Sharif University of Technology Scientia Iranica 1026-3098 17 1 2010 06 01 A Technical Feasibility Analysis to Apply Pseudomonas aeroginosa MR01 Biosurfactant in Microbial Enhanced Oil Recovery of Low-Permeability Carbonate Reservoirs of Iran 3305 EN M. R. Adelzadeh Department of Chemical Engineering,Sharif University of Technology R. Roostaazad Department of Chemical Engineering,Sharif University of Technology M. R. Kamali Research Center,Sharif University of Technology T. Bagheri Lotfabad Research Center,Sharif University of Technology Journal Article 2010 07 18 The eect of an ecient 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 ooding resulted in oil recoveries as large as 20% to 28% Residual Oil (RO). 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 ooding, 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%. https://scientiairanica.sharif.edu/article_3305_7599b660980e35a601512fd21763117d.pdf