TULLOW OIL PLC

Regulatory Filings • Apr 23, 2013

National Storage Mechanism | Additional information

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RNS Number : 9474C

Tullow Oil PLC

23 April 2013

News Release

French Guiana operational update

23 April 2013 - Tullow Oil plc ("Tullow") provides an update on progress with the Priodontes-1 well, offshore French Guiana. This follows Tullow's earlier statement on this well issued on 17 April 2013.

The Priodontes-1 well, offshore French Guiana, has now been drilled to a Total Depth of 6,318m in water depths of 1,750m. Having encountered no hydrocarbons in the main target reservoir, the well has been plugged and abandoned. The Stena Ice Max rig will now move to the site of the Cebus exploration well (GM-ES-4). Spudding of this well, which will test a new and totally separate fan, is due within the next two weeks.

Angus McCoss, Exploration Director of Tullow Oil plc, commented today,  

"Although this well did not encounter significant hydrocarbons, we have added substantially to our knowledge of the formations in this frontier exploration area. The campaign now moves to the Cebus prospect which is located in a separate fan to Zaedyus and Priodontes. This means that there is limited read-across for Cebus from the wells drilled thus far. However, all have demonstrated, to differing degrees, that the Cingulata fan system has been charged with oil and Cebus is an excellent prospect from which we can expect a result later this year."

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 plc

Tullow is a leading independent oil & gas, exploration and production group, quoted on the London, Irish and Ghanaian stock exchanges (symbol: TLW) and is a constituent of the FTSE 100 Index. The Group has interests in over 150 exploration and production licences across 25 countries which are managed as three regional business units: West & North Africa, South & East Africa and Europe, South America and Asia.

Follow Tullow on:

Twitter: www.twitter.com/TullowOilplc                          You Tube: www.youtube.com/TullowOilplc

Facebook: www.facebook.com/TullowOilplc                  LinkedIn: www.linkedin.com/company/Tullow-Oil 

IR App: http://bit.ly/TullowIRapp    

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

This information is provided by RNS

The company news service from the London Stock Exchange

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