Method and apparatus for on-site nitrate production for a...

Details Method and apparatus for on-site nitrate production for a... Method and apparatus for on-site nitrate production for a...

2011-05-03

2011-05-03

Bates, Zakiya W. (Department: 3676)

Wells

Above ground apparatus

Treatment of produced fluids

C166S090100, C405S129950

Reexamination Certificate

active

07934544

ABSTRACT:
An electric plasma arc apparatus and method produces nitrogen compounds, solely using ambient air extracted in proximity to the apparatus. The nitrogen compounds are brought into contact with a water processing system, forming nitrate on-site. Hydrogen sulfide present in the water processing system is removed, and the production of hydrogen sulfide by sulfate-reducing bacteria (SRB) is eliminated by introducing nitrate into the system, whereby denitrifying microorganisms, using the nitrate, outcompete the sulfate-reducing bacteria for the available carbon nutrients, thus preventing the SRB from producing hydrogen sulfide. Nitrate ions generated in the water processing system which contains the denitrifying microorganisms can enhance oil recovery by means of microbial enhanced oil recovery mechanisms. Further, the electric plasma arc apparatus and methodology eliminate major costs of conventional treatment techniques, including the transportation and storage of nitrate and the need for a continuous supply of natural gas and water.

REFERENCES:
patent: 4141715 (1979-02-01), Wyse et al.
patent: 4267027 (1981-05-01), Amouroux et al.
patent: 5044435 (1991-09-01), Sperl et al.
patent: 5405531 (1995-04-01), Hitzman et al.
patent: 7674443 (2010-03-01), Davis
patent: WO 2004048851 (2004-06-01), None
International Search Report PCT/US2009/062316 dated May 19, 2010.

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