C - Chemistry – Metallurgy – 12 – N
Patent
C - Chemistry, Metallurgy
12
N
C12N 1/20 (2006.01) C09K 8/582 (2006.01) C12N 1/00 (2006.01) E21B 43/22 (2006.01)
Patent
CA 2531963
The present invention provides a microbial consortium containing three hyperthermophilic, barophilic, acidogenic, anaerobic bacterial strains for enhanced oil recovery from oil reservoirs where temperatures range from 70 ~C to 90 ~C. The said microbial consortium is unique in producing a variety of metabolic products mainly CO2, methane, biosurfactant, volatile fatty acids and alcohols in the presence of specially designed nutrient medium. These metabolic products increase sweep efficiency of crude oil from oil bearing poles of rock formation. The present invention also provides a process for enhancing the oil recovery byin situ application of the said microbial consortium
La présente invention concerne un consortium microbien composé de trois souches bactériennes anaérobiques, acidogéniques, barophiles et hyperthermophiles permettant d'améliorer la récupération de pétrole à partir de gisements de pétrole dans lesquels la température est comprise entre 70 et 90 ·C. Ce consortium microbien est le seul à produire une variété de produits métaboliques qui sont principalement le CO¿2?, le méthane, un biosurfactant, des acides gras volatils et des alcools en présence d'un milieu nutritif spécialement conçu. Ces produits métaboliques augmentent l'efficacité de balayage du pétrole brut à partir de pores pétrolifères de formations rocheuses. Cette invention concerne également un procédé visant à améliorer la récupération de pétrole au moyen de l'application in situ de ce consortium microbien.
Agnihotri Anil
Khazanchi Shinben Kishen
Khurana Raj Karan
Kumar Ashok
Lal Banwari
Institute Of Reservoir Studies
Kerr & Nadeau
The Energy Research Institute
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