Research Article
Experimental Investigation and Analysis of Dynamic Buckling of Drill String in Horizontal Well
Table 5
Experimental results of critical buckling load of the drill string.
| | Rotational speed/(r/min) | Sinusoidal critical buckling load/(kgf) | Spiral critical buckling load/(kgf) |
| | 0 | 7.0 | 16.0 | | 50 | 7.0 | 14.0 | | 100 | 7.0 | 14.0 | | 150 | 6.8 | 14.0 | | 200 | 6.8 | 13.0 | | 250 | 6.8 | 13.0 | | 300 | 6.8 | 12.0 |
|
|
