Therefore, it's important to make research on the force and deformation of tubing string.
因此，研究水平井测试管柱的受力及变形具有重要意义。
It has a practical meaning for the strength design and combination usage of drill string, casing and tubing under different technological conditions.
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。
Installing an electrical conductor or hydraulic conduit further enhances the capability of a coiled tubing string and enables relatively complex intervention techniques to be applied safely.
安装一个电导体或水力导管将进一步地提高挠性管柱的性能，并使相对复杂的采油井下工艺措施技术能安全地被使用。
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