Review Article
A Review of the Evaluation, Control, and Application Technologies for Drill String Vibrations and Shocks in Oil and Gas Well
Table 3
Lateral vibration level classification.
| | Levels | Axial acceleration
RMS (g) | Lateral acceleration
RMS (g) | Limit time |
| | Low | <1 | <1 | No | | Medium | 1~2 | 1~3 | 24 hours, suggest reducing vibration | | High | 2~4 | 3~6 | 12 hours, must reduce vibration | | Severe | >4 | >6 | 30 minutes, immediately reduce vibration |
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