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

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    Access Status
    Open access
    Authors
    Vermeulen, J.
    Gurevich, Boris
    Urosevic, Milovan
    Landa, E.
    Date
    2006
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Vermeulen, J. and Gurevich, B. and Urosevic, M. and Landa, E. 2006. Enhancing coherency analysis for fault detection and mapping using 3D diffraction imaging, in Proceedings of the International Exposition and 76th Annual Meeting, Oct 1-6 2006, pp. 1108-1112. New Orleans, Louisiana: SEG.
    Source Title
    Society of Exploration Geophysicists - SEG International Exposition and 76tth Annual Meeting 2006, SEG 2006
    DOI
    10.1190/1.2369712
    ISBN
    9781604236972
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    Remarks

    Use of this publication is subject to SEG terms of use and conditions at https://seg.org/Terms-of-Use

    URI
    http://hdl.handle.net/20.500.11937/71497
    Collection
    • Curtin Research Publications
    Abstract

    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.

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