Abstract
The OOIP (original oil in-place) of bitumen in fractured carbonate reservoir of Grosmont, Canada is estimated at about 406.5 billion barrels. The Grosmont reservoir is characterized as various matrix sizes due to heterogeneity in fracture density. SAGD simulations for the Grosmont Formation have been based on the dual porosity and dual permeability model. In this study, characteristic variables for fracture system are considered to reflect the mechanism in fracture due to steam injection. The result shows that the characteristic variables play important role in dual porosity model, while trivial in dual permeability model. The effect of the characteristic variables for fracture system has been investigated in terms of the optimal preheating period, recovery factor, and cSOR.
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