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    Reverse time migration of prism waves for salt flank delineation

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    segam2013-04142E1.pdf
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    Type
    Conference Paper
    Authors
    Dai, Wei
    Schuster, Gerard T. cc
    KAUST Department
    Center for Subsurface Imaging and Fluid Modeling
    Earth Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2013-08-19
    Online Publication Date
    2013-08-19
    Print Publication Date
    2013-09
    Permanent link to this record
    http://hdl.handle.net/10754/593698
    
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    Abstract
    In this paper, we present a new reverse time migration method for imaging salt flanks with prism wave reflections. It consists of four steps: (1) migrating the seismic data with conventional RTM to give the RTM image; (2) using the RTM image as a reflectivity model to simulate source-side reflections with the Born approximation; (3) zero-lag correlation of the source-side reflection wavefields and receiver-side wavefields to produce the prism wave migration image; and (4) repeating steps 2 and 3 for the receiver-side reflections. An advantage of this method is that there is no need to pick the horizontal reflectors prior to migration of the prism waves. It also separately images the vertical structures at a different step to reduce crosstalk interference. The disadvantage of prism wave migration algorithm is that its computational cost is twice that of conventional RTM. The empirical results with a salt model suggest that prism wave migration can be an effective method for salt flank delineation in the absence of diving waves.
    Citation
    Dai, W., & Schuster, G. T. (2013). Reverse time migration of prism waves for salt flank delineation. SEG Technical Program Expanded Abstracts 2013. doi:10.1190/segam2013-0414.1
    Publisher
    Society of Exploration Geophysicists
    Journal
    SEG Technical Program Expanded Abstracts 2013
    Conference/Event name
    SEG Technical Program Expanded Abstracts 2013
    DOI
    10.1190/segam2013-0414.1
    Additional Links
    http://library.seg.org/doi/abs/10.1190/segam2013-0414.1
    ae974a485f413a2113503eed53cd6c53
    10.1190/segam2013-0414.1
    Scopus Count
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program

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