Slips for well pipe
US4715456A · kind A · utility
83Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1986 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | Feb 24, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/07
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hydraulically actuated slip assembly having a slip pivotally connected at its sides by parallel links to the side surfaces of a slip block with slip engaging surfaces which allow the slip to be engaged and disengaged from tubing or pipe and operated within a reduced area. An alternative embodiment utilizes a floating die to allow the parallel links to disengage the slip from the pipe in a compact configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.