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Abstract

Summary

Gas absorption causes anelastic effects (described by the quality factor Q) and is a well-known source of amplitude loss and phase distortion in seismic data. Advances in full waveform inversion technology have recently offered a new possibility to compensate for phase distortion and amplitude loss by a joint update between velocity and the quality factor (Q). Several industrial applications on towed streamer data have recently been published. In this paper we present a new application on a North Sea dataset with gas present in the overburden. The dataset consists of wide azimuth ocean bottom P-wave seismic data, which is particularly favourable for application of FWI. We see that when combined with Q-Reverse Time Migration a good uplift in reservoir imaging is obtained.

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/content/papers/10.3997/2214-4609.201901235
2019-06-03
2024-04-26

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References

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201901235
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Improved Structural Imaging Using Joint Velocity and Q FWI on Ocean Bottom Seismic
Conference Proceedings 2019, 1 (2019); https://doi.org/10.3997/2214-4609.201901235
/content/papers/10.3997/2214-4609.201901235
/content/papers/10.3997/2214-4609.201901235
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