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Finite-difference migration

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Proceedings Papers

Paper presented at the 1990 SEG Annual Meeting, September 23–27, 1990
Paper Number: SEG-1990-1374
... ABSTRACT No preview is available for this paper. phase shift migration reservoir characterization difference migration residual migration residual frequency space velocity field fx migration upstream oil & gas frequency space finite difference migration complex structural...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13821285
...Optimization of the parameters in Complex Pade´ Fourier Finite-Difference migration Marco Salcedo,Ame´lia Novais, Jo¨rg Schleicher, UNICAMP & INCT-GP; and Jesse´ C. Costa, UFPA & INCT-GP SUMMARY Complex-Pade´ Fourier finite difference (CPFFD) migration is a one-way wave-equation technique...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0452
... by solving a linear discrete inverse problem. We perform least squares migration using efficient Fourier Finite-difference modeling and migration operators and test Pre-stack Least-Squares Fourier Finite-difference Migration (LSPFFDM) method via the Marmousi velocity model, and we use the gradient-descent...
Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-3288
... difference migration international meeting 75th annual international meeting media migration expansion coefficient tti media annual international meeting attenuation reservoir characterization anisotropic parameter implementation equation tti dispersion relation equation implicit finite...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-2290
... INTRODUCTION SUMMARY I develop an implicit finite-difference migration algorithm for tilted transversely isotropic(TTI) media. I approximate the dispersion relation of TTI media with a rational function series, whose coefficients are estimated by least-squares optimization. The dispersion...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-2412
... characterization geophysics efficiency interpolation fourier finite-difference migration two-way splitting ffd method wavenumber domain two-way splitting technique computational cost chinese academy relative error wavefield interpolation ADI plus interpolation on 3D Fourier finite-difference...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-2367
... ABSTRACT I develop an implicit finite-difference migration method for vertical transversely isotropic (VTI) media with laterally varying anisotropy parameters. I approximate the dispersion relation of VTI media with a rational function series, the coefficients of which are estimated by least...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-1858
... ABSTRACT We apply a globally optimized Fourier finite-difference operator to offset-domain wave-equation migration. Each single-square-root term in the double-square-root equation is approximated by a split-step Fourier operator coupled with an optimized finite-difference operator...
Proceedings Papers

Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-1212
... formula type 3 reservoir characterization acquisition geometry velocity model approximation amplitude-preserving finite-difference migration Amplitude-preserving finite-difference migration based on a least-squares formulation in the frequency domain René-Edouard Plessix and Wim Mulder, Shell...
Proceedings Papers

Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-1103
.... Migration based on a finite difference scheme for the two-way wave equation does not suffer from these drawbacks but the computational cost is very high. However, if the wave equation is solved in the frequency domain, the computational cost of the finite difference scheme is proportional to the number...
Proceedings Papers

Paper presented at the 2000 SEG Annual Meeting, August 6–11, 2000
Paper Number: SEG-2000-0802
... migration method maximum dip angle square-root operator coefficient operator approximation globally optimized fourier fehler huang lateral velocity contrast los alamo optimized value equation dip angle impulse response Globally optimized Fourier finite-difference migration method Lian-Jie...
Proceedings Papers

Paper presented at the 1998 SEG Annual Meeting, September 13–18, 1998
Paper Number: SEG-1998-1823
... transversely isotropic media equation upstream oil & gas azimuthally anisotropic media dietrich ristow 3-D finite difference migration in azimuthally anisotropic media Dietrich Ristow, GEOMAR Research Center of Kiel University, Germany SUMMARY A 3-D implicit finite-difference depth migration scheme...
Proceedings Papers

Paper presented at the 1997 SEG Annual Meeting, November 2–7, 1997
Paper Number: SEG-1997-1422
... ABSTRACT No preview is available for this paper. rtm algorithm geophysics fraction depth migration time step reservoir characterization equation migration boundary condition imaging reflection finite-difference migration implementation rtm image upstream oil & gas...
Proceedings Papers

Paper presented at the 1996 SEG Annual Meeting, November 10–15, 1996
Paper Number: SEG-1996-0471
... characterization migration angle ristow optimized coefficient circular symmetry splitting dispersion maximum migration angle MIG 3.2 Reducing anisotropy and frequency dispersion by 3-D Fourier finite-difference migrat ion Dietrich Ristow* and Thomas Geomar Research Center, Kiel, Germany S u m m a r y...
Proceedings Papers

Paper presented at the 1995 SEG Annual Meeting, October 8–13, 1995
Paper Number: SEG-1995-1220
... ABSTRACT No preview is available for this paper. operator variation migration multiway-splitting dietrich ristow implicit finite-difference migration equation downward continuation upstream oil & gas taylor expansion circular symmetry optimization problem reservoir...
Proceedings Papers

Paper presented at the 1992 SEG Annual Meeting, October 25–29, 1992
Paper Number: SEG-1992-0962
... ABSTRACT No preview is available for this paper. annual international seg meeting mzo finite-difference mzo algorithm velocity variation colorado school correction finite-difference migration upstream oil & gas seismic data migration reservoir characterization...
Proceedings Papers

Paper presented at the 1989 SEG Annual Meeting, October 29–November 2, 1989
Paper Number: SEG-1989-1164
... ABSTRACT No preview is available for this paper. wavelet prediction reservoir characterization equation algorithm claerbout finite-difference migration frequency dispersion geophysics seismic processing 3 frequency dispersion globally dispersion optimally parameterized...
Proceedings Papers

Paper presented at the 1986 SEG Annual Meeting, November 2–6, 1986
Paper Number: SEG-1986-0440
... finite-difference migration extrapolation step size processor unknown velocity diagonal migration depth analysis 440 Seismic 7 depth analysis and unknown velocities). Normal incidence ray tracing from the base of each layer provides the traveltimes re- quired. The complete migration procedure...
Proceedings Papers

Paper presented at the 1985 SEG Annual Meeting, October 6–10, 1985
Paper Number: SEG-1985-0421
.... Schneider, J., Krey, Th., and Hubral, P., 1984, A new method for com- puting true amplitude sections: Presented at the 54th Annual SEG Meeting, Atlanta. A Fast 70 Degree Finite-Difference Migration Algorithm A. W. Pieprzak, Digital Exploration Ltd., England S8.7 A fast high quality time migration after...
Proceedings Papers

Paper presented at the 1984 SEG Annual Meeting, December 2–6, 1984
Paper Number: SEG-1984-0454
... of wide marine seismic source arrays: Presented at the Offshore Tech. Confer.. Houston. Newman, P.. 1984. Seismic response to seafloor diff ractions: First Break, 2. Choice of Scheme and Parameters for s5.7 Optimal Finite-Difference Migration in 2-D J. P, Diet. C.G.G.; and P. Lailly, Itwtitut Fsaq~rris du...

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