Press Releases

Italian well logs now available through TGS’ LOG-LINE Plus!® in LAS format

Houston, TX (31 August, 2009) The Geological Products division of TGS-NOPEC Geophysical Company (TGS) is pleased to announce the addition of well logs from Italy to its commercial database. The approximately 2,500 Italian wells are available in industry standard LAS format through LOG-LINE Plus!®

"Geologists come to us for well log data for two primary reasons: data quality and ease of access," commented John Adamick, Senior VP Geologic Products. "Even from countries where the data is in the public domain, such as Italy, our customers have found tremendous benefit in choosing to license digital, quality controlled curves from TGS."

TGS' global well database includes over 5.6 Million logs and other borehole data from key hydrocarbon provinces worldwide. The data is available online via LOG-LINE Plus!®, a data repository with search, order and download capabilities.

Wells-Blocks-Italy

About TGS

TGS provides multi-client geoscience data to oil and gas Exploration and Production companies worldwide. In addition to extensive global geophysical and geological data libraries that include multi-client seismic data, magnetic and gravity data, digital well logs, production data and directional surveys, TGS also offers advanced processing and imaging services, interpretation products, and data integration solutions.

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 product 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.

Sven Børre Larsen

Sven Børre Larsen

Chief Financial Officer

Tel: +47 90 94 36 73

Ellen Munkvold

Ellen Munkvold

IR Coordinator

Tel: +47 97 76 26 25