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    Passive seismic imaging at reservoir depths using ambient seismic noise recorded at the Otway CO2 geological storage research facility

    Access Status
    Fulltext not available
    Authors
    Issa, N.
    Lumley, D.
    Pevzner, Roman
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Issa, N. and Lumley, D. and Pevzner, R. 2017. Passive seismic imaging at reservoir depths using ambient seismic noise recorded at the Otway CO2 geological storage research facility. Geophysical Journal International. 209 (3): pp. 1622-1628.
    Source Title
    Geophysical Journal International
    DOI
    10.1093/gji/ggx109
    ISSN
    0956-540X
    School
    Department of Exploration Geophysics
    URI
    http://hdl.handle.net/20.500.11937/60354
    Collection
    • Curtin Research Publications
    Abstract

    We demonstrate rapid convergence ( < 60 min) of passive seismic images down to reservoir depths (~2.0 km) at the CO2CRC Otway CO 2 geological storage research facility, Australia, using ambient seismic noise (ASN) recorded continuously with a buried geophone array. Our passive seismic images are created by applying seismic data processing and interferometry techniques, and show we can recover both surface and body waves from the ambient noise data. Using a recording time interval in which body waves dominate the ASN, we generate passive seismic images that correlate well with the major reflectors imaged by conventional activesource 3-D seismic data at the site. We present a mathematical model for image convergence, where the variance converges inversely proportional to recording time, and show for the first time an excellent agreement between a mathematical model and the observed convergence rate of interferometric images made from ASN.

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