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DMO and multiples

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Proceedings Papers

Paper presented at the 1991 SEG Annual Meeting, November 10–14, 1991
Paper Number: SEG-1991-1297
... ABSTRACT No preview is available for this paper. dmo reflection traveltime curve multiple-velocity stack mvs cmp seismogram upstream oil & gas application dip moveout cmp gather constant-offset section conventional stack diffraction wenzel procedure reservoir...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 1992
Paper Number: OTC-6837-MS
... it improves signal-to-noise and increases trace-to-trace coherence, thereby enhancing the effectiveness of downstream pre-stack processes, such as DMO and multiple suppression. Also, it virtually eliminates transient noise and interfering crew noise in marine data. INTRODUCTION The fundamental premise...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-0742
... multiples can be seen when the section is compared to the comnon area in Figure 1. DIP MOVEOUT CORRECTION The migration operation inherent in dip moveout correction ("DMO") has some interesting implications concerning multiple attenuation. This is especially evident when one views DMO correction in terms...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-0731
.... As discussed by Egan et al (1988), the application of Dip Moveout Correction ("DMO") can have both positive and negative effects concerning this problem. It is a common conception that the migration effect inherent in DMO allows for considerable destructive interference of multiples in stack. This is generally...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-1987
... the results of using both the DMO-DMO-1 and Fourier regularization methods in the presence of multiples. The same model was used as in the previous analysis, except here the 10o event and its first two orders of water bottom multiple have been modeled. It is seen that both methods are able to regularize...
Proceedings Papers

Paper presented at the 1994 SEG Annual Meeting, October 23–28, 1994
Paper Number: SEG-1994-0214
... ABSTRACT No preview is available for this paper. dmo geometry throughput single job multiple job channel recording reservoir characterization multiple cpu experiment depth migration sequential implementation application time slice dmo processing upstream oil & gas cpu...
Proceedings Papers

Paper presented at the 1995 SEG Annual Meeting, October 8–13, 1995
Paper Number: SEG-1995-1441
... spatial aliasing, precursor noise, or unbearable distortions of phase and am- plitude. Second, Radon DMO does not require that input traces belong to one offset bin. Input traces can be orga- nized from multiple offset bins in the same azimuth grouping to perform Radon DMO. Third, the DMO-corrected output...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 1998
Paper Number: OTC-8682-MS
... overcomes the spatial aliasing difficulties associated with 3-D marine data. The technique is based in part on a paper by Ronen (1987). He demonstrated that DMO could be used to connect data collected at different offsets with sampling theory to unravel aliasing due to under sampling of the individual...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-3421
... development that is an approximation is DMO. The knowledge of how to implement pre-stack migration existed prior to the development of DMO. But due to limitations in processing capability, DMO was an excellent temporary, approximate solution. land seismic acquisition new era reservoir...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-2064
... wavefield is required. Additional cost savings can be realized by neglecting the DMO operation and using only NMO for offset continuation. This is justified given small offsets, moderate dips, and the dominance of the NMO velocity. input data multiple prediction data pre-summation gather...
Journal Articles
J Pet Technol 50 (01): 40–41.
Paper Number: SPE-0198-0040-JPT
Published: 01 January 1998
... direction wide-tow marine-seismic survey azimuth reflector swath direction opposite sail line adjacent swath amplitude DMO processing G L O B A L S E I S M I C O P E R A T I O N S 40 JANUARY 1998 Wide-tow seismic surveys use multiple streamers dragged behind a boat. The streamers are laterally...
Proceedings Papers

Paper presented at the 1995 SEG Annual Meeting, October 8–13, 1995
Paper Number: SEG-1995-0933
... ABSTRACT No preview is available for this paper. cmp position contribution application mike galbraith geometry upstream oil & gas multiplicity convention dmo infopipe information service seismic image software shot-receiver pair cmp bin position darrell connelly...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 1997
Paper Number: OTC-8317-MS
... on the applicationof DMO techniques. This paper is a continuation of this work. It describes the impact of wide tow marine acquisition on DMO and suggests methods for improvement. Wide towing becomes an issue since seismic data acquired from a single source shooting into a wide cable configuration requires careful...
Proceedings Papers

Paper presented at the 2004 SEG Annual Meeting, October 10–15, 2004
Paper Number: SEG-2004-2001
... at the same location that was modeled separately. It can be seen from figs. 6-7 that our reconstruction technique has cor- rectly positioned primary reflections, although DMO-related artifacts (noise) can be observed. Since DMO is unable to correctly position both primaries and multiples simultane- ously...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, November 21–23, 2005
Paper Number: IPTC-10585-MS
... multiples correctly. In the case of SRWEM, run times could be greatly reduced if multiple shot records could be combined in one "super-shot", thus reducing the total number of shot records. We discuss a DMO-based method for transforming conventional marine data into an equivalent set of data on a finely...
Proceedings Papers

Paper presented at the 2004 SEG Annual Meeting, October 10–15, 2004
Paper Number: SEG-2004-1253
... baumstein multiple-free portion shot gather denver application exposition reconstruction seg int receiver shot record reservoir characterization regularization prediction annual internat field data arrow point october 2004 srme data regularization dmo 3D SRME: data reconstruction...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-2704
... ABSTRACT I propose a shot continuation using a combination of inverse DMO forward DMO in an integral form and make the comparison to differential shot continuation developed by Fomel 2003. Synthetic and real test demonstrate that the proposed method succeeds in structurally complex situations...
Proceedings Papers

Paper presented at the 1994 SEG Annual Meeting, October 23–28, 1994
Paper Number: SEG-1994-1217
... in Figure 1. In the plots that follow, multiple panels generated by Fowler DMO and Stolt migration are displayed with the same gain next to each other in order to compare the quality of the DMO-migration sequence for different pairs of VO) and Figure 2 shows migrated panels for multiple values...
Proceedings Papers

Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-2110
... of the basic autoconvolution method of Anstey and Newman to truly 3D multiples. SEG Int'l Exposition and 72nd Annual Meeting * Salt Lake City, Utah * October 6-11, 2002 Prestack poststack 3D multiple prediction DMO Most data are stacked after preprocessing with some form of dip moveout correction. Since 3D...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 1992
Paper Number: OTC-6826-MS
... times. 3-D DMO, 3-D MZO (migration-to-zem offset) and 3-D pre-stack depth migration are computationally intensive algorithms that easily fit into the paradigm of parallel computation. In this paper, we discuss the implementation of these algorithms on a 128-node parallel computer. Run-time speedups...

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