Downhole · ESP
Cable Splice
The joint that connects the main power cable to the motor lead extension, or two lengths of cable, rebuilt layer by layer to match the cable.
What it does
Restores conductor, insulation and protective layers across the joint so it holds the same voltage, temperature and pressure as the cable.
Basics
| Types | Taped splice or connector type |
| Placement | Never over a tubing collar |
| Banding | One band just above and one just below |
Common failures
- Poor workmanship that leaves voids or contamination
- Splice landed over a collar and damaged
Troubleshooting
- Symptom
- Insulation fault located at splice depth
- Likely cause
- Splice failure
- What to check
- Re-make the splice with a qualified splicer and record depth