TGS Announces Expansion of Multi-client 3D Survey in the Faroe Shetland Basin

ASKER, NORWAY (6 June 2012) - TGS commences expansion of a 3D multi-client survey covering 2,000 km(2) in the Faroe Shetland Basin spanning the UK Faroe median line.  The acquisition is in partnership with PGS and is completion of the previously announced FSB11 survey. The new seismic data is being acquired by the PGS Ramform Viking towing 12 X 6,000 m with 75 m separation and utilizes PGS' GeoStreamer® Technology.  The new 3D data will play a critical role in the development of the Cambo and Tornado fields and provides new data coverage across exploration blocks applied for in the recent UK 27(th) License Round. Data processing will be performed by both TGS and PGS and be available to clients in Q2 2013. 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 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). For additional information about this press release please contact: Kristian Johansen Chief Financial Officer Office: +47 66 76 99 00 Cell: +47 47 60 33 34 Email: Karen El-Tawil VP, Business Development Office: +1 713 860 2102 Email: Stein Ove Isaksen Senior VP Eastern Hemisphere Office: +47 66 76 99 00 Email: This information is subject of the disclosure requirements acc. to §5-12 vphl (Norwegian Securities Trading Act) This announcement is distributed by Thomson Reuters on behalf of Thomson Reuters clients. The owner of this announcement warrants that: (i) the releases contained herein are protected by copyright and other applicable laws; and (ii) they are solely responsible for the content, accuracy and originality of the information contained therein. Source: TGS via Thomson Reuters ONE [HUG#1617459]