A three-dimensional nonlinear finite element model for coupled vibration analysis of rotary steerable systems
Kun Shao, Yue Liu, Huihui Wang, Lizhi Xiao, Zhengzhi Zhou, Zhanjun Jia, Qichen Sun · 2026
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Description
Kun Shao and six co-authors built a computer model of the vibrations that plague rotary steerable drilling systems, the tools that aim a drill bit deep underground. Shaking in the bottom-hole assembly can break tools, wear parts out, and spoil steering. The team created a three-dimensional, nonlinear finite element model that treats bending, twisting, and lengthwise vibrations together rather than separately.
The model reproduces seven vibration patterns seen in real drilling, from single-mode shaking to fully tangled coupling. It clearly separates stick-slip, a twisting grab-and-release motion, from whirl, a sideways spinning driven by twist-bend coupling. Whirl proved most sensitive to rotation speed and drill collar shape, while stick-slip follows torsional excitation. Field cases checked the model's predictions. The authors offer it as a physics-based guide for spotting and damping each vibration type.
Catalog record
| CREATOR | Kun Shao, Yue Liu, Huihui Wang, Lizhi Xiao, Zhengzhi Zhou, Zhanjun Jia, Qichen Sun |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 112 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |