TGS-NOPEC announces 2005 Capital Markets Day

03 March 2005OSE

Naersnes, Norway (3 March, 2005) - TGS-NOPEC Geophysical Company (OSLO:TGS) announced today the details of its 2005 Capital Markets Day for members of the investment community. The event will take place in Houston, Texas on May 4th during the annual Offshore Technology Conference (OTC).

Following a presentation summarizing TGS' First Quarter 2005 results, business unit managers will present multi-client seismic activities in the North/South America and Africa/Middle East/Asia-Pacific regions, TGS Imaging, and A2D Technologies.

The 2005 TGS-NOPEC Capital Markets Day will be held from 11:30 AM to 5:00 PM on Wednesday, May 4th at The Houstonian Hotel (111 North Post Oak Lane) in Houston, Texas. To RSVP for the event, please contact Ryan Clark, (281) 685-3751 (USA); or Maywen King +47 31 29 20 52 or (EUR).

TGS-NOPEC Geophysical Company (TGS) is a leading global provider of multi-client geoscientific data, associated products and services to the oil and gas industry. TGS specializes in the creation of non-exclusive seismic surveys worldwide. The company also provides advanced depth imaging solutions and software through its TGS Imaging division. A2D Technologies, a wholly-owned subsidiary, is the energy industry's well log data marketplace offering the largest online database, immediate delivery, conversion services, data management services and worldwide well log data sourcing. The TGS family of companies places a strong emphasis on providing high-quality data and the highest level of service to the industry. All statements in this press release other than statements of historical fact are forward-looking statements, which are subject to a number of risks, uncertainties and assumptions that are difficult to predict, and are based upon assumptions as to future events that may not prove accurate. These factors include TGS' reliance on a cyclical industry and principal customers, TGS' ability to continue to expand markets for licensing of data, and TGS' ability to acquire and process data products at costs commensurate with profitability. Actual results may differ materially from those expected or projected in the forward-looking statements. TGS undertakes no responsibility or obligation to update or alter forward-looking statements for any reason. TGS-NOPEC Geophysical Company ASA is listed on the Oslo Stock Exchange (OSLO:TGS).

John Adamick
Senior VP, Geological Products and Services
Tel: +1 713 860 2100