TGS to Release an Update on Q4 2015 and Financial Guidance for 2016 - 7 January 2016

ASKER, NORWAY--(Marketwired - Dec 21, 2015) - TGS will release a preliminary update on Q4 2015 operating revenues, as well as financial guidance for 2016 before opening of the Oslo Stock Exchange on 7 January 2016. In connection with this CEO Robert Hobbs and CFO Sven Børre Larsen will host a conference call the same day at CET 3:00pm (9:00 AM New York time).

Call-in details are as follows:

Attendees may want to call 5-10 minutes before 3:00 CET (9:00 AM NY) to ensure registration and access.

• Norwegian attendees are invited to call +800 56053 or +47 2316 2729
• International attendees are invited to call 0800 279 5004 or +44 (0)20 3427 1900
• US attendees are invited to call +1 877 280 2296

Participants will need to quote the following confirmation code when dialing into the conference: 3630842

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 the TGS conference call,

• Dial +47 2100 0498 (Norway) or +44 (0)20 3427 0598 (UK) or +1 866 932 5017 (US)
• Replay access code is 3630842 followed by the # (pound sign)

A replay of the conference call will also be available at www.tgs.com.

Company summary

TGS-NOPEC Geophysical Company (TGS) provides multi-client geoscience data to oil and gas Exploration and Production companies worldwide. In addition to extensive global geophysical and geological data libraries that include multi-client seismic data, magnetic and gravity data, digital well logs, production data and directional surveys, TGS also offers advanced processing and imaging services, interpretation products, and data integration solutions.

For more information visit TGS online at www.tgs.com.

Forward-looking statements and contact information

All statements in this press release other than statements of historical fact are forward-looking statements, which are subject to a number of risks, uncertainties and assumptions that are difficult to predict, and are based upon assumptions as to future events that may not prove accurate. These factors include TGS' reliance on a cyclical industry and principle customers, TGS' ability to continue to expand markets for licensing of data, and TGS' ability to acquire and process data products at costs commensurate with profitability. Actual results may differ materially from those expected or projected in the forward-looking statements. TGS undertakes no responsibility or obligation to update or alter forward-looking statements for any reason.

TGS-NOPEC Geophysical Company ASA is listed on the Oslo Stock Exchange (OSLO: TGS).

TGS sponsored American Depositary Shares trade on the U.S. over-the-counter market under the symbol "TGSGY".