Centralizers & Stop Collars (API 10D)
| Type | Function |
|---|---|
| Bow Spring Centralizer | Flexible spring bows. Provide radial restoring force to center casing in wellbore |
| Rigid Centralizer | Solid blades. Higher restoring force |
| Semi-Rigid Centralizer | Curved blades. Moderate stiffness |
| Stop Collar (Slip-On) | Set screw or friction grip. Prevents centralizer movement |
| Stop Collar (Set Screw) | Multiple set screws for positive location. No welding required |