kelly
Minimum Order: 0
Quality/Safety Certification: 0.00
Kelly is the driving section of whole drill stem
Kelly is the driving section of whole drill stem. Kelly is available with square Kelly and hexagonal Kelly. Technical parameters conform to API Spec7-1 ,SY/T6509-2000.
Technical specification and parameter | |||||||||||||
| size in | Upper box connection | Lower pin connection | I.D(mm) | Driving section(mm) | |||||||||
| type(LH) | O.D(mm) | Thread type(LH) | Square | Hexed | Cross flat | For square Kelly | Cross corner for hexed Kelly | ||||||
| Std | Optional | Std | Optional | Square | O.D (mm) | Hexed | O.D (mm) | ||||||
| 2 1/2 | 6 5/8REG | 4 1/2REG | 196.8 | 146.0 | NC26 | 85.7 | 31.8 | 63.5 | 83.3 | ||||
| 3 | 6 5/8REG | 4 1/2REG | 196.8 | 146.0 | NC31 | 104.8 | NC26 | 85.7 | 44.4 | 31.8 | 76.2 | 100.0 | 85.7 |
| 3 1/2 | 6 5/8REG | 4 1/2REG | 196.8 | 146.0 | NC38 | 120.6 | NC31 | 104.8 | 57.2 | 44.4 | 88.9 | 115.1 | 100.8 |
| 4 1/4 | 6 5/8REG | 4 1/2REG | 196.8 | 146.0 | NC46 | 158.8 | NC38 | 120.6 | 71.4 | 57.2 | 108.0 | 141.3 | 122.2 |
| 6 5/8REG | 4 1/2REG | 196.8 | 146.0 | NC50 | 161.9 | NC38 | 120.6 | 71.4 | 57.2 | 108.0 | 141.3 | 122.2 | |
| 5 1/4 | 6 5/8REG | 196.8 | 5 1/2FH | 177.8 | NC46 | 158.8 | 82.6 | 76.2 | 133.3 | 175.4 | 151.6 | ||
| 6 5/8REG | 196.8 | NC56 | 177.8 | NC50 | 161.9 | 82.6 | 82.6 | 133.3 | 175.4 | 151.6 | |||
| 6 | 6 5/8REG | 196.8 | 5 1/2FH | 177.8 | 88.9 | 152.4 | 173 | ||||||
| 6 5/8REG | 196.8 | NC56 | 177.8 | 88.9 | 152.4 | 173 | |||||||
