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Keywords: incidence
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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-2021-3583578
..., and capabilities to account for anelastic structure in interpretations of ever improving geophysical data sets. upstream oil & gas inhomogeneity characteristic anelastic media wave incident applied geoscience incidence implication reservoir characterization viscoelastic ray theory attenuation...
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
... and that in the case of instantaneous time-mirror in physical experiment. Finally, we rederive the GLM (Gel’fand-Levitan-Marchenko) equation from the concept of dual solution to understand the theory from different perspective. time-boundary reflection transmission applied geoscience incidence layered media...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3406423
... axis. By treating the mirror image of the borehole source with respect to the reflector plane as a virtual source, the borehole reception problem is equivalent to the response of the borehole to the spherical wave incidence from the virtual source, which can be solved using the cylindrical-wave...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3205546
... ABSTRACT In the study of seismic wave scattering, most of the research is based on the assumption of far-field and plane wave incidence, which is applicable to the far-field case, but cannot describe the near-field seismic wave scattering well. Based on this problem, we propose scattering...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3214849
... are detected, as well as a new earthquake. Presentation Date: Tuesday, September 17, 2019 Session Start Time: 1:50 PM Presentation Time: 3:55 PM Location: 221C Presentation Type: Oral cataloged event earthquake seg international exposition application velocity analysis incidence near-offset...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2986067
... acquiring multicomponent seismic data? To answer the question seismic modeling was conducted that showed the P-wave reflectivity decreasing with increasing angle of incidence (Figure 6). The SS reflectivity decreases with increasing incident angle with a phase change occurring at an angle of 25 degrees...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17073710
... algorithm exxonmobil upstream research company equation upstream oil & gas amplitude compensation correction seg seg international exposition maximum gain sediment travel time incidence Hewitt Dix , C. , 1955 , Seismic velocities from surface measurements : Geophysics , 20...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13831536
... and incidence angle. The frequency dependency is believed to be principally caused by the wave-induced flow of pore fluid at the mesoscopic scale. In recent years, two particular phenomena, partial saturation and soft fractures, have been identified as significant mechanisms of wave induced flow. However...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5849854
... starting mod- els. For a layered medium, near-offset reflections (with zero angle of incidence) are unlikely to be cycle-skipped regard- less of the low-wavenumber velocity error in the initial mod- els. Therefore, we use them as a starting point for FWI, and the subsurface velocity model is then updated...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5844728
... are illustrated in detail. scale fracture reservoir characterization information handong huang reflectivity china university variation incidence fracture coherence fracture prediction p-wave azimuthal anisotropy analysis algorithm azimuth equation fracture density upstream oil & gas...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0507
... reservoir, seismic data with low signal-to-noise ratio often lack the information of large angle of incidence. Therefore, the three-term AVO inversion will not be stable. The main purpose of this study is to help improve the stability of fluid factor inversion for deep reservoir. Under the guidance...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0442
.... elastic impedance data layer property equation fracture-related layer property expression seismic gather reflection coefficient seismic data impedance inversion result media elastic impedance azimuth incidence reservoir characterization upstream oil & gas inversion seg denver 2014...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0723
... characterization incidence burridge fracture matrix method transmission coefficient An alternative to the O Doherty-Anstey approximation in a high-contrast medium Renat Shigapov and Boris Kashtan, Saint Petersburg State University, Alexander Droujinine, Shell Global Solutions International BV, Wim Mulder...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0798
..., to be determined from the data; whereas QEM= ½ is a property of the equation. attenuation frequency strack th annual international meeting thomsen incidence upstream oil & gas interface amplitude reservoir characterization low frequency equation geophysics plane wave seg denver 2014...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0814
... relate to each other and help the interpretation. equation anellipticity variation downton reservoir characterization incidence anisotropy characterization reflectivity property azimuth seg denver 2014 fracture skewness upstream oil & gas expression template orientation inversion...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0012
... are methodologies and process to analyze and process the data in 3 Components. walkaway processing reservoir characterization consistent part sv time surface consistent term direct wave run 1 raw time deconvolution incidence amplitude static correction upstream oil & gas rotation signature...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0393
... of incidence azimuthal amplitudes; 2) the m-s events for most of the frac stages studied showed the NE-SW spatial distribution indicating a NE-SW maximum horizontal stress orientation, consistent with the NE-SW azimuth of VINTfast; 3) at several frac stage centers, the m-s events showed detailed spatial...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0394
... and interpretation should incorporate this fact. The cause of the change of the bright azimuth amplitude with increasing angle of incidence is interpreted to be an effect of the orthorhombic nature of the rocks. Specifically, the relative magnitudes of the VTI and HTI anisotropy, in both the carbonate reservoir...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0587
... Summary The Zoeppritz equations, which describe reflection and transmission of plane waves incident on a single interface, are the basis for traditional AVO (Amplitude Variation with Offset) analysis. While Zoeppritz equations are not suitable extensions required to analyze the reflection...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0916
... discontinuous finite element method upstream oil & gas rayleigh surface wave incidence velocity component surface wave artificial intelligence A new perfectly matched layer (CFS-NPML) in elastic wave modeling with discontinuous Galerkin Finite-element Method Zhao Xue1,2* Xiaobo Li1 Liangguo Dong1...

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