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    An experimental study of low-frequency wave dispersion and attenuation in water saturated sandstone

    189481_62498_An_Experimental_Study_of_low-frequency_wave_dispersion.pdf (677.9Kb)
    Access Status
    Open access
    Authors
    Mikhaltsevitch, Vassili
    Lebedev, Maxim
    Gurevich, Boris
    Date
    2012
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Mikhaltsevitch, V. and Lebedev, M. and Gurevich, B. 2012. An experimental study of low-frequency wave dispersion and attenuation in water saturated sandstone, in Proceedings of the 74th EAGE Conference and Exhibition-Incorporating SPE EUROPEC 2012, Jun 4-7 2012. Copenhagen, Denmark: European Association of Geoscientists & Engineers (EAGE).
    Source Title
    EAGE Conference Proceedings & Exhibitors' Catalogue
    Source Conference
    74th European Association of Geoscientists and Engineers Conference and Exhibition- Incorporating SPE EUROPEC 2012
    Additional URLs
    http://www.earthdoc.org/publication/publicationdetails/?publication=59549
    ISBN
    978-90-73834-27-9
    Remarks

    Copyright © 2012. V. Mikhaltsevitch, M. Lebedev and B. Gurevich

    URI
    http://hdl.handle.net/20.500.11937/37624
    Collection
    • Curtin Research Publications
    Abstract

    A study of the pore fluid effects on the elastic and anelastic properties of sedimentary rocks is important for interpreting seismic data obtained for reservoirs as well as for monitoring the fluid movement during both fluid extraction in producing fields and injection of CO2 for storage purposes. In most sedimentary rocks low intrinsic permeability and, as a consequence, low fluid mobility lead to a situation when relative motion between pore fluid and rock skeleton has significant influence on acoustic wave propagation at seismic frequencies. Therefore, in many cases the experiments conducted only at seismic frequencies are not sufficient to validate commonly used theoretic models of elastic moduli dispersion and attenuation. We present data obtained with a new version of low-frequency laboratory apparatus designed for measurements of Young’s moduli and extensional attenuation of rocks at seismic (1-400 Hz) and teleseismic (≤1Hz) wave frequencies. The apparatus can operate at confining pressures from 0 to 70 MPa. Elastic and anelastic parameters of dry and water-saturated sandstone quarried in Donnybrook, Western Australia, were measured at various confining pressures and room temperature (~20 C). A peak of attenuation in a water-saturated sample with 14.8% porosity and 7.8 mD permeability was found at frequency 0.8 Hz.

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