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

    Reference
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    [2] 姜光忍, 李忠, 王献斌. 复杂钻探条件下的绳索取心钻杆螺纹[J]. 地质装备, 2009,10(5):17-19.
    [3] Macdonald K A, Deans W F. Stress analysis of drillstring threaded connections using the finite element method[J]. Engineering Failure Analysis, 1995,2(1):1-30.
    [4] Lin Y, Zhu D, Zeng D, et al. Numerical and experimental distribution of stress fields for double shoulder tool joint[J]. Engineering Failure Analysis, 2011,18(6):1584-1594.
    [5] 苏继军, 殷琨, 郭同彤. 提高钻杆接头螺纹强度的有效方法研究[J]. 探矿工程(岩土钻掘工程), 2005,32(8):40-42.
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    [7] Shahani A R, Sharifi S M H. Contact stress analysis and calculation of stress concentration factors at the tool joint of a drill pipe[J]. Materials Design, 2009,30(9):3615-3621.
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History
  • Received:July 11,2014
  • Revised:August 08,2014
  • Adopted:August 10,2014
  • Online: November 13,2014
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