A comparison of two-phase dynamic upscaling methods based on fluid potentials

N. H. Darman, G. E. Pickup, K. S. Sorbie

    Research output: Contribution to journalArticle

    43 Citations (Scopus)

    Abstract

    Although a number of methods for calculating dynamic pseudo-functions have been developed over the years, there is still a lack of understanding as to why a certain method will succeed in some cases but fail in others. In this paper, we describe the results of an assessment of several upscaling methods, namely the Kyte and Berry (KB) method, the Stone method, the Hewett and Archer (HA) method and the Transmissibility-Weighted (TW) method. We have analyzed the equations for deriving the methods and investigated the results of numerical simulations of gas displacing oil, in a variety of models to enable us to gain new insights into these, and related, upscaling methods. In particular, some novel observations on methods based on fluid potential are presented and the issue of using predicted fluid mobilities as a criterion of accuracy of an upscaling method is clarified.

    Original languageEnglish
    Pages (from-to)5-27
    Number of pages23
    JournalComputational Geosciences
    Volume6
    Issue number1
    DOIs
    Publication statusPublished - 2002

    Keywords

    • Pseudo-functions
    • Two-phase flow
    • Upscaling

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