Smart downhole control
US9267356B2 · kind B2 · utility
0Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 2012 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Jul 26, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole control system can include a pair of drive lines passing through a wellbore member such as a tubing hanger, and a plurality of hydraulic switches, each in communication with the drive lines. Each hydraulic switch can have a unique pressure band, wherein the switch only responds when the pressure in the drive lines is within the unique pressure band. Once the pressure in the drive lines is within the pressure band, the switch can open or close in response to a pressure differential in the drive lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.