Acrylate-based sulfur scavenging agents for use in oilfield operations

Patent metadata

Field	Value
Publication number	US-11225604-B2
Application number	US-202016787690-A
Country	US
Kind code	B2
Filing date	Feb 11, 2020
Priority date	Dec 23, 2014
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

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 for scavenging a sulfur species from a sulfur-containing fluid comprising: providing an additive comprising an acrylate-based compound, wherein the acrylate-based compound comprises at least one compound selected from the group consisting of compounds having the general formula:

where R 1 is a functional group selected from the group consisting of an alkyl group, an alkene group, an alkyne group, an ester group, an ether group, and any combination thereof; and
R 2 is a hydrocarbon chain;
introducing the acrylate-based compound into at least a portion of the sulfur-containing fluid; and
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.

2. The method of claim 1 wherein the pH level of the sulfur-containing fluid is approximately neutral.

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

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

5. The method of claim 4 , wherein the one or more acrylate derivatives comprises an acrylate derivative containing a side chain with sulfur scavenging functionality.

6. The method of claim 1 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.

7. The method of claim 1 wherein the acrylate-based compound interacts with the sulfur species at a temperature of about 100° F. or higher.

8. The method of claim 1 wherein the acrylate-based compound is introduced into at least a portion of a conduit or container where the sulfur-containing fluid is present.

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

10. The method of claim 9 , further comprising:
attaching an output of the internal temperature probe to the temperature transmitter;
transmitting temperature data from the temperature transmitter to a global positioning transceiver;
receiving the transmitted temperature data at a remote base station;
processing and collecting the temperature data;
comparing the processed temperature data to a predetermined temperature set point; and
initiating an alarm in a response processor when the temperature data corresponds to the predetermined temperature set point.

11. The method of claim 10 further comprising:
initiating a responsive action when the temperature data corresponds to the predetermined temperature set point, wherein the responsive action comprises at least one action selected from the group consisting of: activating a water deluge system, activating a local audible alarm system, activating a local visual alarm system, injecting an emergency buffer solution into the storage tank system, and any combination thereof.

12. The method of claim 10 wherein the predetermined temperature set point correlates to a polymerization reaction of the acrylate-based compound.

13. The method of claim 10 wherein the predetermined temperature set point is in the range of from about 80° F. to about 120° F.

14. The method of claim 13 wherein the predetermined temperature set point is about 100° F.

15. The method of claim 10 , further comprising:
transmitting response data from the response processor to a response module via the global positioning transceiver;
providing power to the response module from a battery having a solar panel controller; and
activating a response to control a polymerization reaction of the acrylate-based compound in the storage tank system.

16. The method of claim 15 wherein the response to control the polymerization reaction comprises at least one response selected from the group consisting of: injecting an emergency buffer solution into the storage tank system, activating a chemical delivery unit, activating a cooling solution delivery unit, and any combination thereof.

Assignees

• Multi Chem Group Llc
• Halliburton Energy Services Inc

Inventors

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

Classifications

• C02F2103/10

  from quarries or from mining activities · CPC title

• Y02W10/37

  using solar energy · CPC title

• C02F2101/101

  Sulfur compounds · CPC title

• C09K8/54

  Compositions for in situ inhibition of corrosion in boreholes or wells · CPC title

• B01D19/0005

  with one or more auxiliary substances · CPC title