Wavelet upscaling based on piecewise bilinear approximation of the permeability field |
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Authors: | Stein Nilsen Magne S Espedal |
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Institution: | (1) Department of Mathematics, University of Bergen, Bergen, Norway |
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Abstract: | A method for upscaling of permeability in heterogeneous porous media is presented. The upscaled field takes the form K = e
Y
, where Y, in two dimensions, is a piecewise bilinear function. The method is tested on a number of random permeability fields, with different integral scale/correlation length and variance. The numerical results show that this method conserves much more of the heterogeneous fingering than classical block-based upscaling methods, e.g., geometric mean. |
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Keywords: | permeability upscaling flow prediction |
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