Steady-state upscaling: From lamina-scale to full-field model

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    Abstract

    In recent years, the impact of small-scale permeability structure on hydrocarbon recovery has been demonstrated, and upscaling procedures, such as the Geopseudo Method, have been developed to scale-up from the lamina scale, using the hierarchy of geological length scales. However, upscaling is very time consuming, so many engineers still input rock curves into large-scale simulations. In this study, we show how the process may be speeded up using steady-state methods for calculating the pseudo functions. A three-stage scale-up of a fluvio-aeolian reservoir was carried out. Capillary equilibrium was assumed for the first two stages, and viscous-dominated steady-state for the third stage. Two different wettability cases were examined -water-wet and intermediate-wet. The effect of using the small-scale pseudo relative permeabilities depends on both nature of the heterogeneities and on the wettability. In this study the recovery was reduced, especially in the water-wet case.

    Original languageEnglish
    Title of host publicationProceedings of the European Petroleum Conference
    Pages527-531
    Number of pages5
    Volume1
    Publication statusPublished - 1998
    Event1998 European Petroleum Conference - Hague, Netherlands
    Duration: 20 Oct 199822 Oct 1998

    Conference

    Conference1998 European Petroleum Conference
    Abbreviated titleEUROPEC '98
    CountryNetherlands
    CityHague
    Period20/10/9822/10/98

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  • Cite this

    Pickup, G. E. (1998). Steady-state upscaling: From lamina-scale to full-field model. In Proceedings of the European Petroleum Conference (Vol. 1, pp. 527-531)