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Prestack Stolt migration

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Proceedings Papers

Paper presented at the 1987 SEG Annual Meeting, October 11–15, 1987
Paper Number: SEG-1987-0734
... ABSTRACT No preview is available for this paper. western geophysical co correction spectra cmp gather upstream oil & gas prestack stolt migration noise moveout reservoir characterization stolt migration frequency prestack migration conventional prestack stolt migration...
Proceedings Papers

Paper presented at the 2000 SEG Annual Meeting, August 6–11, 2000
Paper Number: SEG-2000-0992
... SUMMARY This paper presents a method of Stolt residual migration applicable to prestack data. The method''s main merit is that instead of requiring an assumption about the magnitude of the new velocity model to which we want to residually migrate, it only calls for an assumption about...
Proceedings Papers

Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-0986
... SUMMARY PS velocity analysis is an important aspect of converted wave seismic imaging. To obtain one consistent image, it is necessary to correctly derive both the P-wave and the S-wave velocity models. Stolt prestack residual migration is a useful technique for velocity analysis and image...
Proceedings Papers

Paper presented at the 1994 SEG Annual Meeting, October 23–28, 1994
Paper Number: SEG-1994-1175
... application of this new 3-D Stolt migration is the computation of constant migration velocity scans. As it is routinely done for 2-D prestack Stolt this multiple-velocity migrations can be used for extracting a time-migrated image and for estimating the velocity function in a dip-independent fashion...
Proceedings Papers

Paper presented at the 1985 SEG Annual Meeting, October 6–10, 1985
Paper Number: SEG-1985-0305
... ABSTRACT No preview is available for this paper. prestack migration graben inversion method geophysics upstream oil & gas stolt data example freedom equation migration procedure clayton imaging basement curvature weglein reservoir characterization fourier transform...
Proceedings Papers

Paper presented at the 1990 SEG Annual Meeting, September 23–27, 1990
Paper Number: SEG-1990-1310
... on the neighboring rids on the input traces. In F-K domain processing, a technique of suppressing spatial aliasmg noise in prestack Stolt F-K migration has been proposed (Li et al., 1987) in which a method of linear-moveout (LMO) coordinate transformation is utilized to reduce xcessive moveout of the events...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-0972
... wave field and the down-going P wave field at each depth and 5. &s&z) = ~s~(w,2,z)P;(w,z,z) . (11) w STOLT w, kh, k MIGRATION In a constant velocity medium, prestack migration can be accomplished by Fourier transformation of the data, Stolt change of variables from w to k, followed by inverse Fourier...
Proceedings Papers

Paper presented at the 1985 SEG Annual Meeting, October 6–10, 1985
Paper Number: SEG-1985-0307
... line constant velocity stack moveout upstream oil & gas prestack migration algorithm Seismic 2 307 Fourier transforming equation (6) over rs anti I, dnd USQ Gauss s theorem. we find (Clayton and Stolt. I98 I j, Ll,(kuk,. Ik: c + k,l) -+ ($k_, -- k,k,) 62 (I;, - k - Iklq + k I 17) Changing...
Proceedings Papers

Paper presented at the 1992 SEG Annual Meeting, October 25–29, 1992
Paper Number: SEG-1992-0913
... velocity is al- lowed, however, to vary in space and migrated time Prestack Stolt migration (Stolt, 1978), for example, can produce migrated images at a sequence of constant velocities, only one of which is chosen (Fowler, 1984; Shurtleff, 1984; Li et al., 1991) to apply at each location on the final...
Proceedings Papers

Paper presented at the 1996 SEG Annual Meeting, November 10–15, 1996
Paper Number: SEG-1996-0443
... ABSTRACT No preview is available for this paper. wavenumber exact reformulation theoretical basis algorithm post stack migration fourier transform stolt eom reservoir characterization migration bancroft upstream oil & gas impulse response prestack migration csp gather...
Proceedings Papers

Paper presented at the 1995 SEG Annual Meeting, October 8–13, 1995
Paper Number: SEG-1995-1433
... time migration. This refinement to DZO may be implemented via either a Stolt stretch type approach or by using a full prestack time migration. For steeply dipping events in extreme vertical velocity varia- tions, this extension further reduces the reflector point dis- persal prior to stacking, thus...
Proceedings Papers

Paper presented at the 2000 SEG Annual Meeting, August 6–11, 2000
Paper Number: SEG-2000-0874
...). Image enhancement by Stolt residual migration Recent studies (Stolt, 1996; Sava, 2000) have shown that Stolt resid- ual migration can be applied in the prestack domain, as a velocity- independent process. Therefore, it can be used as a tool for enhanc- ing image focusing after CAM without making...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-3715
... expensive. Second, if the reference image is incorrectly con- structed, the difference between two images can exceed the small perturbation assumption, which leads to the cycle skip- ping problem. An alternative to this approach, discussed in Sava (2003), uses prestack Stolt migration to construct a lin...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2004
Paper Number: OTC-16944-MS
.... It is possible to extend the Radon multiple model by including apex-shifted parabolas or hyperbolas in the model space. In the first case we call this an "?-Radon transform" since the apex shift is indicated by ??in our notation. In the second approach we call it Stolt-Radon because we use the Stolt migration...
Proceedings Papers

Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-1107
... that although the velocity continuation result could be achieved in principle by using prestack residual migration in Kirchhoff (Etgen, 1990) or f -k (Stolt, 1996) formulation, the first is evidently inferior in efficiency, and the second is not conve- nient for velocity analysis across different offsets...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-2200
... Summary We present a new method for prestack depth migration that is based on the double plane-wave decompositions of the original seismic data along both source and offset directions. Initially the data are slanted-stacked along the offset direction for each shot and then organized...
Proceedings Papers

Paper presented at the 1992 SEG Annual Meeting, October 25–29, 1992
Paper Number: SEG-1992-1038
... MOVEOUT IN F-K PRESTACK MIGRATION I he migration-velocity scan approach to prestack time migra- ;ion and velocity analysis constructs a suite of images by ap plying a very efficient prestack f-k migration method at a range If velocities. The Stolt algorithm for f-k migration begins by Fourier transforming...
Proceedings Papers

Paper presented at the 1987 SEG Annual Meeting, October 11–15, 1987
Paper Number: SEG-1987-0546
..., which is based on the assumption that velocity is constant, has potential shortcomings (Chsmbers et al., 1984). An efficient alternative is the Stolt method for prestack migration (Stolt, 1978). In that approach, a constant-velocity Stolt algorithm is used to migrate the prestack data repeatedly, each...
Proceedings Papers

Paper presented at the 1994 SEG Annual Meeting, October 23–28, 1994
Paper Number: SEG-1994-0688
... ABSTRACT No preview is available for this paper. reservoir characterization equation compensation ander norway fazzari reflector correct compensation correction seismic data upstream oil & gas diffractor migration prestack migration amplitude geophysics reflection...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5900937
.... In order to relax the dependence of SDM on velocity model and forward modeling operator, we allow another redundant degree of dimension to define the extended model space. Prestack time migration and demigration operators are used in the SDM method. Numerical tests on Marmousi model and real data show...

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