Enhanced oil recovery using microorganisms

Details Enhanced oil recovery using microorganisms Enhanced oil recovery using microorganisms

1982-04-26

1984-05-08

Novosad, Stephen J.

Wells

Processes

Using microorganisms

166273, 166274, 435281, E21B 4322

Patent

active

044469195

ABSTRACT:
A post-primary oil recovery process is provided in which carbon dioxide-tolerating microorganisms are injected into an oil-bearing subterranean formation and feed on nutrients which are extracted from the oil by carbon dioxide injected and maintained under a pressure of at least about 500 psig. The products of microorganism growth enhance petroleum recovery from the formation.

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patent: 2641566 (1953-06-01), ZoBell
patent: 2660550 (1953-11-01), Updegraff et al.
patent: 2807570 (1957-09-01), Updegraff
patent: 3084743 (1963-04-01), West et al.
patent: 3185216 (1965-05-01), Hitzman
patent: 3332487 (1967-07-01), Jones
patent: 3340930 (1967-09-01), Hitzman

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