CGG Full Year and 4th Quarter Unaudited Revenues PARIS, February 16 /PRNewswire-FirstCall/ -- Compagnie Generale de Geophysique (ISIN: FR0000120164 ; NYSE : GGY) reports unaudited 2004 total revenues estimated at euros 693 million (US$ 862 million), up 13% in euros and up 25% in US$ compared to 2003 (euros 612 million or US$ 689 million). Total revenues for the 4th quarter 2004 were euros 204 million (US$ 264 million), up 30% in euros and up 42% in US$ compared to the 4th quarter 2003 (euros 158 million or US$ 186 million). The backlog as of February 1st 2005 stands at US$ 455 million compared to US$ 435 million at November 1st 2004 and US$ 278 million at February 1st 2004. CGG's 2004 audited financial results will be released on March 9th 2005. The information included herein contains certain forward-looking statements within the meaning of Section 27A of the securities act of 1933 and section 21E of the Securities Exchange Act of 1934. These forward-looking statements reflect numerous assumptions and involve a number of risks and uncertainties as disclosed by the Company from time to time in its filings with the Securities and Exchange Commission. Actual results may vary materially. DATASOURCE: Geophysique CONTACT: Contact : Christophe BARNINI +33-1-64-47-38-10 Email : Internet : http://www.cgg.com/

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