Permanent anchoring device
US7665516B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2007 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Dec 31, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/01
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An anchoring device to secure a packer assembly within a casing, including a frangible ring having a plurality of grips on an outer circumference, wherein a first end of the frangible ring includes a plurality of circumferentially spaced slots, and an expansion ring having a plurality of castellations configured to engage the slots of the first end of the frangible ring is disclosed. A method to secure a packer assembly in a casing, including engaging a plurality of arcuate segments of a segmented ring with a plurality of slots in a first end of a frangible ring, engaging a plurality of castellations of an expansion ring with the plurality of slots on a second end of the frangible ring, and moving the expansion ring in an axial direction towards the frangible ring and splitting the frangible ring into a plurality of slip segments, thereby radially extending the plurality of slip segments and segmented ring into the casing is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.