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    A laboratory study of low-frequency wave dispersion and attenuation in water-saturated sandstones

    Access Status
    Fulltext not available
    Authors
    Mikhaltsevitch, Vassili
    Lebedev, Maxim
    Gurevich, Boris
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Mikhaltsevitch, V. and Lebedev, M. and Gurevich, B. 2014. A laboratory study of low-frequency wave dispersion and attenuation in water-saturated sandstones. The Leading Edge. 33 (6): pp. 616-622.
    Source Title
    The Leading Edge
    DOI
    10.1190/tle33060616.1
    ISSN
    1070-485X
    School
    Department of Exploration Geophysics
    URI
    http://hdl.handle.net/20.500.11937/3202
    Collection
    • Curtin Research Publications
    Abstract

    Laboratory measurements of elastic and anelastic parameters of dry and water-saturated sandstones with low (0.7- and 1.1-mD) and high (425-mD) permeability have been conducted at seismic frequencies (0.1 to 120 Hz). The experiments were performed with a laboratory apparatus that measures the stress-strain relationship in the linear regime. The extensional attenuation in water-saturated low-permeability sandstones exhibits prominent peaks in the seismic band, accompanied by considerable dispersion. Variations in attenuation and dispersion in the high-permeability sandstone are below the measurement error, as is the moduli dispersion in all the sandstones in dry condition. The experiments demonstrate that for low-permeability rocks, seismic frequencies do not necessarily correspond to the low-frequency limit (relaxed pore-fluid pressures) of acoustic wave dispersion.

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