Abstract
Wellbore trajectory control tool is a sort of point-the-bit drilling tool to achieve the steering function while drilling. In complex conditions, the spindle bears the acting force of the bit pressure, the torque, the force of biasing mechanism and so on. So the force is very complex. Basing on the early research of our group, the further research of spindle deflecting reliability of prototype has been carried out. Based on the contact analysis between the tool spindle and the inner eccentric ring, the variation law of contact stress between the inner ring of the eccentric mechanism and the spindle is studied. Based on Palmgren-Miner and the fatigue life experiment of the spindle material, the cumulative damage calculation model of the spindle is established, and the fatigue life of spindle is solved. The result shows that the deflecting reliability of the spindle can be guaranteed.
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Acknowledgments
This work was supported by the National Science and Technology Major Project of China under Grant No. 2016ZX05038-002-LH001, the National Natural Science Foundation of China under Grant No. 51275057 and 51704034, and the Postgraduate education and teaching research project of Yangtze University No. YJY2019024.
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Hong Zhang was born in Shandong Province, P.R. China in 1982. She received her B.S. degree from China University of Petroleum, M.S. degree from Shandong University and Ph.D. degree from Yangtze University, and currently is a Vice Professor at the School of Mechanical Engineering of Yangtze University. Her research interests are in the design, development and simulation of oil and gas equipment and downhole tools and the study of pipe string mechanics.
Ding Feng was born in Anhui Province, P. R. China in 1963. He received his Ph.D. degree from China University of Petroleum(Beijing) in 2012, and currently is a Professor of Yangtze University. His research interests are in the design of oil and gas equipment and downhole tools, diagnosis and the dynamic simulation theory and technology application.
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Zhang, H., Shi, L., Liu, X. et al. Research on the spindle deflecting reliability of the wellbore trajectory control tool based on Palmgren-Miner. J Mech Sci Technol 34, 4925–4931 (2020). https://doi.org/10.1007/s12206-020-2105-0
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DOI: https://doi.org/10.1007/s12206-020-2105-0