Well update

Tullow Oil PLC
04 July 2006



News release


Tullow Oil Plc - Waraga-1 Well Test Update


The following announcement replaces RNS no. 6130F released today at 0706 which
was a duplicate of a previous announcement.



4 July 2006 - Hardman Resources, the operator of the Waraga-1 well test in
Uganda, in which Tullow Oil Plc (Tullow) is a 50% partner, today issued the
following press release.


           Production Testing Update: Waraga-1 Oil Discovery, Uganda



Since our announcement on 27th June, reporting a flow rate of approximately
4,200 barrels of oil per day (bopd) from the lowermost zone at Waraga-1 well,
Hardman has now completed testing of the middle of the three zones to be flowed
at the Waraga-1 location and commenced testing of the upper zone.



From the middle perforated interval from 1782 to 1792.5 metres the well flowed
at an average of 2,400 barrels of oil per day (bopd) through a 36/64' choke.
Following a shut-in period the well was flowed through a 1' choke at a sustained
flow rate of approximately 4,200 bopd.  The quality of the oil is the same as
tested in the lower zone of the well, being a light (33.8degreesAPI), but waxy,
crude.



As at midnight on 3rd July, the third and final interval was perforated from
1680 to 1710 metres.  This interval flowed heavier (18.5 degreesAPI) oil at a
stabilized rate of 2,115 bopd through a 36/64' choke.  The well is currently
shut in for pressure build up prior to the final flow period with results
expected before the end of the week.



Following the conclusion of testing at Waraga-1, the rig will move to the Mputa
area for testing which is expected to commence by late July/early August.





For further information contact:

Tullow Oil plc            Citigate Dewe Rogerson              Murray Consultants
([phone])        ([phone])                  ([phone])
Tom Hickey                Martin Jackson                      Joe Murray
Angus McCoss
Chris 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 a
constituent of the FTSE 250 Index. The Group has interests in approximately 90
exploration and production licences in 15 countries and focuses on three core
areas: NW Europe, Africa and South Asia.



Tullow's NW Europe 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/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 and
appraisal programme in Namibia. Tullow also has exploration programmes in
Mauritania, Senegal, Cameroon, Uganda, Madagascar and Angola.



In South Asia, Tullow has production and exploration interests in Pakistan and
Bangladesh 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