Interpretation of Microbial Oil Recovery from Laboratory Experiments

C27 INTERPRETATION OF MICROBIAL OIL RECOVERY FROM LABORATORY EXPERIMENTS Abstract 1 Microbial Improved Oil Recovery (MIOR) involves stimulation of oil-degrading bacteria in order to mobilize previously trapped and bypassed oil. This paper presents a bacteria stimulated aerobic core experiment together with microbiological analyses and measurements of the impact aerobic bacteria may have on the interfacial tension (IFT). In addition the potential for improved recovery when including the measured IFT reduction is investigated by simulating a surfactant flood on a field scale model. The effect of microbial activity on relative permeabilities residual oil saturation IFT wetting properties etc. is important in