CGG

Earnings Release • Oct 8, 2015

CGG provides its Vessel Utilization for the Third Quarter of 2015

Paris, France – 8 October, 2015

Vessel utilization for the third quarter 2015:

The vessel availability rate¹ was 84%.This compares to a 74% availability rate in the second quarter of 2015 and a 92% rate in the third quarter of 2014.

The vessel production rate² was 92%.This compares to a 94% production rate in the second quarter of 2015 and a 92% rate in the third quarter of 2014.

Fleet allocation update for the third quarter 2015:

During the third quarter of 2015, our 3D vessels were allocated 33% to multi-client programs.

1 - The vessel availability rate, a metric measuring the structural availability of our vessels to meet demand; this metric is related to the entire fleet, and corresponds to the total vessel time reduced by the sum of the standby time, of the shipyard time and the steaming time (the "available time"), all divided by total vessel time;

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2 - The vessel production rate, a metric measuring the effective utilization of the vessels once available; this metric is related to the entire fleet, and corresponds to the available time reduced by the operational downtime, all then divided by available time.

About CGG

CGG (www.cgg.com) is a fully integrated Geoscience company providing leading geological, geophysical and reservoir capabilities to its broad base of customers primarily from the global oil and gas industry. Through its three complementary business divisions of Equipment, Acquisition and Geology, Geophysics & Reservoir (GGR), CGG brings value across all aspects of natural resource exploration and exploitation. CGG employs over 7,500 people around the world, all with a Passion for Geoscience and working together to deliver the best solutions to its customers.

CGG is listed on the Euronext Paris SA (ISIN: 0000120164) and the New York Stock Exchange (in the form of American Depositary Shares. NYSE: CGG).

Contacts

Group Communications Christophe Barnini Tel: + 33 1 64 47 38 11 E-Mail: : invrelparis@cgg.com Investor Relations Catherine Leveau Tel: +33 1 64 47 34 89 E-mail: : invrelparis@cgg.com