Method and apparatus for retrieving wire line from a well bore
US5265676A · kind A · utility
2Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1992 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Mar 12, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B31/125
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A wire line mass or bird nest is retrieved from a well bore by running into the well bore a coiled rod such that a lower pointed end of the coiled rod engages the wire line mass. The coiled rod is rotated to draw the wire line mass upwardly into entangled relationship with the coiled rod; whereupon the coiled rod and wire line mass can be removed together from the well bore. Outward projections on the coil rod prevent the wire line mass from slipping off the coiled rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.