Sorry, you need to enable JavaScript to visit this website.

Technical Content

Industry Article

A decade of HPC in oil

First Break | Jean-yves Blanc, Laurent Clerc ©2021 EAGE

CGG has always been at the forefront of industrial High Perfor­mance Computing (HPC) architectures: we were operating vector supercomputers (Convex, Cray and NEC) in the early 1990s, and large parallel supercomputers (Convex SPP, IBM SP, Sgi Origin) by the end of that decade. At ...

Download Resource
Industry Article

Optimal transport full-waveform inversion: from theory to industrial applications with examples from the Sultanate of Oman

First Break | Jeremie Messud, Diego Carotti, Olivier Hermant, Anna Sedova, Gilles Lambare ©2021 EAGE

The optimal transport problem was formulated more than 200 years ago to calculate the optimal way of transporting piles of sand. Due to the interesting properties of its solutions with respect to shifts between the compared distributions, optimal transport has recently been adapted to ...

Download Resource
Technical Abstract

Sim-source for 4D: Learnings from processing the first ISS OBN monitor survey at Atlantis

SEG - Society of Exploration Geophysicists | Jing Yang, Xin He, Jiawei Mei, Rongxin Huang (CGG) ; Qingsong Li, Kang Fu, Jean-Paul van Gestel (BP) @2021 Society of Exploration Geophysicists

Driven by the notion that blending noise may materially increase the background noise level and obscure the interpretation of weak time-lapse (4D) signals related to subtle reservoir changes, the industry has not yet seen any simultaneous-source (sim-source) surveys acquired for reservoir monitoring. Thus, whether ...

Download Resource
Technical Abstract

Shear-wave velocity update using PS reflection FWI for imaging beneath complex gas clouds

SEG - Society of Exploration Geophysicists | M. Wang, Y. Xie, Peipei Deng, J.H. Tan, S. Maitra (CGG) ; M. Camm, N.F. S Zainal (KOPC) ; W.H. Tang, M.N. B. M. Isa, AA. B. Muhamad (Petronas) @2021 Society of Exploration Geophysicists

Shear wave velocity model building (S-wave VMB) is a critical and difficult processing step for converted wave imaging. Conventional S-wave VMB depends on PP-PS joint interpretation-based image registration and PP-PS joint tomography-based residual moveout flattening which have certain advantages and drawbacks. We introduce PS ...

Download Resource
Technical Abstract

FWI Imaging: Revealing the unprecedented resolution of seismic data

SEG - Society of Exploration Geophysicists | Zhiyuan Wei, Jiawei Mei, Zedong Wu, Zhigang Zhang, Rongxin Huang, Ping Wang @2021 Society of Exploration Geophysicists

Although the resolution of a seismic image is ultimately bound by the spatial and temporal sampling of the acquired seismic data, the seismic images obtained through conventional imaging methods normally fall far short of this limit. In addition to attenuation in the Earth, factors ...

Download Resource
Technical Abstract

Wave-equation traveltime and amplitude for Kirchhoff migration

SEG - Society of Exploration Geophysicists | Yu Pu, Gang Liu, Diancheng Wang, Hui Huang, Ping Wang @2021 Society of Exploration Geophysicists

Full-waveform inversion has been established as a standard tool for building high-resolution velocity models. To take full advantage of such models, the migration algorithm must be capable of handling fine-scale geo-bodies and sharp contrasts while affordably producing high-frequency migration stacks and gathers. Even though ...

Download Resource
Technical Abstract

Imaging the complex geology in the Central Basin Platform with Land FWI

SEG - Society of Exploration Geophysicists | Dongren (Alan) Bai, Lin Zheng, Wubing Deng @2021 Society of Exploration Geophysicists

Recently, land full-waveform inversion (FWI) has shown great potential in resolving near-surface complexity in the Delaware Basin, providing significant imaging uplift and useful information for shallow hazard identification. However, deep section updates beyond diving wave penetration remain challenging. We present an application of land ...

Download Resource
Technical Abstract

Machine learning for seismic processing: The path to fulfilling promises

SEG - Society of Exploration Geophysicists | Song Hou, Jérémie Messud @2021 Society of Exploration Geophysicists

Machine learning (ML) has garnered great attention within the field of seismic processing due to its vast achievements for quality and efficiency in the area of computer vision. Recent academic papers have demonstrated some potential for the use of machine learning in processing seismic ...

Download Resource
Technical Abstract

Learnings from an FWI imaging study using 3D and 4D data over a postsalt field in Campos Basin

SEG - Society of Exploration Geophysicists | Samanta Bortoni, Sergio Barragan, Gregorio Azevedo, Luis Cypriano (CGG) ; André Ferreira, Wendel Moreira, Paula dos Reis, Wilson Filho (PETROBRAS) @2021 Society of Exploration Geophysicists

Seismic images obtained through conventional migration methods have limitations as amplitude distortions and migration artifacts. To mitigate these limitations, we can generate FWI Images by computing the reflector-normal derivatives of the high-frequency FWI velocities. Given the resolution, accuracy, and geological consistency of the velocities ...

Download Resource
Share Link
LinkedIn icon Facebook icon Twitter icon