The Smørbukk Field comprises a deep, very heterogeneous reservoir with variable fluids (gas condensate to light oil). This study presents a series of sensitivity studies to evaluate the effect of different geological parameters and development options on oil production and gas oil ratio within a sector of that field. The black-oil Eclipse reservoir simulator is used to represent the gas displacing oil behavior of this rather complex reservoir. Constant production rates and pressure controls are assumed. Detailed geological models of sedimentary and structural heterogeneity were used to define reservoir simulation models with upscaled permeabilities and relative permeabilites. Displacement and transmissibility reduction across faults were explicitly modeled and compared with simpler assumptions. The main performance measure used is oil recovery and GOR at the five year production point. Important interactions between geological assumptions and fluid rates and pressures were identified and used to identify the most promising production strategy.

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