Velocity-less imaging of linearly inhomogeneous media in 3D

Andrej Bóna; Dennis Cooke

doi:10.1071/ASEG2009ab003

ISSN: 2202-0586
E-ISSN:

oa Velocity-less imaging of linearly inhomogeneous media in 3D
Authors Andrej Bóna^a and Dennis Cooke^b
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^a Curtin University, , [email protected] ^b Santos, , [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2009, Issue ASEG2009 - 20th Geophysical Conference, Dec 2009, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2009ab003
- Published online: 01 Dec 2009

Abstract

Summary

We show that in a medium with constant velocity-gradient it is possible to find both the two velocity parameters, and the locations of the reflector for each source-receiver pair from the reflection travel-times. This algorithm is a basis for a velocity-less migration; it allows for using the obtained velocity parameters and reflection position for migrating the data. The presented method relies on obtaining the derivatives of the traveltimes with respect to the locations of the sources and receivers in the two horizontal directions.

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References

Červený, V., 2001, Seismic ray theory: Cambridge University Press.
Cooke, D., A. Bóna, and B. Hansen, 2008, Simultaneous time imaging, velocity estimation and multiple suppression using local event slopes: Presented at the Annual SEG conference.
Douma, H. and M. de Hoop, 2007, Leading-order seismic imaging using curvlets.: Geophysics, 72, S231–S248.
Fomel, S., 2002, Applications of plane-wave destruction filters.: Geophysics, 67,1946–1960.
———, 2007, Velocity-independent time-domain seismic imaging using local event slopes: Geophysics, 72, S139–S147.
Ottolini, R., 1983, Velocity independent seismic imaging: Stanford Exploration Project, 37, 59–68.
Tanner, M., F. Koehler, and R. Sheriff, 1979, Complex seismic trace analysis.: Geophysics, 44, 1041–1063.

/content/journals/10.1071/ASEG2009ab003

Article Type: Research Article

Keyword(s): imaging; slowness and traveltime inversion; velocity-less migration

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