Puyang Zhongshi Group Co., Ltd.
Puyang Zhongshi Group Co., Ltd.
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Oilfield Integral Spring Casing Centralizer
The integral centralizer has ultra-high strength without any weak point. The centralizer provides High restoring forces while keeping starting and running forces at or near Zero lbf. This Minimizes drags during casing running and maximizes stand off during cementing operations.
| Model | Max.Out-Dia | Hooping In-Dia. | Total length | Amount of spring |
| (in) | (mm) | (mm) | (mm) | (mm) |
| 5-1/2" x 8-1/2" | 225±5 | 142-148 | 650±50 | 5 |
| 7" x 9-5/8" | 255±5 | 181-186 | 650±50 | 6 |
| 7" x 8-1/2" | 235±5 | 181-186 | 650±50 | 6 |
| 8-5/8 x 12-1/4" | 330±5 | 223-228 | 650±50 | 8 |
| 9-5/8 x 12-1/4" | 330±5 | 250-255 | 650±50 | 8 |
| 10-3/4 x 12-1/4" | 330±5 | 274-276 | 650±50 | 9 |
| 13-3/8"x17-1/2" | 450±5 | 342-347 | 650±50 | 11 |
| 18-5/8"x24" | 610±5 | 475-477 | 600±50 | 12 |
| 20"x26" | 660±5 | 509-511 | 600±50 | 12 |
