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US 9,850,753 B2Granted
Cable integrity monitor for electromagnetic telemetry systems
AssigneeHalliburton Energy Services, Inc.
InventorRichard Graham Payne
Life of this patent
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Abstract
In some embodiments, an apparatus and a system, as well as a method and an article, may include a signal integrity monitor that senses the signal transmitted between a surface device and a downhole device. The signal integrity monitor is adapted to disconnect power from the communication system if a fault in the communication line is detected.
Claims9
An apparatus, comprising:
- a downhole metal structure, which is a tubing string;
- a downhole receiver in electrical communication with the downhole metal structure;
- a surface transmitter in electrical communication with the downhole metal structure;
- wherein the surface transmitter is configured to transmit a signal communicating both power and data to the downhole receiver;
- and
- a signal monitor that comprises a comparator circuit to monitor electrical communication between the surface transmitter and the downhole receiver, and if a fault in the electrical communication between the surface transmitter and the downhole receiver is sensed, to disconnect the surface transmitter from the downhole metal structure.
3 more elements
Dependencies are inferred from the claim text.