Ice worthy jack-up drilling unit with gas agitation and leg ice shields
US8801333B2 · kind B2 · utility
1Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2011 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | May 19, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02B2017/0082
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system operates like a conventional jack-up rig while in open water with the hull jacked up out of the water. However, in the event of ice conditions, the legs are held in place by cans embedded in the sea floor to resist lateral movement of the rig and the hull is lowered into the water into an ice defensive configuration. The hull is specifically shaped with an ice-bending surface to bend and break up ice that comes in contact with the hull while in the ice defensive configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.