Downhole tubing shift tool and method
US8813856B1 · kind B1 · utility
3Cited by
3References
17Claims
0Family size
Inventors
Key dates
| Filing date | Apr 15, 2011 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Jul 23, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/042
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus for selectively reciprocating a downhole device in a wellbore relative to an upper portion of production tubing, so that the upper portion of production tubing does not need to be lifted to operate the downhole device. A shift tool between the upper production tubing and the deflector assembly is designed to lift a deflector assembly independently of the upper production tubing. The shift tool is operated by pressurized fluid delivered from the surface, for example with a fluid-delivery device on the end of coiled tubing lowered through the production tubing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.