Downhole · ESP
Downhole Sensor
A gauge attached below the motor that measures the ESP and well conditions in real time.
What it does
Reports intake pressure, temperatures, vibration and current leakage to the surface drive, usually through the power cable itself, so the system can be protected and optimized.
Basics
| Typical readings | Pump intake and discharge pressure and temperature, motor temperature, vibration, current leakage |
| Signal path | Through the power cable (wye point) |
| Reads at | Drive, surface panel or SCADA |
| Supply | Usually bundled with the ESP by the pump manufacturer |
Common failures
- Signal lost after a cable or motor insulation problem
- Sensor failure while the ESP keeps running
Troubleshooting
- Symptom
- Sensor data lost but ESP running
- Likely cause
- Ground fault interfering with the signal
- What to check
- Check insulation; some systems offer ground fault immunity