The Heimdal Terrace OBN survey, located north of the Utsira OBN survey in the North Sea, will cover an additional 500 sq km area under receivers (AUR), expanding contiguous multiclient OBN coverage in the region to 3,778 sq km AUR.
This area includes the Balder and Ringhorne fields, both undergoing redevelopment; the Iving/Evra and Enniberg discoveries; and surrounding infrastructure-led exploration areas that could deliver tiebacks to existing infrastructure.
TGS will operate the acquisition phase, due to start this April, while CGG will apply its OBN processing and imaging technology, including time-lag full-waveform inversion, to create a 3D volume designed to improve the resolution and structural definition of the region’s complex geology and reservoirs.
Final processed deliverables should be issued by the end of second-quarter 2024.
In addition, TGS announced it signed a letter of agreement to perform a sparse OBN survey in the US Gulf of Mexico (GoM). Mobilization for the 100-day program should begin this spring.
In its latest results review, TGS included details of recent projects conducted by OBN acquisition and technology specialist Magseis Fairfield, which it acquired in early January.
During October 2022, the ZXPLR 1 crew started a new program offshore Guyana. While in December, the ZXPLR 2 crew began acquisition of the TGS multiclient project Amendment II in the US GoM.
Magseis Fairfield will become a separate business unit within the TGS group, and various technology and data expansion initiatives are underway, such as 4D, production seismic and converted contracts solutions to the TGS portfolio.