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Technical Content

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Federico Buriola, Keith Mills, Sharon Cooper, Steve Hollingworth ©2021 EAGE | May

The desire for ultra-high density (UHD) seismic surveys is now becoming more achievable for future exploration and field development with the increasing availability of versatile nodal land systems. Acquisition geometry design using a higher density of sources as well as receivers considerably reduces the ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Zhiyuan Wei, Jiawei Mei, Zedong Wu, Zhigang Zhang, Rongxin Huang, Ping Wang ©2021 EAGE | May

A high-resolution seismic image is of great importance to exploration and production in many ways, such as bypassing drilling hazards and identifying compartmentalized reservoirs. To achieve seismic resolution as high as possible, the conventional seismic imaging process takes more of a linear approach to ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Ololade Bukola, Bingmu Xiao, James Sinden (CGG) ; Edith Miller, Peter Nevill (Chevron Technology Centre) ; Lydia Novakovic (Chevron North America Exploration and Production) ©2021 EAGE | May

4D time-lapse seismic imaging is typically performed using the same velocity model to migrate the baseline and monitor data. However, in complex cases where one producing reservoir sits above another, significant changes in the properties of the overlying reservoir can result in a 4D ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Celine Lacombe, Issa Hammoud, Jeremie Messud, Hanyuan Peng, Thibault Lesieur, Paulien Jeunesse ©2021 EAGE | May

Convolutional based deep neural networks can be used in addition to existing workflows, to improve turnaround or as a ‘guide’ for further processing. Whilst a lot of effort has been made to try to improve the DNN architecture for processing tasks or to understand ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Mathieu Chambefort, Jeremie Messud ©2020 EAGE | May

Learning how to best mimic seismic processing algorithms or workflows with deep learning (DL) has become a very active field of research. However, seismic processing own particularities may necessitate adaptations of current DL methods. In this paper, we explain and illustrate how the different ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Nabil Masmoudi, Andrew Ratcliffe, Min Wang, Yi Xie (CGG) ; Tengfei Wang (Tongji University) ©2021 EAGE | May

Depth imaging of converted-wave (P-to-S) ocean-bottom seismic (OBS) data requires a depth model for both the P- and S-wave velocities. Building the S-wave velocity model is very challenging: conventional techniques include PP and PS image registration, or joint PP and PS tomography. These approaches ...

Technical Abstract
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 | May

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 ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Chin Hang Lun, Thomas Hewitt, Song Hou ©2021 EAGE | May

There have been many advances in natural language processing in recent years but most of the work have been focused on texts from a general domain or medicine and so datasets in the geology domain are sadly lacking. We demonstrate how existing taxonomy and ...

Technical Abstract
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 | November

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 ...