Downhole · Plunger Lift
Tubing Stop & Standing Valve
The device that holds the bumper spring at the bottom of the tubing. When a standing valve is used, it also keeps fluid from flowing back out of the tubing.
What it does
Fixes the bottom of the plunger trip. The standing valve holds the liquid in the tubing so each cycle does not have to lift it again from the formation.
Basics
| Options | Tubing stop, collar stop or standing valve |
| Holds | The bumper spring |
| Standing valve | More common in wells with low bottomhole pressure |
Common failures
- Standing valve leaking back
- Collar stop unseated by high gas flow velocity
Troubleshooting
- Symptom
- Liquid level in the tubing drops during shut in
- Likely cause
- Standing valve leaking
- What to check
- Retrieve and service the valve