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    Robust wave equation migration velocity analysis using a normalized differential semblance misfit function

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    Robust Wave Equation Migration Velocity Analysis Using a Normalized Differential Semblance Misfit Function.pdf
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    Description:
    Accepted manuscript
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    Type
    Conference Paper
    Authors
    Alali, A.
    Sun, Bingbing
    Alkhalifah, Tariq Ali cc
    KAUST Department
    Earth Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Seismic Wave Analysis Group
    Date
    2019-08-26
    Permanent link to this record
    http://hdl.handle.net/10754/661843
    
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    Abstract
    The wave equation migration velocity analysis (WEMVA) techniques try to estimate an accurate subsurface velocity model for migration purposes by relying on the full-wave equation. A popular method in WEMVA is the differential semblance optimization (DSO). The objective function of DSO applies a penalty operator to extended subsurface images to minimize the energy residing in the non-physical extension. The penalty operator used in conventional DSO actually tries to reduce the energy instead of focussing it toward the subsurface zero offset. We introduce a normalization term to the DSO method in which we use a pseudo inverse Born operator to calculate the extended image and show that the new objective is more efficient and robust in focusing the energy and eliminating artifacts in the process of estimating the macro-velocity model.
    Citation
    Alali, A., Sun, B., & Alkhalifah, T. (2019). Robust Wave Equation Migration Velocity Analysis Using a Normalized Differential Semblance Misfit Function. 81st EAGE Conference and Exhibition 2019. doi:10.3997/2214-4609.201900643
    Publisher
    EAGE Publications BV
    Conference/Event name
    81st EAGE Conference and Exhibition 2019
    DOI
    10.3997/2214-4609.201900643
    Additional Links
    http://www.earthdoc.org/publication/publicationdetails/?publication=97659
    ae974a485f413a2113503eed53cd6c53
    10.3997/2214-4609.201900643
    Scopus Count
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program

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