Microbial metabolism of chlorine oxyanions as a control of biogenic hydrogen sulfide production

Patent metadata

Field	Value
Publication number	US-9365845-B2
Application number	US-201214123073-A
Country	US
Kind code	B2
Filing date	May 31, 2012
Priority date	Jun 3, 2011
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

The present disclosure relates to methods of controlling the sulfide (S2˜) content in systems, such as oil and gas reservoirs and pipelines, by the use of chlorine oxyanions and microorganisms with (per)chlorate-reducing activity.

First claim

I claim:

1. A method of inhibiting sulfidogenesis in a system, the method comprising:
a) providing a system, wherein the system is selected from the group consisting of an oil recovery system, an oil reservoir, an oil-water separator, an oil storage tank, an oil pipeline, a wellhead, a gas pipeline, a gas supply line, a natural gas reservoir, a cooling water tank, a coal slurry pipeline, a CO 2 storage well, a processing plant, a refinery, an oil refinery, a gas-liquid separator, a chemical plant, a desalination plant, a wastewater treatment plant, and a wastewater effluent system, and wherein the system comprises one or more sulfate-reducing bacteria;
b) adding one or more (per)chlorate-reducing bacteria to the system; and
c) adding a composition comprising perchlorate to the system, at a concentration sufficient to inhibit sulfate-reducing activity of the sulfate-reducing bacteria, thereby inhibiting sulfidogenesis in the system.

2. The method of claim 1 , wherein the one or more (per)chlorate-reducing bacteria are selected from the group consisting of Ideonella; Dechloromarinus; Dechloromarinus strain NSS; Dechloromonas; Dechloromonas strain FL2, FL8, FL9, CKB, CL, NM, MLC33, JM, HZ, CL24plus, CL24, CC0, RCB, SIUL, and MissR; Dechloromonas aromaticae; Dechloromonas hortensis; Magnetospirillum; Magnetospirillum strain SN1, WD, DB, and VDY; Azospirillum; Azospirillum strain TTI; Azospira; Azospira strain AH, Iso1, Iso2, SDGM, PDX, KJ, GR-1, and perc1ace; Azospira suillum strain PS; Dechlorobacter; Dechlorobacter hydrogenophilus strain LT-1 ; Propionivibrio; Propionivibrio strain MP; Wolinella; Wolinella succinogenes strain HAP-1 ; Moorella; Moorella perchloratireducens; Sporomusa; Sporomusa strain An4 ; Proteus; Proteus mirabilis; Escherichia; Shewanella; Shewanella alga; Shewanella alga strain ACDC; Shewanella oneidensis strain MR1 ; Rhodobacter; Rhodobacter capsulatus; Rhodobacter sphaeroides; Alicycliphilus; Alicycliphilus denitroficans; Pseudomonas strain PK, CFPBD, PDA, and PDB; and Pseudomonas chloritidismutans.

3. The method of claim 1 , wherein the method further comprises adding nitrite.

4. The method of claim 3 , wherein the nitrite is added at a concentration sufficient to inhibit the sulfate-reducing bacteria.

5. The method of claim 3 , wherein the nitrite is added in amount sufficient to yield a perchlorate to nitrite ratio of 100:1.

6. The method of claim 3 , wherein the nitrite is added to the system prior to adding the perchlorate to the system.

7. The method of claim 1 , wherein the system is an oil reservoir system.

8. The method of claim 1 , wherein the system is a natural gas reservoir system.

9. The method of claim 1 , wherein the system comprises sulfate, and wherein the perchlorate is at a concentration that is at least 50% of the concentration of the sulfate present in the system.

10. The method of claim 1 , wherein the system comprises sulfate, and wherein the perchlorate is at a concentration that is between 50% and 100% of the concentration of the sulfate present in the system.

11. The method of claim 1 , wherein the system is an oil-water separator.

12. The method of claim 1 , wherein the system is an oil storage tank.

13. The method of claim 1 , wherein the system is an oil pipeline.

14. The method of claim 1 , wherein the system is a gas pipeline.

15. The method of claim 1 , wherein the system is a wellhead.

16. The method of claim 1 , wherein the system is a natural gas reservoir.

17. The method of claim 1 , wherein the system is a cooling water tank.

18. The method of claim 1 , wherein the system is a coal slurry pipeline.

19. The method of claim 1 , wherein the system is a chemical plant.

20. The method of claim 1 , wherein the one or more (per)chlorate-reducing bacteria are Dechloromarinus.

21. The method of claim 1 , wherein the one or more (per)chlorate-reducing bacteria are Dechloromarinus strain NSS.

22. The method of claim 1 , wherein the one or more (per)chlorate-reducing bacteria are Magnetospirillum.

23. The method of claim 1 , wherein the one or more (per)chlorate-reducing bacteria are Moorella.

24. The method of claim 1 , wherein the one or more (per)chlorate-reducing bacteria are Shewanella.

25. The method of claim 1 , wherein the one or more (per)chlorate-reducing bacteria are Pseudomonas.

Assignees

• Coates John D
• Univ California

Inventors

• Coates John D

Classifications

• C12N1/00

  Microorganisms; Compositions thereof (medicinal preparations containing material from protozoa, bacteria or viruses A61K35/66, from algae A61K36/02, from fungi A61K36/06; preparing medicinal bacterial antigen or antibody compositions, e.g. bacterial vaccines, A61K39/00); Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor · CPC title

• C12N9/99 Primary

  Enzyme inactivation by chemical treatment · CPC title

• C09K2208/20

  Hydrogen sulfide elimination · CPC title

• C07K14/195 Primary

  from bacteria · CPC title

• C09K8/532 Primary

  Sulfur · CPC title