Second EAGE Marine Acquisition Workshop

August 25 - 26, 2020 -Oslo, Norway

Category: Tradeshows

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CGG's global geoscience technologies enable you to build comprehensive earth models that support the discovery and responsible management of the Earth's natural resources.

Learn more about our broad range of leading products and expert services that help unlock the secrets of the earth through a variety of geoscience disciplines.

Come share our passion.

Our Technical Papers

True vertical and orthogonal OBN sensing with 3C MEMS sensors
Nicolas Tellier
1:40 Tuesday August 25

OBN projects are taking an increasing market share over towed streamer surveys. Despite significantly higher costs of operation, OBN enable flexible layout strategies (e.g., for the recording of long multi-azimuth offsets), seismic wavefield recording with high signal-to-noise ratio (stationary sensors located in a low-noise environment), broadband signal recording (exceptional deghosting with receiver ghost well separated from the primary signal, in combination with dual pressure and velocity sensing), the recording of PS waves and a better repeatability for 4D surveys. Until now all OBN available on the seismic market have been equipped with 3C omni-tilt 15Hz geophones however a recently released node offers 3C MEMS sensors as an alternative. MEMS are renowned for their ability to record seismic signal with true amplitudes and phases, from DC to 800 Hz, contrary to geophones whose sensing fidelity varies with manufacturing tolerances, ageing and temperature. In addition, the third generation of MEMS (Lainé 2014, Fougerat 2018) has overcome the low-frequency limitations associated with previous generations. A recent field test could demonstrate that contrary to the case with 3C geophones, 3C MEMS have in addition the ability to measure particle motion along truly vertical and horizontal axes, which is a major benefit for OBN applications.

Assessing the value of source-over-streamer acquisition in the Barents Sea
Krzysztof Cichy
11:00 Wednesday August 26

We will present an innovative new-generation TopSeis acquisition with dense near-offset illumination and long offsets for FWI applied in a 5000 km2 area over the Greater Castberg area in the Barents Sea. We will highlight how accurate deblending was a key processing step to uncover the potential of these blended data. We will also examine decimation tests so as to compare with conventional and short-offset conventional acquisition approaches. We will also show several examples of the first fast-track volume and compare with vintage data from the area.


Multi-Client Data - Greater Castberg

Greater Castberg Survey

A new TopSeis survey, acquired with TGS, bringing high-resolution seismic insight to the Barents Sea .
Sercel (External Link)

Sercel

As the worldwide leader in the seismic acquisition industry, Sercel designs, manufactures and supports the most advanced seismic acquisition systems available.
Subsurface Imaging - Ocean Bottom Seismic

Ocean Bottom Seismic

CGG are leaders in the processing and imaging of every kind of ocean bottom seismic (OBS), ocean bottom node (OBN), ocean bottom cable (OBC) and permanent life-of-field (LoFS) data.

CGG

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