Stabilized unidimensional deconvolution-based imaging conditions in Marchenko imaging

Mayara M. A. Matias, Joost van der Neut, Reynam da C. Pestana

    Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

    Abstract

    Multiple reflections are typically not accounted for in seismic migration processes, which can lead to the emergence of artifacts. In Marchenko imaging, we retrieve the complete up- and downgoing wavefields in the subsurface to construct an image without such artifacts. The quality of this image depends on the type of imaging condition that is applied. In this work, we introduce an imaging condition that is based on stabilized unidimensional deconvolution (SUD). Two specific approaches are considered. In the first approach, we use the full up- and downgoing wavefields for deconvolution. Although this leads to balanced and relatively accurate amplitudes, the crosstalk is not completely removed. The second one is to incorporate the initial focusing function in the deconvolution process, in such a way that the retrieval of crosstalk is avoided. We compare images with the results of the classical cross-correlation imaging condition, which we apply to reverse-time migrated wavefields and to the up- and downgoing wavefields that are retrieved by the Marchenko method
    Original languageEnglish
    Title of host publicationSEG Technical Program Expanded Abstracts 2018
    Subtitle of host publication14-19 October 2018, Anaheim, United States
    Pages4433-4437
    DOIs
    Publication statusPublished - 2018
    EventSEG Annual Meeting 2018 - Anaheim convention Center, Anaheim, United States
    Duration: 14 Oct 201819 Oct 2018
    Conference number: 88
    https://seg.org/Annual-Meeting-2018

    Publication series

    NameSEG Technical Program Expanded Abstracts 2018
    PublisherSEG
    ISSN (Electronic)1949-4645

    Other

    OtherSEG Annual Meeting 2018
    Abbreviated titleSEG 2018
    CountryUnited States
    CityAnaheim
    Period14/10/1819/10/18
    Internet address

    Keywords

    • imaging
    • internal multiples
    • autofocusing

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