Protection circuitry for a downhole measurement tool
US12224576B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 8, 2023 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | Aug 1, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/017
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Systems and methods corresponding to a downhole measurement tool to balance fault current in a protective inductor are disclosed herein. A triggerable network is provided which keeps an alternating current balanced in a protective choke during a phase-to-ground fault condition in a power cable or a downhole motor of an electrical submersible pump. The triggerable network causes a conducting of current during negative polarity voltage portion(s) of the phase-to-ground fault condition via a silicon-controlled rectifier having an anode and a cathode on a path of current conduction for the negative polarity voltage during the phase-to-ground fault condition and one or more Zener diodes, where an ending cathode of the one or more Zener diodes is coupled to a gate of the silicon-controlled rectifier and an ending anode of the one or more Zener diodes is coupled to the anode of the silicon-controlled rectifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.