TGS-NOPEC

TGS-NOPEC (OSL:TGS) Houston, Texas, Asker, Norway (January, 22, 2009) - TGS-NOPEC Geophysical Company (TGS) announced today that it has completed several new multi-client higher order depth imaging projects that will be used to evaluate hydrocarbon potential in areas of the Central Gulf of Mexico prior to the Lease Sale in March 2009.

TGS-NOPEC (OSL:TGS) TGS has today sold all its 13,112,200 shares (10.1%) in Wavefield-Inseis ASA to CGGVeritas at NOK 15.17 per share. Balance held after the transaction is zero.

TGS-NOPEC (OSL:TGS) TGS will present at the SEB Enskilda Nordic Seminar in Copenhagen today, January 7th 2009.

TGS-NOPEC (OSL:TGS) Asker, Norway (January 6, 2009) - TGS-NOPEC Geophysical Company (TGS) announced today that it has begun acquiring a new 8,600-kilometer multi-client survey offshore West Africa, consisting of long offset 2D seismic, gravity, and magnetic data.

TGS-NOPEC (OSL:TGS) Asker, Norway, Houston, Texas (January 5, 2009) - TGS-NOPEC Geophysical Company (TGS) announced today that it is acquiring a new Multi-Client 3D survey in the DeSoto Canyon area of the Gulf of Mexico. Named "Hernando", the new survey covers a 300 OCS block (6,900 sq. km) area.

TGS-NOPEC (OSL:TGS) TGS-NOPEC Geophysical Company ASA bought back 35,000 TGS shares in the market on Monday December 8th 2008. Average price paid was NOK 34.92 per share.

TGS-NOPEC (OSL:TGS) TGS-NOPEC Geophysical Company ASA bought back 170,000 TGS shares in the market on Friday December 5th 2008. Average price paid was NOK 33.56 per share.

TGS-NOPEC (OSL:TGS) Asker, Norway, (November 24, 2008) - The Geological Products and Services division of TGS-NOPEC Geophysical Company (TGS) announced today that it has commenced a new multi-client interpretive study of offshore Brazil utilizing the company's proprietary Facies Map Browser (FMB) application. The FMB allows explorationists to visualize the distribution of and relationship between the various elements of a petroleum system within a depositional basin.

TGS-NOPEC (OSL:TGS) Asker, 9. November 2008. TGS and Wavefield have today agreed to settle the dispute related to the merger process between the two companies. Under terms of the settlement, Wavefield will pay USD 12.5 million to TGS and TGS will charter a 2D vessel from Wavefield at favorable rates for an 18 month period beginning in April 2009. TGS will also have the option to hire up to 24 months of un-contracted 3D vessel capacity from Wavefield over the next four years at favorable rates, securing Wavefield engagement for vessel capacity. The arbitration process already in progress will be stopped and all claims either party have against the other party, its shareholders, board members, employees or advisors are waived.

TGS-NOPEC (OSL:TGS) TGS has noticed that the numbers in the section in the Earnings Release for Q3 2008 issued this morning commenting on EBIT and EBITDA for Q3 2008 relate to our previously issued Q2-2008 report.