TGS Announces New Multi-Client 2D Survey in Northeast Greenland

ASKER, NORWAY--(Marketwire - Sep 6, 2011) - TGS has commenced a new 1,000 km multi-client 2D survey in Northeast Greenland in partnership with Fugro.

This survey will enable customers to prepare for the announced Greenland Licensing Round in 2012/2013 and will significantly add to a data set that TGS has been growing since 2008 in this promising region. After this year's data acquisition, TGS will be able to offer approximately 4,500 km of new multi-client 2D data, a large volume of reprocessed multi-client 2D data and full coverage of aeromagnetic/gravity data over the basins that are to be included in the planned licensing round.

The new seismic data is being acquired by the M/V Akademik Shatskiy supported by the ice breaker M/V Fennicia and is scheduled to complete during Q4 2011. Data processing will be performed by TGS and data will be available to clients during Q1 2012.

The survey is supported by industry funding.

Company summary
TGS-NOPEC Geophysical Company (TGS) provides multi-client geoscience data and services to oil and gas Exploration and Production companies around the globe. TGS' geophysical and geological data products include multi-client seismic libraries, permanent reservoir monitoring, magnetic and gravity data, the industry's largest global database of digital well logs and regional interpretive products. TGS also provides high-end depth imaging services to help resolve complex seismic imaging problems. For more information visit TGS online at www.tgsnopec.com.

Forward-looking statements and contact information
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).