Title:
JACK-UP RIG WITH LEG-SUPPORTED BALLAST LOADS
Document Type and Number:
WIPO Patent Application WO/2011/116254
Kind Code:
A3
Abstract:
A jack-up rig for offshore operations comprises a hull. In addition, the rig comprises a support leg moveably coupled to the hull. The support leg has a central axis, an upper end, and a lower end opposite the upper end. Further, the support leg is adapted to be axially raised and lowered relative to the hull. The rig also comprises a ballast tank movably coupled to the support leg. The ballast tank is adapted to be axially raised and lowered relative to the support leg and the hull.
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| WO2002084031 | JACK-UP MODU AND JACKING METHOD AND APPARATUS |
Inventors:
LENDERS BERNARDINO (US)
Application Number:
PCT/US2011/028926
Publication Date:
December 22, 2011
Filing Date:
March 18, 2011
Export Citation:
Assignee:
NAT OILWELL VARCO LP (US)
International Classes:
E02B17/04; B63B35/44
Domestic Patent References:
| WO2008094573A1 | 2008-08-07 |
Foreign References:
| US4916999A | 1990-04-17 | |||
| US20060051164A1 | 2006-03-09 | |||
| US20090208294A1 | 2009-08-20 |
Other References:
See also references of EP 2547829A4
Attorney, Agent or Firm:
FALESKI, Thaddeus, J. (P.C.P.O.Box 326, Houston Texas, US)
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