TGS Announces 3D Multi-Client Onshore Survey in South Central Alberta, Canada

TGS Announces 3D Multi-Client Onshore Survey in South Central Alberta, Canada 
CALGARY, CANADA -- (Marketwired) -- 08/22/13 --  TGS, through its
wholly-owned subsidiary Arcis Seismic Solutions, announces a new 3D
multi-client onshore survey, Three Hills East, covering 150 km2 (58
mi2) in the south central plains of Alberta, Canada.  
The Three Hills East survey is designed to evaluate multiple zones
from the Devonian (Nisku), the Mississippian (Banff and Pekisko), and
the Cretaceous (Ellerslie and Ostracod) in the newly emerging
Duvernay play. The survey's optimal acquisition parameters, enhanced
imaging and rock property assessments will provide even greater
assistance with the placement of horizontal wells in this highly
prospective area. 
Permitting is underway and data acquisition is expected to commence
in September 2013. The seismic data will be processed by Arcis and
final data will be available to clients Q4 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 
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
Office: +47 667 69931
Cell: +47 47 60 33 34
Will Ashby 
Director Investor Relations and M&A
Office: +1 713 860 2184
Rod Starr
Senior VP Western Hemisphere
Tel: +1 713 860 2100
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