Deep learning for multidimensional seismic impedance inversion

X Wu, S Yan, Z Bi, S Zhang, H Si - Geophysics, 2021 - library.seg.org
Deep-learning (DL) methods have shown promising performance in predicting acoustic
impedance from seismic data that is typically considered as an ill-posed problem for …

Nonlinear multichannel impedance inversion by total-variation regularization

A Gholami - Geophysics, 2015 - library.seg.org
The analysis of acoustic impedance (AI) allows for the mapping of seismic reflection data to
lithology, and hence it plays an important role in the interpretation of poststack seismic data …

Simultaneous multitrace impedance inversion with transform-domain sparsity promotion

S Yuan, S Wang, C Luo, Y He - Geophysics, 2015 - library.seg.org
The impedance inversion technique plays a crucial role in seismic reservoir properties
prediction. However, most existing impedance inversion methods often suffer from spatial …

Impedance inversion by using the low-frequency full-waveform inversion result as an a priori model

S Yuan, S Wang, Y Luo, W Wei, G Wang - Geophysics, 2019 - library.seg.org
Prestack acoustic full-waveform inversion (FWI) can provide long-wavelength components of
the P-wave velocity by using low frequencies and long-offset direct/diving/refracted waves …

A fast and automatic sparse deconvolution in the presence of outliers

A Gholami, MD Sacchi - IEEE Transactions on geoscience and …, 2012 - ieeexplore.ieee.org
We present an efficient deconvolution method to retrieve sparse reflectivity series from
seismic data in the presence of additive Gaussian and non-Gaussian noise. The problem is …

Seismic acoustic impedance inversion via optimization-inspired semisupervised deep learning

H Chen, J Gao, W Zhang, P Yang - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Seismic acoustic impedance inversion (SAII) aims at recovering the subsurface impedance
to achieve lithology interpretation. However, its ill-posedness and nonlinearity pose a great …

Data and model dual-driven seismic deconvolution via error-constrained joint sparse representation

Y Wang, G Zhang, T Chen, Y Liu, B Shen, J Liang… - Geophysics, 2023 - library.seg.org
Deconvolution is an essential step in seismic data processing. Sparse-spike deconvolution
often is used to enhance the resolution of the seismic image by adding a model-driven …

The use of low frequencies in a full‐waveform inversion and impedance inversion land seismic case study

G Baeten, JW de Maag, RE Plessix… - Geophysical …, 2013 - earthdoc.org
Velocity model building and impedance inversion generally suffer from a lack of
intermediate wavenumber content in seismic data. Intermediate wavenumbers may be …

Spectral sparse Bayesian learning reflectivity inversion

S Yuan, S Wang - Geophysical Prospecting, 2013 - earthdoc.org
ABSTRACT A spectral sparse Bayesian learning reflectivity inversion method, combining
spectral reflectivity inversion with sparse Bayesian learning, is presented in this paper. The …

Least-squares reverse time migration with a multiplicative Cauchy constraint

G Yao, B Wu, NV da Silva, HA Debens, D Wu, J Cao - Geophysics, 2022 - library.seg.org
One of reverse time migration's main limitations is that an unscaled adjoint operator is prone
to produce images with low resolution, inaccurate amplitudes, and even artifacts. Least …