TGS has reported the commencement of reprocessing of the Liberia Sunfish three dimensional (3D) (Vision) seismic survey in the Harper Basin, offshore Liberia.
The project is supported by industry funding, the Oslo based geophysical service giant says in a release.
The Sunfish 3D survey covers approximately 6,100 square kilometers 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”, TGS explains.
“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”, TGS notes. “This enables exploration teams to apply advanced reservoir characterization workflows with greater confidence, supporting more robust prospect evaluation in this complex setting.
This project is part of a broader, multi-year campaign by TGS in collaboration with the 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.
