Experimental study on anaerobic activation of indigenous bacteria for Conglomerate reservior in Menggulin Oilfield

In order to estimate the potential of stimulating indigenous microorganisms in Menggulin Oilfield, anaerobic stimulation experiment is carried out according to the reservoir conditions and fluid properties. The anaerobic stimulation experiment is conducted with the own-designed equipment. During cultivation, the cell concentrations of the indigenous microorganisms are enumerated by most probable number（MPN）method. The pressure, pH value, gas production and composition are also monitored and the stimulating efficiency is then evaluated by the physical simulation method. The results suggest that the indigenous microorganisms could thrive and grow well under the reservoir condition. The gas-producing rate is 2.4 and the result of physical simulation exhibits a total enhanced oil recovery of 9.55 %.