Composition for reducing the amount of and preventing the format

Details Composition for reducing the amount of and preventing the format Composition for reducing the amount of and preventing the format

1994-09-15

1998-05-12

Lankford, Jr., Leon B.

Chemistry: molecular biology and microbiology

Micro-organism, per se ; compositions thereof; proces of...

4352521, 435260, C12N 100, C12N 112, C12N 120

Patent

active

057503923

ABSTRACT:
Hydrogen sulfide present in an aqueous system is removed and the production of hydrogen sulfide by sulfate-reducing bacteria (SRB) is eliminated by introducing into the system nitrite and nitrate and/or molybdate ions, whereby denitrifying microorganisms outcompete the sulfate-reducing bacteria for the available carbon nutrients, thus preventing the SRB from producing hydrogen sulfide and the nitrite along with the denitrifying microorganisms remove hydrogen sulfide already present in the system. The system which contains the denitrifying microorganisms and which is essentially free of hydrogen sulfide can enhance oil recovery by means of a microbial enhanced oil recovery mechanisms.

REFERENCES:
patent: 3607736 (1971-09-01), Yusho
patent: 4049559 (1977-09-01), Grier et al.
patent: 4161397 (1979-07-01), Bellet et al.
patent: 4384956 (1983-05-01), Mulder
patent: 4415461 (1983-11-01), Mansel et al.
patent: 4591443 (1986-05-01), Brown et al.
patent: 4620595 (1986-11-01), Schutt
patent: 4681687 (1987-07-01), Mouche et al.
patent: 4683064 (1987-07-01), Hallberg et al.
patent: 4696802 (1987-09-01), Bedell
patent: 4879240 (1989-11-01), Sublette et al.
patent: 4880542 (1989-11-01), Sublette
patent: 4911843 (1990-03-01), Hunniford et al.
patent: 5074991 (1991-12-01), Weers
patent: 5141647 (1992-08-01), Bhadra
patent: 5250483 (1993-10-01), Sperl et al.
Knapp et al., "Microbial Field Pilot Study", 1988, pp. 159-162.
Sperl et al., "The Use of Natural Microflora, Electron Acceptors and Energy Sources for Enhanced Oil Recovery", Abstract.
Knapp et al., Microbially Enhanced Oil Recovery Field Pilot Payne County, Oklahoma, Abstract.
McInerney et al., "Causes and Control of Microbially Induced Souring", Abstract.

Affiliated with

Also associated with

Rating

Composition for reducing the amount of and preventing the format does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Composition for reducing the amount of and preventing the format, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition for reducing the amount of and preventing the format will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-978491