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    Enhancing coherency analysis for fault detection and mapping using 3D diffraction imaging

    Access Status
    Fulltext not available
    Authors
    Vermeulen, J.
    Gurevich, Boris
    Urosevic, Milovan
    Landa, E.
    Date
    2018
    Type
    Conference Paper
    
    Metadata
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    Abstract

    © 1996-2018 Society of Exploration Geophysicists. All rights reserved. Automatic detection of geological discontinuities such as small throw faults, and pinch-outs is an important problem in the interpretation of 3D seismic data. This is commonly done using coherency analysis. However coherency may be affected by noise, which may create false anomalies. We propose a new interpretation workflow for the detection and mapping of faults, which enhances the coherency-type analysis with identification and detection of diffractions produced by the discontinuities. The algorithm utilizes migrated and unmigrated stacked seismic volumes and the cube of stacking (NMO) velocities. Tests on a simple 2.5 D model show that the method is capable in detecting and mapping of faults below seismic resolution.

    Citation
    Vermeulen, J. and Gurevich, B. and Urosevic, M. and Landa, E. 2018. Enhancing coherency analysis for fault detection and mapping using 3D diffraction imaging, pp. 1108-1112.
    Source Title
    Society of Exploration Geophysicists - SEG International Exposition and 76tth Annual Meeting 2006, SEG 2006
    ISBN
    9781604236972
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/71497
    Collection
    • Curtin Research Publications

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