Quantitative estimation of pressure and saturation changes using 4D seismic -A case study in the marlim field, Brazil

R. C. Sansonowski, C. MacBeth

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The technique of Floricich (2006) is used to estimate pressure and saturation changes from 4D seismic data without the need for rock or fluid physics. This methodology involves a multiple attribute approach in which a sequence of calibration, training and selection produces an optimal combination of the attributes for the final inversion. A Bayesian inversion from the 4D data is then performed taking into account the uncertainties related to the production data and seismic attributes. The methodology is applied to an Oligocene field, offshore Brazil, with encouraging results. Estimates of the amount of injected water in the system between the two vintages are obtained using the saturation maps and the simulation model, and the comparison is used to assess the material balance in the area.

    Original languageEnglish
    Title of host publicationSociety of Petroleum Engineers - 70th European Association of Geoscientists and Engineers Conference and Exhibition - Incorporating SPE EUROPEC 2008
    Pages3827-3831
    Number of pages5
    Volume6
    Publication statusPublished - 2008
    Event70th European Association of Geoscientists and Engineers Conference and Exhibition - Rome, Italy
    Duration: 9 Jun 200812 Jun 2008

    Conference

    Conference70th European Association of Geoscientists and Engineers Conference and Exhibition
    Abbreviated titleSPE EUROPEC 2008
    CountryItaly
    CityRome
    Period9/06/0812/06/08

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