Devices and related methods for actuating wellbore tools with a pressurized gas
US9771769B2 · kind B2 · utility
24Cited by
12References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2015 |
| Grant date | Sep 26, 2017 |
| Priority date | — |
| Expiry date | Mar 17, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/065
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for activating a wellbore tool includes a cylinder, a shaft, and a pressure dissipater. The cylinder has a first inner surface defining a smooth bore section and a second inner surface adjacent to the first inner surface. The shaft has a piston section that includes at least one seal forming a fluid seal with the first inner surface when the seal is at a nominal diameter. The pressure dissipater is formed along the second inner surface of the cylinder, the pressure dissipater contacts and physically destabilizes the at least one seal after the at least one seal exits the smooth bore section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.