Slip device for wellbore tubulars
US9316073B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2013 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | Jan 4, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/063
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A slip device includes a housing forming an axial bore, an upper set of slips spaced axially above a lower set of slips, and a rack and pinion actuator radially moving the upper set of slips and the lower set of slips between a retracted position and an extended position to grip a tubular disposed in the bore. The upper set of slips and the lower set of slips can be oriented to resist downward movement of the gripped tubular and to permit upward movement of the gripped tubular. One of the upper set of slips and the lower set of slips can be oriented to resist upward movement of the gripped tubular and the other of the upper set of slips and the lower set of slips can be oriented to resist downward movement of the gripped tubular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.