TULLOW OIL PLC

Regulatory Filings • Feb 12, 2013

National Storage Mechanism | Additional information

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RNS Number : 6682X

Tullow Oil PLC

12 February 2013

News Release

Ghana Update

12 February 2013 - Tullow Oil plc ("Tullow") notes three disclosures related to its Ghana operations made by Kosmos Energy ("Kosmos") in association with a secondary offering for Kosmos shares. Tullow will provide further updates in its 2012 financial results statement due to be issued on 13 February 2013.

Kosmos disclosures

"In November 2012, the Company submitted a declaration of commerciality and plan of development ("PoD") over the Tweneboa, Enyenra, Ntomme ("TEN") discoveries on the Deepwater Tano Block offshore Ghana ("DT Block"). The PoD for TEN plans for a flexible and expandable development, with an initial base capacity of 80,000 barrels of oil per day. The final development concept is subject to approval from the government of Ghana."

"The Sapele-1 exploration well on the DT Block was spud in December 2012. The well, which is targeting multiple Turonian-aged reservoirs, is being drilled in a water depth of approximately 1,840 meters. Drilling at the well has reached a depth of approximately 3,900 meters. The primary target encountered a high-quality water-bearing reservoir. Drilling operations at Sapele-1 are continuing to additional reservoir intervals, with total depth for the well planned to be approximately 4,100 meters. The well is expected to reach its total depth in the first quarter of 2013."

"In January 2013, the Company relinquished the discovery area associated with the Banda discovery on the West Cape Three Points ("WCTP") Block, as the Company does not consider this discovery to be commercially viable following additional seismic evaluation and interpretation."

FOR FURTHER INFORMATION CONTACT:

Tullow Oil plc (London) (+44 20 3249 9000) Chris Perry (Investor Relations) James Arnold (Investor Relations) George Cazenove (Media Relations)	Citigate Dewe Rogerson (London) (+44 207 638 9571) Martin Jackson Jack Rich	Murray Consultants (Dublin) (+353 1 498 0300) Joe Murray Joe Heron

Notes to Editors

Tullow Oil

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 25 countries and focuses on four core areas: Africa, Europe, South Asia and South America.

For further information please refer to our website at www.tullowoil.com.

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