Retrieving tool for downhole packers utilizing non-rotational workstrings
US5224547A · kind A · utility
15Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1991 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Apr 30, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for retrieving downhole devices is disclosed. The apparatus of the present invention includes a retrieving device that can be run on non-conventional workstrings such as coiled tubing, wireline, or electric line. The apparatus comprises a power mandrel, an inner sleeve mandrel slidably disposed within the power mandrel, and an overshot means. Means are provided to translate longitudinal movement of the power mandrel into rotational movement of the inner mandrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.