Estimating velocity and Q by fractional Laplacian constant-Q wave equation-based full-waveform inversion
- Hanming Chen (China University of Petroleum–Beijing) | Hui Zhou (China University of Petroleum–Beijing)
- Document ID
- Society of Exploration Geophysicists
- 2017 SEG International Exposition and Annual Meeting, 24-29 September, Houston, Texas
- Publication Date
- Document Type
- Conference Paper
- 2017. Society of Exploration Geophysicists
- Inversion, Full-waveform inversion, Attenuation
- 0 in the last 30 days
- 10 since 2007
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We propose to estimate velocity and seismic quality factor (Q) by using a time-domain viscoacoustic full waveform inversion (FWI) method. A newly developed fractional Laplacian constant-Q (CQ) wave equation is used as the forward modeling kernel in FWI. The adjoint operator and gradients for updating velocity and Q are derived in this abstract. We adopt a convolution-based objective function to remove the source wavelet effect on inversion result, thus we do not need to know the exact source wavelet or estimate the source wavelet before implementing FWI in our method. To improve computational efficiency of our viscoacoustic FWI, we apply the plane-wave inversion scheme to reduce the amount of data to invert. A synthetic data example using the Marmousi model verifies that our method can rebuild both velocity and Q models with a high resolution.
Presentation Date: Wednesday, September 27, 2017
Start Time: 9:45 AM
Location: Exhibit Hall C/D
Presentation Type: POSTER
|File Size||1 MB||Number of Pages||6|
Bai,J.,D.Yingst,R.Bloor, andJ.Leveille,2014,Viscoacoustic waveform inversion of velocity structures in the time domain:Geophysics,79, no.3,R103–R119,10.1190/geo2013-0030.1.
Chen,H.,H.Zhou, andS.Qu,2014,Low-rank approximation for time domain viscoacoustic wave equation with spatially varying order fractional Laplacians:84th Annual International Meeting, SEG, Expanded Abstracts,3400–3445,10.1190/segam2014-0055.1.
Chen,H.,H.Zhou,Q.Li, andY.Wang,2016,Two efficient modeling schemes for fractional Laplacian viscoacoustic wave equation:Geophysics,81, no.5,T233–T249,10.1190/geo2015-0660.1.
Choi,Y., andT.Alkhalifah,2011,Source-independent time-domain waveform inversion using convolved wavefields: Application to the encoded multisource waveform inversion:Geophysics,76, no.5,R125–R134,10.1190/geo2010-0210.1.
Fomel,S.,L.Ying, andX.Song,2013,Seismic wave extrapolation using low-rank symbol approximation:Geophysical Prospecting,61,526–536,10.1111/j.1365-2478.2012.01064.x.
Kjartansson,E.,1979,ConstantQ-wave propagation and attenuation:Journal of Geophysical Research,84,4737–4748,10.1029/jb084ib09p04737.
Operto,S.,Y.Gholami,V.Prieux,A.Ribodetti,R.Brossier,L.Metivier, andJ.Virieux,2013,A guided tour of multiparameter full-waveform inversion with multicomponent data: From theory to practice:The Leading Edge,32,1040–1054,10.1190/tle32091040.1.
Sun,J.,S.Fomel, andT.Zhu,2014,Viscoacoustic modeling and imaging using low-rank approximation:84th Annual International Meeting, SEG, Expanded Abstracts,3997–4002,10.1190/segam2014-1596.1.
Sun,J.,T.Zhu, andS.Fomel,2015,Viscoacoustic modeling and imaging using low-rank approximation:Geophysics,80, no.5,A103–A108,10.1190/geo2015-0083.1.
Sun,J.,S.Fomel,T.Zhu, andJ.Hu,2016,Q-compensated least-squares reverse-time migration using low-rank one-step wave extrapolation:Geophysics,81, no.4,S271–S279,10.1190/geo2015-0520.1.
Vigh,D., andE. W.Starr,2008,3D prestack plane-wave full-waveform inversion:Geophysics,73, no.5,VE135–VE144,10.1190/1.2952623.
Virieux,J., andS.Operto,2009,An overview of full-waveform inversion in exploration geophysics:Geophysics,74, no.6,WCC1–WCC26,10.1190/1.3238367.
Xue,Z., andH.Zhu,2015,Full waveform inversion with sparsity constraint in seislet domain:85th Annual International Meeting, SEG, Expanded Abstracts,1382–1386,10.1190/segam2015-5932019.1.
Xue,Z.,T.Zhu,S.Fomel, andJ.Sun,2016,Q-compensated full waveform inversion using constant-Qwave equation:86th Annual International Meeting, SEG, Expanded Abstracts,1063–1068,10.1190/segam2016-13949307.1.
Xue,Z.,Y.Chen,S.Fomel, andJ.Sun,2016,Seismic imaging of incomplete data and simultaneous-source data using least-squares reverse time migration with shaping regularization:Geophysics,81, no.1,S11–S20,10.1190/geo2014-0524.1.
Zhang,Q.,H.Zhou,Q.Li,H.Chen, andJ.Wang,2016,Robust source-independent elastic full-waveform inversion in the time domain:Geophysics,81, no.3,R13–R28,10.1190/geo2015-0073.1.
Zhu,T.,J. M.Carcione, andJ. M.Harris,2013,Approximating constant-Qseismic propagation in the time domain:Geophysical Prospecting,61,931–940,10.1111/1365-2478.12044.
Zhu,T., andJ. M.Harris,2014,Modeling acoustic wave propagation in heterogeneous attenuating media using decoupled fractional Laplacians:Geophysics,79, no.3,T105–T116,10.1190/geo2013-0245.1.