Imaging complexity in the Earth - Case studies with optimised ray tomography

Zhijiang Luo; John Brittan; Edward Lewis

doi:10.1071/ASEG2015ab269

24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery

ISSN: 2202-0586
E-ISSN:

oa Imaging complexity in the Earth - Case studies with optimised ray tomography
Authors Zhijiang Luo^a, John Brittan^b and Edward Lewis^c
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^a ION Geophysical, 2105 CityWest Blvd. Suite 900 Houston, TX, 77042-2837, [email protected] ^b ION Geophysical, Integra House, Vicarage Rd Egham, UK, TW20-9JZ, [email protected] ^c ION Geophysical, 578-586 Murray Street West Perth, WA, 6005, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2015, Issue 24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery, Dec 2015, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2015ab269
- Published online: 01 Dec 2015

Abstract

In the past 10 years, the resolution of tomographic solutions has seen a continuous increase because of evolving sophistication in methodologies and technology. A vital issue in the data domain is accuracy and density of residual move-out picks that are used to derive tomographic velocity-model updates. A new automated method allows for precise tracking of accurate residual move-out on pre-stack depth-migrated gathers and consequently the fast determination of dense, high quality travel time residuals for seismic tomography. The determination of small-scale anomalies ultimately leads to flatter pre-stack depth-migrated gathers and consequently better-focused structural images.

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2015-12-01

2026-01-15

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References

Brittan, J., and J. Yuan, 2005, Dense multi-offset reflection tomography: 75th Annual International Meeting, SEG, Expanded Abstracts, 2534-2537, http://dx.doi.org/10.1190/1.2148239.
Clapp, R. G., B. L. Biondi, and J. F. Claerbout, 2004, Incorporating geologic information into reflection tomography: Geophysics, 69, no. 2, 533-546, http://dx.doi.org/10.1190/1.1707073.
Jones, I. F., 2003, A review of 3-D preSDM model building techniques: First Break, 21, no. 3, 45-58.
Li, Y., W. Han, C.-S. Chen, and T. Huang, 2012, Velocity model building for tilted orthorhombic depth imaging: 82nd Annual International Meeting, SEG, Expanded Abstracts, http://dx.doi.org/10.1190/segam2012-1231.1.
Stork, C., 1992, Reflection tomography in the postmigrated domain: Geophysics, 57, no. 5, 680-692, http://dx.doi.org/10.1190/1.1443282.
Woodward, M. J., D. Nichols, O. Zhdraveva, P. Whitfield, and T.Johns, 2008, A decade of tomography: Geophysics, 73, no. 5, VE5-VE11, http://dx.doi.org/10.1190 /1.2969907.

/content/journals/10.1071/ASEG2015ab269

Article Type: Research Article

Keyword(s): Move-out; Ray; Residual; Seismic; Tomography

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oa Imaging complexity in the Earth - Case studies with optimised ray tomography

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