EXPANDING INFLOW PERFORMANCE RELATIONSHIP CORRECTION: A METHODOLOGY FOR EXPLICIT COUPLING CONSIDERING INJECTIVITY LOSS FROM PRODUCED WATER RE-INJECTION (PWRI)

Abstract

This study proposes a novel methodology for correcting the Inflow Performance Relationship (IPR) with explicit coupling, which considers injectivity loss in wells. This methodology can be used for evaluation of complex physical phenomena due PWRI in integrated reservoir and production systems with produced water re-injection. The present study proposes a correction to include injectivity loss for injector wells for an adopted IPR. The benchmark scenario, which includes high injectivity wells, validates the explicit coupling methodology with IPR corrections for wells with injectivity loss using a case with known response in typical well operation in production and injection of fluids. Production forecasts are compared with observed water injection and well bottom-hole pressure results from standalone reservoir simulation. Results show that, for explicit coupling correction outside reservoir simulator, the improved IPR correction methodology formulation is adequate for considering injectivity loss with same results from other methods. The explicit coupling runs between reservoir simulator and production systems obtained satisfactory results when compared to the use of standalone methodology. For both, produced and injected fluids during the life cycle runs, the cases showed similar behavior. The injectivity loss implemented in the reservoir simulator and in coupler are adequately treated by IPR correction methodologies, honoring injector well restrictions, such as maximum water rate and bottom-hole pressure. This work opens new opportunities for testing injectivity loss effects with other effects, such as separation efficiency in PWRI and flow assurance in wells and gathering system for any simulators and coupler program.