Recovery of oil from oil reservoirs

Details Recovery of oil from oil reservoirs Recovery of oil from oil reservoirs

1989-03-09

1990-11-20

Wyse, Tom

Wells

Processes

Using microorganisms

166273, 210610, 435281, E21B 4322

Patent

active

049711512

ABSTRACT:
This invention relates to a process for recovery of oil from oil reservoirs with assistance from microorganisms. More particularly, the present invention contemplates a method for recovering oil from a reservoir comprising increasing the population of endogenous microorganisms in said reservoir, said microorganisms having surface active properties, to a level sufficient to effect enhanced oil recovery.

REFERENCES:
patent: 2807570 (1957-09-01), Updegraff
patent: 3105014 (1963-09-01), Harrison
patent: 4450908 (1984-05-01), Hitzman
patent: 4475590 (1984-10-01), Brown
patent: 4558739 (1985-12-01), McInerney et al.
patent: 4640767 (1987-02-01), Zajic et al.
patent: 4799545 (1989-01-01), Silver

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