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The AAPG/Datapages Combined Publications Database

Journal of Petroleum Geology

Abstract

Journal of Petroleum Geology, vol.

20(2), April 1997, pp. 185-204
┬ęCopyright 1997. Scientific Press, U.K. All rights reserved.

FUZZY MODELLING AND THE PREDICTION OF POROSITY AND PERMEABILITY FROM THE COMPOSITIONAL AND TEXTURAL ATTRIBUTES OF SANDSTONE

J. H. Fang* and H. C. Chen**

A new method is presented here for predicting porosity and permeability from the compositional and textural characteristics of sandstones. The method employs fuzzy modelling which is a linguistic paradigm based on fuzzy logic, rooted in the theory of fuzzy sets. The essentials of fuzzy modelling are explained using an example in which porosity and permeability values of a sandstone are predicted from five compositional and textural attributes. Fuzzy modelling can be accomplished in five steps:

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