This gives it confidence that it will make additional discoveries in waters to the west of its key Jubilee field in Ghana.
Tullow said on Thursday that the exploration well, which it called Paon-1X and which was on licence CI-103, found good quality light oil.
Cote d’Ivoire had been disappointed in April when a dry hole was drilled. But now the story has changed.
Tullow operates the huge Jubilee oil field in Ghana and has been pushing its hunt for oil westwards in the hope of discovering more oil off the Cote d’Ivoire.
“The discovery of light oil in our first well in CI-103 extends the proven play for oil westwards from our successes in Ghana and is encouraging for our future exploration efforts elsewhere in this licence,”said Tullow’s Exploration Director Angus McCoss.
Tullow owns a 45 per cent stake in the CI-103 licence and is partnered with U.S. explorer Anadarko Petroleum.
“The discovery is the first meaningful deep-water Cote d’Ivoire success and de-risks several nearby lookalike prospects, high potential 2013 drilling candidates,”Morgan Stanley analysts said in a note.