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Keywords: wave equation
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Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594480
... the interaction of the source with the hard sea-bottom. Previous studies have qualitatively shown the strong energy conversion at the sea-bottom in a shallow water setting. In this study, an analytical solution of the SH wave equation will be utilized to quantify the source impact in shallow waters. Analyses...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3567608
... wavefield attenuation compensation method migrated image wave equation extrapolation operator A stable space-wavenumber attenuation compensation method for viscoacoustic reverse-time migration Jidong Yang, Jianping Huang, Zhenchun Li, China University of Petroleum (East China); Hejun Zhu, Uni...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3584030
.... machine learning upstream oil & gas waveform inversion artificial intelligence wave equation helmholtz equation neural network reservoir characterization source location frequency high-dimensional wavefield solution inversion wavefield application training sample applied geoscience...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594472
... We derived the R/T (reflection/transmission) of time-boundary for the dual fundamental solution of wave equation in layered media. Although dynamically the same, but they are very different kinetically from the case of space-boundary. The reflected wave by time-boundary will propagate...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3581319
... At present, there are mainly two kinds of seismic wave prestack depth migration imaging methods: the integral method based on the high frequency approximation solution of wave equation and the finite difference numerical solution or mixed domain solution based on the differential wave equation...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3581364
... on the Transmitted Wave for simulating wave field propagation as it is based in solving the two-way wave equation. The objective of this In pre-stack depth migration imaging, according to the study is to develop a wave propagation simulation method cross-correlation imaging condition (Claerbout, 1971...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3418614
... The constant Q theory describes in frequency domain that the seismic wave amplitude attenuation linearly increases with respect to frequencies. We present a simple generalized time-domain wave equation to precisely simulate such linear attenuation. The key idea is to represent the wavefield...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428426
... formulation of source radiation pattern in wave equation is not available. We present how source radiation pattern can be formulated in the wave equation for numerical simulation. We expand source radiation pattern into Fourier series with a sum of sine and cosine functions. We then formulate the source...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427351
... Presentation Time: 11:25 AM Location: Poster Station 1 Presentation Type: Poster reservoir characterization upstream oil & gas wave equation machine learning deep learning 82nd annual international conference velocity model neural network constraint wavefield spatial coordinate value...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425406
... We apply Physics Informed Neural Networks (PINNs) to evaulate the scalar wave equation. A PINN is a neural network trained to solve a partial differential equation. The method is mesh-free and consequently can extend to arbitrarily complex computational boundaries with relative ease. We extend...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425618
... imaging condition ray-based kirchhoff migration exploration geophysicist 10 traveltime computation kwett sog ray tracing seg international exposition image stack reservoir characterization wave equation velocity model traveltime map conventional ray-based kirchhoff migration...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426646
... Conventional analysis of amplitude variation with offset for PS reflections is based on analytical reflection coefficients in a layered medium. We develop a least-squares reverse-time migration method for PS reflections based on a quasi-elastic wave equation. The quasi-elastic wave equation can...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426699
... receiver seg international exposition zhu crosstalk attenuation scatterer full-waveform inversion algorithm interaction upstream oil & gas wave equation iteration inversion hessian-based multiparameter Hessian-based multiparameter fractional viscoacoustic full waveform inversion...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426726
... approximation wavefield velocity model seg international exposition upstream oil & gas internal multiple iteration implementation crosstalk reservoir characterization wave equation migration exploration geophysicist 10 reverse time migration reflectivity imaging expanded abstract lsrtm...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426049
... and efficient Q-RTM method, in which a regularization term is introduced into the decoupled constant-Q fractional Laplacians viscoacoustic wave equation, to suppress the high-frequency instabilities during the attenuation compensation. Meanwhile, a Q compensated excitation amplitude image condition is conducted...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3421450
...: Poster reservoir characterization frequency wave equation waveform inversion optimization problem background model source function artificial intelligence objective function efficient wavefield inversion iteration alkhalifah outer iteration seg international exposition upstream oil...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3421468
... an analytical Green’s function solution, the network is trained by fitting the output perturbed Green’s function and its derivatives to the wave equation expressed in terms of the perturbed Green’s function. The derivatives are calculated through the concept of automatic differentiation. In this case...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3413927
... In this work, we present a method that overcomes the propagation angle limitation in the classical parabolic approximation. The key point of the method is to use the idea of the domain decomposition and to approximate the wave equation in every subdomain along a local propagation direction. Thus...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3209086
...:50 PM Presentation Start Time: 2:40 PM Location: 304A Presentation Type: Oral wave equation gsrm elastic anisotropic media stability condition vector reservoir characterization wavefront implementation edge effect real component media anisotropic media pml wave solution...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3211288
.... Presentation Date: Tuesday, September 17, 2019 Session Start Time: 9:20 AM Presentation Time: 9:20 AM Location: Poster Station 13 Presentation Type: Poster seg international exposition alkhalifah perturbation artificial intelligence medium parameter perturbation wave equation parameterization...

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