Optimal research on the joint thread parameters of a kind of large-diameter drill rod

Home > Archive>Volume 41, Issue 10, 2014 >67-71

Optimal research on the joint thread parameters of a kind of large-diameter drill rod
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                        Zhao XiaojunZhao Xiaojun
Engineering Center of Drilling & Excavation and Protection of Education Minister
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ZHAO Jun-xianZHAO Jun-xian
Jiangsu Hexin Petroleum Machinery Limited Corporation
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CHEN Xi-qingCHEN Xi-qing
Qinghai Investigation Institute of Hydrology and Engineering Geology and Environmental Geology
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DUAN Long-chenDUAN Long-chen
Engineering Faculty, China University of Geosciences
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Affiliation:Engineering Center of Drilling & Excavation and Protection of Education Minister,Jiangsu Hexin Petroleum Machinery Limited Corporation,Qinghai Investigation Institute of Hydrology and Engineering Geology and Environmental Geology,Engineering Faculty, China University of Geosciences
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Abstract:

The optimization study on parameters of a large diameter drill pipe joint thread used in mine shaft rising boring is conducted through combining the orthogonal experiment with the finite element theory in this paper. The study results show that small end outer diameter of the screw thread, the taper, side angle of the thread and length of the screw thread etc. have a significant impact on the strength of the thread, the significance order of these parameters on the thread strength and the optimal value of the thread without considering the interaction of these parameters are obtained.

Key words:large-diameter inverse well drill pipe; finite element analysis; orthogonal experiment; joint thread; optimization

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Received:July 11,2014
Revised:August 08,2014
Adopted:August 10,2014
Online: November 13,2014
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