Drilling Update

RNS Number : 5028O
Tullow Oil PLC
09 March 2009
 



News Release 



Significant discovery at Tweneboa-1 exploration well offshore Ghana

 

9 March 2009 - Tullow Oil plc (Tullow) announces that the Tweneboa-1 exploration well, drilled in the Deepwater Tano licence offshore Ghana, has discovered a significant highly-pressured light hydrocarbon accumulation.


The well encountered 21 metres of net pay and was drilled to a depth of 3,593 metres and is currently being deepened to further assess the discovery and the up-dip limit of a potential deeper fan system.


The well was optimally located to penetrate multiple targets, including  the edge of an undrilled major Turonian fan system. Further drilling will now be required to test core areas within this potentially giant stratigraphic trap where thicker Turonian reservoir sections are mappedThe upside area of approximately 200 square kilometres includes two de-risked prospective parts, Owo and Ntomme.


The Tweneboa-1 well was drilled by the Eirik Raude deepwater rig in a water depth of 1,148 metres some 25 kilometres west of the Jubilee Field.


Tullow (49.95%) operates the Deepwater Tano licence and is partnered by Kosmos Energy (18%), Anadarko Petroleum (18%), Sabre Oil & Gas (4.05%) and the Ghana National Petroleum Corporation (GNPC) (10% carried interest).


Commenting today, Angus McCossExploration Director, said:

'Tweneboa is another outstanding discovery offshore Ghana which maintains our 100% success rate in the region. Substantial upside has been identified and a material appraisal programme will follow. This result has the potential to deliver yet another transformational growth step for Tullow.'


FOR FURTHER INFORMATION CONTACT:

Tullow Oil plc 
(+44 20 8996 1000)

Angus McCoss

Chris Perry

Citigate Dewe Rogerson 
(+44 207 638 9571) 

Martin Jackson

George Cazenove

Murray Consultants 
(+353 1 498 0300) 

Joe Murray 

Ed Micheau


Notes to Editors

Tullow is a leading independent oil & gas, exploration and production group, quoted on the London and Irish Stock Exchanges (symbol: TLW) and is a constituent of the FTSE 100 Index. The Group has interests in over 85 exploration and production licences across 22 countries and focuses on four core areas: Africa, Europe, South Asia and South America.


In Africa, Tullow has production in Gabon, Côte d'Ivoire, Mauritania, Congo (Brazzaville) and Equatorial Guinea and two large appraisal and development programmes in Ghana and Uganda. Tullow also has exploration interests in Gabon, Côte d'Ivoire, Mauritania, Senegal, Congo (DRC), Tanzania, Madagascar, Namibia and Angola.


Tullow's European interests are primarily focused on gas in the UK Southern North Sea where it has significant interests in the Caister-Murdoch System and the Thames areaThe company also has interests offshore the Netherlands and Portugal.


In South Asia, Tullow has exploration and production in Pakistan and Bangladesh and exploration activities in India. In South America, Tullow has exploration interests in Guyana, French Guiana and Suriname. 


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



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