TGS Commences 3D Multi-Client Seismic Survey Offshore Northwest

TGS Commences 3D Multi-Client Seismic Survey Offshore Northwest
Australia 
PERTH, AUSTRALIA -- (Marketwire) -- 12/13/12 --  TGS has commenced
acquisition of a 3D multi-client seismic survey, The Three Bears,
which covers 460 km2 in the Carnarvon Basin, offshore NW Australia.  
This survey is located adjacent to the Clio and Gorgon gas fields
which are currently in the development stage. Upon completion of this
survey, the TGS portfolio of 3D multi-client coverage will exceed
17,500 km2 in this highly prospective area offshore Australia. TGS is
also reprocessing the Cazadores survey which covers 4,350 km2 of the
Exmouth Plateau region. 
The new seismic data is being acquired by the M/V Geo Caspian. Data
processing will be performed by TGS and will 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 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, permanent
reservoir monitoring and data integration solutions. 
For more information visit TGS online at www.tgs.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). 
For additional information about this press release please contact:  
Kristian Johansen
Chief Financial Officer
Cell: +47 47 60 33 34
Email: kristian.johansen@tgs.com 
Will Ashby
Director Investor Relations and M&A
Office: +1 713 860 2184
Email: will.ashby@tgs.com 
Paul Young 
Managing Director Asia Pacific 
Tel: 61 (8) 9480 0000 
Email: paul.young@tgs.com