Italian Well Logs Now Available Through TGS' LOG-LINE Plus!(R) in LAS Format

HOUSTON, TX--(Marketwire - August 31, 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.

TGS-NOPEC Geophysical Company (TGS) is a principal resource for global geoscientific data products and services in the E&P industry. TGS specializes in the design, acquisition and processing of multi-client seismic surveys worldwide and delivers advanced high performance seismic imaging and software solutions. The Company also provides the world's largest online well-log database, well data management services, multi-client interpretive products and subsurface consulting services to industry. The suite of integrated exploration data products available from TGS is distinctive and unmatched. The Company philosophy is to create unique high-quality data collected in the right place at the right time.

TGS-NOPEC Geophysical Company ASA is listed on the Oslo Stock Exchange (OSLO: TGS).

Visit TGS-NOPEC Geophysical Company online at www.tgsnopec.com

Contact Information: For more information please contact: John Adamick Senior VP, Geologic Products Tel: +1 713 860 2100 Email: Karen El-Tawil VP, Business Development Tel: +1 713 860 2100 Email: