Numerical and experimental analysis of a retrievable offshore loading facility
- Danish Hydraulic Inst., Hoersholm (Denmark)
- MCS International, Aberdeen (United Kingdom)
ROLF (Retrievable Offshore Loading Facility) has been proposed as an alternative offshore oil export tanker loading system for the North Sea. The system consists of a flexible riser ascending from the seabed in a lazy wave configuration to the bow of a dynamically positioned tanker. In order to supplant and support the numerical analyses performed to design the system, an extensive model test program was carried out in a 3D offshore basin at scale 1:50. A model riser with properties equivalent to the properties of the oil filled prototype riser installed in seawater was tested in several combinations of waves and current. During the tests the forces at the bow of the tanker and at the pipeline end manifold were measured together with the motions of the tanker and the riser. The riser motions were measured by means of a video based 3D motion monitoring system. Of special importance was accurate determination of the minimum bending radius for the riser. This was derived based on the measured riser motions. The results of the model tests were compared to numerical analyses by an MCS proprietary riser analysis program.
- OSTI ID:
- 194725
- Report Number(s):
- CONF-950695-; ISBN 0-7918-1307-X; TRN: IM9611%%227
- Resource Relation:
- Conference: International conference on offshore mechanics and arctic engineering, Copenhagen (Denmark), 18-22 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of OMAE 1995 -- Proceedings of the 14. international conference on offshore mechanics and arctic engineering. Volume 1, Part B: Offshore technology; Chakrabarti, S.K. [ed.] [Chicago Bridge and Iron Technical Services, Plainfield, IL (United States)]; Gudmestad, O.T. [ed.] [Statoil, Stavanger (Norway)]; Sparks, C. [ed.] [Inst. Francais du Petrole, Rueil-Malmaison (France)]; Morrison, D.G. [ed.] [Shell E and P Technology Co., Houston, TX (United States)]; PB: 539 p.
- Country of Publication:
- United States
- Language:
- English
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