ASKER, NORWAY (8 October 2012) - Based on preliminary reporting from operating units, TGS management now expects net revenues for the third quarter of 2012 to be approximately USD 244 million, bringing estimated net revenues for the first nine months of 2012 to approximately USD 650 million, 52% higher than the first nine months of 2011. Multi-client investments for the third quarter are expected to be approximately USD 139 million. As a result of the Company’s Q3 performance and a preliminary forecast for Q4, management now believes full-year 2012 revenues will be between USD 870-910 million. Management will give a full report of Q3 results on 1 November 2012.