Abstract

Constructing a reservoir simulation model requires an accurate definition of saturation functions, including capillary pressure and relative permeability data. Usually, these saturation functions are available only for a limited number of samples. Assigning saturation functions to the simulation model requires finding a clear relationship between them and a 3D predictable property of grid cells. Different indices are usually evaluated to describe such a relationship. It was recently shown that each petrophysical dynamic rock type should form similar True Effective Mobility (TEM) curves. In this study, TEM-function was used to evaluate the reliability and performance of different rock typing indices in defining dynamic rock types. FZI, FZIM, MFZI, and FZI∗ (FZI-star) indices were considered and tested on a collection of laboratory-derived core-flooding data from an Iranian carbonate reservoir. Results showed that FZI-star had a better performance than FZI, MFZI, and FZIM.

Full Text
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