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Zawartość zarchiwizowana w dniu 2022-12-27

OFFSHORE PRODUCTION SYSTEM "EXBOY"

Cel

Development of an offshore production system "exboy".

The project follows up an earlier two year research and development programme carried out in 1973-1975 on tethered bouyant platforms for use in exploiting undersea ressources, particularly in deeper waters. Early work resulted in a design concept covering a wide range of payloads up to 22,000 tons and a wide range of water depths. As a basic marine platforms the design can be used or adapted for any purpose connected with offshore oil or gas production.

The project is essentially devoted to the platform structure and its hydrodynamic behaviour, together with its associated anchorage systems, and the present phase takes the development of such a platform to a point where the design is suitable for commercial application.

In 1977 and 1978 the work was carried out on optimising alternative for the shape of floating structure, and assessing their dynamic behaviour under the action of waves, winds and currents. Structural design of the hull and platform was carried out to assess hullweights and characteristics. Tank testing was carried out on a number of basic hydrodynamic forms and various anchorage configurations have been tested in conjunction with different hull shapes.

A series of tank tests was carried out in 1978 with the objective of minimising anchorage cable forces, and confirming the behaviour of design derived from computer studies. Experimental results deviated from predicted values by considerable amounts, leading to further tests of models designed to explore various aspects of the behaviour of thethered bouyant platforms under wave action and paying particular attention to the analysis of resonance effects in the anchorage cables.

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Koordynator

Freeman Fox and Partners
Wkład UE
Brak danych
Adres
Smith Block 25 Victoria Street
SW1H 0EX London
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