Côte d'Ivoire

Côte d’Ivoire Discovers Second-Largest Oil Deposit after Baleine Discovery


Published: Wednesday February 18, 2026
By: Oilfield Africa Review

Eni has made a significant gas and condensate discovery in Côte d’Ivoire, after a successful drilling of Murene South-1X, the first exploration well in Block CI-501.

The discovery, named Calao South, confirms the potential of the Calao channel complex, which also includes the Calao discovery, and represents the second-largest in the country after Baleine, with estimated volumes of up to 5.0 Tcf of gas and 450 million barrels of condensate (approximately 1.4 billion barrels of oil). The discovery was made in high-quality Cenomanian sands.

Block CI-501 is operated by Eni (90%) in partnership with Petroci Holding (10%). Murene South-1X is located approximately 8km southwest of Murene-1X discovery well in the adjacent CI-205 block. Drilled by the Saipem Santorini drilling ship to a total depth of around 5,000 meters in a 2,200 meter water depth, the well underwent an extensive data acquisition campaign.

Murene South-1X confirmed the main hydrocarbon bearing interval with a gross thickness of around 50 meters, with excellent petrophysical properties. Murene South-1X will undergo a full conventional drill stem test (DST) to assess the production capacity of the Calao discovery.

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