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    Stress dependency of elastic properties of shales: the effect of uniaxial stress

    173611_41708_Stress dependency of elastic properties of shales the effect of uniaxial stress.pdf (822.2Kb)
    Access Status
    Open access
    Authors
    Pervukhina, M.
    Gurevich, Boris
    Golodoniuc, Pavel
    Dewhurst, D.
    Date
    2011
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Pervukhina, Marina and Gurevich, Boris and Golodoniuc, Pavel and Dewhurst, David N. 2011. Stress dependency of elastic properties of shales: the effect of uniaxial stress, in Society of Exploration Geophysics (ed), SEG/San Antonio 2011, Sep 18 2011, pp. 2313-2318. San Antonio, Texas: SEG
    Source Title
    SEG Technical Program Expanded Abstracts
    Source Conference
    SEG/San Antonio 2011
    DOI
    10.1190/1.3627669
    ISSN
    1949-4645
    School
    Department of Exploration Geophysics
    Remarks

    A link to the Society's web site is available from the Related Links field.

    © 2011 Society of Exploration Geophysicists.

    URI
    http://hdl.handle.net/20.500.11937/13805
    Collection
    • Curtin Research Publications
    Abstract

    Understanding seismic anisotropy in shales is important for quantitative interpretation of seismic data, 4D monitoring and pore pressure prediction. Along with intrinsic anisotropy caused by preferred mineral orientation that is common in shales, anisotropic stress is an important factor that affects shale elastic response. While variations of elastic coefficients with anisotropic stress have been the subject of experimental studies, theoretical insight is still largely lacking. Here we suggest a new model that allows parameterization of the stress dependency of elastic coefficients of shales under anisotropic stress conditions. We show that the parameterization requires four parameters, namely, specific tangential compliance of a single crack, the ratio of normal to tangential compliances, characteristic pressure and a crack orientation anisotropy parameter. These parameters can be estimated from experimentally measured stress sensitivity of elastic coefficients in shales to isotropic stress.

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