Troll Oil Pipeline: Current measurements and modelling. Data basis for pipeline free span design
- Statoil, Stavanger (Norway)
- Nansen Environmental and Remote Sensing Center, Solheimsvik (Norway)
- SINTEF NHL, Trondheim (Norway)
The Troll Oil Pipeline -- TOR -- is a dedicated pipeline for transportation of oil from the Troll field to the onshore terminal at Mongstad on the west coast of Norway. When installed, TOR will be the first pipeline installed in a deep Norwegian fjord, namely Fensfjorden. The water depth ranges from about 250 m at the sill down to about 500 m at the deepest part. The maximum depth is 540 m and is located just inside of the sill. The entrance to the Fensfjord consists of a deep canyon in the Norwegian Trench leading into a sill just northwest of Holmengra. From the sill depth down to the maximum depth, the pipeline route follows a steep ravine through an area of rough and rocky sea bed. Current measurements have revealed higher current velocities than expected in this area. These currents were concluded to be due to heavy water occasionally overflowing the sill and into the fjord. In the present paper, the extensive measurement program, including 27 current meters in operation up tc 16 months, is described including aspects of the data analysis. In conjunction with the measurements, also laboratory and numerical modelling studies were performed and the results from these are presented. A comparison of measurements and model results are also presented.
- OSTI ID:
- 205453
- Report Number(s):
- CONF-950695-; ISBN 0-7918-1311-8; TRN: IM9615%%233
- 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 5: Pipeline technology; Mercati, D. [ed.] [Snamprogetti SpA, San Donato Milanese (Italy)]; Murray, A. [ed.]; PB: 608 p.
- Country of Publication:
- United States
- Language:
- English
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