Low fluid level valve
US10619447B2 · kind B2 · utility
3Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2017 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Feb 13, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A valve collar for a downhole packer includes a flow path. The flow path includes an opening valve and closing valve. The valve collar further includes a lockout valve piston. The lockout valve piston is positioned such that in an unset position, the flow path is open and in a set position, the flow path is blocked by the lockout valve piston. The lockout valve piston may be adapted to be shifted from the unset position to the set position by a pressure spike inside the valve collar. The lockout valve piston may be held in the unset position by a temporary restraint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.