Method and apparatus for communications in a wellbore
US6768700B2 · kind B2 · utility
48Cited by
20References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2001 |
| Grant date | Jul 27, 2004 |
| Priority date | — |
| Expiry date | May 31, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/0285
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole string includes a system having an actuator module that is responsive to electrical power and signals communicated down a cable, such as a permanent downhole cable (PDC). In addition, a backup mechanism, such as an inductive coupler mechanism or another type of wireless apparatus, can be used as a backup to restore power and communications with the downhole system. For example, if the cable fails for some reason, power and signals can still be communicated with the inductive coupler mechanism or other wireless mechanism to control operation of the system or to receive signals from the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.