Local, reservoir-only reflection and transmission responses by target-enclosing extended imaging

Ivan Vasconcelos, Matteo Ravasi, Alexander Kritski, Joost van der Neut, Tianci Cui

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

    Abstract

    The Marchenko redatuming approach reconstructs wavefields at depth that contain not only primary reflections, but also multiply-scattered waves. While such fields in principle contain additional subsurface information, conventional imaging approaches cannot tap into the information encoded in internal multiples in a trivial manner. We discuss a new approach that uses the full information contained in Marchenko-redatumed fields, whose output are local reflection and transmission responses that fully enclose a target volume at depth, without contributions from over- or under-burden structures. To obtain the Target-Enclosing Extended Images (TEEIs) we solve a multi-dimensional deconvolution (MDD) problem that can be severely ill-posed, so we offer stable estimates to the MDD problem that rely on the physics of the Marchenko scheme. We validate our method on ocean-bottom field data from the North Sea. In our field data example, we show that the TEEIs can be used for reservoir-targeted imaging using reflection and, for the first time, local transmission responses, shown to be the direct by-product of using internal multiples in the redatuming scheme. Finally, we present local, TEEI-derived reflection and transmission images of the target volume at depth that are structurally consistent with a benchmark image from conventional migration of surface data.
    Original languageEnglish
    Title of host publicationSEG Technical Program Expanded Abstracts 2017
    Subtitle of host publication24-29 September, Houston, USA
    Pages5289-5293
    DOIs
    Publication statusPublished - 2017
    EventSEG Annual Meeting 2017 - Houston, United States
    Duration: 24 Sep 201729 Sep 2018
    Conference number: 87

    Publication series

    NameSEG Technical Program Expanded Abstracts 2017
    PublisherSEG
    ISSN (Electronic)1949-4645

    Conference

    ConferenceSEG Annual Meeting 2017
    Abbreviated titleSEG 2017
    CountryUnited States
    CityHouston
    Period24/09/1729/09/18

    Keywords

    • nonlinear
    • transmission
    • internal multiples
    • reflection
    • imaging

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