3D prestack depth migration with compensation for frequency dependent absorption and dispersion

Yi Xie; Kefeng Xin; James Sun; Carl Notfors; Ajoy Kumar Biswal; MK Balasubramaniam

doi:10.1081/22020586.2010.12041885

ISSN: 2202-0586
E-ISSN:

oa 3D prestack depth migration with compensation for frequency dependent absorption and dispersion
Authors Yi Xie^a, Kefeng Xin^b, James Sun^c, Carl Notfors^d, Ajoy Kumar Biswal^e and MK Balasubramaniam^f
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^a CGGVeritas, Singapore, [email protected] ^b CGGVeritas, Singapore, [email protected] ^c CGGVeritas, Singapore, [email protected] ^d CGGVeritas, Singapore, [email protected] ^e Reliance Industries ltd, India, [email protected] ^f Reliance Industries ltd, India, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2010, Issue ASEG2010 - 21st Geophysical Conference, Dec 2010, p. 1 - 4
DOI: https://doi.org/10.1081/22020586.2010.12041885
- Published online: 01 Dec 2010

Abstract

Summary

Spatial variations in the transmission properties of the overburden cause seismic amplitude attenuation, wavelet phase distortion and seismic resolution reduction on deeper horizons. This poses problems for the seismic interpretation, tying of migration images with well-log data and AVO analysis. We developed a prestack depth Q migration approach to compensate for the frequency dependent dissipation effects in the migration process. A 3D tomographic amplitude inversion approach may be used for the estimation of absorption model. Examples show that the method can mitigate these frequency dependent dissipation effects caused by transmission anomalies and should be considered as one of the processes for amplitude preserving processing that is important for AVO analysis when transmission anomalies are present.

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References

Emmanuel Causse, Rune Mittet, and Bjorn Ursin, 1999,Preconditioning of full waveform inversion in viscoacoustic media, Geophysics 64, 130-145.
Henk Keers, Don W. Vasco, and Lane R. Johnson, 2001, Viscoacoutic crosswell imaging using asymptotic waveforms: Geophysics, 66, 861-870.
Rune Mittet, 2007, A simple design procedure for depth extrapolation operators that compensate for absorption and dispersion, Geophysics 72, S105-S112.
Peter Traynin, Jonathan Liu, and J.M. Reily, 2008, Amplitude and bandwidth recovery beneath gas zones using Kirchhoff prestack depth Q-migration: 78th Annual International Meeting, SEG.
Kefeng Xin, Barry Hung, Sergey Birdus and James Sun, 3D tomographic amplitude inversion for compensating amplitude attenuation in the overburden, 78th Annual International Meeting, SEG.
Y. Zhang, M. Karazincir, C. Notfors, J. Sun, and B. Hung, 2002, Amplitude preserving v(z) prestack Kirchhoff migration: Demigration and modeling: 64th Annual International Coference and Exhibition, EAGE, Extended Abstracts, B011.
Hongbo Zhou, Sam Gray, Jerry Young, Don Pham, and Yu Zhang. 2003, Tomographic residual curvature analysis: The process and its components: 73rd Annual International Meeting, SEG, Expanded Abstracts, 666-669.

/content/journals/10.1081/22020586.2010.12041885

Article Type: Research Article

Keyword(s): attenuation; AVO; dispersion; PSDM

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