Toward a closed loop from seismic imaging to earth-model building
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Author(s)
Li, Yunyue
Biondi, Biondo
Nichols, Dave
Clapp, Robert
Date Issued
February 2016
Journal
The Leading Edge
Publisher
Society of Exploration Geophysicists
Citation
Li, Yunyue Elita, Biondo Biondi, Dave Nichols, and Robert Clapp. “Toward a Closed Loop from Seismic Imaging to Earth-Model Building.” The Leading Edge 35, no. 2 (February 2016): 135–139.
Version
Final published version
Abstract
Velocity-model building is the first task of seismic inversion and the foundation of the subsequent data-processing workflow. When the earth velocity becomes multivalued with respect to the propagating direction of the waves, velocity-model building becomes severely underdetermined and nonunique. The traditional workflow separates velocity-model building from lithologic inversion, which hampers both processing steps. An integrated model-building scheme is demonstrated to simultaneously consider prestack seismic data and its structural and lithologic inversion results from a previous iteration. The prestack seismic inversion is performed using wave-equation migration velocity analysis (WEMVA) for vertical transverse isotropic (VTI) models. To constrain the seismic inversion, the geologic information is integrated as spatial-model correlations, and the rock-physics information as lithologic-model correlations. This feedback step completes the loop from seismic imaging to lithologic-model building, where previous rock-physics estimations and geologic interpretations can be validated further and updated in order to constrain the next WEMVA iteration. Improvements from the integrated inversion scheme are shown on a Gulf of Mexico field data set.
MIT Department
Massachusetts Institute of Technology. Department of Mathematics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://library.seg.org/doi/pdf/10.1190/tle35020135.1
