Downhole · ESP
Cable Bands & Protectors
Metal bands that strap the power cable to the tubing, and cast protectors that clamp over the tubing couplings.
What it does
Hold the cable in place so it does not sag or move, and shield it from rubbing and crushing against the casing during running, operation and pulling.
Basics
| Bands | Stainless steel or Monel |
| Minimum | Two bands per tubing joint |
| More bands | Doglegs, tight spots, larger or deeper cable |
| Splices | Never band over a splice; band just above and below |
Common failures
- Bands too tight that crush the cable
- Too few bands, cable sags and bunches
- Missing protectors at couplings
Troubleshooting
- Symptom
- Cable damage found at couplings on pulling
- Likely cause
- No cross coupling protectors
- What to check
- Add protectors at every coupling in tight wells