TGS- Notices of AGM and capital markets day Oslo

26 May 2006OSE

The General Assembly will be held on June 14, 2006 at 9,00 at Shippingklubben, Oslo. The Call for the Assembly is posted at the Oslo Stock Exchange and at both in English and Norwegian version.

The 2005 Annual Report is available in digital form at

TGS will host a Capital Markets Day at the same day, June 14, starting at 12.00 at Grand Hotel, Oslo.

Please see invitation and agenda for the Capital Markets Day in Oslo

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 provides advanced depth imaging solutions and software through its TGS Imaging division. Well log data is available for conversion, sourcing, management and immediate delivery through TGS subsidiary, A2D Technologies. Multi-client interpretive products and subsurface consulting services are provided through the Company's Aceca subsidiary. 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).

Arne Helland
Chief Financial Officer
Tel: +47 66 76 99 32/+47 91 88 78 29

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