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    Application of amplitude thresholding to aid minimum energy adaptive subtraction for multiple attenuation

    Access Status
    Fulltext not available
    Authors
    Wellington, P.
    Hartley, B.
    Kepic, Anton
    Date
    2018
    Type
    Conference Paper
    
    Metadata
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    Citation
    Wellington, P. and Hartley, B. and Kepic, A. 2018. Application of amplitude thresholding to aid minimum energy adaptive subtraction for multiple attenuation, pp. 3635-3638.
    Source Title
    78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
    ISBN
    9781605607856
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/73673
    Collection
    • Curtin Research Publications
    Abstract

    Copyright © (2008) by the Society of Exploration Geophysicists All rights reserved. Model based multiple prediction approaches require an adaptive subtraction step that is able to correct for differences between the real and predicted multiples. The commonly used subtraction process derives shaping operators, in the least squares sense, to minimize the energy difference between the predicted multiples and the field record. Although the minimum energy assumption allows a computationally efficient adaptive subtraction, it can lead to attenuation of primary information. This abstract illustrates how a simple amplitude clipping approach can significantly improve the effectiveness of the least squares adaptive subtraction and minimize primary attenuation.

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