带扶正器下部钻柱组合的失效是钻柱失效的一种很重要的类型。
The failure of BHA with stabilizers is important among drilling string failures.
对处于不同工艺条件下的钻柱、套管、油管的强度设计和组合使用等均有实际意义。
It has a practical meaning for the strength design and combination usage of drill string, casing and tubing under different technological conditions.
并给出计算任意组合钻柱系统的轴向振动稳态响应的一般方法，提供不同测量条件下分析钻柱轴向振动状态的不同方法。
The calculation method of drilling string axial vibration is given. Meanwhile, the different methods of analysing drilling string axial vibration state are supplied in different surveying condition.
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