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Technical Content

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Thibault Le Canu, Nathalie Badel, Olivier Colnard, Romain Reboul, Shivaji Maitra ©2022 EAGE | December

Fizz gas detection is a critical step in field development as it is often difficult to differentiate it from commercial gas in reservoirs on acquired seismic data. In a shallow reservoir context, it is theoretically possible to observe a fizz gas effect through a ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Nicolas Salaun, Andrew Wright, Alessandro Pintus, Alireza Roodaki ©2022 EAGE | December

The Haugaland High, in the Norwegian North Sea, consists of a layered overburden of sub-horizontal sediments of almost 2km thick which sits on the Cretaceous Chalk. The background velocity regime of these top layers has a low vertical gradient down to the Chalk interface ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Grant Cole, Robert Gater, Malcolm Kent, Jim Fenton, Natalia Wasielka, Vitor Serrano Alves, Carolina Olivares, Sean Humphreys (CGG) ; Stian Lindstrøm (OMV (Norge) AS) ; Alenka Crne, Sarah Robertson (Chrysaor Norge AS) ©2022 EAGE | December

This study aimed to provide greater insight into the question of whether a near-field Paleozoic interval could retain sufficient reservoir quality to be attractive for future exploration. To meet this challenge, an integrated multidisciplinary approach was adopted that brought together detailed geological analysis with ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Guillaume Gigou, Loic Janot, Nicolas Salaun, Sylvain Masclet, Isabel Espin (CGG) ; Per Eivind Dhelie, Vidar Danielsen, Jan Erik Lie (Lundin Energy) ©2022 EAGE | December

To improve the imaging of the Barents Sea’s Nordkapp basin, either in terms of resolution or geological structure, a new seismic acquisition design was proposed, using a widespread hexa-source sitting on top of 18 non-flat streamers. Imaging this new recorded data required specific and ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Harrison Moore, Michal Galyga, Ewa Kaszycka (CGG) ; V. Lesnikov, A. Merry, A. Mitra, D. Taylor, R. Bellahsene, M. Verliac (TotalEnergies) ©2022 EAGE | December

We discuss the processing and imaging solutions designed to assess 4D signal in a monitor Vertical Seismic Profiling (VSP) survey acquired with Distributed Acoustic Sensing (DAS) over the Culzean field, Central North Sea. With a baseline DAS VSP survey acquired during a pilot programme ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Manuel Peiro, Wenlei Gao, Alexis Fotsoh, Nabil Masmoudi, Alireza Roodaki, Andrew Ratcliffe, Herve Prigent, Olivier Leblanc (CGG) ; Per Eivind Dhelie, Vidar Danielsen, Jon André Haugen, Knut Richard Straith (Lundin Energy Norway) ©2022 EAGE | December

Multi-component data recording from ocean-bottom seismic (OBS) surveys captures both PP and PS (converted wave) events. Processing such data can produce superior images compared to those obtained from conventional streamer acquisitions. In addition, PP and PS images can provide valuable insights into reservoir properties ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Thomas Latter, Marianne Gram-Jensen, Federico Buriola, Hung Dinh, Michael Faggetter, Richard Jupp (CGG) ; Mike Townsend, Nils Grinde, Grant Byerley, Coralie Mathieu (Neptune Energy) ©2022 EAGE | December

The Dugong area in the Norwegian North Sea was surveyed by North-South (N–S) orientated, variable depth streamer data, and recently, East-West (E–W) orientated triple source multi-sensor data. By reprocessing the original N-S data in combination with the E–W, we found that a combined dual-azimuth ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Thibault Lesieur, Geoffroy Pignot, Nadia Al Kiyumi, Jeremie Messud ©2022 EAGE | December

Convolutional-based neural network (CNN-based) architectures have shown promise in performing denoising tasks. However, it can be demonstrated that their predictions are of limited use for some tasks because they produce signal leakage. For these tasks, a possible improvement is to incorporate CNN-based architectures as ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Matthew Fry, Sijibomioluwa Badejo, Jamie Richardson (CGG) ; Kenneth Petersen, Holger Justwan (Hess) ©2022 EAGE | December

Over two million files, containing geochemical information, have been collected from tens of thousands of wells drilled during decades of exploration in the Gulf of Mexico (GOM) and are available to geoscientists in the public domain. While these files represent a vast knowledgebase covering ...

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