2. Outline
Who we are?
Seismic processing overview
Velocity analysis
Velocity model inversion
Layer striping
Three examples of CGG model inversion technologies
4. Delivering advanced geoscience solutions
Full range of products and clear
market leadership onshore,
offshore and downhole:
Technology leadership
Large installed base
A cornerstone for CGG
integrated solutions
Full range of seismic and other
geophysical methods for
acquisition:
Land
Marine
Seabed*
Airborne**
Subsurface Imaging
Reservoir Software & Services
Geological Services
Exploration & Appraisal
Satellite Mapping
Multi-Client Data Library
(Seismic, Grav-Mag, Geological)
Data Management Services
Geology,
Geophysics
& Reservoir
AcquisitionEquipment
9,800 employees
70 locations worldwide
$4.2 Bn 2011 pro-forma revenue
*Through the Seabed Geosolutions
joint venture owned 60 % by Fugro
% and 40 % by CGG
**Airborne will be integrated once
operating licenses and
administrative authorizations have
been received4
5. Passion for Innovation
1930 1940 1950 1960 20201970 1980 1990 2000 2010
Creation of
CGG
Wide Azimuth
Acquisition
Long-Offset
Marine
Acquisition
Digital
Innovation
Processing
on Micro
Sercel 408
2D Innovation
UltraSeis
Kirchhoff PSDM
3D SRME
BroadSeis
RTM 3D Gather
HPVA
Sercel 428
Nautilus
Sentinel
Reflection
Seismic
3D Innovation
Sercel 348
UNITE
StagSeis
A unique history of innovation leadership
R&D commitment
Technology partnerships and centers
– Saudi Aramco (Al Khobar)
– Petrobras (Rio)
5
16. 16
Migration with the Initial velocity model
INITIAL MODELMigrated session
* These images are for illustration purposes only
17. Take Common Image
Gathers on a regular grid
trough the entire session.
17
Residual Moveout (RMO) Analysis and Picking
Are the gathers flat?
Can we improve the initial
velocity?
INITIAL MODELMigrated session
* These images are for illustration purposes only
18. Take Common Image
Gathers on a regular grid
trough the entire session.
18
Velocity update
INITIAL MODEL
There are several methods for
velocity inversion. We shall
try a standard tomography.
UPDATED MODELMigrated session
* These images are for illustration purposes only
19. 19
New Migration to confirm
UPDATED MODELNew Migrated session
* These images are for illustration purposes only
20. 20
Conclusion: Image Before Update
INITIAL MODEL
Migrated session CIG gathers
* These images are for illustration purposes only
21. 21
Conclusion: Image After Update
UPDATED MODEL
* These images are for illustration purposes only
Migrated session CIG gathers