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    The role of interfacial impedance on poroelastic reflection coefficient

    Access Status
    Fulltext not available
    Authors
    Qi, Q.
    Müller, T.
    Gurevich, Boris
    Date
    2015
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Qi, Q. and Müller, T. and Gurevich, B. 2015. The role of interfacial impedance on poroelastic reflection coefficient, in Proceedings of the 77th EAGE Conference and Exhibition 2015: AVO - Theory for Imaging & Reflectivity, Jun 1-4 2015, pp. 865-869. Madrid, Spain: EAGE.
    Source Title
    77th EAGE Conference and Exhibition 2015: Earth Science for Energy and Environment
    DOI
    10.3997/2214-4609.201412626
    ISBN
    9781510806627
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/60946
    Collection
    • Curtin Research Publications
    Abstract

    The characteristics of the seismic P-wave reflection coefficient can depend on the properties of the interface separating two dissimilar poroelastic half-spaces. This interface behavior can be characterized by an interfacial impedance which is associated with various petrophysical scenarios. We study the effects of the interfacial impedance on wave propagation across the interface between gas- and fluid-saturated media as well as a fluid/porous-medium contact. We obtain the reflection coefficient accounting for the interfacial impedance for all frequencies and angles by solving the corresponding boundary value problem. The interfacial impedance shows small influence on the P-wave reflection coefficient for the gas/water contact at seismic frequencies. However, it substantially changes the amplitude and phase angle of the reflected P-wave for a fluid/porous-medium contact.

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