Semi-submersible platform for offshore oil field operation and method of installing a platform of this kind
US6139224A · kind A · utility
15Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Dec 11, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B2021/505
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The platform comprises a buoyant sub-structure comprising a base and a plurality of columns upstanding from said base, a buoyant deck-hull mounted on the columns and means for ballasting and deballasting at least the base of said sub-structure. It further comprises means for tangentially guiding said deck-hull on said columns during deployment of the platform into a predetermined configuration by ballasting of the sub-structure while the deck-hull is floating and means for locking said deck-hull to the columns in said predetermined configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.