Expandable packer with mounted exterior slips and seal
US7493945B2 · kind B2 · utility
59Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2008 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Apr 7, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1295
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A packer device includes a central packer mandrel and a radially surrounding expansion mandrel. At least one slip mandrel carrying wickers surrounds the expansion mandrel and is secured in place upon the expansion mandrel by an annular retaining ring. The slip mandrel is secured to the retaining ring by screw connectors that pass through the slip mandrel and into retainer segments. The retaining ring is clamped between the slip mandrel and segments. Additionally, the packer device carries a fluid seal that is made up of a thermoplastic material with elastomeric energizing elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.