Digital superresolution in seismic AVO inversion

The sparseness promoted by the total variation norm is utilized to achieve superresolution amplitude-variation-with-offset (AVO) inversion. The total variation norm promotes solutions that have constant values within unspecified regions and thus are well suited for an earth model consisting of layer...

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Bibliographic Details
Published in:The Leading Edge
Main Authors: Kolbjørnsen, Odd, Evensen, Andreas Kjelsrud, Nilsen, Espen Harris, Lie, Jan Erik
Format: Article in Journal/Newspaper
Language:English
Published: Society of Exploration Geophysicists 2019
Subjects:
Barents Sea
Online Access:http://hdl.handle.net/10852/74464
http://urn.nb.no/URN:NBN:no-77569
https://doi.org/10.1190/tle38100791.1
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Summary:The sparseness promoted by the total variation norm is utilized to achieve superresolution amplitude-variation-with-offset (AVO) inversion. The total variation norm promotes solutions that have constant values within unspecified regions and thus are well suited for an earth model consisting of layers bounded by faults and erosion surfaces. Algorithmic developments from digital image and video restoration are utilized to solve the geophysical problem. A spatial point spread function is used to model the resulting effect of wave propagation, migration, and processing. The methodology is compared to current alternatives and discussed in the context of AVO inversion. Good results are obtained in a Barents Sea test case.

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