Gulf of Guinea

Commentary

The basin has re-emerged as an active deepwater province, with Baleine Phase 3 sanctioned and the Calao discoveries pointing to a second development hub. The principal country has become one of West Africa's most attractive upstream jurisdictions, and political continuity following Ouattara's re-election supports further licensing. Outlook: Positive.

Updated

October 12, 2026

Location

Description

The Gulf of Guinea formed at the culmination of Late Jurassic to Early Cretaceous tectonism that was characterised by both block and transform faulting superimposed across an extensive Palaeozoic basin during breakup of the African, North American, and South American palaeocontinents. Thus, the province has undergone a complex history, which we divide into pre-transform (late Proterozoic to Late Jurassic), syn-transform (Late Jurassic to Early Cretaceous), and post transform (Late Cretaceous to Holocene) stages of basin development. These three stages are referred to as the pre-rift (or intracratonic), syn-rift (or rift), and post-rift (or drift) stages. The structural basins within the province are aligned generally east-west, with boundaries delimited by an east-west transform fault system and north-south structural arches.

Summary

The basin has re-emerged as an active deepwater province. Eni's Baleine field produces over 60,000 b/d, and Phase 3 (FID May 2026) will lift output to 150,000 b/d and 200 MMcf/d, while the Calao and Calao South discoveries (up to 5tcf of gas and 450mm bbl of condensate) point to a second development hub.