Patents Assigned to Institute of Reservoir Studies
  • Process for enhanced recovery of crude oil from oil wells using novel microbial consortium
    Patent number: 7484560
    Abstract: 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 by in situ application of the said microbial consortium.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: February 3, 2009
    Assignees: The Energy and Resource Institute, Institute of Reservoir Studies
    Inventors: Banwari Lal, Mula Ramajaneya Varaprasada Reddy, Anil Agnihotri, Ashok Kumar, Munish Prasad Sarbhai, Nimmi Singh, Raj Karan Khurana, Shinben Kishen Khazanchi, Tilak Ram Misra
  • Process for enhanced recovery of crude oil from oil wells using novel microbial consortium
    Publication number: 20070092930
    Abstract: 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 by in situ application of the said microbial consortium.
    Type: Application
    Filed: July 14, 2004
    Publication date: April 26, 2007
    Applicants: The Energy and Resources Institute, Institute of Reservoir Studies
    Inventors: Banwari Lal, Mula Ramajaneya Reddy, Anil Agnihotri, Ashok Kumar, Munish Sarbhai, Nimmi Singh, Raj Khurana, Shinben Khazanchi, Tilak Misra