0

Full Content is available to subscribers

Subscribe/Learn More  >

Evaluation of Key Hydraulic Tensioner Performance Parameters for Ultra Deep Water Applications

[+] Author Affiliations
Alan Yu, Yongming Cheng

Technip, Houston, TX

Shankar Bhat

Shell Exploration & Production, Houston, TX

Paper No. OMAE2008-57465, pp. 415-428; 14 pages
doi:10.1115/OMAE2008-57465
From:
  • ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering
  • Volume 3: Pipeline and Riser Technology; Ocean Space Utilization
  • Estoril, Portugal, June 15–20, 2008
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4820-3 | eISBN: 0-7918-3821-8
  • Copyright © 2008 by ASME

abstract

Hydraulic tensioners are widely used to provide tension and stiffness to vertical risers on spar and tension leg platform floating production facilities. Their performance directly affects dynamic response of the risers and the global motions of the floating system. The coupling effect of the tensioners, risers and vessel becomes increasingly important as the water depth increases into the ultra deep. This paper evaluates key performance parameters of long-stroke high-tension hydraulic tensioners for ultra deepwater application. It derives the fundamental equations and evaluates key performance parameters and their impact on the riser and vessel responses. This paper also proposes data measurement locations and methods to collect field data for calibrating these key performance parameters for future hydraulic tensioner design. The key tensioner performance parameters are the gas constant and the cylinder friction. In addition for a typical spar riser configuration, the keel joint friction also plays an important role in the overall riser performance. Their importance increases as water depth increases to 8,000 feet and beyond due to the nature of the coupling effect, long stroke and high tension requirements. Gathering of full scale-test data for these parameters has been costly. With several 7000 to 8000 feet risers and tensioners to be installed in the next few years, a method of collecting field data and its analysis for calibrating against the current assumptions of these parameters is proposed.

Copyright © 2008 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In