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3-D DMO processing

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Proceedings Papers

Paper presented at the 1994 SEG Annual Meeting, October 23–28, 1994
Paper Number: SEG-1994-0214
... 3-D DMO processing has become a routine procedure in the seismic processing industry. Depending on the shoot- ing geometry, it can be compute- or I/O- intensive, so issues of parallelism need to be addressed for throughput improve- ment. Parallel 3-D DMO is difficult to implement because the output...
Proceedings Papers

Paper presented at the 1992 SEG Annual Meeting, October 25–29, 1992
Paper Number: SEG-1992-0330
...- The large size of modern seismic surveys creates a po- m for massively parallel computers. Our algorithm can be tential I/O problem for 3-D DMO on high-speed computers. applied to process large 3-D seismic surveys because it mini- On the Connection Machines, the problem can be tackled mizes l/O overhead...
Proceedings Papers

Paper presented at the 1990 SEG Annual Meeting, September 23–27, 1990
Paper Number: SEG-1990-1597
... the user processing parameters. set up important In particular, the trace amplitude as a function of source, receiver and offset can be viewed on the workstation. scaling Necessary trace editing and mainframe information are passed to the computer for further data processing. 3-D DMO AND MIGRATION For 3-D...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 1989
Paper Number: OTC-5940-MS
..., shallow-draft seismic source vessels, and receiver swath survey methods have been used to gather data accurately and efficiently. Processing steps such as 3-D residual statics, dip move-out (DMO), and steep dip migration have been used to produce highly resolved images of the subsurface. The fields...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-1987
... followed by DMO-1 although it can be performed in one step (AMO) as originally described by Biondi et al. (1998). The input data must be NMO corrected. Note that the regularization is not a single-trace 1987SEG/San Antonio 2007 Annual Meeting Data regularization for 3-D SRME: A comparison of methods...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 1992
Paper Number: OTC-6826-MS
..., on the The migration process is usually paralleli.zed in two ways. order of 250,000 km of 60-fold, 12.5 m bin data can be run First, the range of output traces is divided among a certain through 3-D DMO per month. 25,000 to 50,000 km per number of nodes. As input data are read, traces are month can be run through 3-D...
Proceedings Papers

Paper presented at the 1995 SEG Annual Meeting, October 8–13, 1995
Paper Number: SEG-1995-0933
... beasley reservoir characterization 3-D design with DMO modeling SAl.2 Darrell Connelly, Infopipe Information Services; and Mike Galbraith, Seismic Image Software Summary The seismic industry applies dip moveout (DMO) processing increasingly often to correct for the up-dip reflection point smear...
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-1989-1148
... impulse response procedure efficiency deregowski upstream oil & gas Some Practical Aspects of 3-D DMO Kevin M. Barry and Radivoj M. Drecun, Teledyne Exploration SP 2.5 SUMMARY In the dip-moveout (DMO) processing of seismic data using the integral method, it is possible to modify the way...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-0049
.... These two dips direction were chosen because they have gained some popularity in industry studies and should illuminate the main aspects of DMO in 3-D. INTRODUCTION Processingof seismicdata hrough DMO (Dip Moveout) has become the industry standard. 2-D applications of the process have...
Proceedings Papers

Paper presented at the 1997 SEG Annual Meeting, November 2–7, 1997
Paper Number: SEG-1997-1119
... the source and receiver and then place it in the desired output 3-D volume along the trajectory between the source and receiver. Most of the literature concerning the design of such operators has addressed issues surrounding the first step in the process, i.e., generation of the 2-D DMO operator...
Proceedings Papers

Paper presented at the 1992 SEG Annual Meeting, October 25–29, 1992
Paper Number: SEG-1992-0970
... for both flat and dipping events, can be applied to any 2-D or 3-D DMO algorithm, and is compu- tationally efficient. Irregular Spatial Sampling Mathematical derivations of DMO algorithms generally assume that physical quantities such as time source-receiver midpoint, azimuth, and offset are continuous...
Proceedings Papers

Paper presented at the 1994 SEG Annual Meeting, October 23–28, 1994
Paper Number: SEG-1994-1529
...- ing between the reflectors. Figure 3 shows the same section as of the 3-D cube as Figure 2, but the DMO process now involves the two correction factors for spherical spreading and triangle width. The AVO effect along the horizontal reflector as well as the dipping ones is restored and the relative...
Proceedings Papers

Paper presented at the 1996 SEG Annual Meeting, November 10–15, 1996
Paper Number: SEG-1996-0451
... dmo correction processing sequence prestack time migration technique prestack time migration gardner MIG 2.5 Quick-Look 3-D Prestack Time Migration RalfFerber*, Bjørn Sanders, and Oz Yilmaz, Geco-Prakla Summary A major product of 3-D seismic data processing is the time migrated data cube...
Proceedings Papers

Paper presented at the 1989 SEG Annual Meeting, October 29–November 2, 1989
Paper Number: SEG-1989-1144
..., common-azimuth set of traces, Deviation from uniformity leads to artifacts similar to those caused by missing traces in post-stack migration. Despite the fact that many 3-D geometries do not satisfy these assumptions, good stacked sections are often produced by DMO because of the attenuation of artifacts...
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 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-1113
.... Moreover, phase errors in the form of operator-aliasing noise (which can be easily avoided in the f-k domain) can become a problem in z-t DMO unless special effort is taken. For 3-D DMO and prestack processes such as AVO analysis, such errors can become a concern. Here, we describe a method for deriving z...
Proceedings Papers

Paper presented at the 1995 SEG Annual Meeting, October 8–13, 1995
Paper Number: SEG-1995-0743
... geometry irregularities. REFERENCES Beasley, C., and Klotz, R., 1992. Equalization of DMO for irregular spatial sampling. SEG annual meeting, New Orleans. Ronen, S., Sorin, V., and Bale, R., 1991. Spatial dealiasing of 3-D seismic reflection data. Geophysi- cal Journal International 105,503-5 11. Fig. 2...
Proceedings Papers

Paper presented at the 1993 SEG Annual Meeting, September 26–30, 1993
Paper Number: SEG-1993-0544
...). Prestack, poststack, 2-D, and 3-D processes all are affected. Phase and amplitude distortions and coherent and random noise are introduced as a result of applying algorithms that assume regular spatial sampling to data not regularly sampled in offset, common midpoint (CMP), and azimuth. For the case of DMO...
Proceedings Papers

Paper presented at the 1994 SEG Annual Meeting, October 23–28, 1994
Paper Number: SEG-1994-1629
... oil & gas beasley dmo coherent noise seismic data acquisition azimuth Special Session 3: Seismic Data Acquisition and Processing in Mountainous Thrust Areas Thursday morning, October 27th 3-D acquisition realities and processing strategies in mountainous thrust areas Scott MacKay*, Stuart...

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