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Gap deconvolution

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Proceedings Papers

Paper presented at the 1991 SEG Annual Meeting, November 10–14, 1991
Paper Number: SEG-1991-1346
... ABSTRACT No preview is available for this paper. reflection upstream oil & gas acoustic property operator relation subsurface formulation near-surface region multiple reflection computation one-dimensional example gapped deconvolution deterministic counterpart...
Proceedings Papers

Paper presented at the 2003 SEG Annual Meeting, October 26–31, 2003
Paper Number: SEG-2003-1988
... layer. This paper presents you that the land reverberation sometimes is developed through two cases. The method of predictive deconvolution with variable predictive gap is then propossed to attenuate this kind of reverberation. Tests approved its efficiency. Introduction With about twenty years...
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Hydrophone data predictive <b>gapped</b> <b>deconvolution</b> against surface consistent ...
Published: 01 November 2010
Figure 7 Hydrophone data predictive gapped deconvolution against surface consistent deconvolution More
Proceedings Papers

Paper presented at the 2008 SEG Annual Meeting, November 9–14, 2008
Paper Number: SEG-2008-2507
...) and is complimentary to missing or short shot arrays that are used in current land acquisition systems. Deconvolution operators can now be designed from these improved S/N ratio traces (Figure 3) instead of the noisy input data (Figure 1). The autocorrelations of the traces in Figure 3 are shown in Figure 4 and gapped...
Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-3421
... pre- and post-migration to reduce longer period interbed multiples. Finally, a targeted X-T gapped deconvolution was used to address a remnant peg leg multiple immediately below the strong Base Chalk reflector. Seismic interpretation has benefited considerably from the advances made by the seismic...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, January 19–22, 2014
Paper Number: IPTC-17451-MS
... by energetic interbed multiples generated in the upper unit ( curtain of multiples These multiples often have the same, or higher apparent velocity, than the primaries, offering no opportunity to remove them by move-out discrimination. Similarly, prediction methods (gapped deconvolution) have proved...
Proceedings Papers

Paper presented at the 1992 SEG Annual Meeting, October 25–29, 1992
Paper Number: SEG-1992-0241
... deconvolution gapped deconvolution field signature wavelet Zero Phasing Seismic Data without Wells Offshore West Africa: Reducing Uncertainty and Variability of the Wavelet M. S. Foster*, K. R. Nunn, Sarah A. Lewis, and David .I Reynolds, BP Exploration, England SUMMARY Correctly zero phased data results...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-2807
... by Wiener spiking deconvolution. The first is gapped predictive deconvolution. The second is greatly increasing the so- called white noise level constraint. Figure 3 shows the result of a 16 ms gapped predictive deconvolution (Peacock and Treitel, 1969) applied to the traces in Figure 1. The operator length...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1508
... of the solution. Shot Domain Processing The next stage of signal processing included using a single velocity function to remove spherical divergence for the survey. Water bottom and short period multiples were removed using simple gap deconvolution (Robinson, E.A., and Treitel, S. 1980). The water bottom...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition and Conference, November 1–4, 2010
Paper Number: SPE-137293-MS
...Figure 7 Hydrophone data predictive gapped deconvolution against surface consistent deconvolution ...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-0718
... with some prominent gaps in coverage. Fig. 3b is the stack after surface-consistent decon- volution. The stacks after conventional deconvolution, omitted here to save space, is very similar, with the conventional result having a slight edge. The reason for this appears in Figs. 4a-c where individual CDP...
Proceedings Papers

Paper presented at the 1998 SEG Annual Meeting, September 13–18, 1998
Paper Number: SEG-1998-1142
... ABSTRACT No preview is available for this paper. predictive deconvolution filter objective function trace energy filter coefficient equation reflection coefficient time-varying gap exxon production research company summary polarity reversal random noise multiple suppression...
Proceedings Papers

Paper presented at the 1999 SEG Annual Meeting, October 31–November 5, 1999
Paper Number: SEG-1999-1485
... used in spike deconvolution is displayed in Figure 3. The average post-deconvolution phase difference this contamination causes between the noise free stack and the noise added stack is displayed for varying time windows in Figure 4. If gap deconvolution is substituted for spike deconvolution...
Proceedings Papers

Paper presented at the 1992 SEG Annual Meeting, October 25–29, 1992
Paper Number: SEG-1992-1089
... the section with a F-K demultiple process applied, where the multiples have been substantially attenuated, but not to a satisfactory degree. The use of the F-K demultiple has introduced some noise into parts of the seismic section, Figure 5 shows the section with a post-stack gapped deconvolution. The gap...
Proceedings Papers

Paper presented at the 1996 SEG Annual Meeting, November 10–15, 1996
Paper Number: SEG-1996-0024
... be considered as conventional seismic data. Peg-leg attenuation is usually performed by a gapped deconvolution which consists in computing: k being an operator that can be several samples long computed so that has minimal energy. From we see that where is muted: = (15) This is to be compared with the expression...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition and Conference, November 3–6, 2008
Paper Number: SPE-118282-MS
.... Gapped deconvolution considerations: The preprocessed data used for the PSSP study had de-absorption already applied both in phase and in amplitude, and a surface consistent deconvolution with a 12 ms gap. The 12 ms gap was found to be optimal for the P-wave deconvolution, but it had to be tested whether...
Proceedings Papers

Paper presented at the 1997 SEG Annual Meeting, November 2–7, 1997
Paper Number: SEG-1997-0647
... of the section below Main Unconformity with the dipping Permian Beds terminating against it. c) The latest contractor reprocessing result. The multiple attenuation consisted of Wave Equation Multiple Attenuation, Gapped Deconvolution and Radon Demultiple. The multiple attenuation has improved over the original...
Proceedings Papers

Paper presented at the 1987 SEG Annual Meeting, October 11–15, 1987
Paper Number: SEG-1987-0483
... by exploiting residual NM0 be cause the primary and multiple velocities are so similar. Also, the strong subsurface dips combined with a dipping seafloor decrease the stationarity of the multiples and de- grade the performance of pre-stack gapped deconvolution. Effective multiple prediction requires a more...
Proceedings Papers

Paper presented at the 1990 SEG Annual Meeting, September 23–27, 1990
Paper Number: SEG-1990-1670
... occur within a seismic spread length. INTRODUCTION Water layer multiples are generally the most serious form of noise on marine seismic records. In routine seismic data processing, these are normally attenuated by single trace gapped deconvolution operators estimated with the Wiener- Levinson algorithm...
Proceedings Papers

Paper presented at the 1992 SEG Annual Meeting, October 25–29, 1992
Paper Number: SEG-1992-1165
.... The rationale for this decomposition is that some seismic processes are more effective in the plane wave domain than in the shot or CMP domain. A good example is gapped deconvolution to remove water reverberations. Deconvolution requires successive multiples to be periodic. On real seismic data, however...

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