Elastic full-waveform inversion of transmission data in 2D VTI media

Handle URI:
http://hdl.handle.net/10754/598125
Title:
Elastic full-waveform inversion of transmission data in 2D VTI media
Authors:
Kamath, Nishant; Tsvankin, Ilya
Abstract:
Full-waveform inversion (FWI) has been implemented mostly for isotropic media, with extensions to anisotropic models typically limited to acoustic approximations. Here, we develop elastic FWI for transmitted waves in 2D heterogeneous VTI (transversely isotropic with a vertical symmetry axis) media. The model is parameterized in terms of the P- and S-wave vertical velocities and the P-wave normal-moveout and horizontal velocities. To test the FWI algorithm, we introduce Gaussian anomalies in the Thomsen parameters of a homogeneous VTI medium and perform FWI of transmission data for different configurations of the source and receiver arrays. The inversion results strongly depend on the acquisition geometry and the aperture because of the parameter trade-offs. In contrast to acoustic FWI, the elastic inversion helps constrain the S-wave vertical velocity, which for our model is decoupled from the other parameters.
Citation:
Kamath N, Tsvankin I (2014) Elastic full-waveform inversion of transmission data in 2D VTI media. SEG Technical Program Expanded Abstracts 2014. Available: http://dx.doi.org/10.1190/segam2014-0869.1.
Publisher:
Society of Exploration Geophysicists
Journal:
SEG Technical Program Expanded Abstracts 2014
Issue Date:
5-Aug-2014
DOI:
10.1190/segam2014-0869.1
Type:
Conference Paper
Sponsors:
We are grateful to themembers of the A(nisotropy) and i(maging)teams at CWP and to Gerhard Pratt (University of WesternOntario), Tariq Alkhalifah (KAUST), Daniel Kohn (Universityof Kiel), Ken Matson (Shell), and Jon Sheiman (contractor,Shell), for fruitful discussions. We would also like tothank John Stockwell (CWP) and Paul Martin (Dept. of Mathematics,CSM) for help with mathematical issues. This workwas supported by the Consortium Project on Seismic InverseMethods for Complex Structures at CWP and by the CIMMMProject of the Unconventional Natural Gas Institute at CSM.
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Full metadata record

DC FieldValue Language
dc.contributor.authorKamath, Nishanten
dc.contributor.authorTsvankin, Ilyaen
dc.date.accessioned2016-02-25T13:13:08Zen
dc.date.available2016-02-25T13:13:08Zen
dc.date.issued2014-08-05en
dc.identifier.citationKamath N, Tsvankin I (2014) Elastic full-waveform inversion of transmission data in 2D VTI media. SEG Technical Program Expanded Abstracts 2014. Available: http://dx.doi.org/10.1190/segam2014-0869.1.en
dc.identifier.doi10.1190/segam2014-0869.1en
dc.identifier.urihttp://hdl.handle.net/10754/598125en
dc.description.abstractFull-waveform inversion (FWI) has been implemented mostly for isotropic media, with extensions to anisotropic models typically limited to acoustic approximations. Here, we develop elastic FWI for transmitted waves in 2D heterogeneous VTI (transversely isotropic with a vertical symmetry axis) media. The model is parameterized in terms of the P- and S-wave vertical velocities and the P-wave normal-moveout and horizontal velocities. To test the FWI algorithm, we introduce Gaussian anomalies in the Thomsen parameters of a homogeneous VTI medium and perform FWI of transmission data for different configurations of the source and receiver arrays. The inversion results strongly depend on the acquisition geometry and the aperture because of the parameter trade-offs. In contrast to acoustic FWI, the elastic inversion helps constrain the S-wave vertical velocity, which for our model is decoupled from the other parameters.en
dc.description.sponsorshipWe are grateful to themembers of the A(nisotropy) and i(maging)teams at CWP and to Gerhard Pratt (University of WesternOntario), Tariq Alkhalifah (KAUST), Daniel Kohn (Universityof Kiel), Ken Matson (Shell), and Jon Sheiman (contractor,Shell), for fruitful discussions. We would also like tothank John Stockwell (CWP) and Paul Martin (Dept. of Mathematics,CSM) for help with mathematical issues. This workwas supported by the Consortium Project on Seismic InverseMethods for Complex Structures at CWP and by the CIMMMProject of the Unconventional Natural Gas Institute at CSM.en
dc.publisherSociety of Exploration Geophysicistsen
dc.titleElastic full-waveform inversion of transmission data in 2D VTI mediaen
dc.typeConference Paperen
dc.identifier.journalSEG Technical Program Expanded Abstracts 2014en
dc.contributor.institutionColorado School of Minesen
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