfur-containing fluid.

17 . The method of claim 16 further comprising allowing the acrylate-based compound to interact with the sulfur species to reduce the amount of or inactivate at least a portion of the sulfur species present in the sulfur-containing fluid.

18 . The method of claim 16 wherein the pH level of the sulfur-containing fluid is approximately neutral.

19 . The method of claim 16 wherein the additive is introduced into the sulfur-containing fluid in an amount such that the concentration of the additive is from about 0.5% to about 15% by weight of the fluid.

20 . The method of claim 16 , wherein the additive comprises at least one acrylate-based compound selected from the group consisting of compounds having the general formula:

where R 1 is an atom or functional group selected form the group consisting of a hydrogen atom, an alkyl group, an alkene group, an alkyne group, an ester group, an ether group, a carbonyl group, a carbonyl amide group, a urea group, a urethane group, and any combination thereof; and
R 2 is a hydrocarbon chain.

Assignees

• Multi Chem Group Llc

Inventors

• Shi Liu
• Zhao Funian
• Qu Liangwei
• Harless Michael
• Hoppe Ron

Classifications

• Y02W10/37

  using solar energy · CPC title

• C09K8/532 Primary

  Sulfur · CPC title

• C02F2101/101

  Sulfur compounds · CPC title

• C09K8/52

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

• C02F2103/10

  from quarries or from mining activities · CPC title