French oil major Total, through Total Gabon and its partners, has hit hydrocarbon pay off the coast of Gabon. Marathon Oil, a partner with a 21.25% non-operated working interest in the Diaba License noted August 19 that the pre-salt Diaman-1B exploration well offshore Gabon encountered 160-180 net feet of hydrocarbon pay in the deepwater pre-salt play. Preliminary analysis suggests that the hydrocarbons are natural gas with condensate content, pending results of ongoing analyses of well data. The Diaman-1B well was drilled to a total depth of 18,323 feet in approximately 5,673 feet of water in the Diaba License G4-223.
The Diaman-1B successfully confirms the existence of a working petroleum system and is the first discovery drilled in the deepwater portion of the pre-salt play. Diaman-1B is located over 60 miles away from the nearest other pre-salt commercial discovery.
The operator and partners are currently evaluating the well results and incorporating them into an overall evaluation of the Diaman-1B discovery. The well will be temporarily abandoned pending further analysis of the data.
Total Gabon holds a 42.5% working interest and serves as operator of the Diaba License. In addition to Marathon Oil, partners include Cobalt International Energy LP (21.25% working interest) and Gabonese Republic (15% working interest).