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US 4,395,341 AGranted
Use of metronidazole in oil recovery
AssigneeG. D. Searle & Co.
InventorRobert D. Muir
Life of this patent
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Abstract
The invention relates to the use of metronidazole as an improved bactericidal agent in flooding waters used in oil recovery operations.
Claims5
In a process of oil recovery characterized by the steps of injecting flooding water into oil-bearing subterranean formations to displace portions of the residual oil therein the improvement comprising using flooding water containing an effective antibacterial amount of metronidazole.
A method for controlling bacterial growth during oil recovery operations comprising contacting the bacterial growth present during oil recovery operations with a 0.1 to 500 PPM metronidazole solution.
Dependencies are inferred from the claim text.