The NAN HAI 502 is presently operating for TGS-NOPEC acquiring TGS-NOPEC’s first non-exclusive survey in Sierra Leone, Africa. She will replace Zephyr-1 in Portugal when this vessel transfers to NW-Europe for operations in Scandinavia in late April.
NAN HAI 502 first project will be 5,000 km (+ 4000 km optional) in Portugal completing the regular seismic grid acquired in preparation and as basis for the first bid-round offshore Portugal expected to be announced later this year. So far, approximately 10,500 km has been acquired by TGS-NOPEC offshore Portugal and 4,000 km have been reprocessed. The NAN HAI operations will cover shelf-areas ranging in water-depths from 200 to 3500 m.
TGS-NOPEC is a leading global provider of non-exclusive seismic data and associated products to the oil and gas industry. Oil companies use this seismic data to explore for and develop oil and gas deposits. TGS-NOPEC specializes in the planning, acquisition, processing, interpretation, and marketing of non-exclusive surveys worldwide. The company places a strong emphasis on providing high quality seismic data and the highest level of service to the industry. TGS-NOPEC also offers proprietary seismic acquisition and processing services, as well as gravity and aeromagnetic surveys.
Recommended Reading
-
TGS is pleased to announce APEX 1, a first-of-its-kind, next-generation multi-client long-offset OBN acquisition campaign in the Gulf of America.
Read More -
OSLO, Norway (9 January 2026) – TGS ASA (“TGS”), a leading global provider of energy data and intelligence, routinely publishes a quarterly operational update six working days after quarter-end. The...
Read More