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Keywords: evanescent wave
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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-2021-3580633
... generalised framework exploration geophysicist 10 van der neut function retrieval upstream oil & gas wavefield full wavefield marchenko wapenaar function leon diekmann applied geoscience geophysics evanescent wave homogeneous green reservoir characterization vasconcelo...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3581188
... Marchenko redatuming, imaging, monitoring and multiple elimination methods are based on Green’s function representations, with the underlying assumption that the wave field in the subsurface can be decomposed into downgoing and upgoing waves and that evanescent waves can be neglected...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17633779
... operator seg seg international exposition approximation operator explicit additive pseudospectral scheme upstream oil & gas wave equation evanescent wave continuation Explicit additive pseudospectral schemes of wavefield continuation with high-order approximation Alexander L...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13821285
...- gration this angle depends on the velocity field. Unfortunately, when the original FFD method is applied in the presence of sharp discontinuities in the velocity model, it can generate nu- merical instability (Biondi, 2002). The reason is its incorrect treatment of evanescent waves, caused by the real...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5906160
... oil & gas heterogeneous acoustic media kouri weglein perturbation media evanescent wave reservoir characterization geophysics modeling wave modeling renormalization lse lippmann-schwinger equation Scattering theory and Volterra renormalization for wave modeling in heterogeneous...
Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-4057
... shift method for the evanescent waves and using random/reflecting boundary condition during wave propagation. This reduces or eliminates the need for disk I/O such that 3-D SMVA is possible on an industrial scale. wavefield migration depth slice reservoir characterization seg seg denver 2010...
Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-3323
... extrapolation algorithm introduced in Sandberg and Beylkin (2009). The method in Sandberg and Beylkin (2009) uses spectral projector as a way to suppress the evanescent waves without modifying the propagating waves. By using spectral projectors, the depth extrapolation scheme propagates both up and downgoing...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-2403
... equation. This method improves the inaccuracy and instabilities due to evanescent waves and produce high quality imagens of complex media with fewer numerical artifacts than those obtained with a real Padé aproximantion of the exponential operator. Tests on zero-offset salt data from the SEG/EAEG show...

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