A technique for the dynamic generation of flow based PEBI (perpendicular-bisectional) grids is presented and applied. The procedure includes a fine scale flow solution, the generation of an initial streamline–isopotential grid, grid optimization, and upscaling. The grid optimization is accomplished through application of a hybrid procedure with gradient and Laplace smoothing steps, while the upscaling is based on a global– local procedure that makes use of the global solution used in the grid determination step. The overall procedure is successfully applied to a complex channelized reservoir model involving changing well conditions. The gridding and upscaling procedures presented here may also be suitable for use with other types of structured or unstructured grid systems.

Keywords:
scaling method, optimization, cartesian grid, unstructured grid, grid, isopotential, grid optimization, modeling & simulation, information, reservoir simulation
Subjects:
Reservoir Simulation, Scaling methods
Copyright 2004, Society of Petroleum Engineers
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