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Teflon/Nylon Casing drift and tubing drift
Drift for casings are available in two types: Sub Type Drift manufactured with threads on both top and bottom ends. The top end is connected with the drill string, while the bottom end is standby.
Bail Type Drift comprises of gauge plate and connecting rod.
Double Bail Drift for tubing or drill pipe is usually used on the ground. The shape of drift diameter gauge is a long cylindrical body with sucker rod thread on both ends. Drifting is done manually.
| echnical specifications and parameters for Drift | |||||||
| Casing drift(in) | 4 1/2 | 5 | 5 1/2 | 5 3/4 | 6 5/8 | 7 | |
| O.D.(mm) | 92-95 | 102-107 | 114-118 | 119-128 | 136-148 | 146-158 | |
| Length(mm) | 500 | 500 | 500 | 500 | 500 | 500 | |
| Up Conn. | NC26 | NC26 | NC31 | NC31 | NC31 | NC38 | |
| 2 3/8TBG | 2 7/8TBG | 2 7/8TBG | 2 7/8TBG | 2 7/8TBG | 3 1/2TBG | ||
| Down Conn. | NC26 | NC26 | NC31 | NC31 | NC31 | NC38 | |
| 2 3/8TBG | 2 7/8TBG | 2 7/8TBG | 2 7/8TBG | 2 7/8TBG | 3 1/2TBG | ||
| Technical specifications and parameters for Drift | ||||||
| Tubing drift(in) | 1 1/2 | 2 | 2 1/2 | 3 | 3 1/2 | 4 |
| O.D.(mm) | 38 | 48 | 59 | 73 | 84 | 95 |
| Length(mm) | 500 | 500 | 500 | 500 | 500 | 500 |
| Pipe type | Specifications(in) | Drift size | |
| Length (mm) | Min.diameter (mm) | ||
| Casing | <=8 5/8 9 1/8~13 3/8 >=16 | 150 , 305 , 305 | d-3.18 d-3.97 d-4.76 |
| Tubing | <=2 7/8 >=3 1/2 | 1067 , 1067 | d-2.38 d-3.18 |
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