TGS Q2 2011 webcast and teleconference

ASKER, NORWAY (28 July 2011) - TGS will present the financial results for Q2 2011 on 4 August 2011.

Robert Hobbs (CEO) and Kristian Johansen (CFO) will present the results at 08:30 CET 4 August 2011 at Shippingklubben located at Haakon VII's gt 1 in Oslo, Norway.  The presentation is open to the public and can also be followed live on the internet at www.tgsnopec.com streamed by Webcast Norge.

The slides from the presentation will also be available in PDF format at both the TGS and Oslo Stock Exchange websites and a recorded version of the presentation will be available shortly thereafter at www.tgsnopec.com.

CEO Robert Hobbs and CFO Kristian Johansen will also host a conference call on 4 August 2011 at 15:00 CET Norway time (9:00 AM New York time).   Attendees may want to call 5-10 minutes before 15:00 CET (9:00 AM NY) to ensure registration and access.

• Norwegian attendees are invited to call +800 19641 or +47 2415 9757
• International attendees are invited to call 0800 032 3808  or +44 (0)20 7138 0843
• US attendees are invited to call +1 866 850 2201

Participants will need to quote the following confirmation code when dialing into the conference: 3885488.

A Q&A session will follow a short introduction, based upon the presentation issued in the morning. To pose a question, please press *1.

A replay of the conference call will be available shortly after. To access replay of the TGS conference call,

• dial +47 2100 0498 (Norway) or +44 (0)20 7111 1244 (International) or +1 347 366 9565  (US)
• replay access code 3885488 followed by # (pound-sign)

A replay of the conference call will also be available at www.tgsnopec.com.