ASKER, NORWAY (9 January 2014) - Based on preliminary reporting from operating units, TGS management expects net revenues for the fourth quarter of 2013 to be approximately USD 270 million, bringing total estimated net revenues for 2013 to approximately USD 882 million. The company has previously guided full year revenues of USD 810 - 870 million, and the positive deviation is mainly caused by record high late sales in the fourth quarter.

Multi-client investments for the fourth quarter are expected to be approximately USD 90 million, to reach full year investments of approximately USD 437 million.

Management will give a full report of Q4 results on 6 February 2014.