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Keywords: divergence
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Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428150
... distribution. Such network is designed to solve a variational optimization problem based on the Kullback-Leibler divergence between the posterior and the network output distributions. This work is fundamentally rooted in recent developments for invertible networks. Special invertible architectures, besides...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3206719
... classification upstream oil & gas separation vsp data divergence reconstruction method gan neural network operator machine learning artificial intelligence adversarial network conditional generative adversarial network shot gather reservoir characterization geophysics waveform synthetic data...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997672
...-resistivity mode in the frequency-domain ground-airborne electromagnetic method can't meet the requirements of high-precision and rapid imaging. Therefore, we proposed a new tensor-tipper real induction vector divergence detection method to improve the detection precision of 3D target with two orthogonal...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5897161
... to a fast wave mode separation. When compared with divergence and curl operators, projection directions implied by our operators are closer to exact polarization vectors. As a result, better suppressions of crosstalk energy leakage are achieved. Synthetic results validate the effectiveness and efficiency...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0492
... Summary We propose a new fast coherence method of for robust and efficient estimation of 3-D seismic data in which the measure is characterized by greatly increasing the computation efficiency and stability via information divergence and called information divergence coherence algorithm (IDCA...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0159
... Summary For elastic reverse-time migration, images with clear physical meanings can be obtained by applying crosscorrelation-based imaging conditions to the separated wave modes of the source and receiver wavefields. The P- and S-wave components can be obtained by applying divergence and curl...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-0304
... divergence consistency avo inversion amplitude avo characteristic pilot shot non-pilot shot tfcomp upstream oil & gas absorption compensation practical land data equation information compensation attenuation compensate main menu time-frequency domain reservoir...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-2135
...Wave equation based separation of P- and S-wave modes Jun-wei Huang* and Bernd Milkereit, Physics department, University of Toronto, Toronto M5S1A7, ON, Canada Summary Inspired by full wavefield 3-D elastic modeling, a new approach for P- and S-wave separation is developed based on the divergence...
Proceedings Papers

Paper presented at the 2003 SEG Annual Meeting, October 26–31, 2003
Paper Number: SEG-2003-1715
... reservoir characterization karst fracture lineament curvature texas coherence structure detection divergence Karst related vertical collapse structure and related lineament detection by seismic attributes on Fort Worth basin seismic data volume Srinivasa Prasad Jyosyula*, Kurt J. Marfurt and E...
Proceedings Papers

Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-1468
... heritage. cross-hole survey matrix exposition stiff clay seg int characterisation orvieto hill formation clay formation velocity value range upstream oil & gas wave cross-hole survey reservoir characterization geophone wave survey tomography pozzolana divergence salt lake city...
Proceedings Papers

Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-1945
... and fluid content of the target. We conclude that, for simple salt sheets, processing flows that pay sufficient attention to divergence and attenuation corrections will give good results. For more complex salt geometries, 3D true-amplitude ray-trace modeling is required to obtain seismic amplitude...
Proceedings Papers

Paper presented at the 2000 SEG Annual Meeting, August 6–11, 2000
Paper Number: SEG-2000-0025
... problems. The receiver geometry also lends itself to estimating near-surface properties. In our strategy statics corrections separate from wavefield separation which can be approached using these estimates. INTRODUCTION For isotropic homogeneous media the divergence and curl of a wavefield corresponds...
Proceedings Papers

Paper presented at the 2000 SEG Annual Meeting, August 6–11, 2000
Paper Number: SEG-2000-0553
..., divergence, and hummockiness. Like most seismic attributes, these have limited utility taken separately. However, when combined according to seismic stratigraphic principles, they will produce seismic facies classes with stratigraphic significance. Introduction Automatic seismic facies analysis...
Proceedings Papers

Paper presented at the 2000 SEG Annual Meeting, August 6–11, 2000
Paper Number: SEG-2000-0582
... of the downgoing wave at the top of salt I found that the reflection from the target horizon decreased the amplitude by 17% of the two-way overall amplitude loss from the top of salt to the target horizon. attenuation water bottom pegleg transmission transmission loss seismogram divergence simulation...
Proceedings Papers

Paper presented at the 1998 SEG Annual Meeting, September 13–18, 1998
Paper Number: SEG-1998-0385
... ABSTRACT No preview is available for this paper. incidence reflectivity information correction 0 impedance gain function acoustic impedance divergence proper amplitude recovery transmission reservoir characterization correction factor reflection transmission loss upstream...
Proceedings Papers

Paper presented at the 1989 SEG Annual Meeting, October 29–November 2, 1989
Paper Number: SEG-1989-1308
... divergence upstream oil & gas vector application Seismic Processing 8: Seismic Wave Fields Thursday Morning Deterministic and Stochastic Separation of P and SV- Waves: A Comparison Reynam C. Pestana, PPPG/UFBA; Fernando M. Roxo da Mota, Petrobras, Brazil; Tad .I. Ulrych, University of British...
Proceedings Papers

Paper presented at the 1989 SEG Annual Meeting, October 29–November 2, 1989
Paper Number: SEG-1989-0898
... difference modeling wavenumber seismogram tomography tuesday morning correlation length divergence Seismic Inversion 1: Tomography Tuesday Morning Effects of Stochastic Heterogeneities on Cross-Well Imaging E. E. Charrette and M. Nafi ToksBz, M.I.7: SUMMARY Most studies in seismic imaging have...
Proceedings Papers

Paper presented at the 1989 SEG Annual Meeting, October 29–November 2, 1989
Paper Number: SEG-1989-0977
... ABSTRACT No preview is available for this paper. joe deilinger separation operator geophysics divergence separation dimension left half stanford university wavetype separation operator upstream oil & gas symmetry reservoir characterization transverse isotropic...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-0222
... ABSTRACT No preview is available for this paper. current divergence edwards dimensional tabular inhomogeneity saturation geophysics induction new model em response electromagnetic response equation modeling electric field reservoir characterization slingram system host...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-0034
... ABSTRACT No preview is available for this paper. basalt reservoir characterization reverberation divergence velocity filter velocity structure seismic reflection volcanic rock surface layer university common-source gather conversion amplitude vsp data reflection boundary...

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