Metal expandable element back-up ring for high pressure/high temperature packer
US8701787B2 · kind B2 · utility
18Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2011 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Feb 29, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1216
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An expandable backup ring includes an outer surface, an inner surface having a plurality of protrusions projecting radially inwardly, and a plurality of segments, the segments defined by a plurality of outer surface cuts. The plurality of outer surface cuts extends radially inwardly from the outer surface and partially into each of the plurality of protrusions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.