Title:
ANTI-RECOIL CONTROL DESIGN USING A HYBRID RISER TENSIONING SYSTEM IN DEEPWATER DRILLING
Document Type and Number:
WIPO Patent Application WO/2016/100382
Kind Code:
A3
Abstract:
A riser data logging system can be installed on the riser top to provide real time information of the riser, instead of or in addition to relying on sensors installed on a tensioner. The riser recoil detection system can thus be made independent of any motion of the vessel. This logging system can feedback the riser top acceleration, velocity, position, and the wire-line tensions into a controller. By comparing the acceleration difference between the riser top and the vessel body, the controller can provide more reliable and faster detection of events occurring on a vessel, potentially detecting the condition within one second. If the acceleration exceeds a certain limit, the electrical tensioners are able to reduce the wire-line tension nearly instantaneously, providing a much more effective anti-recoil control that conventional hydro- pneumatic tensioners.
Inventors:
WU YIN (US)
BOURGEAU EDWARD PETER KENNETH (US)
BOURGEAU EDWARD PETER KENNETH (US)
Application Number:
PCT/US2015/065880
Publication Date:
August 18, 2016
Filing Date:
December 15, 2015
Export Citation:
Assignee:
TRANSOCEAN SEDCO FOREX VENTURES LTD
WU YIN (US)
BOURGEAU EDWARD PETER KENNETH (US)
WU YIN (US)
BOURGEAU EDWARD PETER KENNETH (US)
International Classes:
E21B7/12
Domestic Patent References:
WO2013096128A1 | 2013-06-27 | |||
WO2013154566A1 | 2013-10-17 |
Foreign References:
US20130158680A1 | 2013-06-20 | |||
US7328741B2 | 2008-02-12 | |||
US5209302A | 1993-05-11 | |||
US20140010596A1 | 2014-01-09 |
Other References:
See also references of EP 3234296A4
Attorney, Agent or Firm:
SMITH, Darren et al. (1301 McKinney Suite 510, Houston TX, US)
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