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 mapped. The 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 McCoss, Exploration 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  ([phone]) Angus McCoss Chris Perry

Citigate Dewe Rogerson  ([phone])  Martin Jackson George Cazenove

Murray Consultants  ([phone])  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 area. The 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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