Fault shadow distortions on 3D seismic data and their removal by depth processing.

Sergey Birdus; Alexey Artyomov

doi:10.1081/22020586.2010.12041843

ISSN: 2202-0586
E-ISSN:

oa Fault shadow distortions on 3D seismic data and their removal by depth processing.
Authors Sergey Birdus^a and Alexey Artyomov^b
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^a CGGVeritas, [email protected] ^b CGGVeritas, [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/10.1081/22020586.2010.12041843
- Published online: 01 Dec 2010

Abstract

Summary

We noticed during depth processing on real seismic data with fault shadows that:

- Appearance of fault shadows and the convergence speed of the tomographic inversion depend on the acquisition direction;

- Tomographic depth-velocity modelling usually produces models that closely follow geology; but sometimes the models contain odd looking nongeological anomalies; in both cases the depth migration delivers distortion free seismic images;

- Anisotropy in faulted areas creates additional image distortions.

To examine these effects and optimize our depthprocessing workflow, we created several synthetic seismic datasets for different types of velocity anomalies associated with faults in isotropic and anisotropic media and different acquisition directions.

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2010-12-01

2026-01-25

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References

Birdus S., 2007, Removing fault shadow distortions by Fault Constrained Tomography. 77th Meeting, SEG, San Antonio, Expanded Abstracts, 3039-3043.
Zhou H., Gray S.H.. Young J., Pham D., Zhang Y., 2003. Tomographic Residual Curvature Analysis: 73rd Annual International Meeting, SEG, Extended Abstracts, 666-669.

/content/journals/10.1081/22020586.2010.12041843

Article Type: Research Article

Keyword(s): depth imaging; fault; velocity modelling

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oa Fault shadow distortions on 3D seismic data and their removal by depth processing.

Abstract

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