Concave-Bottom Mill Shoe
The concave bottom mill shoe is used to grind downhole small objects and other unstable fallen objects.
Technical specifications and parameters
| Type | OD (mm) | Connection(Box) | Hole size(mm) |
|---|---|---|---|
| MA89 | 89 | 2 3/8 REG | 95.2-101.6 |
| MA97 | 97 | NC26 | 107.9-114.3 |
| MA110 | 110 | NC26 | 117.5-127.0 |
| MA121 | 121 | NC31 | 130.0-139.7 |
| MA130 | 130 | NC38 | 142.9-152.4 |
| MA140 | 140 | NC38 | 155.6-165.1 |
| MA156 | 156 | NC38 | 168.0-187.3 |
| MA178 | 178 | NC50 | 190.5-209.5 |
| MA200 | 200 | NC50 | 212.7-241.3 |
| MA232 | 232 | NC50 | 244.5-269.5 |
| MA257 | 257 | 6 5/8 REG | 273.1-295.3 |
| MA279 | 279 | 6 5/8 REG | 298.5-317.5 |
| MA295 | 295 | 6 5/8 REG | 320.6-346.1 |
| MA330 | 330 | 6 5/8 REG | 349.3-406.4 |
| MA381 | 381 | 7 5/8 REG | 406.4-444.5 |
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