North Sea interests

Petrofac Limited
29 August 2007

                                PETROFAC LIMITED


                       EXCHANGE OF UK NORTH SEA INTERESTS

Petrofac, the international oil & gas facilities service provider, announces
that its Energy Developments division has exchanged its 29% interest in UK North
Sea Block 9/28a (containing the Crawford field) for an additional 3.11% of Block
211/18a (West Don area) with Valiant Petroleum. The operatorship of the Crawford
field has been transferred from Petrofac to Fairfield Energy.

Petrofac now holds a 43.11% operated interest in Block 211/18a, which contains a
64.25% share of the West Don field. A pre-unitisation agreement with the owners
of the adjacent block has been concluded, to establish field equity shares for
the field life. Under the agreement, Petrofac will hold a 27.70% operated
interest in the West Don field.

Amjad Bseisu, chief executive of Petrofac Energy Developments, commented:
"Following this exchange, we have increased our participation in the greater Don
area, where we hold operator status in our interests. A draft field development
plan was submitted for the Don Southwest field in May 2007 and we continue to
make good progress towards submission of a draft field development plan for the
West Don field."


                                    - Ends -



For further information contact:

Petrofac Limited [phone]
Ayman Asfari, Group Chief Executive
Keith Roberts, Chief Financial Officer
Jonathan Low, Head of Investor Relations

Bell Pottinger Corporate & Financial [phone]
Ann-marie Wilkinson
Olly Scott


Notes to Editors

Petrofac

Petrofac is a leading international provider of facilities solutions to the oil
& gas production and processing industry, with a diverse customer portfolio
including many of the world's leading integrated, independent and national oil &
gas companies. Petrofac is quoted on the London Stock Exchange (symbol: PFC) and
is a constituent of the FTSE 250 Index.

Through its three divisions, Engineering & Construction, Operations Services and
Energy Developments, Petrofac designs and builds oil & gas facilities; operates,
maintains or manages facilities and trains personnel; and, where return criteria
are met and service revenue synergies identified, co-invests with clients and
partners. Petrofac's range of services allows it to help meet its customers'
needs across the life cycle of oil & gas assets.

With more than 9,500 employees, Petrofac operates out of four strategically
located international centres, in Aberdeen, Sharjah, Woking and Mumbai and a
further 16 offices worldwide. The predominant focus of Petrofac's business is on
the UK Continental Shelf (UKCS), Africa, the Middle East, the Commonwealth of
Independent States (CIS) and the Asia Pacific region.


For additional information, please refer to the Petrofac website at
www.petrofac.com.



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