Description: The Bevel Leader and the Milling Wimble are used with the inside casing drilling
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| Casing | Structure | Structure Size(mm) | Window length(mm) | For deviation | Seated way | Connector thread | | 51/2" | Ordinary | φ116×3370 | 1800-2000 | ≤30° | Block a pressure seal with anti-rotation, anti-upper and lower activity. | 27/8RGB | | Leak-proof type | φ116×3400 | | 7"(177.8) | Ordinary | φ150×4000 | 2400-2500 | RGB | | Leak-proof type | φ150×4200 |
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Milling Wimble
