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Common-offset migration of DMO-corrected data

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Proceedings Papers

Paper presented at the 1994 SEG Annual Meeting, October 23–28, 1994
Paper Number: SEG-1994-0680
... ABSTRACT No preview is available for this paper. zero-offset migration fourier transform analytically common-offset section operator equation popovici mzo algorithm migration mzo operator dmo stanford university zero-offset section integration boundary reservoir...
Proceedings Papers

Paper presented at the 1987 SEG Annual Meeting, October 11–15, 1987
Paper Number: SEG-1987-0617
... or offset. DMO ANU PRESTACK MIGRATICN Solutions to these problems are well known -- the data must be processed with some form of prestack migration, either partial migration, such as DMO proceesing , or full common-offset migration. The DMO procedure wave-theoretically maps data recorded at each nonzero...
Proceedings Papers

Paper presented at the 1997 SEG Annual Meeting, November 2–7, 1997
Paper Number: SEG-1997-1575
... such methods are DMO-PSI (Gardner s dip moveout followed by prestack imaging) and EOM or equivalent offset migration. Both methods create a superior prestack migration gather that is referred to as a common scatter point gather (CSP), and are formed from input data before NMO. All energy from a scatter point...
Proceedings Papers

Paper presented at the 1984 SEG Annual Meeting, December 2–6, 1984
Paper Number: SEG-1984-0799
... well-populated and well-distributed ensembles (of common offsets, common source-receiver azimuths, etc.) adds to the basic difficulties of handling the daunting quantity of data that 3-D surveys entail, The method discussed below achieves many of the goals of partial migration before stack by forming...
Proceedings Papers

Paper presented at the 1987 SEG Annual Meeting, October 11–15, 1987
Paper Number: SEG-1987-0714
.... These techniques come in various guises and are usually referred to as dip noveout correction, or simply DMO (Hale, 1984). DMO naps prestack data to zero offset and thereby enables data to be stacked properly to common reflection times. lt follows that DMO removes both the dip dependence of stacking velocities...
Proceedings Papers

Paper presented at the 2008 SEG Annual Meeting, November 9–14, 2008
Paper Number: SEG-2008-1308
..., and migration of the data. The results are correlated with three cores that were drilled along the line. Introduction Several common-offset ground-penetrating radar (GPR) profiles were collected at the Norman Landfill in May 2002. The old Norman Landfill lies in an alluvial environment near the Canadian River...
Proceedings Papers

Paper presented at the 1995 SEG Annual Meeting, October 8–13, 1995
Paper Number: SEG-1995-1449
... an alternative definition of AMO. We define AMO as a cascade of 3-D migration (in- version) for particular common-azimuth and common-offset data and 3-D modeling for a different azimuth and offset. This definition resembles the viewpoint on DMO developed by Deregowski and Rocca (1981). As with the DMO case...
Proceedings Papers

Paper presented at the 1991 SEG Annual Meeting, November 10–14, 1991
Paper Number: SEG-1991-1391
.... CONCLUSION With this real data example, we have been able to demonstrate the technique of common-offset pro- cessing by applying f-k filtering, DMO-driven statics, and prestack migration. This offers new oppor- tunities to improve seismic pro- cessing in complex areas which are prone to noise, statics...
Proceedings Papers

Paper presented at the 1996 SEG Annual Meeting, November 10–15, 1996
Paper Number: SEG-1996-1475
... inversion to interval velocities than those obtained after DMO. Prior to the stacking stage in the DZO process, the data are organized in common-offset gathers which are generally well sampled in 2-D and very narrow azimuth 3-D geometries. But some geometries such as irregular 3-D land geometries or wide...
Proceedings Papers

Paper presented at the 1998 SEG Annual Meeting, September 13–18, 1998
Paper Number: SEG-1998-1740
... ABSTRACT No preview is available for this paper. salt body biondi nmo velocity dmo moveout common-offset cube reflection reservoir characterization velocity function migration time slice operator application annual internat nmo-velocity conflict amo constant-velocity dmo...
Proceedings Papers

Paper presented at the 1994 SEG Annual Meeting, October 23–28, 1994
Paper Number: SEG-1994-1549
...) and Offset Continuation to zero offset (DMO). VELOCITY ANALYSIS BY SCO Data interpolation and velocity analysis are two of the most practical applications of the continuation operators. Let us consider the common shot velocity (CSVA) by SCO. A similar approach can be carried out by OCO but we prefer to use...
Proceedings Papers

Paper presented at the 1986 SEG Annual Meeting, November 2–6, 1986
Paper Number: SEG-1986-0319
... ABSTRACT No preview is available for this paper. plane migration velocity field profile migration constant velocity stack prestack migration dmo reservoir characterization velocity analysis moveout operator vertical velocity gradient common-offset section reflector...
Proceedings Papers

Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-0981
... (zero-offset) data. basic imaging problem reservoir characterization shot gather receiver interval zero-offset section partial stack least-square solution least-square dmo imaging problem frequency san antonio continuation seismic survey common-offset section upstream oil & gas...
Proceedings Papers

Paper presented at the 1996 SEG Annual Meeting, November 10–15, 1996
Paper Number: SEG-1996-1118
.... Introduction The DMO techniques (continuation of initial data into zero-offset data) which became customary for everyday processing practice are based on the ap- plication of 2-D data gathers of common offset or common shot. Traditionally, 2-D DMO methods are extended (without essential changes) to 3-D seis...
Proceedings Papers

Paper presented at the 1989 SEG Annual Meeting, October 29–November 2, 1989
Paper Number: SEG-1989-1140
... Dimensions , Geophysics 43, 49- 76. Wiggins, J. W., 1984, Kirchhoff integral extrapolation and migration of nonplanar data , Geophysics 49, X239- 1249. (a) FIG. 1. r o,r,,t g (cl ,lRI Geometrical construction of shot DMO operator from ._ migration ellipse. (a) Migration ellipse, (b) zero offset expen- ment...
Proceedings Papers

Paper presented at the 1990 SEG Annual Meeting, September 23–27, 1990
Paper Number: SEG-1990-1370
... Post-stack migration. which assumes zero-offset data, will be unable to properly image any dipping data which survives the stacking process, as the dipping data are displaced away from the true zero-offset reflection by an amount which depends on the dip and offset. Dip moveout. or DMO, attempts...
Proceedings Papers

Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-0304
... and Annual Meeting * San Antonio, Texas * September 9-14, 2001 Beam migration for 3D AVO analysis Common-offset time migration (COTIM) For the COTIM sequence, we used the preprocessing outputs of the DMO process, and then applied the extended Stolt (zero-offset) migration method on the common-offset data...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-1121
... data to zero offset, The DMO operators for common offset project exactly to the stack plane. The application of these DMO operators in concert results in very visible improvement in the stack section as well as reduced expenditure and time Post stack NM0 is perhaps more novel but is effective. Reduced...
Proceedings Papers

Paper presented at the 1989 SEG Annual Meeting, October 29–November 2, 1989
Paper Number: SEG-1989-1152
... approach, it is possible to derive a constant velocity DMO formula which directly maps raw data to zero offset, while preserving the angular reflection coefficient. This process is termed Born DMO (BDMO). When analytically applied to Kirchhoff-scattered data for a horizontal plane, BDMO yields the correct...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-0969
... in practice and which the com- bination of dip moveout (DMO) and post-stack migration does not adequately address. We examine an approach to PSM which handles all three of the above problems and is computationally effi- cient. The method involves full pre-stack migration on common offset sections using a slow...

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