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    Stress-dependence of elastic properties of rock containing finite cracks with contacting surfaces

    Access Status
    Fulltext not available
    Authors
    Glubokovskikh, Stanislav
    Gurevich, Boris
    Lebedev, Maxim
    Mikhaltsevitch, Vassili
    Date
    2015
    Type
    Conference Paper
    
    Metadata
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    Citation
    Glubokovskikh, S. and Gurevich, B. and Lebedev, M. and Mikhaltsevitch, V. 2015. Stress-dependence of elastic properties of rock containing finite cracks with contacting surfaces, in Proceedings of the SEG Annual Meeting, Oct 18-23 2015, pp. 3229-3233. New Orleans: Society of Exploration Geophysicists.
    Source Title
    SEG Technical Program Expanded Abstracts 2015
    Source Conference
    SEG Annual Meeting
    DOI
    10.1190/segam2015-5905971.1
    ISSN
    1949-4645
    School
    Department of Exploration Geophysics
    URI
    http://hdl.handle.net/20.500.11937/33416
    Collection
    • Curtin Research Publications
    Abstract

    In the present study we examine a modelling of stress-dependence of elastic properties of rocks. We develop a micromechanical theory of changes of the elastic moduli with external loading based on the crack stiffening by contacting asperities. We utilize exact solutions existent for annular crack, welded-area and Hertz contacts. The proposed theory is then used in analysis of experimental results. Parameters of the rock sample recovered from the pressure dependencies of bulk and shear moduli are consistent with each other and physically reasonable. Presented results are based on several simplified assumptions but the theory is ready to incorporate further complexifications (such as contacts interaction and inclusions’ size distribution).

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