Solving the imaging complexity via application of elastic FWI in the Nile Delta

Преодоление сложности имиджинга с помощью применения упругой FWI в Дельте Нила
M. Romanenko, V. Valler, M. Hart, Juergen Fruehn, L. Saxton, Q. Li, I. De Lemos
2026-02-10

Elastic FullWaveform InversionMessinian layerNile DeltaP- and S-wave physicsaFWIacoustic FWIchannelseFWImud volcanoesmulti-azimuth streamer datasalt-sediment interfacessmall gas pockets
This study highlights the application of Elastic FullWaveform Inversion (eFWI) to address imaging challenges in the complex geological structures of the Nile Delta. Unlike acoustic FWI (aFWI), eFWI incorporates both P- and S-wave physics, effectively handling significant velocity contrasts, such as those found in the Messinian layer, and reducing boundary smearing at salt-sediment interfaces. The application of eFWI to multi-azimuth streamer data provides superior imaging of mud volcanoes, small gas pockets, and channels in the post-Messinian, as well as improved resolution of complex Messinian and pre-Messinian layers.
1
Application of eFWI to multi-azimuth streamer data yields superior imaging of mud volcanoes, small gas pockets, and channels in the post-Messinian.
2
Elastic Full-Waveform Inversion (eFWI) was applied to Nile Delta imaging and addresses complex geological challenges.
3
eFWI incorporates both P- and S-wave physics, unlike acoustic FWI, enabling effective handling of significant velocity contrasts such as the Messinian layer.
4
eFWI provides improved resolution of complex Messinian and pre-Messinian layers.
5
eFWI reduces boundary smearing at salt-sediment interfaces compared to acoustic FWI.

Geological structures of the Nile Delta (including Messinian and pre-Messinian layers, salt-sediment interfaces, mud volcanoes, gas pockets, and channels)

Imaging improvement using elastic full-waveform inversion (eFWI) applied to multi-azimuth streamer data, specifically resolving P- and S-wave effects to handle strong velocity contrasts and reduce boundary smearing for enhanced visualization of mud volcanoes, small gas pockets, channels, and complex Messinian/pre-Messinian layers

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2026-02-10
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M. Romanenko
V. Valler
M. Hart
Juergen Fruehn
L. Saxton
Q. Li
I. De Lemos
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