On the influence of model parametrization in elastic full waveform tomography

D Köhn, D De Nil, A Kurzmann… - Geophysical Journal …, 2012 - academic.oup.com
SUMMARY Elastic Full Waveform Tomography (FWT) aims to reduce the misfit between
recorded and modelled data, to deduce a very detailed model of elastic material parameters …

Salt structure elastic full waveform inversion based on the multiscale signed envelope

G Chen, W Yang, Y Liu, H Wang… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Building high-fidelity velocity models for salt structures is a valuable and difficult problem in
seismic exploration. Acoustic-based full-waveform inversion (FWI) methods usually produce …

Multiparameter full waveform inversion of multicomponent ocean-bottom-cable data from the Valhall field. Part 1: Imaging compressional wave speed, density and …

V Prieux, R Brossier, S Operto… - Geophysical Journal …, 2013 - academic.oup.com
Multiparameter full waveform inversion (FWI) is a challenging quantitative seismic imaging
method for lithological characterization and reservoir monitoring. The difficulties in …

On the role of density and attenuation in three-dimensional multiparameter viscoacoustic VTI frequency-domain FWI: An OBC case study from the North Sea

S Operto, A Miniussi - Geophysical Journal International, 2018 - academic.oup.com
D frequency-domain full waveform inversion (FWI) is applied on North Sea wide-azimuth
ocean-bottom cable data at low frequencies (≤ 10 Hz) to jointly update vertical wave speed …

Elastic full waveform inversion based on mode decomposition: The approach and mechanism

TF Wang, JB Cheng - Geophysical Journal International, 2017 - academic.oup.com
Elastic full waveform inversion (EFWI) aims to reduce the misfit between recorded and
modelled multicomponent seismic data for deducing a detailed model of elastic parameters …

Deep learning for low-frequency extrapolation of multicomponent data in elastic FWI

H Sun, L Demanet - IEEE Transactions on Geoscience and …, 2021 - ieeexplore.ieee.org
Full-waveform inversion (FWI) strongly depends on an accurate starting model to succeed.
This is particularly true in the elastic regime: The cycle-skipping phenomenon is more …

A hierarchical elastic full-waveform inversion scheme based on wavefield separation and the multistep-length approach

Z Ren, Y Liu - Geophysics, 2016 - pubs.geoscienceworld.org
Elastic full-waveform inversion (FWI) updates model parameters by minimizing the residuals
of the P-and S-wavefields, resulting in more local minima and serious nonlinearity. In …

2D frequency-domain elastic full-waveform inversion using time-domain modeling and a multistep-length gradient approach

K Xu, GA McMechan - Geophysics, 2014 - library.seg.org
To decouple the parameters in elastic full-waveform inversion (FWI), we evaluated a new
multistep-length gradient approach to assign individual weights separately for each …

Elastic full-waveform inversion and parametrization analysis applied to walk-away vertical seismic profile data for unconventional (heavy oil) reservoir characterization

W Pan, KA Innanen, Y Geng - Geophysical Journal International, 2018 - academic.oup.com
Seismic full-waveform inversion (FWI) methods hold strong potential to recover multiple
subsurface elastic properties for hydrocarbon reservoir characterization. Simultaneously …

Elastic Full Waveform Inversion using a Physics guided deep convolutional encoder-decoder

A Dhara, MK Sen - IEEE Transactions on Geoscience and …, 2023 - ieeexplore.ieee.org
Elastic full-waveform inversion (FWI) can construct high-resolution P-wave velocity, S-wave
velocity, and density models in complex geological settings. However, several factors make …