An Exact Downscaling Methodology in Presence of Heterogeneity:Application to the Athabasca Oil Sands

摘要

Geostatistical realizations are often built at an arbitrary scale based on available data and computational resources.In certain settings,it may be necessary to downscale the realizations for flow simulation and local resource assessment. This is especially important in the Athabasca Oilsands where accurate flow simulation often requires numerical models with a very fine grid size.Flow simulation is undertaken for selected areas and realizations.It is intractable to construct the original geostatistical models at the fine scale.It is desirable to construct finer scale models that reproduce the original realizations exactly.