A visualbasic program for histogram and variogram scaling

Bora Oz

doi:10.1016/S0098-3004(01)00011-5

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A visualbasic program for histogram and variogram scaling

2002-02-01

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Bora Oz *

Clayton V. Deutsch

Peter Frykman

DOI：10.1016/S0098-3004(01)00011-5

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Abstract

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The VarScale program (1) calculates dispersion variances for different support volumes. (2) performs variogram and histogram scaling, and (3) performs scaling of a linear model of coregionalization (LMC). The input variogram may be at any scale. The required dispersion variances (or average variogram values) are calculated. User input is automatically passed between different components of the program. This paper describes the theoretical background of the scaling algorithms, the program structure of VarScale and presents three examples. Variogram scaling from core scale to well-log scale is illustrated with data from a Danish North Sea reservoir. Histogram and LMC scaling are illustrated with data from a West Texas reservoir using porosity and seismic data. (C) 2002 Elsevier Science Ltd. All rights reserved.

Keywords:

geostatistics

affine correction

indirect lognormal correction

average variogram

dispersion variance

upscaling

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