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    Integrated rock physics models for improved 4D seismic monitoring of CO2 sequestration in Otway Basin, Australia

    132547_12106_035EAGEWismanUrosevicDance.pdf (402.1Kb)
    Access Status
    Open access
    Authors
    Wisman, Putri
    Urosevic, Milovan
    Dance, T.
    Date
    2009
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Wisman, Putri and Urosevic, Milovan and Dance, T. 2009. Integrated rock physics models for improved 4D seismic monitoring of CO2 sequestration in Otway Basin, Australia, in EAGE Publications (ed), 71st EAGE Conference & Exhibition, Jun 8 2009. Amsterdam: EAGE.
    Source Title
    EAGE Programme & Catalogue
    Source Conference
    71st EAGE Conference & Exhibition
    ISBN
    9789073781672
    Faculty
    Department of Exploration Geophysics
    Faculty of Science and Engineering
    WA School of Mines
    URI
    http://hdl.handle.net/20.500.11937/20359
    Collection
    • Curtin Research Publications
    Abstract

    We build a detailed rock physics model that links the rock and fluid properties with seismic properties and accounts for variations in reservoir quality, fluid saturations, and seismic resolution. This approach will increase the accuracy of the predicted changes in elastic properties of the reservoir rock by calibration of the down-hole petrophysical log with core sample data and ultrasonic measurements. The results indicate that Vp core saturated provide good agreement with Vp log measurement when the “effective” Kgrain is applied. Results also suggest that “effective” Kgrain may be used to represent the average mineralogy of the grains. A comparative analysis has also been performed incorporating the petrographic descriptions and geochemical analysis. The expected mineralogy derived from “effective” Kgrain and petrographic analyses are very close further confirming the model. This type of detailed rock physics analysis provides the capability to forecast more accurately the changes in the 4D seismic response during long-term CO2 storage at the site, and could be a useful tool for future storage sites with similarly challenging geophysical monitoring objectives.

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