Well packer
US4524825A · kind A · utility
72Cited by
11References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1983 |
| Grant date | Jun 25, 1985 |
| Priority date | — |
| Expiry date | Dec 1, 2003 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1292
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The packer of the present invention includes mandrel means having first ratchet means and lug means disposed thereon, second ratchet means and drag spring means associated with tubular housing means surrounding said mandrel means, said housing means including slot means on the interior thereof, radially expandable slip means disposed about said mandrel means, a compressible packer element disposed about the lower end of said mandrel means, and packer element compression means associated with said mandrel means and said housing means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.