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Riser Recoil Analysis at a Harsh Environment, Deepwater Site

[+] Author Affiliations
Matthew J. Stahl

Stress Engineering Services, Houston, TX

Momen Wishahy, James N. Brekke

GlobalSantaFe Corporation, Houston, TX

Paper No. OMAE2004-51628, pp. 1113-1121; 9 pages
doi:10.1115/OMAE2004-51628
From:
  • ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering
  • 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, Parts A and B
  • Vancouver, British Columbia, Canada, June 20–25, 2004
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3743-2 | eISBN: 0-7918-3738-6
  • Copyright © 2004 by ASME

abstract

Riser recoil analysis for drilling at a harsh environment, deepwater site is particularly challenging. Recoil analysis results are used in conjunction with results of other riser analysis to develop a practical and safe riser management plan for drilling with a dynamically-positioned drillship at a site where rapidly-developing, high seastates occur frequently. Details of the recoil analysis are discussed along with brief references to other riser analyses that were carried out. The recoil analysis showed that criteria to avoid contact between the LMRP and BOP stack after disconnect and to limit slack in the riser tensioner ropes governed the selection of top tension settings. These recoil criteria also governed the maximum sea state in which the riser could remain connected. Recoil analysis was an important part of the effort to develop a practical and safe drilling riser management plan for a challenging location.

Copyright © 2004 by ASME
Topics: Pipeline risers

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