Experiment of indigenous microbe oil displacement technology in S12 block

In view of exploitation and geology situation of S12 block,component of microbe and properties of fluid of reservoirs was studied,practicability of microbe oil displacement was identified.Nutritional formula to active microbe oil displacement was selected by laboratory experiment,and concentration of activator was simulated,test result shows that it can improve oil recovery over 9% after water flooding reservoir.Field test demonstrate that it can active bacterium of reservoir after injecting selected nutritional formula,and generated subject which can improve oil recovery.