Title:
STEEL PRODUCTION RISER, OFFSHORE HYDROCARBON PRODUCTION SYSTEM, AND METHOD OF PRODUCING A HYDROCARBON STREAM
Document Type and Number:
WIPO Patent Application WO/2015/091616
Kind Code:
A3
Abstract:
A steel production riser (100) provided with an auxiliary buoyancy section (106) around the touchdown point (115) wherein the production riser is provided with a first set of external buoyancy modules. As a result of the first set of external buoyancy modules, the upward buoyancy force on the auxiliary buoyancy section in the body of water is smaller than the downward gravity force. The touchdown point is located within the auxiliary buoyancy section. The steel production riser may be used in a method for producing a hydrocarbon stream, whereby mineral hydrocarbon fluids produced from a subsea hydrocarbon reservoir are conveyed to a floating structure via the steel production riser.
Inventors:
LIM KOK-CHIENG (NL)
VAN DE GRAAF JAN WILLEM (NL)
VAN DE GRAAF JAN WILLEM (NL)
Application Number:
PCT/EP2014/078171
Publication Date:
October 01, 2015
Filing Date:
December 17, 2014
Export Citation:
Assignee:
SHELL INT RESEARCH (NL)
SHELL OIL CO (US)
SHELL OIL CO (US)
International Classes:
E21B17/01
Domestic Patent References:
| WO2006073887A2 | 2006-07-13 | |||
| WO2013167710A2 | 2013-11-14 |
Foreign References:
| US20120263542A1 | 2012-10-18 |
Other References:
SHANKAR BHAT ET AL: "Pragmatic Solutions to Touch-Down Zone Fatigue Challenges in Steel Catenary Risers", OFFSHORE TECHNOLOGY CONFERENCE, 3 May 2004 (2004-05-03), pages 3 - 6, XP055114602, DOI: 10.4043/16627-MS
Attorney, Agent or Firm:
MATTHEZING, Robert, Maarten et al. (CJ The Hague, NL)
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