Simulation Analysis of Microbial Well Treatment of Bokor Field, Malaysia

Abstract

Abstract A total of eight wells in Bokor field, Sarawak were subjected for microbial treatment using the huff and puff method. All treated wells responded differently to the treatment. Increased gross liquid production and reduced water-cut were the primary means of net oil gained in some of the wells while others showed no significant changes after treatment. Well production performances and laboratory analysis are insufficient to conclude these discrepancies. To further evaluate and understand the well performances, an extensive simulation study has been conducted using the CMG-STARS simulator on two treated wells, which are B-1 and B-3. The simulation results were compared and matched to the actual well production trends to verify the well model built. Sensitivity analysis was performed to quantify various possible treatment impacts. The approach developed successfully represents the well responses and gives an insight look at the microbial behavior responsible for oil recovery.