TGS: TGS Announces Onshore Multi-client 3D Seismic Survey in Oklahoma and Texas

  TGS: TGS Announces Onshore Multi-client 3D Seismic Survey in Oklahoma and
                                    Texas

HOUSTON (15 October 2013) - TGS announces a new 3D multi-client onshore
survey, Rush Creek, covering 161.5 mi^2 in Roger Mills County, Oklahoma and
Hemphill County, Texas that will build on an existing 62 mi^2 3D survey
recently purchased by TGS. Once the volumes are merged, the Rush Creek survey
will total 210 mi^2 and illuminate subsurface targets in the Granite Wash,
Hogshooter, Cleveland Sands, Atoka and Tonkawa geological trends.

Acquisition will begin late Q4 2013 utilizing a high channel count vibroseis
crew. Data processing will be performed by TGS and final data will be
available to clients Q2 2014.

This survey is supported by industry funding.

Company summary

TGS-NOPECGeophysical 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 visitTGS online atwww.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).

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
Email: kristian.johansen@tgs.com

Will Ashby
Director Investor Relations and M&A
Tel: +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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