Oslo-listed seismic data specialist TGS has signed an agreement with the Ministry of Hydrocarbon and Mining Development of the Republic of Equatorial Guinea to create an offshore large-scale multi-client seismic megasurvey, according to Splash247. The project represents the first of its kind in the country and aims to reduce exploration risk across key offshore basins.
Project Scope and Timeline
The first phase of the megasurvey will include post-stack reprocessing of approximately 27,273 km of 2D seismic data and around 35,000 sq km of 3D seismic data, with completion expected in the third quarter of 2026. This initial phase is part of a broader plan to create a seamless seismic data product across Equatorial Guinea’s offshore basins. The full product vision encompasses approximately 46,343-line km of 2D seismic data and more than 59,000 sq km of 3D seismic data.
| Phase | 2D Seismic Data | 3D Seismic Data | Completion |
|---|---|---|---|
| Phase 1 | 27,273 km | 35,000 sq km | Q3 2026 |
| Full Vision | 46,343 km | 59,000+ sq km | Not specified |
Importance of Megasurveys
Megasurveys are harmonised 3D seismic datasets covering large contiguous areas. According to TGS, they support more confident geological interpretation, improve understanding of structural and stratigraphic frameworks, and help reduce exploration uncertainty. The Equatorial Guinea megasurvey will apply TGS’s latest imaging technology to address key subsurface challenges.
Industry Implications
David Hajovsky, EVP for multi-client at TGS, stated: “The Equatorial Guinea megasurvey is the first of its kind in the country and will apply TGS’s latest imaging technology to address key subsurface challenges and support exploration risk reduction across the Rio del Rey and Rio Muni basins.” TGS believes that the megasurvey will provide new insight into the prospectivity of Equatorial Guinea’s offshore basins and support informed exploration decision-making.
For commodity traders and analysts tracking oil and gas supply developments, this project signals a potential increase in exploration activity in the region. Improved seismic data can de-risk drilling prospects, potentially leading to new discoveries that could impact future crude oil and natural gas production from Equatorial Guinea. However, the project is still in its early stages, with the first phase data expected by late 2026. The full vision, covering over 59,000 sq km of 3D data, would create one of the most comprehensive seismic datasets in West Africa, attracting investment from international oil companies such as ExxonMobil, Marathon Oil, and others active in the region. The outcome of this megasurvey could influence future licensing rounds and exploration strategies in the Gulf of Guinea.
Sources:
