Puyang Zhongshi Group Co., Ltd.
Puyang Zhongshi Group Co., Ltd.
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Oilfield Drilling Equipment API Multiple Stage Cementing Collars
The Multiple Stage Cementing Collar provides a means of opening and closing port holes for cement displacement and positive containment of the cement after displacement. All internal parts are drillable, and are held from rotating during drilling.
| Specifications (in) | 5 1/2" | 7" | 9 5/8" | 13 3/8" |
| Max O.D.(mm) | Φ170 | Φ208 | Φ283 | Φ381 |
| Drill-out I.D.(mm) | Φ122 | Φ155 | Φ220 | Φ315 |
| Overall Length (mm) | 1082 | 1182 | 1222 | 1280 |
| Rated Load | 140 | 170 | 210 | 300 |
| Sealing capacity (Mpa) | 25 | 25 | 25 | 25 |
| Opening Pressure (Mpa) | 13 | 13 | 13 | 14 |
| Closing Pressure (Mpa) | 5 | 5 | 5 | 5 |
| Lower Sliding Sleeve I.D.(mm) | Φ85 | Φ115 | Φ176 | Φ203 |
| Upper Sliding Sleeve I.D. (mm) | Φ95 | Φ125 | Φ197 | Φ285 |
