Patent ID: 7472747

Claim:
A method for recovering oil from an oil-bearing reservoir, said reservoir having at least one injection well and at least one production well, said method comprising the steps of: introducing into said injection well of said reservoir, a microbial consortium selected from substantially pure cultures of microorganisms which are selected from the group consisting of ATCC Nos. PTA-5570 through PTA-5581 and a nutrient composition which comprises an aqueous solution of nutrients capable of supporting growth of said microorganisms of said formulation, said injected microorganisms capable of growth in said reservoir, at temperature ranges from about 20° C. to about 65° C.; maintaining said microbial consortium within said injection well for an amount of time sufficient for said microbial consortium to colonize within said reservoir; and, following said step of maintaining said microbial consortium, injecting a fluid into said injection well to drive displaced oil to the production well.