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Technical Content

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Herve Prigent, Pierre Gourmel, Anna Rivet, Marion Gavelle, Claire Beigbeder, Matthieu Pouget, Leonid Savitskiy (CGG) ; Andrea Grandi (TotalEnergies) ©2023 EAGE | December

We present a 4D pre-salt reservoir monitoring study from two wide-azimuth towed-streamer (WATS) surveys. Advanced flows were implemented to mitigate complex salt-related challenges and WATS repeatability issues in the image domain. Three models of converted waves interfering at reservoir level were generated via dual ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Thomas Latter, Karl Magnus Nielsen, Anthony Beech, Dario Cantu Bendeck ©2023 EAGE | December

Deriving an accurate high-resolution seismic quality factor (Q) model is necessary to both compensate for the phase dispersion and amplitude attenuation effects of the Earth’s anelasticity during imaging, and to reduce parameter cross-talk during velocity model building (VMB). Various methods exist for deriving Q ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Qingbing Tang, Xiaobo Li, Yi Xie, Farhana Amalina Izzati Binti Hatnan, Guishui Wang, Farhan Hussaidon (CGG) ; Alexander Mueller, James Shorter, Matthew Cannon (Brunei Shell Petroleum) ©2023 EAGE | December

Well drilling and abandonment work offshore Brunei is very challenging due to the presence of complex shallow geological features, such as corals, river channels, gas clouds/chimneys, and small faults. Therefore high-resolution seismic images, which can reveal those features, are desired to help avoid potential ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Adrien Meffre, Vincent Prieux, Matthieu Retailleau, Emile Serra, Abel Afonso Monteiro, Zied Bouzouita (CGG) ; Bezdan Sandor, Orosz Jozsef, Florea Alexandru (OMV PETROM) ©2023 EAGE | December

In this paper, we present a high-resolution FWI case study from the foothills of the Southern Carpathians, in Romania. The input data was acquired in 2022, mostly with dynamite source, and designed for optimal subsurface wide azimuthal illumination. The varied rough terrain and the ...

Industry Article
First Break | Francis Richards, Mark Cowgill, Megan Rayner ©2023 EAGE | December

For subsurface commercial ventures or environmental projects that rely on maps of faulted horizons, accurate maps are fundamental. Fault topology provides an ideal tool for analysis of connectivity of fault systems. The data required to undertake the analysis is straightforward to extract from fault ...

Industry Article
First Break | Sylvain Masclet, Fang Wang, Guillaume Henin, Loic Janot, Olivier Hermant, Hao Jiang, Nicolas Salaun, David Le Meur, Daniela Donno ©2023 EAGE | December

Ocean Bottom Node acquisition is known to improve seismic velocity model building and imaging, especially for deep and complex targets. Due to cost considerations, OBN surveys are typically only acquired around the production field, using a relatively dense receiver grid. At the exploration phase ...

Industry Article
GeoExpro | Misha Isakov, Paolo Gabrielli, Shona Culwick, Emmanuel Nformi (CGG) ; Blanche Mahamat, Achta Boubakar, Christophe Atangana Ndende (Socitété Nationale des Hydrocarbures) ©2023 GEO EXPRO PUBLISHING AS | October

Offshore Cameroon is a proven petroleum province with commercial production from the Douala Kribi-Campo Basin (DKC) and the prolific Rio del Rey Basin (RDR). The recent joint cooperation agreement between Cameroon and Equatorial Guinea will lead to the development of the Yoyo and Yolanda ...

Industry Article
First Break | Vetle Vinje, Marit Stokke Bauck, Hao Jiang, Carsten Scholl, Steve Edwards, Sarah Hill, Federico Buriola, Richard Wombell ©2023 EAGE | October

We evaluate how two-dimensional (2D) seismic and controlled source electromagnetic (CSEM) imaging, both vintage and modern, might help improve geological understanding of, and exploration for, SMS deposits along part of the Mohns Ridge segment of the ultraslow-spreading Arctic Mid-Ocean Ridge. Mohns Ridge has been ...

Industry Article
The Leading Edge | Sam Buist, Li Jiang, Obi Egbue, Daniel Tebo, Luis Lopez, Zhiyuan Wei, Alex Hao2, and Chi Chen ©2023 SEG | August

The Atlantis Field has gone through more than two decades of continuous seismic imaging efforts, during which time many innovative technologies were incubated, the most recent one being the successful application of full-waveform inversion (FWI) in salt environments. This technique led to a significant ...

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