CGG Vessels Secure an Acquisition Backlog Worth an Additional $75M PARIS, April 19 /PRNewswire-FirstCall/ -- Compagnie Generale de Geophysique (ISIN: FR0000120164, NYSE: GGY) announced that two of its vessels have each secured a strong backlog of acquisition work. Both vessels, CGG Alize and CGG Harmattan, have won contracts for a full season of work in the North Sea, lasting from May to September, before sailing for Brazil to acquire six-month projects for Petrobras. In the North Sea, the CGG Alize, which recently completed its project offshore India, will operate for the next four months to conduct a high-density 4D survey for Statoil. This new award follows on from similar projects conducted for Statoil in 2004. The CGG Harmattan has been awarded a series of contracts including 3D work for Wintershall in the Netherlands and 4D projects for Apache and BP in the North Sea. To conduct these projects, totalling almost four months of activity, the CGG Harmattan will be able to draw on its experience of shooting 3D and 4D projects in field production areas in Brazil and Mexico in recent years. In Brazil, the two vessels will acquire over 6,000 sq km of new seismic data in the Campos and Santos Basins. The CGG Alize will shoot the Santos survey with a ten-streamer configuration. The flexibility of the CGG Harmattan, which will join the CGG Alize in Brazil early next year, made it the obvious choice for shooting the Campos survey in shallow water depths ranging from 25 to 200 m. Luc Benoit-Cattin, Executive Vice President of Offshore Services, said: "These awards confirm the strong upturn in marine seismic activity and reinforce our confidence for 2006." 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. The Compagnie Generale de Geophysique group is a global participant in the oilfield services industry, providing a wide range of seismic data acquisition, processing and geoscience services and software to clients in the oil and gas exploration and production business. It is also a global manufacturer of geophysical equipment. DATASOURCE: Compagnie Generale de Geophysique CONTACT: Christophe Barnini, +33-1-64-47-38-10,

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