Well packer
US5197542A · kind A · utility
24Cited by
12References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1992 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Mar 31, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1208
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
There is disclosed a well packer for use in closing off the annulus between a casing string in which the packer is connected and a well bore into which the casing string is lowered. The packer includes a mandrel connected as part of the casing string, a sleeve of elastomeric material surrounding an intermediate portion of the mandrel and adapted to be inflated into engagement with the well bore, and relatively short, substantially rigid but flexible, overlapping strips disposed about only upper and lower portions of the sleeve for expansion therewith into engagement with the well bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.