TGS, a leading global provider of energy data and intelligence, has commenced reprocessing of the Liberia Sunfish 3D (Vision) seismic survey in the Harper Basin, offshore Liberia. The project is supported by industry funding and forms part of TGS’ continued commitment to advancing exploration readiness across frontier basins.
The Sunfish 3D survey covers approx. 6,100 sq kms and was originally acquired by TGS in 2013. The project will deliver a full 3D Kirchhoff Pre-Stack Depth Migration from field tapes, applying modern imaging workflows to enhance data quality and subsurface understanding. Final products are scheduled for release in the third quarter of 2026.
The reprocessed dataset is designed to deliver clearer imaging of Upper Cretaceous plays, with a strong focus on preserving the fidelity of AVO response throughout the data. This enables exploration teams to apply advanced reservoir characterization workflows with greater confidence, supporting more robust prospect evaluation in this complex setting.
David Hajovsky, Executive Vice President of Multi-Client at TGS commented, 'Reprocessing the Sunfish 3D survey represents an important step in maturing exploration readiness in the Harper Basin. This project is part of our broader, long-term commitment to rejuvenating the subsurface data foundation across Liberia and supporting informed, data-driven exploration decisions in this underexplored basin.'
This project is part of a broader, multi-year campaign by TGS in collaboration with National Oil Company of Liberia (NOCAL) to rejuvenate the offshore Liberia seismic data portfolio. Upon completion, TGS will have reprocessed all available 2D and 3D seismic data in offshore Liberia, comprising of more than 50,000 kilometers of 2D seismic and over 31,000 square kilometers of 3D seismic through advanced modern pre-stack depth migration workflows. This effort underscores TGS’ long-term commitment to supporting exploration activity and data-driven decision-making in Liberia and the wider West African margin.
Reprocessing of the Liberia Sunfish 3D covers approximately 6,100 sq. km and final product release is scheduled for Q3 2026
Source: TGS
