International Activity Update

Tullow Oil PLC
22 November 2007


News release


International Activity Update

22 November 2007 - Tullow Oil plc (Tullow) announces first gas from the Kelvin
field in the UK Southern North Sea, the commencement of drilling on the Ngassa-1
well in Uganda,  the start of testing on the Mputa-4 discovery well in Uganda
and completion of the M'Pano exploration well in Gabon.


UK - FIRST GAS FROM KELVIN FIELD (Tullow 22.5%)

Natural gas production from the Kelvin field commenced on 15 November 2007 at a
gross rate of 103 mmscfd on a 30% choke.

The Kelvin field development consists of a single well, a minimum-facilities
platform and a 12 kilometre pipeline that connects to the Tullow-owned CMS
infrastructure at Murdoch. The development also acts as a potential tie-in point
for the nearby K4 and Harrison discoveries.

The project has been completed under budget, ahead of schedule and just two
years after the field was discovered.


UGANDA - NGASSA-1 DRILLING AND MPUTA-4 WELL TEST COMMENCED (Tullow 100%)

The Ngassa-1 exploration well in Block 2 Uganda commenced drilling on 17
November 2007.  The well is being drilled by the Nabors 221 rig and will test
the high impact Ngassa prospect which is located beneath Lake Albert. The Nabors
221 rig has been specifically mobilised to the region in order to drill deep
prospects located under the lake from onshore locations.

Drilling startup was delayed as a result of heavy rain which slowed construction
on the drill site.  The well has a planned length of 4,900 metres and is
expected to take approximately 110 days to reach the primary target.  The well
has already been drilled to a depth of 311 metres.

Poor weather conditions have also impacted the start of the Mputa-4 well test.
This extended flow test commenced on 21 November and interpreted results are
expected in early December.



GABON - M'PANO-1 WELL PLUGGED AND ABANDONED (Tullow 40%)

The onshore M'Pano-1 well in the Nziembou licence which commenced drilling on 2
October 2007 reached a total depth of 1,500 metres on 13 November 2007. Despite
confirming the presence of the primary Gamba formation, these reservoirs were
not hydrocarbon bearing. The well's secondary objectives, whilst possibly oil
bearing, had no reservoir quality sands and so the well has been plugged and
abandoned.


For further information contact:
Tullow Oil plc                     Citigate Dewe Rogerson              Murray Consultants
([phone])                 ([phone])                  ([phone])
Tom Hickey                         Martin Jackson                      Joe Murray
Chris Perry                        George Cazenove


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 110
exploration and production licences across 22 countries and focuses on four core
areas: Europe, Africa, South Asia and South America.

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-Hewett areas and operates over 70% of its production.

In Africa, Tullow has exploration and production in Gabon, Cote d'Ivoire, Congo
(Brazzaville), Mauritania and Equatorial Guinea and a gas field development in
Namibia. Tullow also has exploration programmes in Mauritania, Senegal, Uganda,
Congo (DRC), Tanzania, Madagascar, Angola and Ghana.

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

In South America Tullow has high impact exploration interests in Trinidad and
Tobago, French Guiana and Suriname.

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



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