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Technical Content

Industry Article
GeoExpro | Neville Brookes, Ravi Kumar, Gregor Duval, Simon Otto ©2024 GEO EXPRO PUBLISHING AS | March

A major challenge in the US Gulf of Mexico is transforming disparate public datasets into a quality-controlled database. CGG has successfully created and used the database for its Storage Play Quality Index (SPQI) carbon storage screening methodology and applied its latest imaging technologies to ...

Industry Article
GeoExpro | Roberto Juncken, Bruna Lyra, Mariano Gatti, Abraham Rodriguez ©2023 GEO EXPRO PUBLISHING AS | December

An increasing number of discoveries with high CO2 content offshore Brazil highlight a new exploration risk for the pre-salt play. New seismic data is fundamental to understanding deep geological features to address this risk. CGG’s Nebula-C data set provides images down to 20 km ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Jian Cai, Yong Xia Liu, Raphael Tan, Peipei Deng, Min Wang, Yi Xie, Barry Hung (CGG) ; Min Ouyang, Dun Deng (CNOOC) ©2023 EAGE | December

Yinggehai basin is one of the most important basins of the South China Sea for its mega gas reservoirs and exploration potential. Vintage seismic data generally suffers severely from complex structures, including diapir formed by thermal fluids, strong shallow gas fields, and complex faulting ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Min Wang, Yi Xie, Peipei Deng, Yitao Chen, Jian Cai, Xiang (roger) Li ©2023 EAGE | December

Dynamic Resolution Time-Lag FWI (DR-TLFWI) aims to use both diving waves and reflections for velocity update with optimized low- and high-wavenumber components from shallow to deep section. The proposed method builds contrast into the velocity model, enabling the simulation of reflections. The iterative velocity ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Alessandro Pintus, Hichem Ayadi, Nicolas Salaun ©2023 EAGE | December

Superimposed reservoirs are common in oil and gas production, but they are challenging to monitor with time-lapse seismic imaging. A common seismic attribute used for assessing reservoir evolution during production is the time-shift measurement which is obtained comparing two 3D seismic images. In the ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Guillaume Henin, Loic Janot, Hao Jiang, Sylvain Masclet, Nicolas Salaun (CGG) ; Per Eivind Dhelie, Vidar Danielsen, Jan Erik Lie (AKER BP) ©2023 EAGE | December

The Nordkapp Basin is a large under-explored salt basin of the Barents Sea. Despite several exploration campaigns over the past decades, no successful drilling was achieved. A new hybrid survey combining streamers and nodes was acquired in 2021 to unlock this new play. Sparse ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Jaswinder Mann ©2023 EAGE | December

In this paper, we present the importance of a regional dataset, acquired and processed with the latest seismic imaging technologies to better understand the depositional environments of one of the main hydrocarbon plays in the Northern North Sea – the Upper Jurassic sandstones. Here ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Ojasvi Sancheti, Song Hou ©2023 EAGE | December

Geological bodies like sand injectites are found in numerous geodynamic and geological contexts around the world, and they can manifest as low- or high-amplitude seismic responses with complex structures. In this paper, we demonstrated an amplitude preserving DNN-based workflow for injectite detection using customized ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Wei Zhao, Priyanka Sadhnani, Yu Huang, Sabaresan Mothi ©2023 EAGE | December

In 4D (time-lapse) imaging, the primary objective is to obtain a 4D image that is sufficiently free of noise associated with acquisition and processing in order to understand the changes at the reservoir interval. To obtain accurate 4D products, all seismic processing steps must ...

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