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    Effect of the number of water alternating CO2 injection cycles on CO2 trapping capacity

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    Fulltext not available
    Authors
    Al-khdheeawi, Emad
    Vialle, Stephanie
    Barifcani, Ahmed
    Sarmadivaleh, Mohammad
    Iglauer, Stefan
    Date
    2019
    Type
    Journal Article
    
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    Citation
    Al-Khdheeawi, E. and Vialle, S. and Barifcani, A. and Sarmadivaleh, M. and Iglauer, S. 2019. Effect of the number of water alternating CO2 injection cycles on CO2 trapping capacity. The APPEA Journal. 59 (1): pp. 357-363.
    Source Title
    The APPEA Journal
    DOI
    10.1071/AJ18191
    ISSN
    1326-4966
    Faculty
    Faculty of Science and Engineering
    School
    WASM: Minerals, Energy and Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/80960
    Collection
    • Curtin Research Publications
    Abstract

    The CO storage capacity is greatly aected by CO injection scenario – i.e. water alternating CO (WACO ) injection, intermittent injection, and continuous CO injection – and WACO injection strongly improves the CO trapping capacity. However, the impact of the number of WACO injection cycles on CO trapping capacity is not clearly understood. Thus, we developed a 3D reservoir model to simulate WACO injection in deep reservoirs testing dierent numbers of WACO injection cycles (i.e. one, two, and three), and the associated CO trapping capacity and CO plume migration were predicted. For all dierent WACO injection cycle scenarios, 5000 kton of CO and 5000 kton of water were injected at a depth of 2275 m and 2125 m respectively, during a 10-year injection period. Then, a 100-year CO storage period was simulated. Our simulation results clearly showed, after 100 years of storage, that the number of WACO cycles aected the vertical CO leakage and the capacity of trapped CO . The results showed that increasing the number of WACO cycles decreased the vertical CO leakage. Furthermore, a higher number of WACO cycles increased residual trapping, and reduced solubility trapping. Thus, the number of WACO cycles signicantly aected CO storage eciency, and higher numbers of WACO cycles improved CO storage capacity.

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