Dual column semisubmersible for offshore application
US8267032B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Nov 20, 2007 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Nov 20, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B35/4413
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A dual column semisubmersible floating platform for use in offshore applications has a hull configuration including vertical support columns, pontoons connecting the lower ends of the vertical support columns by way of the connecting nodes, and a deck structure supported at an upper end of the columns. The vertical columns are arranged in pairs with one of the pair of vertical columns disposed a distance outward from the second of the pair. Arranging the columns in pairs provides for improved motions, more efficient deck structures and an improved opportunity to optimize the overall system for a particular application. The dual column semisubmersible can support offshore hydrocarbon drilling and production, including the use of wet trees or dry trees for hydrocarbon production. Risers can be supported on the pontoon and extended to the deck, and the structure can be anchored by mooring lines extending along the outboard face of the outboard columns extending radially outward and downward from their lower ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.