The research indicated that the critical compressive force of drill stem in horizontal well is closely related with the length of single drill pipe in use.
研究表明，水平井眼中钻柱所能承受的临界载荷和所使用钻杆的单根长度有密切关系。
Short drill Pipe Short drill rod is a tool for adjusting drilling tool spaced length to reach a certain technical purpose in drilling engineering.
短钻杆是钻井过程中调整钻具间隔长度以达到某种技术目地的工具。
Thread form and the length of drill pipe can be manufactured in accordance with user requirements.
钻杆螺纹形式及长度可根据用户要求制造。
Thread form and the length of drill pipe can be manufactured in accordance with user requirements.
钻杆螺纹形式及长度可根据用户要求制造。
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