1887

Abstract

Summary

Many modern towed-streamer and ocean-bottom node acquisition geometries designed for deep targets do not capture small reflection angles from shallow events. This results in shallow images that are degraded by significant wavelet stretch and acquisition striping. Multiple imaging has been established as one way to address this issue; however, results may be contaminated with multiple crosstalk in many cases. We propose a cascaded least-squares multiple imaging approach to overcome causal multiple crosstalk, successively imaging to increasing depths. Data domain residuals based on each image are used as input to the subsequent multiple migration step to prevent multiple crosstalk forming in the deeper section. The approach has proven to be robust, with its effectiveness being demonstrated on three field data examples.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.2024101785
2024-06-10
2026-02-09

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References

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/content/papers/10.3997/2214-4609.2024101785
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Cascaded Least-Squares Multiple Imaging for Reduced Multiple Crosstalk
Conference Proceedings 2024, 1 (2024); https://doi.org/10.3997/2214-4609.2024101785
/content/papers/10.3997/2214-4609.2024101785
/content/papers/10.3997/2214-4609.2024101785
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