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Keywords: vti 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-2021-3593872
...Anisotropic parameters estimation for VTI media based on first-arrival stereotomography Hao Sun*, Kai Yang and Tao Shu, Tongji University, State Key Laboratory of Marine Geology Summary by alkhalifah (2000). The two-step inversion strategy obtained good inversion results. Gu et al. (2019) proposed...
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
...Pure qP-wave equation in VTI media based on approximate method of completing the square Kai Liang1*, Shangrao Sun1, Danping Cao1, Xingyao Yin1 1.School of Geosciences, China University of Petroleum (East China) Summary scheme, which introduces rotated staggered grid (RSG) The elastic 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-2021-3580136
...Source-independent time-lapse full-waveform inversion for VTI media Yanhua Liu* and Ilya Tsvankin, Center for Wave Phenomena, Colorado School of Mines SUMMARY to large percentage errors in the estimated time-lapse parame- ter variations. Time-lapse full-waveform inversion (TLFWI) can provide high...
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
... results. Many authors have proposed to separate qP-waves from elastic waves for better imaging results. As an alternative approach, in this study, we develop a first-order wave propagator of pseudo-pure-qP-wave in 2D heterogeneous VTI media using a staggered-grid scheme. We have performed this algorithm...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425140
... In this paper, we derived the explicit formulas for the sensitivity kernels for elastic VTI media in terms of practical inversion parameters. Analytical solutions are given for homogeneous isotropic elastic media and the properties of the kernels are discussed. We present an efficient approach...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427595
... pseudospectral method bulletin transversely isotropic media vti media extrapolation method innanen seg international exposition media reservoir characterization simulation geophysics reverse time migration seg technical program seismological society © 2020 Society of Exploration Geophysicists...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427830
... upstream oil & gas skolkovo institute saudi arabia government convolution reservoir characterization approximation wavefield aramco research center media vti media seg international exposition fourier window aramco innovation llc modeling exploration geophysicist 10 pseudodifferential...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3213959
... tomography inversion vector method seg 10 anisotropic tomography method seg international exposition anisotropic parameter vti media geophysics inversion angle range information Cai , J. X. , H. Z. Wang , J. Chen ,, et al. , 2017 . Traveltime tomography in the image...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215621
... is preconditioned by an image guided smoothing filter thus the resolution of the slope tomography is significantly improved. In this abstract, we further extend it to vertical tilted anisotropic (VTI) media. Like its isotropic counterpart, the presented anisotropic slope tomography work-flow also have two features...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215897
... ABSTRACT Full waveform inversion (FWI) with acoustic approximation for VTI media have been performed with different modeling techniques. The decomposed equation with mono-component has an advantages of computational efficiency and no S-wave artifact in terms of forward modeling. However...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215883
... picking can take up a significant amount of time to process anisotropic seismic data. Here we develop a velocity-independent Hough transform neural network based technique for normal moveout correction in VTI media. This technique offers advantages when compared to the time and computational costs...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215669
... perturbation sensitive kernel media joint inversion anisotropic parameter seg international exposition quasi-acoustic eikonal equation data component traveltime upstream oil & gas inversion geophysics vti quasi-acoustic eikonal equation vti media reservoir characterization stereotomography...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216028
... waveform inversion inversion stiffness constant seg international exposition wavefield full waveform inversion inversion result derivative wavefield geophysics vti media alkhalifah upstream oil & gas media partial derivative crosstalk perturbation parameterization hierarchical...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215965
... ABSTRACT In the presence of surface topography, we implement fast sweeping method to calculate the P-wave first-arrival traveltimes for the acoustic eikonal equation in attenuating vertical transversely isotropic (VTI) media. We transform the topography-dependent attenuating acoustic...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215308
.... Reflection waveform inversion (RWI) can help us build a background model by minimizing the reflection data residuals. Thus, we apply RWI to acoustic VTI media. According to the radiation patterns analysis, the acoustic VTI media should be described by a combination of the normal-moveout (NMO) velocity...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215280
..., an undesired SV-wave energy could be generated during modeling and reverse time migration. To avoid this unwanted energy, we proposed an approximation of decoupled P- and SV-wave equation system for vertical transversely isotropic (VTI) media. The qPand qSV-phase velocities for the approximated equations...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2986180
... vti media imaging isotropic method migration method rtm method rtm imaging qp wave migration time migration angle-stack reverse time migration reverse time migration qsv wave noise reservoir characterization equation upstream oil & gas imaging result seg international...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2992555
...Misfit sensitivity and traveltime inversion kernels in elastic VTI media Houzhu Zhang, Yang Zhao, Hyoungsu Baek, Aramco Services Company: Aramco Research Center Houston. Hongwei Liu, EXPEC Advanced Research Center, Saudi Aramco Abstract Finite frequency model inversion offers higher accuracy than...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2996524
... ABSTRACT The core issue of first-arrival traveltime tomography in three-dimensional VTI media is the establishment of anisotropic parameter sensitive kernel functions and the processing of large-scale data. In this paper, based on the spherical harmonic expansion group slowness, the sensitive...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997831
... ABSTRACT In this study, a frequency-domain elastic full waveform inversion algorithm for 2-D VTI media has been developed. The forward problem used in this inversion algorithm is simulated by applying frequency domain finite difference method, which is a fast approach for multisource and multi...

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