Downhole tool actuating apparatus and method that utilizes a gas absorptive material
US6695061B2 · kind B2 · utility
100Cited by
27References
67Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2002 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Feb 27, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/065
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An actuator uses a gas absorptive material to produce displacement of a member of the actuator. In a described embodiment, an actuator includes a metal hydride powder. When the powder absorbs hydrogen gas, it expands and displaces a piston. When the powder discharges hydrogen gas, the powder contracts, displacing the piston in an opposite direction. Various methods of controlling gas absorption and discharge are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.