Downhole backup system and method
US7921921B2 · kind B2 · utility
25Cited by
19References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2008 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Sep 24, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1216
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole backup system includes, a tubular positionable within a downhole structure such that an annular space exists between the tubular and the downhole structure. The downhole backup system also includes, a plurality of wedges that are radially movably positioned within the annular space, and each of two opposing ends of the plurality of wedges are configured to completely cover the annular space at all possible radial positions of the plurality of wedges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.