Ocean Bottom Seismic

CGG are leaders in the processing and imaging of ocean bottom seismic (OBS) data. We have the necessary breadth and depth of resources and expertise to work with every kind of ocean bottom seismic, ocean bottom node (OBN), ocean bottom cable (OBC), and permanent life-of-field (LoFS) data. Our experience working with data from all over the world enables us to handle challenges unique to each location. In addition, we offer a full range of the latest interpretation and reservoir services. Our skill at integrating your seabed data with, and processing alongside, your marine streamer data brings benefits such as enhanced coverage, improved imaging and 4D applications.

OBN Imaging

There was been extensive growth in the use of OBN surveys to provide greater interpretation certainty in the exploration of complex deepwater areas, such as subsalt Gulf of Mexico or pre-salt offshore Brazil. Our latest OBN imaging technologies allow you to get closer to the reservoir by taking full advantage of the valuable low-frequency, full-azimuth, ultra-long offset information recorded in OBN surveys.

The combination of FWI and OBN data supports a data-driven approach to velocity model building which can reduce project cycle time. Traditional velocity model building sequences based on manual salt interpretation require an accurate salt model to obtain an image that can be interpreted. Recent developments pioneered by CGG, particularly time-lag FWI, have streamlined the update of salt models, alleviating the manual interpretation bottleneck and bringing a step-change to subsalt imaging in some of the most complex areas.

Other aspects of OBN processing benefit from the latest techniques, such as internal multiple attenuation and least-squares migration, enabling the delivery of more reliable subsalt reservoir images and attributes.

OBN model
OBN seismic

Model and seismic resulting from TLFWI applied to the CGG Multi-Client Mississippi Canyon OBN Survey

Improving images under complex salt with ocea...

Yuan Yao* | Hongda Ma | Yan Liu | Chao Peng (CGG); Gopal Moh...
©2019 SEG

Illuminating Santos Basin’s pre-salt with OBN...

Florian Jouno | Adriano Martinez | Denis Ferreira | Daniela ...
©2019 SEG

Sparse nodes for velocity: Learnings from Atl...

Jiawei Mei* | Zhigang Zhang | Feng Lin | Rongxin Huang | Pin...
©2019 SEG
Multi-Client Data - GeoStore


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Subsurface Imaging - FWI

Full Waveform Inversion

Reveal intricate velocity details for the clearest images. Harness seismic low frequencies from BroadSeis, StagSeis, seabed and land data.

Subsurface Imaging - Least-Squares Migration

Least-Squares Migration

Least-Squares Migration provides images with better balanced illumination, improved signal-to-noise ratio, reduced migration artifacts and more interpretable seismic amplitudes.

Offshore - OBN (March 2020)

Offshore Magazine article

New OBN imaging improves understanding of complex reservoirs
Data-driven workflows leverage ocean bottom node potential
© March 2020 Offshore Magazine
Subsurface Imaging


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