Fault detection using a convolutional neural network trained with point-spread function-convolution-based samples

J **g, Z Yan, Z Zhang, H Gu, B Han - Geophysics, 2023 - library.seg.org
Automatic fault detection in seismic images using deep learning-based methods has
attracted great interest in recent years. Detecting faults by deep learning methods is …

Separation of migration and tomography modes of full‐waveform inversion in the plane wave domain

G Yao, NV da Silva, M Warner… - Journal of Geophysical …, 2018 - Wiley Online Library
Full‐waveform inversion (FWI) includes both migration and tomography modes. The
migration mode acts like a nonlinear least squares migration to map model interfaces with …

An illumination‐compensated Gaussian beam migration for enhancing subsalt imaging

S Liu, Z Yan, W Zhu, B Han, H Gu, S Hu - Geophysical Prospecting, 2021 - earthdoc.org
Seismic images of Earth's subsurface are essential for oil and gas exploration. Gaussian
beam migration is popular for seismic imaging owing to its flexibility and efficiency of …

Elastic full waveform inversion with angle decomposition and wavefield decoupling

J Luo, B Wang, RS Wu, J Gao - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Full waveform inversion (FWI) is a powerful tool to understand the real complicated earth
model. As FWI is a highly nonlinear problem and depends strongly on the initial model, how …

An angle-domain wavenumber filter for multi-scale full-waveform inversion

XB **e - SEG International Exposition and Annual Meeting, 2015 - onepetro.org
The scale length information of velocity perturbations carried by scattered wave is not only
dependent on wave frequency but also related to the scattering angle. We introduce a angle …

Absolute acoustic impedance inversion using convolutional neural networks with transfer learning

S Liu, W Ni, W Fang, L Fu - Geophysics, 2023 - library.seg.org
Acoustic impedance (AI) is a key parameter frequently used for characterizing reservoirs in
the oil and gas industry. The absolute AI can be divided into background and high …

Point‐spread function convolution to simulate prestack depth migrated images: a validation study

K Jensen, I Lecomte, LJ Gelius… - Geophysical …, 2021 - earthdoc.org
Seismic migration commonly yields an incomplete reconstruction of the Earth model due to
restricted survey aperture, band‐limited frequency content and propagation effects. This …

Full-wave seismic illumination and resolution analyses: A Poynting-vector-based method

Z Yan, XB **e - Geophysics, 2016 - library.seg.org
Illumination and resolution analysis provides vital information regarding the response of an
imaging system to subsurface structures. However, generating the resolution function is …

Internal multiple removal and illumination correction for seismic imaging

Z Gu, RS Wu - IEEE Transactions on Geoscience and Remote …, 2021 - ieeexplore.ieee.org
Marchenko equation-based imaging methods have been proved as an effective way to
remove the internal multiples. Conventional Marchenko imaging needs the reflection …

Acquisition aperture correction in the angle domain toward true-reflection reverse time migration

R Yan, H Guan, XB **e, RS Wu - Geophysics, 2014 - library.seg.org
Due to incomplete aperture coverage and complex overburden structures, the migration
process cannot provide a true-amplitude image even though a true-amplitude propagator is …