2013-01-07 07:53:38 -

CALGARY, CANADA (7 January 2013) - TGS, through its wholly-owned subsidiary
Arcis Seismic Solutions, has commenced acquisition of a 3D multi-client onshore
survey, Ille Lake, covering 180 km(2) (70 mi(2)) in the deep basin of Central
Alberta, Canada.

The Ille Lake survey is optimized and designed to evaluate multiple zones from
the Cardium and the Upper & Lower Mannville (Glauconite, Ostracod & Basal Quartz
Oil), through to the newly emerging Duvernay unconventional play.  In addition
to the survey's optimal acquisition parameters, Arcis provides proprietary tools
that will enhance imaging and rock property assessments for even greater
assistance with the placement of horizontal wells.

The seismic data will be processed by Arcis and final data will be available to
the industry in Q1 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
Office: +47 667 69931
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

Rod Starr
Senior VP Western Hemisphere
Tel: +1 713 860 2100
Email: rod.starr@tgs.com


This information is subject of the disclosure requirements acc. to §5-12 vphl
(Norwegian Securities Trading Act)




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Source: TGS via Thomson Reuters ONE
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