Length measurement methods of drill pipe
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摘要: 论述了计数法、应力波法、电驻波法以及低压脉冲反射法等钻杆长度测量方法的原理、研究及应用情况,对比了各方法的优缺点,指出电驻波法和低压脉冲反射法不受钻杆材质、直径、类型等因素影响,是钻杆长度测量的研究方向。Abstract: Principle and research and application conditions of some length measurement methods of drill pipe were discussed including counting method, stress wave method, electric wave method and low-voltage pulse reflection method. Advantages of the methods were compared as well as disadvantages. It was pointed out that the electric wave method and low-voltage pulse reflection method were not influenced by material, diameter and type of drill pipe, which were research direction of length measurement of drill pipe.
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