Patent ID: 7933758

Claim:
A method of upscaling a three-dimensional model including a plurality of cells positioned within a plurality of zones, the method comprising: accessing the three dimensional model with a computer wherein the computer performs the following steps: (a) calculating a vertical cell property mean for at least one cell within at least one zone wherein the cell property is selected from the group consisting of rock type, porosity, permeability, water saturation, and combinations thereof; (b) generating at least one vertical mean trend sum for at least one of the zones utilizing the vertical cell property mean; (c) grouping cells utilizing the vertical mean trend sum to define a plurality of cell regions; (d) calculating a horizontal cell property variance for at least one of the cell regions; and (e) forming a plurality of cell blocks utilizing the horizontal cell property variance and further including the step of forming the plurality of cell blocks utilizing the maximum residual of the calculated variances.