Watt Gas Field Production

Tullow Oil PLC
02 December 2003


Tullow Oil plc
2nd December 2003


Tullow Announces Commencement of Production from the Watt Gas Field

Tullow Oil plc, the international oil and gas exploration, development and
production company, announces first production from the Watt gas field, situated
in the UK Southern North Sea. Production from the single well development
commenced on 28th November, and was steadily increased over the next 24 hours to
reach a stabilised flow rate of 148mmscfd.

Watt is the fourth field to be brought on production as part of the five field
development, collectively known as CMS III, which uses the production and
transportation facilities of the Caister Murdoch System (CMS), located some 115
miles north east of the Lincolnshire coast.

Partners in the CMS III development are:

Tullow Oil UK Limited                                  - 14.1%
ConocoPhillips (U.K.) Limited (operator)               - 59.5%
GDF Britain Limited                                    - 26.4%


Production from the first three fields, Murdoch K, Hawksley, and McAdam, which
produce from a number of different Carboniferous reservoirs, has exceeded
expectations since first gas was produced from CMS III in September 2002. The
current combined production potential from the four fields, at around 360mmscfd,
is considerably above the predicted plateau rate of 300mmscfd.

The final well in the CMS III programme, Boulton H1, has now been re-entered
after its temporary suspension, with anticipated production commencing in Q1
next year.

Complementing the startup of the Watt field, the current commissioning of the
recently installed compressor unit on the Murdoch platform will double the CMS
compression capacity. This will facilitate increased flow rates and further
provide export capacity for future gas developments in the area via the CMS
facilities.

Aidan Heavey, Chief Executive of Tullow stated:

'Once again we have been delighted by the better than anticipated production
performance from these Carboniferous reservoirs. The combination of these
exceptional production rates and the current strong UK gas market makes CMS III
a very rewarding project for the partnership, and we will seek to emulate this
in other areas.'



For Further Information Contact:

Tullow Oil plc ([phone])
Aidan Heavey
Tom Hickey
John Lander

Citigate Dewe Rogerson ([phone])
Martin Jackson

Murray Consultants ([phone])
Joe Murray



Notes for Editors

Tullow Oil plc is one of the leading Independent International Oil & Gas
Exploration and Production companies in Europe. Tullow is quoted on the London
and Irish stock exchanges (symbol TLW) and is a member of the FTSE 250 Index.


Strategy

Tullow's strategy is to build strong and secure cash flow from low risk
production acreage while applying discretionary funds to exploration territories
with high potential. These activities will be undertaken in a manner that
reflects a genuine concern for the environment and the health and safety of all
personnel.


Production and Development Assets

Tullow has interests in over 50 exploration and production licences spread over
three core areas:  UK North Sea, West Africa and South Asia.

In the North Sea, Tullow's principal interests are in the CMS and the Thames/
Hewett group of licences and the operatorship of the Bacton onshore gas
processing terminal.

The Espoir field in Cote d'Ivoire, West Africa, is Tullow's principal source of
international production and is currently achieving a production level of over
26,000 boepd.  Tullow is also active in Gabon and Cameroon where it has in place
fast track exploration and development programmes.

In South Asia, Tullow has production and exploration interests in Pakistan,
exploration activities in Bangladesh, where an extensive drilling programme is
scheduled, and also in India.

For further information see www.tullowoil.com




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