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DMO (dip moveout) processing

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Proceedings Papers

Paper presented at the 1991 SEG Annual Meeting, November 10–14, 1991
Paper Number: SEG-1991-1181
... oil field research dmo moveout velocity reservoir characterization dmo algorithm Dip Moveout in Vertically Varying Media Dean Witte, Chevron Oil Field Research Summary Conventional constant velocity dip moveout is inadequate for processing reflections from steeply dipping and overtumed...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 1986
Paper Number: OTC-5158-MS
... into a new cube by processing the constant-offset sections one by one. equation imaging fourier transform dip moveoutand prestack imaging arrival time upstream oil & gas replacement curve root-mean-square velocity operation dip moveout moveout reservoir characterization intercept dmo...
Proceedings Papers

Paper presented at the 1994 SEG Annual Meeting, October 23–28, 1994
Paper Number: SEG-1994-1221
... dmo houston alfonso gonzales coherency maximum coherency algorithm transverse isotropy Effect of transverse isotropy on dip-moveout processing Kathy K. Roldan*, AGL,University of Houston; Alfonso Gonzales, Western Geophysical; and Dan A. Ebrom, AGL, University of Houston SM2.5 SUMMARY...
Proceedings Papers

Paper presented at the 1983 SEG Annual Meeting, September 11–15, 1983
Paper Number: SEG-1983-0271
... ABSTRACT No preview is available for this paper. fault plane processing sequence reflector dip bandwidth migration equation seismogram correction pseudoinverse normal moveout dmo transformation subsurface ray upstream oil & gas reflection fourier transform geophysics...
Proceedings Papers

Paper presented at the 1991 SEG Annual Meeting, November 10–14, 1991
Paper Number: SEG-1991-1208
... dipping reflections is quite accurate and allows processing of overturned dips. Introduction Dip-moveout (DMO), also referred to as pre- stack partial migration, is a process for improving the quality of zero-offset time traces recorded with surface seismic surveys. A 2-D method in the case of constant...
Proceedings Papers

Paper presented at the 1994 SEG Annual Meeting, October 23–28, 1994
Paper Number: SEG-1994-1213
...(Thomsen, 1986). Here we show that that the traditional Conventional dip-moveout (DMO) processing is designed processing sequence of NM0 followed by isotropic DMO is for isotropic media and cannot handle angle-dependent ve- also valid for elliptically anisotropic data. However, Paper I locity. We show...
Proceedings Papers

Paper presented at the 1994 SEG Annual Meeting, October 23–28, 1994
Paper Number: SEG-1994-1529
... ABSTRACT No preview is available for this paper. operator amplitude correction reflector seimsic processing 4 dmo method weighting scheme depth-variable velocity spherical divergence expl dmo operator dmo process correction factor dip moveout reservoir characterization...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 27–30, 1987
Paper Number: OTC-5379-MS
... ABSTRACT Dip moveout (DMO) provides a straightforward way to convert irregular three-dimensional data into regularly spaced offset-versus-time panels at regularly spaced spatial grid points without using any velocity information. An extension of this procedure is described which creates...
Proceedings Papers

Paper presented at the 2000 SEG Annual Meeting, August 6–11, 2000
Paper Number: SEG-2000-2245
... and anellipticity h allows better result than Alkhalifah’s VTI NMO. The DMO operator derived from the anelliptic shifted hyperbola equation fits thoroughly to the monotonous part of Alkhalifah VTI DMO operators. This anelliptic dip moveout depends on effective h only. The outstanding effective h values seem...
Proceedings Papers

Paper presented at the 1995 SEG Annual Meeting, October 8–13, 1995
Paper Number: SEG-1995-0731
...- strate the distortions in the DMO signature caused by the anisotropy. The models correspond to the same = 0.2: = 0.1, = -0.071 (black); = 0.2, = 0 (gray); = 0.3, = 0.071 (dashed). The parameters VO) and are sufficient to perform all time-related processing steps, such as NM0 correction, dip-moveout (DMO...
Proceedings Papers

Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-1879
... behavior of the media (Thomsen, 1986; Alkhalifah and Tsvankin, 1995). If ray bending modifies hyperbolic seismic signatures such as moveout and Kirchhoff time-migration, the anisotropy effects cover all focusing processes, including DMO and velocity estimation. The transversely isotropic media...
Proceedings Papers

Paper presented at the 1992 SEG Annual Meeting, October 25–29, 1992
Paper Number: SEG-1992-0979
... with a ~(2) DMO process (black), and after DMO correction with a constant-velocity DMO process (dotted). (b) Residual moveout At at offset X = 3000 m as a function of reflector dip for the same shale-limestone data uncorrected (gray), DMO corrected with W(Z) DMO (black), and DMO corrected with constant...
Proceedings Papers

Paper presented at the 1986 SEG Annual Meeting, November 2–6, 1986
Paper Number: SEG-1986-0317
... be combined with the different steps of the process, can be adapted to the severity of the vertical velocity gradient in terms of processing cost and accuracy using conventional soft- ware for dip moveout (DMO), normal moveout (NMO), and zero-offset migration (ZOM). Properties of the common-offset imaging...
Proceedings Papers

Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-1851
... Summary Converted wave (C-wave) dip moveout (DMO) is one of the main procedures for multi-component seismic data processing. In this work, we derive a C-wave DMO formula based upon a second-order approximate trajectory equation of conversion-points, and further propose a fast algorithm...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-0742
... that significant strides were made in multiple rejection. Some old ideas (namely moveout correction and prediction deconvolution) were made considerably more effective by some new innovations (flexible velocity filtering and dip- dependent processing). DMO correction and dip-dependent deconvolution were seen...
Proceedings Papers

Paper presented at the 1995 SEG Annual Meeting, October 8–13, 1995
Paper Number: SEG-1995-0348
... the moveout sensitivity to velocity. As a result, I modify the NMO velocity equation to accommodate the application of the DMO operation, which here is based on the assumption of a homogeneous, isotropic medium. 350 Anisotropy processing 4 Analysis of dip moveout and time-migration impulse re- sponses shows...
Journal Articles
J Pet Technol 50 (01): 40–41.
Paper Number: SPE-0198-0040-JPT
Published: 01 January 1998
... the performance of wave- equation-based processes, such as dip moveout (DMO) and migration. The com- bination of normal moveout (NMO) and stack is a more robust process than the wave-equation methods for studying the effect of irregular geometry. Prestack migra- tion applied to data with insufficient azimuthal...
Proceedings Papers

Paper presented at the 1991 SEG Annual Meeting, November 10–14, 1991
Paper Number: SEG-1991-1215
... suitable for parallel processing. INTRODUCTION Both FK dip moveout (DMO) and FK migration algorithms treat all dipping events equally and properly in amplrtude and phase. Figure 1 shows the impulse responses after applying Hale s FK DMO to unit snikes. If we stack the impulse response along slanted...
Proceedings Papers

Paper presented at the 1998 SEG Annual Meeting, September 13–18, 1998
Paper Number: SEG-1998-1740
... fault-plane reflection dip moveout geophy upstream oil & gas Azimuth moveout vs. dip moveout in inhomogeneous media Biondo Biondi, Stanford University SUMMARY Dip moveout (DMO) is often applied to prestack data to better pre- serve dipping events when performing partial stacks over ranges...
Proceedings Papers

Paper presented at the 1991 SEG Annual Meeting, November 10–14, 1991
Paper Number: SEG-1991-1191
... ABSTRACT No preview is available for this paper. correction knowledge mode-converted wave dip moveout gardner constant-velocity medium true zero-offset reflection time seismic migration 4 reflection point dmo normal wave equation upstream oil & gas transformation...

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