Shock absorber for tubular storage or drill stands on a drilling ship
US3966054A · kind A · utility
5Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 22, 1975 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | May 22, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/14
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Means are described for absorbing energy when a drill string has been lowered into a tube for storage. The apparatus comprises a piston, orifice, fluid and spring in combination with a storage tube capable of holding a string of drill pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.