OSLO, Norway (15 July 2025) TGS, a global leader in energy data and intelligence, in collaboration with Axxis Multi-client AS and Viridien, have announced their successful completion of the final imaging of OMEGA Merge, to deliver a single, seamless and unified high-quality dataset across the Heimdal Terrace, Utsira, and Sleipner Ocean Bottom Node (OBN) multi-client surveys.
Spanning a total area of 3,700 square kilometers from the deployment of over 250,000 nodes and 9.5 million shots, OMEGA Merge is the largest continuous OBN dataset on the Norwegian Continental Shelf.
To ensure the highest-quality data imaging across the boundaries of the Utsira, Sleipner, and Heimdal OBN surveys, the data underwent pre-migration matching to ensure consistency in time, phase, amplitude, and frequency content. The velocity model was then unified using Viridien’s advanced time-lag full-waveform inversion (TL-FWI) and long-wavelength tomography technology. Utilizing this unified model, the data was pre-stack depth-migrated, to produce a seamless and continuous volume that covers the entire OMEGA Merge area.
David Hajovsky, Executive Vice President of Multi-Client commented, “The completion of OMEGA Merge marks a significant step forward in subsurface understanding of this complex region. By unifying these OBN surveys, we are delivering a seamless, high-resolution dataset. With this, our customers gain significantly improved resolution and structural continuity to de-risk subsurface interpretation and accelerate prospect evaluation.”
The final dataset brings substantial improvements in resolution and structural clarity, revealing previously unseen exploration targets and providing greater confidence in prospect understanding compared to vintage seismic data. The dataset is now available for licensing.
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