Well Test Update

10 Jul 2006 07:01

Tullow Oil PLC10 July 2006 News release Tullow Oil Plc - Waraga-1 Well Test Update 10 July 2006 - Hardman Resources, the operator of the Waraga-1 well test inUganda, in which Tullow Oil Plc (Tullow) is a 50% partner, today issued thefollowing press release. Production Testing Update: Waraga-1 Oil Discovery, Uganda Hardman has completed testing of the third and final interval of the threehydrocarbon bearing zones at the Waraga-1 location. Following a shut-in periodfor pressure build-up, the uppermost zone (1680 to 1710 metres) produced amaximum stabilised flow rate of c. 3,650 barrels of oil per day (bopd) of 18.6degrees API oil through a 1" choke. This follows the company's previous updatethat reported the same zone flowed at a stabilised rate of c. 2,100 bopd througha 36/64" choke. This concludes the testing programme at Waraga-1, designed to assess formationproductivity and acquire good quality fluid samples. The well has been pluggedand suspended ready for completion and potential future production. Results from the three zones tested are summarised below: Test Perforated Interval Main test Maximum flow (1" Oil quality Depth choke) (36/64" choke) #1. Lower Zone 1,888-1,894 metres 1,500 bopd 4,200 bopd 33.8degrees API#2. Middle Zone 1,782 to 1,792.5 metres 2,400 bopd 4,200 bopd 33.8degrees API#3. Upper Zone 1,680 to 1,710 metres 2,100 bopd 3,650 bopd 18.6degrees API TOTAL 6,000 bopd 12,050 bopd The rig and testing equipment will now be relocated to the Mputa-1 location forflow testing of similar oil bearing intervals to those tested at Waraga. Inaddition a flow test will be attempted from fractured basement lithologies wherehydrocarbons were encountered during the drilling of the Mputa well - anadditional play type to those already tested at Waraga. The programme at Mputais expected to commence in early August. Hardman's next drilling update will be in mid July 2006 with the spudding of theColin-1 well, located in PSC Area 'A', offshore Mauritania. For further information contact: Tullow Oil plc Citigate Dewe Rogerson Murray Consultants(+44 20 8996 1000) (+44 20 7638 9571) (+353 1 498 0300)Tom Hickey Martin Jackson Joe MurrayAngus McCossChris Perry 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 aconstituent of the FTSE 250 Index. The Group has interests in approximately 90exploration and production licences in 15 countries and focuses on three coreareas: NW Europe, Africa and South Asia. Tullow's NW Europe interests are primarily focused on gas in the UK SouthernNorth Sea where it has significant interests in the Caister-Murdoch System andthe Thames/Hewett areas and operates over 60% of its production. In Africa, Tullow has production and exploration in Gabon, Cote d'Ivoire, Congo(Brazzaville) and Equatorial Guinea and a large gas field development andappraisal programme in Namibia. Tullow also has exploration programmes inMauritania, Senegal, Cameroon, Uganda, Madagascar and Angola. In South Asia, Tullow has production and exploration interests in Pakistan andBangladesh and high impact exploration activities in India. For further information please refer to our website at www.tullowoil.com ENDS This information is provided by RNS The company news service from the London Stock Exchange