Zinc ammonium carbonate sulfide scavengers

Patent metadata

Field	Value
Publication number	US-10800684-B2
Application number	US-201916591204-A
Country	US
Kind code	B2
Filing date	Oct 2, 2019
Priority date	Feb 18, 2019
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

Methods for the use of zinc ammonium carbonate as a scavenger of sulfur-containing species encountered in oilfield operations are provided. In one embodiment, the methods include introducing a sulfide scavenging additive including zinc ammonium carbonate into at least a portion of a conduit through which a potential sulfur-containing fluid is flowing.

First claim

What is claimed is:

1. A method comprising:
introducing a sulfide scavenging additive comprising zinc ammonium carbonate and one or more glycols into at least a portion of a conduit through which a potential sulfur-containing fluid is flowing.

2. The method of claim 1 , wherein the sulfide scavenging additive comprises a solution comprising zinc ammonium carbonate in an amount of from about 0.1% to about 26% by weight of the solution.

3. The method of claim 1 , wherein the sulfide scavenging additive is in contact with the fluid for a contact time of from about 0.1 seconds to about 20 seconds.

4. The method of claim 1 , wherein a temperature of an environment in which the fluid is flowing is in the range of from about −20° C. to about 0° C.

5. The method of claim 1 , wherein the fluid comprises a gas phase and the gas phase comprises carbon dioxide in an amount of from about 0.01% to about 20% by volume of gas.

6. The method of claim 1 , wherein the fluid comprises at least one component selected from the group consisting of: water, salt water, brine, seawater, a gas, a liquid hydrocarbon, an oil-water mixed production fluid, and any combination thereof.

7. The method of claim 1 , wherein the fluid further comprises a sulfur-containing species that is selected from the group consisting of: hydrogen sulfide, a sulfide ion, a mercaptan, a polysulfide, and any combination thereof.

8. A method comprising:
introducing a sulfide scavenging additive comprising zinc ammonium carbonate and one or more glycols into a container in which a potential sulfur-containing fluid is present.

9. The method of claim 8 , wherein the sulfide scavenging additive comprises a solution comprising zinc ammonium carbonate in an amount of from about 0.1% to about 26% by weight of the solution.

10. The method of claim 8 , wherein the sulfide scavenging additive is in contact with the fluid for a contact time of from about 0.1 seconds to about 20 seconds.

11. The method of claim 8 , wherein a temperature of an environment in which the fluid is present is in the range of from about −20° C. to about 0° C.

12. The method of claim 8 , wherein the fluid comprises a gas phase and the gas phase comprises carbon dioxide in an amount of from about 0.01% to about 20% by volume of gas.

13. The method of claim 8 , wherein the fluid comprises at least one component selected from the group consisting of: water, salt water, brine, seawater, a gas, a liquid hydrocarbon, an oil-water mixed production fluid, and any combination thereof.

14. The method of claim 8 , wherein the fluid further comprises a sulfur-containing species that is selected from the group consisting of: hydrogen sulfide, a sulfide ion, a mercaptan, a polysulfide, and any combination thereof.

15. A method comprising:
introducing a sulfide scavenging additive comprising zinc ammonium carbonate and one or more glycols into a fluid retention pit in which a potential sulfur-containing fluid is present and wherein a temperature of an environment in which the fluid is present is in the range of from about −20° C. to about 0° C.

16. The method of claim 15 , wherein the sulfide scavenging additive comprises a solution comprising zinc ammonium carbonate in an amount of from about 0.1% to about 26% by weight of the solution.

17. The method of claim 15 , wherein the fluid comprises at least one component selected from the group consisting of: water, salt water, brine, seawater, a gas, a liquid hydrocarbon, an oil-water mixed production fluid, and any combination thereof.

Assignees

• Multi Chem Group Llc

Inventors

• Prince Philippe
• Gawas Kiran
• Mosina Yulia

Classifications

• C10G75/02 Primary

  by addition of corrosion inhibitors · CPC title

• B01D2251/206

  Ammonium compounds · CPC title

• C02F2103/365

  from petrochemical industry (e.g. refineries) · CPC title

• C02F2101/40

  containing sulfur · CPC title

• B01D2257/306

  Organic sulfur compounds, e.g. mercaptans · CPC title