Côte d’Ivoire, Tano Basin
After more than 20 years of industry exploration in the country's deep waters with no commercial discoveries, Eni announced a major play-opening oil discovery in September 2021 over block CI-101, offshore Côte d’Ivoire. Preliminarily estimates indicated between 1.5 and 2.0 billion barrels of oil in place and between 1.8 and 2.4 trillion cubic feet (TCF) of associated gas.
In July 2022, ensuing results from its appraisal program increased volume estimates by around 25%. Hydrocarbons in place in the Baleine Field are now estimated at 2.5 billion barrels of oil and 3.3 trillion cubic feet (TCF) of associated gas. These estimates further increase confidence in the prospects in this once-ignored basin.
The discovery, drilled on the Baleine prospect, proved the presence of light oil (40° API) in two different stratigraphic levels of Santonian and Cenomanian / Albian age. The Baleine-1x well was drilled approximately 60 km off the coast, in about 1,200 m of water depth, and reached a total depth of 3,445 m.