Interventionless method of setting a casing to casing annular packer
US9580989B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2014 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Jun 3, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/128
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An annular packer to create an annulus seal that includes a solid mandrel with a first end, second end, central bore, and exterior. The annular packer includes first and second sealing elements connected to the exterior. The second sealing element is expanded radially by axial movement of at least a portion of the second sealing element. The annular packer includes a first piston movable from a first position to a second position. Pressure applied exterior of the mandrel moves a portion of the first sealing element away from the mandrel to create a first seal causing a pressure differential. The pressure differential moves the first piston to its second position axially moving at least a portion of the second sealing element to create a second seal against the casing. A port may be opened releasing the first seal, but the second seal remains set against the casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.