On July 19th, 2017, CGG announced that they had won the award to process seismic data from the 3D
bottom node. This is a survey in the Brazilian deep water, a potential oil drilling site and it covers 2180
square kilometer area in the Santos Basin. CGG earns a contract in Brazil for the biggest seismic survey in
a seabed which is the largest node ever acquired in the industry. The Ocean Bottom Node data will be
processed in Rio de Janeiro. It will be handled in the center with the greatest expertise and a center with
the largest computer capacity in the region.

 

Why CGG

The CEO of the CGG said that the choice to award CGG the contract was natural because of their in
depth geological knowledge of the basin and because of their recognized track record and advanced
technology for ocean bottom node processing. He also added that they would work alongside the
seabed geo-solutions to deliver best images.

 

Meaning of Seismic Survey

What does seismic survey mean? The seismic survey is used by oil and gas explorers in potential oil
drilling site to produce pictures of rock types and the locations of the rocks in the earth’s surface. The
images are usually very detailed, and the information is used to determine the location of the gas and oil
reservoirs as well as the size of these reservoirs.

To do this sound waves are sent to the rocks; the sound then bounces back as echoes and are captured
by sensors and recorded. The experts then analyze the time the waves took to return. This analysis
provides vital information about the types of rocks and the possibility of the existence of valuable gas or
fluids in the rocks. This can be compared to the use of ultra sound in medicine.

Seismic processing hence requires very powerful computers and specialized skills alongside
sophisticated software to bear fruits. The computers only do the processing work, but the interpretation
is left to the experts called geophysicist. The results are then compared with other existing data to
enhance accuracy.

 

How safe is the marine life?

CGG earns uses extensive environmental management plans that ensure that the offshore operations
are conducted responsibly and safely. The company ensures that its operation in qsites is safe
for the environment. The surveys cannot be conducted when certain species are close to the source of
the sound. The experts ensure that marine animals move away. Ships move slowly to provide time for
the animals to get away.

CGG conducts their surveys safely and does not harm marine life in any way. The seismic survey does
not cause any long term impact on the behavior of the marine animals; it does not result in any hearing
effects and no coral damage.Therefore, CGG earns the contract in Brazil for the biggest seismic survey
in a seabed because they qualify for the job.