E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
195/59
E21B 41/02 (2006.01) C12S 99/00 (2010.01) C09K 8/528 (2006.01) C09K 8/54 (2006.01) C09K 8/582 (2006.01) C12N 1/20 (2006.01) E21B 43/20 (2006.01)
Patent
CA 1334946
Mutant strains of Thiobacillus denitrificans are used to inoculate an environment containing sulfate and sulfate-reducing bacteria to control the net formation of sulfide. The mutant strains are tolerant of significant concentrations of soluble sulfides and may also be tolerant of glutaraldehyde which is a biocide effective against sulfate-reducing bacteria and which may also be added to the environment. One environment for use of the invention is in a water injection well for the secondary production of petroleum and another is the control of sulfide production in the treatment of waste materials.
604713
Manning Francis S.
Mcinerney Michael Joseph
Montgomery Anne Denise
Sublette Kerry Lyn
Woolsey Marion Elmer
Abb Environmental Services Inc.
Smart & Biggar
LandOfFree
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