508-5*15 Rotary drilling rig friction kelly bars
Friction type drill Kelly bar is a kind of drill pipe type with international advanced six-ribs distribution technology composition.The Kelly bar can generate pressure force when the Kelly bar rotarying can produce peripheral force and the rotary passing down the pressure force can produce the friction force.
Specification
| No. |
Diammeter of The First Section
|
Sections | Key Pressure Type | Length of per section(m) | Drill depth | Torque(KN.M) | ||
| 1 | ¢299 | 3 | 4 | Friction | 9-14 | 24-65 | 100 -120 | |
| 2 | ¢342 | 3 | 4 | 5 | Friction | 9 - 14 | 24 - 65 | 100 -120 |
| 3 | ¢355 | 3 | 4 | 5 | Friction | 9 - 14 | 24 - 65 | 100-120 |
| 4 | ¢368 | 3 | 4 | 5 | Friction | 9 - 14 | 24 - 65 | 150-180 |
| 5 | ¢377 | 3 | 4 | 5 | Friction | 9 - 14 | 24 - 65 | 150-180 |
| 6 | ¢394 | 3 | 4 | 5 | Friction | 9 - 15 | 24 - 70 | 180-200 |
| 7 | ¢406 | 3 | 4 | 5 | Friction | 9 - 15 | 24 - 70 | 180-200 |
| 8 | ¢419 | 3 | 4 | 5 | Friction | 9 - 15 | 24 - 70 | 200-230 |
| 9 | ¢440(445) | 4 | 5 | 6 | Friction | 9 - 15 | 24 – 85 | 220-260 |
| 10 | ¢470 | 4 | 5 | 6 | Friction | 9 - 18 | 24 – 102 | 220-260 |
| 11 | ¢508 | 4 | 5 | 6 | Friction | 9 - 18 | 24 – 102 | 260-360 |
| 12 | ¢530 | 4 | 5 | 6 | Friction | 9 - 20 | 32 – 114 | 320-400 |
| 13 | ¢580(575) | 4 | 5 | 6 | Friction | 9 - 24 | 32 – 138 | 360-420 |
| 14 | ¢630 | 4 | 5 | 6 | Friction | 9 - 26 | 32 - 150 | 400-500 |
