Electro hydraulic downhole control device
US5832996A · kind A · utility
47Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1997 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Feb 14, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86879
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole controller for a flow control device. The controller is responsive to commands from the surface or from downhole and controls the flow device using a four way solenoid actuated spool valve and a hydraulically actuated piston system connected to the flow control device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.