Working platform for oil drilling operations in ice covered sea areas
US4295758A · kind A · utility
22Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1979 |
| Grant date | Oct 20, 1981 |
| Priority date | — |
| Expiry date | Nov 27, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B2211/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A working platform for oil drilling operations in ice covered sea areas, which essentially comprises oil drillig equipment, an oil drilling pipe connecting the oil drilling equipment to the sea bottom, and a floating frame having a buoyancy and a strength enough to stand the pressure of an ice covering and being movable in accordance with movement of ice covering; the floating frame is disposed surrounding such a surface area of the ice covered sea as lying around the oil drilling pipe, whereby the pipe is protected by the floating frame against action of the pressure of ice covering during oil drilling operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.