Downhole · PCP
Tag Bar
A short sub with a cross pin below the stator.
What it does
Gives the rotor a hard stop to tag, so the crew can space it out at the right height inside the stator.
Basics
| Also called | Stop bushing, tag pin |
| Used during | Installation and space-out |
Common failures
- Worn or broken stop pin
- Tag bar set at the wrong depth
Troubleshooting
- Symptom
- No tag found during space-out
- Likely cause
- Stop pin missing or broken
- What to check
- Check the tally and run the tag again