|Dr Robert Soubaras (CGG, Massy, France)|
|Geophysics – Seismic Acquisition|
|5 CPD points|
4D ATTENUATION DECONVOLUTION MIGRATION NOISE OFFSHORE SIGNAL PROCESSING VARIABLE‑DEPTH STREAMER
In the past few years, the bandwidth of marine seismic images has dramatically increased from a 3 octaves 10 Hz – 80 Hz to a 6 octaves 2.5 Hz – 200 Hz. This one-day course is intended to show how this was achieved: by combining advances in equipment, in acquisition design (both on the source and the receiver side) and in data processing. The course will cover the theory of the various marine broadband methods that are currently used (over-under, dual sensor, variable-depth), with the aid of synthetic examples. Real data results will also be shown, although these will be based on the variable-depth streamer method.
The course is intended to give an adequate background to understand the problems involved in broadband marine acquisition and processing.
- Estimation theory
- Factors affecting the seismic bandwidth
- Why broadband?
- Marine acquisition methods
- Receiver deghosting
- Source ghost
- Processing broadband data
- Inverting broadband data
- 4D processing of broadband data
The course is mainly designed for research or processing geophysicists although anybody involved in marine seismic may be interested in certain parts of the course.
Participants should have knowledge of signal processing and geophysical processing.
About the instructor
Robert Soubaras received an Engineering Degree in 1984 and a Ph.D. in Signal Processing in 1987, both from Télécom ParisTech, Paris, France. He worked at the radar division of Thomson-CSF in Paris for two years before joining CGG in 1989, where he has conducted various research projects in topics like deconvolution, noise attenuation, multi- component processing, wave-equation migration, velocity model building, broadband acquisition and processing. He is presently Chief Scientist in the Subsurface Imaging Division, located in Massy, France.
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