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Technical Content

Technical Abstract

Resolving Complex Carbonate Imaging Challenges with FWI on Short-Offset Vintage Streamer Data

EAGE - European Association of Geoscientists and Engineers | Peipei Deng, Min Wang, Zhonghuan Chen, Keat Huat Teng, Barry Hung (CGG) ; Y. Kim, K. Lee, C. Jeong, S. Oh, H. Choi, S. Kim (SK innovation), F. Huang, M. Luo (CNOOC) ©2020 EAGE

Carbonate velocity model building is challenging due to the complex geometry and sharp velocity contrasts associated with carbonates. Full-waveform inversion (FWI), together with long offsets, wide azimuth and good low frequency data, is known to be a powerful tool to address these challenges. Unfortunately ...

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Industry Article

Northern North Sea: a dual-azimuth solution

GeoExpro | Anna Rumyantseva, Jaswinder Mann, Idar Kjørlaug ©2022 GeoPublishing Ltd

The Northern North Sea is a very active area for oil and gas exploration with several commercial discoveries made over the last few years. These include the Dugong discovery on the Tampen Spur and multiple discoveries in the Greater Fram area on the Horda ...

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Industry Article

Sophie Zurquiyah - Repositioning CGG for the Transition

GeoExpro | ©2022 GeoPublishing Ltd

Sophie Zurquiyah joined CGG in 2013 and was appointed CEO in 2018. The collapse in oil price,Covid-19 pandemic and energy transition have created a tough business environment during her near four-year tenure in this role, but also created opportunities. In this interview, Sophie talks ...

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Industry Article

Nordkapp TopSeis/node acquisition - Lessons from a modelling study

First Break. | Vetle Vinje, Hao Jiang, Nicolas Salaun (CGG) ; Jan-Erik Lie, Per Eivind Dhelie, Vidar Danielsen (Lundin Energy Norway AS) ©2022 EAGE

Based on an extensive 3D modelling study utilising full-wavefield Finite-Difference modelling and Full-Waveform Inversion (FWI) we demonstrate that the TopSeis/OBN hybrid acquisition acquired from May to August 2021 in the Nordkapp basin in the Barents Sea has the potential to image salt flanks and ...

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Industry Article

A machine learning pipeline for document extraction

First Break. | Chin Hang Lun, Thomas Hewitt, Song Hou ©2022 EAGE

Each year the geoscience industry creates huge volumes of documents containing a wealth of knowledge which cannot be easily queried or extracted. Key to the successful extraction and transformation of data is an understanding of the nature of the data that exists within a ...

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Industry Article

Value of Geoscience for Carbon Capture, Storage and Utilization

Hart Energy | Carolina Coll ©2022 Hart Energy

While significant progress has been made in CCUS over the last five years, the industrial and financial sectors need to see how projects are being effectively de-risked. By capitalizing on the latest technology advances and the integration of multidisciplinary skills and data, geoscience has ...

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Industry Article

The value of very low frequencies and far offsets for seismic data in the Permian Basin: Case study on a new dense survey from the Central Basin Platform

The Leading Edge | Vincent Durussel, Dongren (Alan) Bai, Amin Baharvand, Scott Downie (CGG) ; Keith Millis (Occidental Petroleum) ©2022 SEG

This paper describes a new dense survey acquired in 2020 in the Permian Basin and aims to objectively assess the quality and benefits brought by a richer low end of the spectrum and far offsets. For this purpose, we considered several aspects, from acquisition ...

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Industry Article

Revival of legacy land seismic surveys using advanced processing technologies: an example from the Carpathian foothills

First Break | Adrien Meffre, Vincent Prieux, Matthieu Retailleau, David Le Meur, Abel Afonso Monteiro, Zied Bouzouita, Fang Wang, Sofia Mestiri (CGG) ; Justin Vermuelen, Emma Tyler (OMV Petrom) ; Jozsef Orosz, Tunde Markos (OMV E&P) ©2022 EAGE

Twelve multi-source/multi-receiver land surveys from the Carpathian foothills were reprocessed and merged using the most advanced signal processing and imaging technologies. These included an innovative denoising subtraction using a primary model from the de-migration of a clean reflectivity from PSDM as well as a ...

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