Sercel Acquires Quest Geo

Paris, December 15, 2008

CGGVeritas (ISIN: 0000120164 – NYSE: CGV) announced today that its subsidiary
Sercel has entered into a private transaction to purchase all existing shares in Quest
Geo Solutions Limited (“Quest”), a UK-based software company, for a cash
consideration.

The acquisition continues to broaden Sercel’s product offering and comes as a logical
extension to the existing partnership between the two companies, whereby Sercel
distributes Quest navigation software such as Triggerfish and Geometis. It also
provides Sercel with increased development and support resources for its navigation
software division and its newly released SeaPro Nav product.

About CGGVeritas

CGGVeritas (www.cggveritas.com) is a leading international pure-play geophysical company delivering a wide range of technologies, services and equipment through Sercel, to its broad base of customers mainly throughout the global oil and gas industry. CGGVeritas is listed on the

Euronext Paris SA (ISIN:0000120164) and the New York Stock Exchange (in the form of American Depositary Shares, NYSE: CGV).

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