Patent Document ID: 20100004908
Application ID: 12496218
Patent Flag: 0

Claim One:
1. A multi-scale finite volume method for use in simulating a fine-scale geological model of a subsurface reservoir, the method comprising: (a) providing a fine-scale geological model of a subsurface reservoir associated with a fine-scale grid having a plurality of fine-scale cells; (b) defining a primary coarse-scale grid having a plurality of primary coarse-scale cells; (c) defining a dual coarse-scale grid having a plurality of dual coarse-scale cells, the dual coarse-scale grid defining a portion of the fine-scale cells as internal cells, edge cells, and node cells; (d) constructing a coarse-scale operator responsive to the internal cells, edge cells, and node cells; (e) computing pressure in the dual coarse-scale cells using the coarse-scale operator; (f) computing pressure in the primary coarse-scale cells responsive to the pressure in the dual coarse-scale cells; and (g) producing a display responsive to the pressure in the primary coarse-scale cells.