Webcast
TGS-NOPEC will publish its Q3 2009 results at 08.00 Norwegian time on the morning of October 29th, 2009. At the same time, a recorded audio and slide presentation by CEO Robert Hobbs and CFO Arne Helland will be made available at www.tgsnopec.com.

The slides from the presentation will also be available in PDF format at both the TGS and Oslo Stock Exchange websites.

Conference Call
CEO Robert Hobbs, VP Business Development Karen El-Tawil and CFO Arne Helland will also host a conference call on October 29th. at 14.00 Norwegian time (9.00 AM New York time). Norwegian attendees are invited to call 800 80 119 and international attendees are invited to call +47 23 000 400. Attendees may want to call 5-10 minutes before 14.00 (9.00 AM NY) hours to ensure registration and access. 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 TGS-NOPEC`s conference call, 
· dial +47-67 89 40 91 
· account no: 1193 followed by # (pound-sign) 
· press 1 Conference no: 193 followed by # (pound-sign) 
· press 1 to play.

Please call Arne Helland at +47 91 88 78 29/+47 66 76 99 00 or Karen El-Tawil at +1 713 860 2100 should you need more information.