Specifications
1.API stage cementer2. inner-closing structure
3. The pressure-relief design prevents fluid trapping
API stage cementer
1.The YFZ-A stage cementer can be permanently self-locking in the closing position,with inner-closing structure.
2.The pressure-relief design prevents fluid trapping and compression between the opening device and the closing plug during the closing phase.
3.The inner seats which are made of the nitrile rubber/aluminum material and the anti-rotation structure are easily drillable.
4.With pumping-down plug,it is used in the operation of continuous cementing.
Main Parameters:
Specifications,mm | Φ139.7 | Φ177.8 | Φ244.5 | Φ273 |
Max O.D.,mm | 170 | 208 | 283 | 308 |
Drill-out I.D.,mm | 122 | 155 | 220 | 250 |
Overall length,mm | 1082 | 1182 | 1222 | 1230 |
Rated load,t | 140 | 170 | 210 | 240 |
Sealing capacity,MPa | 25 | 25 | 25 | 25 |
Opening pressure,MPa | 7 | 7 | 7 | 7 |
Closing pressure,MPa | 5 | 5 | 5 | 5 |
Opening plug seat I.D.,mm | 85 | 115 | 176 | 225 |
Closing plug seat I.D. | 95 | 127 | 197 | 197 |
