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Contenu archivé le 2022-12-27

ROTATING TURRET ASSEMBLY FOR OIL RECEIVING, HANDLING AND SHIP MOORING

Objectif

To provide an engineered design of a turret system which can be incorporated into floating production system for the exploitation of marginal oil fields.
The turret will allow production to continue despite changing wave and wind direction by allowing the ship to rotate around its centre line, the turret is moored to the seabed.
The turret will contain much of the necessary production equipment and will incorporate a multipath system for the production, injection, inspection and test lines.
Detail development work has been carried out on the multipath fluid transfer system, mooring line handling equipment, riser handling equipment and on turret production facility.
Dialogue has been maintained with specialist equipment manufacturers and their recommendations incorporated where appropriate into the design.
Arrangement drawings have been prepared for each of these systems based on turret configurations for the COMPASS 50/205 vessel. During the course of developing the multipath hose wrapping system, emphasis has been placed on minimising the overall dimensions to limit windage and top weight, but with due consideration to operational efficiency and maintenance access and also to ensure that the demands of the system are compatible with current hose performance.
A feature of the system is the provision of a standby single path high pressure swivel to swivel to facilitate uninterrupted transfer of fluids during hose replacement.
The system designed can accommodate up to7 hose wrapped services and the configuration permits relative ship/turret rotation up to + /-410 degrees.
In response to specifc mooring data prepared by YARD Ltd. a mooring line handling system has been designed suitable for mooring COMPASS vessel in water depths up to 340m.
The equipment comprises propietary and special purpose mooring machinery arranged on the turret to handle and stow 9 mooring lines of chain and wire rope.
A mooring sequence diagram has been prepared to illustrate the handling procedure.
A practical equipment layout of valves, chokes, pipework and manifolds on the turret manifold deck has been established.
A feasibility study into the marketing prospects of the Rotating Turret System has been prepared.
From the technical and market investigations no optimum solution has wolved which would justify the development of a turrer design in the abstract.
A rotating turret assembly for oil receiving, handling and ship mooring and designed for a floating production vessel used for the exploitation of offshore oil reserves incorporates a number of innovative features.
The turret concept is covered under British Patent Specification No. 1447413 in the name of GEC Mechanical Handling Ltd. and the design has already been progressed through the preliminary stages by this company in collaboration with two other major U. K. organisations, Foster Wheeler Petroleum Development Ltd. and YARD Ltd.
Based on this conceptual work a turret design will now be established to meet the current specification of requirements and design criteria.
The areas of technological innovation to be developed during the project include the following:
a) Turret structure.
b) Support bearings and drive system.
c) Mooring line handling equipment.
d) Riser handling equipment.
e) Multipath fluid transfer system.
In each of the above areas of the overall system thework will be carried forward to the preparation of detailed assembly drawings

. Interface systems will also be worked on as required to develop a complete turret assembly.

Appel à propositions

Data not available

Régime de financement

DEM - Demonstration contracts

Coordinateur

GEC Alsthom Mechanical Handling Ltd
Contribution de l’UE
Aucune donnée
Adresse
Cambridge Road Whetstone
LE8 3LH Leicester
Royaume-Uni

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Coût total
Aucune donnée