Sector Model Simulation Steady of Water and Gas Injection Performance of ILAM oil Reservoir (JOFIER field) and Compare to Natural Depletion

In this report, brief description of modeling process to reach proposal scenarios, main results, conclusions and recommendations will be presented. WAG as an EOR method is being considered for Ilam reservoir, located onshore in south- west Iran. The reservoir under study is a reservoir with high amount of H2S and asphaltene. The only drive mechanism is Solution gas drive and it has no active aquifer so although it had good flow potential. By using new reservoir management techniques and enhanced oil recovery in order to pressure maintenance one can recover a lot more oil. The scope of this project was to evaluate in terms of impact of surface facilities, reserves and recovery factor by:  Natural Deletion  Water Injection  Gas Injection  Water alternating gas There are several wells in model and this was possible to change function of production well to injector if needed. Sector model was run for different scenarios and realizations and the best EOR method was selected by considering reservoir rock and fluid data and different injecting fluid composition and different injection pressure. After comprehensive study and technical evaluation it was found that. Gas injection was the best scenario allowing longer plateau compared to Natural depletion and other scenarios.