PARIS, August 23 /PRNewswire-FirstCall/ -- CGG (ISIN : 0000120164 - GEPH.PA - NYSE : GGY) will release its 2nd quarter 2006 financial results on Thursday September 7th 2006, before the opening of the Paris and New York stock exchanges. - Robert BRUNCK, Chairman and CEO, will comment on the results during a public presentation at 10:00 am - at Palais Brongniart - Place de la Bourse (entry in front of No 40 rue Notre Dame des Victoires) PARIS 2nd. - a press release will be available on our website : http://www.cgg.com/ at 8:00 am on this date. - an English language conference call is scheduled at 4:00 pm (Paris time) - 9:00 am (US CT) - 10:00 am (US ET) To take part in the English language conference, simply dial five to ten minutes prior to the scheduled start time. - International call-in +1-913-981-5542 - US call-in (800)-289-0569 - Replay international +719-457-0820 - access code 741 35 86 - Replay US (888)-203-1112 - access code 741 35 86 - You will be asked for the title of the conference: "CGG 2nd quarter & Half-Year 2006 Results" and the name of the Chairman of the Board of Directors: "Robert Brunck". - Copies of the presentation will be posted on the company web site and can be downloaded. The conference call will be broadcast live on CGG's website and replay will be available for 7 days thereafter. 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 through its subsidiary Sercel. Contact : Christophe BARNINI (+33)-1-64-47-38-10/38-11 Email : DATASOURCE: Compagnie Generale de Geophysique (CGG) CONTACT: Contact : Christophe BARNINI (+33)-1-64-47-38-10/38-11, Email :

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