STOP COLLARS
Features:
- The stop collars are available in three types: Knock-On Type, Spiral Nail Type and Set Screw Type.
- The stop collars can be installed on any position on casing to limit the axial movement of centralizers and cement baskets.
Technical Parameters:
| Specifications | 13 3/8" | 10 3/4" | 9 5/8" | 8 1/8" | 7 5/8" | 7" | 5 1/2" | 5" | 4 1/2" |
| I.D.,mm | 338 | 272 | 245 | 206 | 193 | 177 | 139 | 126 | 114 |
| O.D.,mm | 350 | 284 | 257 | 218 | 285 | 189 | 151 | 138 | 126 |
| Holding Force ,KN | 40 | 40 | 40 | 30 | 30 | 30 | 30 | 24 | 24 |
SCRATCHER
Features
The stractcher can be used to wipe the mud cake inside the upper casing and open hole and improve cementing.
Technical Parameters:
| Casing Size | 7" | 5 1/2" |
| Open hole Size ,mm | 215.9-222.2 | 184-215.9 |
| Max O.D. ,mm | 279 | 254 |
