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A technical feasibility analysis to apply Pseudomonas aeroginosa MR01 biosurfactant in microbial enhanced oil recovery of low-permeability carbonate reservoirs of Iran

Adelzadeh, M. R ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. Publisher: 2010
  3. Abstract:
  4. The effect of an efficient biosurfactant produced from Pseudomonas aeroginosa MR01, a bacterial strain isolated from oil excavation areas in southern Iran, on the recovery of residual oil trapped within carbonate rocks, was investigated. In a core holder set-up, bearing a number of limestone-and dolomite-containing core samples, biosurfactant flooding resulted in oil recoveries as large as 20% to 28% Residual Oil (R.O). Biosurfactant injection in less permeable rocks in a range of 0.5 to 32 md was more successful, in terms of oil production. In the case of the least oil recovery via biosurfactant flooding, incubation of the core with a biosurfactant solution at reservoir conditions, increased the recovery from 13% residual oil at zero resting time, to 15% after a resting time of one week and to about 30% after a resting time, of about two weeks. Based on interfacial tension measurements, salinity and, to a larger extent, biosurfactant reduced interfacial tension. When salinity increased from 170000 to 200000 ppm, the fraction of residual oil production increased to about 20%
  5. Keywords:
  6. Biosurfactant ; Interfacial tension ; Oil recovery ; Pseudomonas aeroginosa ; Water flooding ; Bio surfactant ; Biosurfactant flooding ; Oil recoveries ; Biomolecules ; Low permeability reservoirs ; Petroleum reservoir engineering ; Recovery ; Salinity measurement ; Surface active agents ; Enhanced recovery ; Bacterium ; Carbonate ; Dolomite ; Enhanced oil recovery ; Flooding ; Limestone ; Oil production ; Permeability ; Salinity ; Surface tension ; Bacteria (microorganisms) ; Pseudomonas
  7. Source: Scientia Iranica ; Volume 17, Issue 1 C , JANUARY-JUNE , 2010 , Pages 46-54 ; 10263098 (ISSN)
  8. URL: http://en.journals.sid.ir/ViewPaper.aspx?ID=180062