Pore-to-Field Multi-Phase Upscaling for a Depressurization Process

C04 PORE-TO-FIELD MULTI-PHASE UPSCALING FOR A DEPRESSURIZATION PROCESS Abstract 1 This paper describes the application of a multi-step multi-phase upscaling technique to the Statfjord Field a mature oil field located in the North Sea. The method is aimed at consistently accounting for the effects of small-scale heterogeneities on field simulations. In this work special attention is given to the small-scale (pore- to lithofacies-scale) modeling and upscaling for a pressure depletion process in a water flooded reservoir. Five different lithofacies models for the Rannoch and Tarbert Formations were created. Both formations are central in the studied field and consequently have been