Farm-in opportunity · Offshore Guinea-Bissau
Blocks 7B and 7C: two deepwater licences in the southern MSGBC Basin, open for a partner
Supernova Energy holds a 90% working interest in Blocks 7B and 7C, alongside state oil company Petroguin (10%, carried). We are offering an interest and operatorship to a farm-in partner ready to take the licences into the next phase.
The opportunity
Field interest and operatorship, in exchange for a carry through the next exploration stage
All current work obligations have been fulfilled. The licences are valid until October 2028, when Block 7B enters its drilling stage and Block 7C its 3D seismic stage. Supernova is looking for a partner to lead that programme.
- Field interest and operatorship of both blocks.
- Carry of Supernova through a credible exploration programme, in addition to Petroguin’s proportional carry under the Joint Venture Agreement.
- Proportional refund of past costs.
Upcoming work obligations
From 3 October 2028, under the Joint Venture Agreements
| Licence | Obligation | Period |
|---|---|---|
| Block 7B Garoupa · Stage 3 |
1 exploration well | Oct 2028 – Oct 2030 |
| Block 7C CôrCôr · Stage 2 |
750 km² 3D seismic | Oct 2028 – Oct 2030 |
Why now
A basin that is producing to the north, with a supermajor moving in next door
Chevron on the adjacent blocks
Chevron signed Blocks 5B and 6B, adjacent to Supernova’s acreage, in November 2025, and took a further interest in Block 4B in 2026.
Production along trend
Sangomar, offshore Senegal, reached 100,000 bopd in September 2024. Greater Tortue-Ahmeyim has delivered first gas and first LNG lifting.
Conjugate to Guyana–Suriname
The blocks sit on the margin conjugate to the Guyana and Suriname basins, where oil-prone Cretaceous marine shales source a string of major discoveries.
Prospectivity
Ten prospects and leads, supported by evidence of a working petroleum system
Migrant oil in piston cores on Block 7B, repeating surface slicks, seafloor geochemistry and the Gantonas Farm light-oil/condensate seep on the coast all point to active charge. 3D basin modelling places the Upper Barremian to Lower Aptian source optimally to charge the overlying Aptian and Cenomanian traps.
Licence location map – Blocks 7B and 7C in yellow and neighbouring operators.
Lower to Middle Aptian deep-marine fans in fault blocks and anticlines
Potential stacked reservoirs; on Prospect F several horizons show conformable amplitude and AVO anomalies (uncalibrated). Structures unique within the MSGBC Basin, formed by mid-Cretaceous rifting.
Aptian shelf-margin traps
Structurally closed subconformity traps on the NW–SE shelf margin, sealed by Upper Cretaceous claystones, an analogous setting to the Sangomar field.
Cenomanian deep-water channels
Channel-fill sandstones in stratigraphic traps above the intra-Cretaceous unconformity, defined by prominent amplitude anomalies.
Volumetrics, chance of success and indicative economics are available to qualified parties in the data room, under a confidentiality agreement.
Technical work to date
More than a decade of data acquisition and independent study
2,371 km² 3D seismic acquired over Block 7B
Prospectivity studies across deepwater Guinea-Bissau by Beagle Geoscience
Regional source-rock study with First Exchange Corporation
Full reprocessing of the Block 7B 3D within the TGS Jaan survey
3D basin modelling of six source-rock units by IGI
RGB blending and PaleoScan studies for the Aptian
Fault-seal and pore-pressure study with Harvex Geosolutions
Overburden and field-analogue study by PVE Consulting
Latest news
Updates
About Supernova
A privately owned exploration company
Supernova Energy engages in oil and gas exploration and production. In Guinea-Bissau it works alongside Petroguin, the national oil company, which acts as both concessionaire and commercial partner in the licences.
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Farm-out process
From confidentiality agreement to data room
Contact us and sign a confidentiality agreement
Receive the 2026 Information Memorandum and virtual data-room access (excluding multi-client seismic)
Visit the full data room in London, run by PVE Consulting
Submit a farm-in proposal