Surface · Jet Pump
Wellhead Valves
The wellhead valving that sends power fluid down the tubing and takes the mixed return out of the annulus.
What it does
By reversing the flow at surface, the crew can circulate a free jet pump up to the wellhead for repair or a nozzle and throat change, with no workover rig.
Basics
| Normal flow | Power fluid in the tubing, return out the annulus |
| Reverse flow | Brings a free pump to surface |
| Watch | Power fluid injection pressure |
Common failures
- Valves leaking so the pump will not circulate out
- Wrong valve position at restart
Troubleshooting
- Symptom
- Pump does not arrive at surface when reversing
- Likely cause
- Standing valve not closing or a leaking wellhead valve
- What to check
- Check valve positions, then try wireline retrieval