Seal and seal assembly for well tools
US4753444A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1986 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | Oct 30, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/944
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A seal and seal assembly for use with well tools, such particularly as well packers, for sealing the annulus between the well packer mandrel and the wall of a well tubing such as casing. The seal is fabricated of an elastomeric-like material comprising fluorocarbon resins, poly arylene ketone, and carbon fibers mounted between end retainer assemblies each comprising a mesh anti-extrusion ring, a tapered mesh backup ring, and a metal backup shoe. The seal has internal longitudinally spaced V-shaped recesses to cause the seal to buckle radially outwardly as it is compressed longitudinally to increase the stress along the middle portion of the seal where the seal meets the well casing inner wall. The seal is useful at high temperatures and pressures such as 550 degrees F. and greater than 15,000 psi.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.