Pipe snubbing method and apparatus
US3999610A · kind A · utility
23Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1975 |
| Grant date | Dec 28, 1976 |
| Priority date | — |
| Expiry date | Oct 8, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B1/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pipe snubbing apparatus and method which may utilize either the draw works of a conventional rig or a pump to provide power for raising the movable gripping assembly. The movable gripper is moved downwardly by stored power, such as pressure stored in an accumulator. The rate of movement of the movable gripping assembly may be controlled by controlling flow of fluid to and from a piston and cylinder assembly associated with the movable gripping assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.