SHELL Expro has signed a series of long-term contracts worth more than #650m which it claims will safeguard thousands of jobs in the North Sea industries.

The contracts, for which service companies have competitively tendered, involvestreamlining the way services are provided for Shell's offshore operations in the central and northern North Sea.

They combine design, maintenance and facilities modifications into a single contract for particular groups of platforms and although fewer in number, are wider in scope and are for seven years.

Known as integrated service contracts, they will cover a number of platforms. Wood Group Engineering has won the award for the four platforms in the Brent Field.

Amec Process and Energy has been successful for the other five platforms in the East Shetland Basin - Dunlin, Cormorant Alpha, North Cormorant, Tern and Eider - and Brown and Root AOC will provide services for the Fulmar, Auk, Gannet, Kittiwake and Anasuria FPSO in the central North Sea.

Previously seven contracts covered the same work. The contracts will start next year.

''These contracts, which will help provide job security for about 2000 skilled workers onshore and offshore, will initially be for a seven-year period and could potentially be extended for the entire life of these facilities, said Malcolm Brinded, oil and technical services director of Shell Expro.

''There is the potential for significantly-improved effectiveness giving at least 15% savings in engineering and maintenance costs over the next few years, which will be vital to prolong field life in many cases to 2010 and beyond.''

He said that although the contracts were larger than in the past, they did not diminish the chances for smaller companies to offer services to the main contractors in specialised areas and Shell Expro would encourage these opportunities.

''The length of the contracts provides a secure base load of work for those contractors, and should enable them to operate more effectively in terms of their staff development and training,'' said Brent Field engineering manager Tony Brown.