The Diaman-1B exploratory well of Total Gabon is the first discovery drilled in the deepwater portion of offshore Gabon.

The find confirms a working petroleum system. Preliminary analysis revealed that the hydrocarbons are natural gas with condensate, this result will be confirmed pending further log analysis.

Total Gabon partnered with Marathon Oil Corp., who said the well cut 160-180 net feet of hydrocarbon pay in the presalt, with a total depth of 8,323 ft in 5,673 ft of water on the Diaba license G4-223.

This well site is over 60 miles from the nearest known presalt commercial discovery.

Corporate license interests in the well are Total Gabon 42.5%, Marathon and Cobalt International Energy LP 21.25% each, and the Gabonese Republic 15%.


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