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Abstract

Summary

A new method of 3D RTM-based Wave Path Tomography is presented. Input of the method are RMO picks from wide-azimuth RTM angle gathers. The depth sensitivity of picked events to a velocity perturbation is derived by Born approximation of the associated wave fields and the images. For reasons of efficiency, this is done only for the stationary shots, pertaining to selected picks at certain angle slots in the gather. In the sensitivity kernel calculations, the corresponding recorded data are restricted to those in the vicinity of the estimated stationary receivers. Each branch of a sensitivity kernel, linking stationary shot or receiver to the picked event, is computed by RTM imaging. The method is successfully tested at a realistic scale for a wide-azimuth synthetic example, and for a case with real data from an OBS survey.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.201413499
2015-06-01
2024-04-29

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References

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3D RTM-based Wave Path Tomography Tested at a Realistic Scale
Conference Proceedings 2015, 1 (2015); https://doi.org/10.3997/2214-4609.201413499
/content/papers/10.3997/2214-4609.201413499
/content/papers/10.3997/2214-4609.201413499
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