The under-explored basin is drawing attention as new data acquisition plans and early geological signals point to Tano-like prospectivity, as presented at the Wider African Energy Summit on Wednesday.
Ghana’s under-explored Keta Basin is emerging as a promising target for UK investors and seismic companies as new data acquisition plans advance and early geological indicators point to strong prospectivity. GeoPartners is preparing a 14,000-km² multi-client 3D seismic survey for acquisition in the first quarter of 2026, covering eight open blocks that Ghana aims to bring to market, said Matt Tyrrell, VP of Business Development at TROIS GeoConsulting, speaking at the Wider African Energy Summit on Wednesday.
The basin has seen minimal drilling to date – only six wells have been drilled on 3D seismic data – but most have recorded hydrocarbon shows. Geologists say this limited well count, combined with encouraging early indicators, is exactly what makes the basin attractive for new entrants. Several mature source rocks have been identified across the play, while sand provenance studies suggest strong reservoir qualities comparable to the Tano Basin, home to Ghana’s most successful offshore developments.
According to Tyrrell, these geological fundamentals warrant closer attention from UK explorers and data investors. “One of the big challenges in all of the Transform Margin is that a lot of the traps are breached by late-stage tectonics,” he said. “In the Keta Basin, it looks like that risk is very low.” Tyrrell noted that all drilling to date has been conducted on the shelf, leaving the deeper-water FAN-type plays untested. “It could be that deepwater Keta has the same prospectivity as Tano,” he said, describing the basin as a “tantalizing” opportunity.
International interest is already picking up, with Shell indicating it has seen promising early signs. The company has said it recorded good AVO responses on 2D data and that 3D seismic coverage – such as the planned GeoPartners survey – will be essential before it considers taking acreage.
The upcoming survey is expected to be a key catalyst for attracting UK companies across the upstream spectrum, from seismic and geophysical specialists to independent operators looking for frontier-scale opportunities with comparatively low structural risk. With Ghana seeking to reinvigorate exploration and open new basins to foreign investment, the Keta Basin is shaping up to be one of the country’s most compelling prospects.