Well Redevelopment Update

Tullow Oil PLC
08 November 2006

News release



Tullow Oil plc - Schooner and Ketch Redevelopment Update


8 November 2006 - Tullow Oil plc (Tullow) announces that the NW Schooner
appraisal well tested at a rate of 7.5 mmscfd and that Ketch-7 has been brought
on stream and is currently producing at 50 mmscfd.



NW SCHOONER APPRAISAL WELL (Tullow 90.35%)

The NW Schooner appraisal well, targeting an extension of the main Schooner
field, encountered gas bearing reservoir zones that have now been tested.  The
well flowed at a rate of 7.5 mmscfd from the Ketch reservoir sands with a
depleted pressure of 2,250 psi, significantly below expectations and indicating
that this area is in communication with the main Schooner field.



The well has been suspended to consider the implication of these results and to
further evaluate the options for this region of the field. There are no
immediate plans to tie back this well to the Schooner platform.  The Borgsten
Dolphin rig has now moved off location.



KETCH-7 BROUGHT ON PRODUCTION (Tullow 100%)

The Ketch-7 well, the second Schooner-Ketch redevelopment well, tested at a rate
of 45 mmscfd and was brought on stream on 8 October 2006.  The well has been
producing at an average rate of over 50 mmscfd for the last month and has
increased the Schooner and Ketch production capability to over 100 mmscfd.



The second Ketch development well, Ketch-8, is currently drilling at a measured
depth of 16,400 feet.  The forward plan is to drill the 3,000 foot horizontal
reservoir section and bring the well on production in January 2007.



Commenting today, Aidan Heavey, Chief Executive said:

'We are pleased with the overall progress of the Schooner & Ketch redevelopment
programme despite the disappointing NW Schooner outcome.  Since we acquired the
assets in 2005, production has trebled, uptime has improved significantly and
gas prices have strengthened. We expect the ongoing work programme to add
materially to current production rates.'

For further information contact:

Tullow Oil plc             Citigate Dewe Rogerson         Murray Consultants
([phone])         ([phone])             ([phone])
                           Martin Jackson                 Joe Murray

Aidan Heavey
Tom Hickey
Chris Perry



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 across 17 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 exploration and production 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, Congo (DRC), Madagascar, Angola and
Ghana.



In South Asia, Tullow has exploration and production in Pakistan and Bangladesh
and high impact exploration activities in India.

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


                      This information is provided by RNS
            The company news service from the London Stock Exchange