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What on Earth is Geophysics?

What We Do

Geophysics is the application of physical principles to study the Earth's structure and fluid movements.

CGG deploys a range of highly sophisticated geophysical techniques both onshore and offshore to deliver highly accurate images of the Earth's subsurface to our clients.

These images are used to help pinpoint the presence of natural resources, such as oil, gas and other minerals. Seismic is our main working method but other methods based on gravity, electricity or magnetics may also be used.

The seismic method is comparable to CAT-scan or ultrasound techniques. Specialized seismic equipment is deployed to generate acoustic waves into the ground using different methods such as vibrations and explosions on land or compressed air at sea. These waves are reflected by the different geological layers in the subsurface and recorded as seismic data by a network of highly sensitive sensors laid out on the surface.

Extremely complex processing sequences are run on very powerful computers to convert this data into seismic images in two, three or four dimensions. Sophisticated software helps the geophysicist to reconstruct the shape and physical properties of the geological layers.