Extracting geologic information directly from high-resolution full-waveform inversion velocity models — A case study from offshore Trinidad

2017 ◽  
Vol 36 (1) ◽  
pp. 67-74 ◽  
Author(s):  
Nick Benfield ◽  
Vishram Rambaran ◽  
Joel Dowlath ◽  
Tom Sinclair ◽  
Miles Evans ◽  
...  
Keyword(s):  
High Resolution ◽  
Waveform Inversion ◽  
Full Waveform Inversion ◽  
Velocity Models ◽  
Full Waveform ◽  
Geologic Information

scholarly journals Velocity model building by 3D frequency-domain, full-waveform inversion of wide-aperture seismic data

Geophysics ◽  
2008 ◽  
Vol 73 (5) ◽  
pp. VE101-VE117 ◽  
Author(s):  
Hafedh Ben-Hadj-Ali ◽  
Stéphane Operto ◽  
Jean Virieux
Keyword(s):  
High Resolution ◽  
Frequency Domain ◽  
Distributed Memory ◽  
Waveform Inversion ◽  
Steepest Descent Method ◽  
Frequency Domain Method ◽  
Full Waveform Inversion ◽  
Direct Solver ◽  
Velocity Models ◽  
Full Waveform

We assessed 3D frequency-domain (FD) acoustic full-waveform inversion (FWI) data as a tool to develop high-resolution velocity models from low-frequency global-offset data. The inverse problem was posed as a classic least-squares optimization problem solved with a steepest-descent method. Inversion was applied to a few discrete frequencies, allowing management of a limited subset of the 3D data volume. The forward problem was solved with a finite-difference frequency-domain method based on a massively parallel direct solver, allowing efficient multiple-shot simulations. The inversion code was fully parallelized for distributed-memory platforms, taking advantage of a domain decomposition of the modeled wavefields performed by the direct solver. After validation on simple synthetic tests, FWI was applied to two targets (channel and thrust system) of the 3D SEG/EAGE overthrust model, corresponding to 3D domains of [Formula: see text] and [Formula: see text], respectively. The maximum inverted frequencies are 15 and [Formula: see text] for the two applications. A maximum of 30 dual-core biprocessor nodes with [Formula: see text] of shared memory per node were used for the second target. The main structures were imaged successfully at a resolution scale consistent with the inverted frequencies. Our study confirms the feasibility of 3D frequency-domain FWI of global-offset data on large distributed-memory platforms to develop high-resolution velocity models. These high-velocity models may provide accurate macromodels for wave-equation prestack depth migration.

Mitigating Drilling Risk through High-Resolution Processing and Full-Waveform Inversion, A Case Study, Mediterranean Sea, Offshore Egypt

2020 ◽  
Author(s):  
M. Salheen ◽  
M. Ouda ◽  
I. Mihaljevic ◽  
A. Ibrahim ◽  
M. ElAttar ◽  
...  
Keyword(s):  
High Resolution ◽  
Mediterranean Sea ◽  
Waveform Inversion ◽  
Full Waveform Inversion ◽  
Full Waveform

Using full waveform inversion to update supra-salt velocity models: A case study in the Gulf of Mexico

2014 ◽  
Author(s):  
Chuen-Song Chen* ◽  
Jian Zhang ◽  
Xu Li ◽  
Hui Chen ◽  
Shuo Ji
Keyword(s):  
Gulf Of Mexico ◽  
Waveform Inversion ◽  
Full Waveform Inversion ◽  
Velocity Models ◽  
Full Waveform

High Resolution Anisotropic Earth Model Building on Conventional Seismic Data Using Full Waveform Inversion: A Case Study Offshore Australia

2014 ◽  
Author(s):  
Bee Jik Lim ◽  
Denes Vigh ◽  
Stephen Alwon ◽  
Saeeda N. Hydal ◽  
Martin Bayly ◽  
...  
Keyword(s):  
High Resolution ◽  
Seismic Data ◽  
Model Building ◽  
Waveform Inversion ◽  
Earth Model ◽  
Full Waveform Inversion ◽  
Full Waveform

scholarly journals High Resolution Anisotropic Earth Model Building on Conventional Seismic Data Using Full Waveform Inversion: A Case Study Offshore Australia

2015 ◽  
Vol 2015 (1) ◽  
pp. 1-5
Author(s):  
Bee Jik Lim ◽  
Denes Vigh ◽  
Stephen Alwon ◽  
Saeeda Hydal ◽  
Martin Bayly ◽  
...  
Keyword(s):  
High Resolution ◽  
Seismic Data ◽  
Model Building ◽  
Waveform Inversion ◽  
Earth Model ◽  
Full Waveform Inversion ◽  
Full Waveform

Enhanced imaging with high-resolution full-waveform inversion and reverse time migration: A North Sea OBC case study

2014 ◽  
Vol 33 (9) ◽  
pp. 986-992 ◽  
Author(s):  
Andrew Ratcliffe ◽  
Antonio Privitera ◽  
Graham Conroy ◽  
Vetle Vinje ◽  
Alexandre Bertrand ◽  
...  
Keyword(s):  
High Resolution ◽  
North Sea ◽  
Waveform Inversion ◽  
Full Waveform Inversion ◽  
Reverse Time ◽  
Reverse Time Migration ◽  
Full Waveform ◽  
Time Migration ◽  
Enhanced Imaging

High Resolution Anisotropic Earth Model Building on Conventional Seismic Data Using Full Waveform Inversion: A Case Study Offshore Australia

2014 ◽  
Author(s):  
Bee Jik Lim ◽  
Denes Vigh ◽  
Stephen Alwon ◽  
Saeeda N. Hydal ◽  
Martin Bayly ◽  
...  
Keyword(s):  
High Resolution ◽  
Seismic Data ◽  
Model Building ◽  
Waveform Inversion ◽  
Earth Model ◽  
Full Waveform Inversion ◽  
Full Waveform
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