Downhole oil and gas well jacking tool for use with coil tubing unit
US5370180A · kind A · utility
14Cited by
4References
10Claims
0Family size
Inventor
Key dates
| Filing date | Dec 2, 1993 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Dec 2, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B31/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A coil tubing supported jacking tool can be used to remove articles that are stuck in an oil and gas well casing bore. The coil tubing unit transmits pressurized fluid to the tool body. At its lower end, the tool body grips the stuck article. A piston chamber expands to set slips for anchoring the tool body to the well casing. The piston then moves upwardly away from the slips, pulling the stuck article free.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.