Drilling Update Twiga South-1

News Release

Twiga South-1 Drilling Update

31 October 2012 - Following media speculation in Kenya, Tullow Oil plc (Tullow) announces that the Twiga South-1 exploration well in onshore Kenya Block 13T has successfully encountered oil. Drilling is on-going and, as previously stated by partners Africa Oil Corp (Africa Oil) on October 26 2012, an announcement of the drilling result is expected in early to mid-November after target depth has been achieved and necessary sampling and analysis has been completed.

The Twiga South-1 structure is the second prospect to be tested as part of a multi-well drilling campaign in Kenya and Ethiopia and is the first discovery in block 13T following the Ngamia-1 discovery earlier this year in Block 10BB. 

Tullow has a 50% operated interest in the Twiga South-1 well with Africa Oil holding the remaining 50% interest.

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Tullow Group Overview

Tullow is a leading independent oil & gas, exploration and production group, quoted on the London, Irish and Ghanaian (symbol: TLW) stock exchanges and is a constituent of the FTSE 100 Index. The Group has interests in over 100 exploration and production licences across 24 countries and focuses on four core areas: Africa, Europe, South Asia and South America.

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