Acquisition has Resumed on the TGS Freedom Wide Azimuth Project

TGS-NOPEC Geophysical Company (TGS) announced today that it, in conjunction with co-operation partner WesternGeco, has resumed data acquisition on the Freedom Wide Azimuth multi-client project in the Mississippi Canyon area of the Gulf of Mexico utilizing a higher capacity operation that includes two recording vessels, each towing 10 streamers.

Covering approximately 15,000 square kilometers, Freedom is the one of the largest wide azimuth programs in the world. Data acquisition originally commenced in January of 2008, but had been temporarily interrupted since October of 2008. Located in a highly prolific area in the Gulf of Mexico, the well-funded project is currently 50% complete, and field operations are on schedule for completion in August 2009. TGS has delivered preliminary products to participating oil companies.

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.

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)

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