Full Wavefield Migration: a closed-loop imaging approach including all multiple scattering.

    Research output: Chapter in Book/Conference proceedings/Edited volumeChapterScientific

    Abstract

    Multiple scattering is usually ignored in migration algorithms, while it is a genuine part of the physical reflection response. When properly included, multiples can add to the illumination of the subsurface, while their cross-talk effects are removed. Therefore, we introduce full wavefield migration (FWM). It includes all multiples and transmission effects in deriving an image via an inversion approach. Since it tries to minimise the misfit between modelled and observed data, it may be considered as a full waveform inversion process. However, FWM involves a forward modelling process that use the estimated seismic image (i.e. the reflectivities) to generate the modelled full wavefield response, while a smooth migration velocity model can be used to describe the propagation effects. By this separation, a more linear inversion
    problem is obtained. Moreover, during the forward modelling the wavefields are
    computed separately in the incident and scattered directions, which allows the implementation of various imaging conditions, such as imaging reflectors from below - and avoids low-frequency image artifacts, such as typically observed during reverse-time migration. Based on various numerical data examples for the 2D and 3D case the advantages of this methodology are demonstrated.
    Original languageEnglish
    Title of host publicationDelphi; The Multiple Estimation and Structural Imaging Project (2015)
    Subtitle of host publicationFrom seismic measurements to rock and pore parameters
    Place of PublicationDelft
    PublisherDelft University of Technology
    Pages83-106
    VolumeXXVII
    ISBN (Print)978-90-73817-64-7
    Publication statusPublished - Jan 2016

    Keywords

    • Full wavefield migration, closed loop approach

    Fingerprint Dive into the research topics of 'Full Wavefield Migration: a closed-loop imaging approach including all multiple scattering.'. Together they form a unique fingerprint.

    Cite this