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    Squirt flow influence on sonic log parameters

    Access Status
    Open access via publisher
    Authors
    Markova, I.
    Ronquillo Jarillo, G.
    Markov, M.
    Gurevich, Boris
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Markova, I. and Ronquillo Jarillo, G. and Markov, M. and Gurevich, B. 2014. Squirt flow influence on sonic log parameters. Geophysical Journal International. 196 (2): pp. 1082-1091.
    Source Title
    Geophysical Journal International
    DOI
    10.1093/gji/ggt442
    ISSN
    0956-540X
    School
    Department of Exploration Geophysics
    URI
    http://hdl.handle.net/20.500.11937/37903
    Collection
    • Curtin Research Publications
    Abstract

    Most sedimentary rocks contain movable fluid in the pores. Hydrodynamic effects due to wave-induced oscillatory fluid flow can lead to significant changes of velocities and attenuations of elastic waves in these rocks. In this paper, we consider the influence of a squirt flow (local flow between the pores of different compressibility) on the sonic log response. The calculations are performed using a unified model describing the joint influence of squirt flow and Biot's global flow. The results show that the influence of the squirt flow increases with increase of a signal frequency. This influence is relatively small in the case of the Stoneley wave but it is significant in the case of P and S waves.

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