Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    The Pressure Dependence of the Archie Cementation Exponent for Samples from the Ordovician Goldwyer Shale Formation in Australia

    Access Status
    Fulltext not available
    Authors
    Zhong, Zhiqi
    Esteban, L.
    Rezaee, Reza
    Josh, M.
    Feng, Runhua
    Date
    2021
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Zhong, Z. and Esteban, L. and Rezaee, R. and Josh, M. and Feng, R. 2021. The Pressure Dependence of the Archie Cementation Exponent for Samples from the Ordovician Goldwyer Shale Formation in Australia. SPE Journal. 26 (5): pp. 2849-2859.
    Source Title
    SPE Journal
    DOI
    10.2118/206710-PA
    ISSN
    1086-055X
    Faculty
    Faculty of Science and Engineering
    School
    WASM: Minerals, Energy and Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/89538
    Collection
    • Curtin Research Publications
    Abstract

    Applying the realistic cementation exponent (m) in Archie’s equation is critical for reliable fluid-saturation calculation from well logs in shale formations. In this study, the cementation exponent was determined under different confining pressures using a high-salinity brine to suppress the surface conductivity related to the cation-exchange capacity of clay particles. A total of five Ordovician shale samples from the Canning Basin, Australia, were used for this study. The shale samples are all illite-rich with up to 60% clay content. Resistivity and porosity measurements were performed under a series of confining pressures (from 500 to 8,500 psi). Nuclear magnetic resonance (NMR) was used to obtain porosity and pore-size distribution and to detect the presence of residual oil. The complex impedance of samples was determined at 1 kHz to verify the change in pore-size distribution using the POLARIS model (Revil and Florsch 2010). The variation of shale resistivity and the Archie exponent m at different pressures is caused by the closure of microfractures at 500 psi, the narrowing of mesopores/macropores between 500 and 3,500 psi, and the pore-throat reduction beyond 3,500 psi. This study indicates that unlike typical reservoirs, the Archie exponent m for shale is sensitive to depth of burial because of the soft nature of the shale pore system. An equation is developed to predict m under different pressures after microfracture closure. Our study provides recommended experimental procedures for the calculation of the Archie exponent m for shales, leading to improved accuracy for well-log interpretation within shale formations when using Archie-based equations.

    Related items

    Showing items related by title, author, creator and subject.

    • Determination of Archie's cementation exponent for shale reservoirs; an experimental approach
      Zhong, Zhiqi; Rezaee, Reza ; Esteban, L.; Josh, M.; Feng, Runhua (2021)
      Archie's equation has been widely used in well-log interpretations for the fluid saturation calculation from electrical resistivity measurements. Though constrained standard Archie parameters are accepted in sandstone and ...
    • The salinity dependence of electrical conductivity and Archie's cementation exponent in shale formations
      Zhong, Zhiqi; Rezaee, Reza ; Josh, M.; Esteban, L.; Sarmadivaleh, Mohammad (2022)
      Electrical conductivity/resistivity is one of the key petrophysical parameters for well-log interpretation. However, in the shale formations, the fluid saturation determined from the well-known Archie-related equations ...
    • Shale lithofacies controls on porosity and pore structure: An example from Ordovician Goldwyer Formation, Canning Basin, Western Australia
      Iqbal, Muhammad Atif; Rezaee, Reza ; Smith, Gregory; Ekundayo, Jamiu (2021)
      The hydrocarbon storage and transport capacity of shale reservoirs are dependent on its complex pore systems. This study focuses on Ordovician Goldwyer Formation (Goldwyer shale) from Canning Basin, Western Australia. ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.