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    Reservoir simulation for enhanced gas recovery: An economic evaluation

    Access Status
    Fulltext not available
    Authors
    Hussen, Chawarwan
    Amin, Robert
    Madden, Gary
    Evans, Brian
    Date
    2012
    Type
    Journal Article
    
    Metadata
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    Citation
    Hussen, Chawarwan and Amin, Robert and Madden, Gary and Evans, Brian. 2012. Reservoir simulation for enhanced gas recovery: An economic evaluation. Journal of Natural Gas Science and Engineering. 5: pp. 42-50.
    Source Title
    Journal of Natural Gas Science & Engineering
    DOI
    10.1016/j.jngse.2012.01.010
    ISSN
    1875-5100
    URI
    http://hdl.handle.net/20.500.11937/23324
    Collection
    • Curtin Research Publications
    Abstract

    The economic aspects of injecting carbon dioxide (CO2) into natural gas reservoirs for geo-sequestration and enhance natural gas production is investigated using a gas reservoir as case study. This method of enhanced gas production is attractive because it enhances the rate of gas recovery and reduces anthropogenic gas emissions. This paper focuses on the recovery factor of methane achieved by supercritical CO2 (SCO2) displacement under various production scenarios. Reservoir simulation models used based on assumptions and limitations by the degree of SCO2 and methane (C1) mixing in the reservoir, and operating parameters to delay CO2 breakthrough. Additionally, the economic viability of the enhanced gas recovery (EGR) process is analyzed to optimize the CO2 injection timing and injection rates. The re-injection strategies in each reservoir simulation case were designed to minimize the risk of methane contamination in the reservoir and maintaining the minimum level of CO2 in the production gas. Optimum injection strategies for various cases are presented in this paper that includes the adjustment of CO2 re-injection rate, velocities, timing and economical model.

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