Downhole · Completion
Sliding Sleeve & ICV
A port in the tubing that can be opened or closed to let a zone produce or shut it off.
What it does
A sliding sleeve is shifted mechanically by a tool run on slickline or coiled tubing. In intelligent completions an interval control valve does the same job remotely, one per zone, without intervention.
Basics
| Sliding sleeve | Shifted on slickline or coiled tubing |
| Interval control valve | Operated remotely from surface |
| Used in | Multizone and intelligent completions |
Common failures
- Sleeve stuck by scale or debris, cannot be shifted
Troubleshooting
- Symptom
- Zone will not open or close on command
- Likely cause
- Deposits in the sleeve or a control line problem
- What to check
- Review deposits, test the control line, plan a cleanout