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    Mathematical model for calculating the dispersion coefficient of super critical CO2 from the results of laboratory experiments on enhanced gas recovery

    Access Status
    Fulltext not available
    Authors
    Sidiq, Hiwa
    Amin, Robert
    Date
    2009
    Type
    Journal Article
    
    Metadata
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    Citation
    Sidiq, Hiwa and Amin, Robert. 2009. Mathematical model for calculating the dispersion coefficient of super critical CO2 from the results of laboratory experiments on enhanced gas recovery. Journal of Natural Gas Science and Engineering. 1 (6): pp. 177-182.
    Source Title
    Journal of Natural Gas Science and Engineering
    DOI
    10.1016/j.jngse.2009.11.001
    ISSN
    18755100
    Faculty
    Woodside Hydrocarbon Research Facility (WRF)
    Faculty of Science and Engineering
    School
    Woodside Hydrocarbon Research Facility (Industry Research Centre)
    Remarks

    The link to the journal’s home page is: http://www.elsevier.com/wps/find/journaldescription.cws_home/716470/description#. Copyright © 2009 Elsevier B.V. All rights reserved

    URI
    http://hdl.handle.net/20.500.11937/39249
    Collection
    • Curtin Research Publications
    Abstract

    A straightforward method is presented for calculating the dispersion coefficient of super-critical carbondioxide (SCO2) displacing methane in a linear porous reservoir. The dispersivity of SCO2 was identified to be a function of injected pressure, in-situ gas composition and injection rate. It was found to vary proportionally to changes in purity of the displaced phase and injection rate, while inversely varying with injected pressure. The aim of this study was to investigate the impact of injection rates and various test conditions (pressure and temperature) on recovery efficiency. Experimental results revealed methane recovery is improved with increasing pore pressure and composition of the in-situ gas, while poor recovery efficiency resulted with decreasing injection rates below 10 cm/h. All experiments were carried out on the same core plug from a single gas field. The dimension of the core was measured as 19.41 cm in length and 12.255 cm in diameter. Preliminary tests indicated air permeability of 92.5 md and porosity of 0.143.

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