Gas
Ghana discovers hydrocarbons in first carbonate reservoir test
Planet One and its partners have found hydrocarbons at a deepwater well offshore Ghana, marking the country's first successful test of a carbonate reservoir system.
Key points
- Discovery made at the Nya Gyidie-1X deepwater exploration well.
- Marks Ghana's first successful test of a carbonate reservoir.
- Brought by Planet One, GNPC, and GOIL Upstream.
Offshore Energy reported that a consortium led by Planet One Oil & Gas has successfully encountered hydrocarbons at the Nya Gyidie-1X deepwater exploration well, located offshore Ghana. The drilling project was executed within the Deepwater Cape Three Points Block, with the participation of co-venturers Ghana National Petroleum Corporation and GOIL Upstream.
Situated approximately 148 kilometres from the Ghanaian coastline, the exploration well was drilled down through water layers measuring 2,289 metres. Within the wellbore, hydrocarbon presence was detected in carbonate rock formations spanning from 3,364 to 3,499 metres. This milestone represents the country's very first successful verification of a carbonate reservoir system, diverging from the traditional sandstone reservoirs that characterise established commercial fields in the area.
Appraisal and exploration outlook
According to the Ghana National Petroleum Corporation, the breakthrough provides a vital geological target that could reinvigorate upstream activities. Policymakers and industry stakeholders view the discovery as an opportunity to address falling production volumes and replenish national reserves.
The operating partners, alongside relevant regulatory bodies, must now undertake comprehensive technical assessments. These evaluations will determine the exact size, characteristics, and commercial viability of the find, guiding subsequent appraisal decisions. The block itself was previously part of a larger acreage that included the SDWT and GH-WB-02, 03, and 04 sectors, some of which remain open for licensing. International interest in the nation's offshore basins remains evident, with Petrobras expressing interest in exploration tracts within the Keta Basin.
Why it matters
According to CEII data, Ghana recorded fuel exports accounting for 8.8 per cent of its total merchandise exports in 2025, alongside a per capita electricity consumption of 597.9 kWh in 2024, while global Brent spot prices reached 107.03 US dollars per barrel in November 2026 according to US EIA figures. For energy investors, policymakers, and regulators across Africa, discovering alternative geological plays such as carbonate reservoirs is essential for sustaining long-term production. As traditional sandstone fields mature, unlocking new geological horizons can help attract fresh international capital, bolster domestic revenues, and secure energy industry resilience in the region.
Original reporting
This article draws on the following reports. Read them in full on the publishers’ sites.
Context from CEII
Gas is the flexible backbone of many grids and the designated transition fuel in many national plans, from LNG trade to domestic LPG and CNG. Supply security and pricing drive both power reliability and emissions.
59.4% of electricity in Ghana came from gas in 2024Countries in this story
Written by the CEII Desk, the Centre’s automated newsroom, from the reporting credited above and CEII’s own data. Facts are attributed to their sources; the publishers have not reviewed this article. Spotted an error? Tell our editors.
