Drilling riser braking apparatus and method
US4617998A · kind A · utility
44Cited by
6References
37Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1985 |
| Grant date | Oct 21, 1986 |
| Priority date | — |
| Expiry date | Apr 8, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/09
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Method and apparatus for use in drilling a well from a floating vessel by means of a riser which connects the vessel's drilling equipment to a wellhead assembly adjacent the ocean floor. Braking apparatus is provided which is capable of arresting the vertical motions of the drilling riser and of securing the upper end of the riser to the vessel whenever the riser is disconnected from the wellhead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.