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Feasibility Study of Disconnectible Drilling Risers

[+] Author Affiliations
Yousun Li, King Him Lo

Shell International E&P Inc., Houston, TX

Hugo Corvalan San Martin

Woodside Energy Ltd., Australia

Paper No. OMAE2008-57070, pp. 55-61; 7 pages
doi:10.1115/OMAE2008-57070
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

This study investigates the feasibility of an alternative deepwater drilling riser concept. The riser consists of two segments: a short upper segment suspending from a MODU, and a long freestanding lower segment that can be disconnected from the upper segment. The entire drilling riser can thus be moved to a new drilling location with the riser upper segment directly moved with the MODU and the disconnected lower segment moved by an AHV or heavy duty tug using a heave compensated landing system. The behaviors of this dis-connectible riser are studied. Numerical results demonstrate the feasibility of the dis-connectible riser concept.

Copyright © 2008 by ASME
Topics: Pipeline risers

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