Puyang Zhongshi Group Co., Ltd.
Puyang Zhongshi Group Co., Ltd.
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Rigid Roller Casing Centralizer
Rigid Roller Casing Centralizerare designed in rigid body with straight or spiral blades. Rollers provide low drag to get casing, liners, or screens to bottom successfully with reduced rig time and costs.Minimal roller-contact area in open hole applications reduces the risk of differential sticking and provides optimal standoff for increased operational efficiency.
| Specification | casing size (mm) | Hole Size (mm) | Inner Diameter (mm) | Outer Diameter (mm) |
| 4-1/2″×6″ | 114 | 152 | 118 | 146 |
| 5"×6 5/8" | 127 | 168 | 131 | 162 |
| 5-1/2″×8-1/2″ | 140 | 216 | 142 | 210 |
| 7″×8 1/2″ | 178 | 216 | 182 | 210 |
| 7"× 9-1/2" | 178 | 241 | 182 | 235 |
| 9-5/8″×12-1/4″ | 244 | 311 | 248 | 305 |
| 13-3/8″×17-1/2" | 340 | 445 | 344 | 439 |
