CGG Announces the Closing of Its Offering of U.S.$165 Million 7 1/2% Senior Notes Due 2015

CGG Announces the Closing of Its Offering of U.S.$165 Million 7
1/2% Senior Notes Due 2015 


PARIS, May 4  /PRNewswire-FirstCall/ -- Compagnie Generale de Geophysique,
("CGG"), (ISIN: FR0000120164 - NYSE: GGY) announces the successful closing of
its offering of U.S.$165 million of 7 1/2% Senior Notes due 2015. The offering,
announced on April 18, 2005, was made in reliance on Rule 144A and Regulation S
under the U.S. Securities Act of 1933 (the "Securities Act"). There was no
offering of notes to the public in France.

The net proceeds will be used to redeem and pay accrued interest on all
outstanding aggregate principal of our existing 10 5/8% Senior Notes due 2007.
We anticipate the redemption of the 10 5/8% Senior Notes due 2007 will occur at
the end of May 2005.

The Senior Notes will not be registered under the Securities Act and may not be
offered or sold in the United States absent registration or an applicable
exemption from the registration requirements of the Securities Act.

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 U.S. Securities Exchange Act of 1934. These forward-looking statements
reflect numerous assumptions and involve a number of risks and uncertainties as
disclosed by CGG from time to time in its filings with the Securities and
Exchange Commission. Actual results may vary materially from those disclosed in
forward-looking statements.

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 (CGG)



CONTACT:  Christophe BARNINI, [phone], 

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