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    Modelling the low-frequency electrical properties of pyrite-bearing reservoir sandstones

    Access Status
    Fulltext not available
    Authors
    Han, T.
    Clennell, M.
    Pervukhina, Marina
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Han, T. and Clennell, M. and Pervukhina, M. 2015. Modelling the low-frequency electrical properties of pyrite-bearing reservoir sandstones. Marine and Petroleum Geology. 68 (Part A): pp. 341-351.
    Source Title
    Marine and Petroleum Geology
    DOI
    10.1016/j.marpetgeo.2015.08.037
    ISSN
    0264-8172
    School
    Department of Exploration Geophysics
    URI
    http://hdl.handle.net/20.500.11937/34701
    Collection
    • Curtin Research Publications
    Abstract

    © 2015 Elsevier Ltd. Marine controlled source electromagnetic sounding has developed rapidly in recent years to complement conventional seismic method for better discrimination of pore fluid. To obtain quantitative and reliable interpretation of the CSEM data, a robust rock physics model is vital to link the bulk rock electrical conductivity to the electrical properties and microstructure of the rock constituents, especially when some of the constituents exhibit extreme electrical behaviours (e.g., pyrite, a common mineral associated with reservoir rocks). Based on the multi-phase incremental model validated on published experimentally measured electrical conductivity of pyrite-bearing sandstones, the effects of key parameters, i.e., pyrite content, porosity, pyrite conductivity, grain aspect ratio and water saturation on the electrical conductivity of pyrite-bearing sandstones and their corresponding CSEM responses were comprehensively studied. The results are expected to assist in the CSEM data interpretation when a pyrite-bearing sandstone reservoir is encountered in the future.

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