Well sealing device
US5024270A · kind A · utility
74Cited by
12References
6Claims
0Family size
Inventor
Key dates
| Filing date | Sep 26, 1989 |
| Grant date | Jun 18, 1991 |
| Priority date | — |
| Expiry date | Sep 26, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/065
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well sealing device using an internal propellant charge to drive slip segments outwardly against a well casing. A pin shears, releasing the device from its wire line prior to final setting of the slip segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.