Downhole wire integrity and propagation delay determination by signal reflection
US11994021B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2018 |
| Grant date | May 28, 2024 |
| Priority date | — |
| Expiry date | Sep 21, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus, method, and system for determining the propagation delay for a downhole wire and/or for monitoring the integrity of a downhole wire. The apparatus includes a first tool component and a second tool component spaced apart from the first tool component and communicatively coupled by a wire. The tool components include impedance altering devices configured to alter, for a predetermined period of time, either the source impedance at a first termination point of the wire and/or the load impedance at a second termination point of the wire sufficient to generate a characteristic signal reflection upon the transmission of a signal along a length of the wire between the first tool component and the second tool component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.