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Hitt og þetta 24. apríl 2006

TGS-NOPEC Q1-2006 Webcast and Teleconference

TGS-NOPEC will publish its Q1 2006 results before 09,00 Norwegian time on the morning of May 3rd, 2006. At the same time, a recorded presentation with Audio by CEO Hank Hamilton and CFO Arne Helland will be made available at www.tgsnopec.no

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

CEO Hank Hamilton, VP Business Development John Adamick and CFO Arne Helland will also host a conference call on May 3rd. At 15,00 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 15,00 (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 accountno: 1193 followed by # (pound-sign) press 1 Conferenceno: 193 followed by # (pound-sign) press 1 to play.

Please call Arne Helland at +47 31 29 20 00/+47 91 88 78 29 should you need more information about this.