A Comparison of Ship-Mounted and Cage-Mounted Passive Heave Compensation Systems-Reference-Cited by-同舟云学术

A Comparison of Ship-Mounted and Cage-Mounted Passive Heave Compensation Systems

Published:2000-01-29 Issue:3 Volume:122 Page:214-221
ISSN:0892-7219
Container-title:Journal of Offshore Mechanics and Arctic Engineering
language:en
Short-container-title:

Author:

Driscoll Frederick R.¹,Nahon Meyer²,Lueck Rolf G.³

Affiliation:

1. Department of Mechanical Engineering and School of Earth and Ocean Sciences, University of Victoria, P.O. Box 3055, Victoria, British Columbia, V8W 3P6 Canada

2. Department of Mechanical Engineering, University of Victoria, P.O. Box 3055, Victoria, British Columbia, V8W 3P6 Canada

3. Centre for Earth and Ocean Research, University of Victoria, P.O. Box 3055, Victoria, British Columbia, V8W 3P6 Canada

Abstract

Tethered marine systems experience large tensile loads in their tether when operating in rough seas. Heave compensation systems can be used to reduce these loads and increase the safe operating sea states. In this work, a discrete representation of a passive heave compensator is developed and added to a finite-element model of a deep-sea ROV system to investigate the performance of ship-mounted and cage-mounted compensation systems. Numerical simulations are performed for operating depths ranging from 3280–16,400 ft (1000–5000 m) and a range of compensator stiffnesses. Both ship and cage-mounted systems reduced the natural frequencies, rms cage motion and rms tension, and extended the operating sea state of the ROV. During extreme seas, the cage-mounted compensator effectively eliminated all snap loads. However, the compensator’s characteristics must be carefully chosen because a poorly designed compensator can exacerbate operational problems. [S0892-7219(00)00903-1]

Publisher

ASME International

Subject

Mechanical Engineering,Ocean Engineering

Link

http://asmedigitalcollection.asme.org/offshoremechanics/article-pdf/122/3/214/5930211/214_1.pdf

Reference18 articles.

1. Niedzwecki, J. M., and Thampi, S. K., 1991, “Snap Loading of Marine Cable Systems,” Appl. Ocean Res., 13, pp. 210–218.

2. Driscoll, F. R., Lueck, R. G., and Nahon, M., 2000, “The Motion of a Deep-Sea Remotely Operated Vehicle System. Part 1: Motion Observations,” Ocean Eng., 27, pp. 29–56.

3. ISE, 1998, International Submarine Engineering Hysub 5000, 1734 Broadway Street, Port Coquitlam, B.C., Canada, V3C 2M8, web page, http://www.ise.bc.ca/rov.html#hys5000.

4. Driscoll, F. R., Lueck, R. G., and Nahon, M., 2000, “The Motion of a Deep-Sea Remotely Operated Vehicle System. Part 2: Analytic Model,” Ocean Eng., 27, pp. 57–76.

5. Bennett, P., and Forex, S., 1997, “Active Heave: The Benefits to Operations as Seen in the North Sea,” Proceedings, SPE/IADC Drilling Conference, pp. 207–217.

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