TGS Commences Multi-Client 2D Survey Offshore Northwest Alaska

TGS Commences Multi-Client 2D Survey Offshore Northwest Alaska 
HOUSTON, TX -- (Marketwired) -- 09/09/13 --  TGS has commenced
acquisition of a 2D multi-client survey in the Chukchi Sea off the
northwest coast of Alaska. The Chukchi Sea 2D 2013 survey covers
approximately 8,000 km and builds on the existing Chukchi Sea
(CSR-06) survey acquired in 2006 in Russian waters and the AWI
Chukchi Sea (AWI08) survey acquired in 2008. 
"TGS is very pleased to be back in the Chukchi Sea," stated Rod
Starr, Senior Vice President Western Hemisphere for TGS. "This
project was implemented following productive cooperation with local,
state and federal agencies as well as local community stakeholders.
The data will provide critical subsurface information for the
scheduled BOEMRE lease rounds beginning in 2016."  
The seismic data is being acquired by the M/V Geo Arctic. Data
processing will be performed by TGS and will be available to clients
in Q2 2014. 
This 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 
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
TGS-NOPEC Geophysical Company ASA is listed on the Oslo Stock
Exchange (OSLO: TGS). 
TGS sponsored American Depositary Shares trade on the U.S.
over-the-counter market under the symbol "TGSGY". 
For additional information about this press release please contact:  
Kristian Johansen
Chief Financial Officer
Cell: +47 47 60 33 34
Will Ashby
Director Investor Relations and M&A
Tel: +1 713 860 2184
Rod Starr
Senior VP Western Hemisphere
Tel: +1 713 860 2100
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