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Abstract

Summary

In addition to other subsurface reflections, water-layer related multiples (WLRMs) involve at least one water-layer reflection between the free surface and the water bottom. In shallow water environments, WLRMs typically dominate other classes of multiple, and achieving effective attenuation of WLRMs is of significant interest. When combined with an appropriate adaptive subtraction, Model-based Water-layer Demultiple (MWD) has been found to be highly effective in attenuating WLRMs. In this paper we demonstrate a limitation of the conventional implementation of MWD, and propose an extension to the method to account for this limitation. This extension alleviates the dependence of a successful demultiple result on the adaptive subtraction. We demonstrate the effectiveness of our approach on simple 1D synthetics, and real-world 3D seismic data from towed-streamer acquisition in the North Sea.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.201412687
2015-06-01
2024-04-20

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References

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Recursive Model-based Water-layer Demultiple
Conference Proceedings 2015, 1 (2015); https://doi.org/10.3997/2214-4609.201412687
/content/papers/10.3997/2214-4609.201412687
/content/papers/10.3997/2214-4609.201412687
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