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Keywords: anisotropic media
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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-2021-3579895
... is to solve pure P- and S-wave written as equation for anisotropic media. Alkhalifah (2000) first proposed the acoustic approximation for TI media by setting D = 2 the S-wave velocity to zero, and derived the acoustic wave 1 + 2 vP20 vS20 (nx2 + ny2 ) + (vP20 vS20 )nz2 equation in TI media. Du et al...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3579781
..., the accuracy of the Gaussian beam migration is controlled by the initial beam width at the surface. In this paper, we extend Nowack (2011)’s method to anisotropic media and present an anisotropic dynamically focused beam migration by modifying the propagator of Gaussian beam. We use anisotropic kinematic...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3579780
... for anisotropic efficient time-domain Gaussian beam migration method for media is proposed. The correctness and applicability of the anisotropic media. The numerical tests on complex structure proposed method are demonstrated by the numerical tests. model show that the proposed method has higher Compared...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3580865
... We propose a deep learning framework to simulate the effect of boundary conditions for wave propagation in anisotropic media. To overcome the challenges associated with stability of conventional implementation of boundary conditions for strongly anisotropic media, we propose an efficient...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3582095
...Reduced Elastic Equations for Efficient Imaging in Anisotropic Media Charlie Jing Zhou, 2006; Du 2008; Duveneck, 2008), which ExxonMobil Upstream Research Company all satisfy the P-wave dispersion equation for pseudo-accoustic VTI, and thus guarantee the Summary correct P-wave kinematics (or P-wave...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583720
... anisotropic media reservoir characterization wavefield pseudo-pure-qp-wave equation operator media upstream oil & gas equation university anisotropy calgary separated scalar qp-wave vti medium first-order qp-wave propagator A first-order qP-wave propagator in 2D VTI media He Liu...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3584082
... gypsum-salt rock reservoir characterization case study anisotropic media sichuan basin depth migration velocity modeling strata salt rock equation High-precision velocity modeling of subsalt structures and TTI anisotropic prestack depth migration technology: A case study of gypsum salt rock...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3581829
... waves (P-waves). In this study I define a coupled system of quasi qS V - and qP-wave radiation in a vertical plane by combining radial-horizontal and vertical sources for anisotropic media. Radiated wavefields at group velocity polar angles complement each other, and after four-component (4C) source...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3399390
...: 361A Presentation Type: Oral radiation pattern full-waveform inversion fwi anisotropic media parameter trade-off geophysics perturbation tsvankin upstream oil & gas colorado school seg international exposition sensitivity analysis reservoir characterization fréchet derivative...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3399830
... anisotropic media upstream oil & gas kinematic double couple geophysics dip slip hydraulic fracturing mechanism focal mechanism grechka clvd focal region anisotropy DC or not DC? Vladimir Grechka (Borehole Seismic) Summary duced by hydraulic fracturing are real or the result of erroneous...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3410414
... The generalized stiffness reduction method (GSRM) was previously proposed to absorb the artificial reflections in seismic wave modeling in arbitrary elastic anisotropic media. However, the traditional PML technique and the original GSRM lose their effectiveness of removing the artificial edge...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3424753
... anisotropic media artificial intelligence triclinic media exploration geophysicist 10 background medium transmission coefficient approximation matrix media interface equation Reflection and transmission coefficient approximations for arbitrarily anisotropic media Song Jin* and Alexey Stovas...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427291
... Location: Poster Station 8 Presentation Type: Poster seismic data application anisotropy correction reservoir characterization hti media seg international exposition anisotropic media sichuan basin exploration geophysicist 10 correction upstream oil & gas geophysics velocity analysis...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427110
..., October 13, 2020 Session Start Time: 8:30 AM Presentation Time: 10:10 AM Location: 351D Presentation Type: Oral reservoir characterization gaiser geophysical consulting summary exploration geophysicist 10 s-wave radiation anisotropic media radiation azimuthal illumination seg...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427764
..., the full grid is partitioned into two subdomains that represent the acoustic and elastic anisotropic media. We use a split-node approach to distribute grid points at the fluid/solid interface, and implement one-sided MFD operators to satisfy both the wave equation and the boundary conditions. Numerical...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426612
... geophysicist 10 anisotropic media equation variation formalism reflection coefficient media upstream oil & gas anisotropic parameter seg international exposition tsvankin anisotropy AVOA modeling for fracture-induced anisotropy based on the elastic impedance formalism Antonio Fuggi...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3421349
... international exposition fracture properties media reservoir characterization exploration geophysicist 10 s-wave radiation anisotropic media gaiser geophysical consulting summary-wave Modeling the effect of fracture density and saturation on S-wave radiation from vertical sources James Gaiser*, Gaiser...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3209086
... isotropic media. But the qSV wavefronts in anisotropic media may present severe instability of the PML because of triplications or cusps. In this paper, we give examples showing the failures of the PML in frequency-domain seismic wave modelling and how serious the problem can be. Our results demonstrate...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3214496
... reservoir characterization group velocity xgboost anisotropic elastic medium phase angle symmetry axis artificial intelligence seismic data thomsen seg international exposition prediction mallick traveltime derivative anisotropic media geophysics upstream oil & gas group angle...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216779
... ABSTRACT At the last SEG meeting we presented the Eigenray method for finding stationary traveltime ray trajectories in 3D smooth heterogeneous anisotropic media, by applying a non-linear finite element scheme. We applied the Newton method that requires both gradient and Hessian...

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