
Introduction:
The topper mill is a grinding tool used for milling the bevel of reconnection sleeves, removing minor localized deformations in casing pipes, and trimming burrs or flares on casing collars caused by various tools during tripping or by perforation operations. It also clears mineral deposits and other hard debris adhering to the wellbore wall to restore the original bore diameter. The tool features impact resistance and a long service life.
Features and Benefits:
★ It can repair casing deformation, flares, and burrs, effectively restoring the wellbore drift diameter.
★ It integrates trimming, milling, and cleaning functions, adapting to various well conditions.
★ It features impact resistance, a long service life, and stable, reliable operation.
O.D. mm | Connection | Well Hole Range mm |
89 | NC26、3-3/8REG | 95.2-101.6 |
97 | 107.9-114.3 | |
110 | NC31、2-7/8REG、3-1/2REG | 117.5-127 |
121 | 130-139.7 | |
130 | 142.9-152.4 | |
140 | NC38、3-1/2REG、4-1/2REG | 155.6-165.1 |
156 | 168-187.3 | |
178 | 190.5-209.5 | |
200 | NC50、4-1/2REG | 212.7-241.3 |
232 | 244.5-269.9 | |
257 | 6-5/8REG | 273-295.3 |
279 | 298.5-317.5 | |
295 | 320.6-346.1 | |
330 | 349.3-406.4 | |
381 | 406.4-444.5 | |
406 | 7-5/8REG | 431.8-508 |
432 | 457.2-533.4 | |
534 | 558.8-660 | |
686 | 711.2-863.6 |