Research on Mechanical Property of Top Drive Casing Running Tool’s Slips

Abstract:

Top drive casing running tool, because of its convenience, speed and safety, has been widely received by the research enterprises of petroleum mechanism and instrument. Now, there have been developed several kinds of casing running tools which have gradually been used by the drilling corporation at home and abroad. The slips system’s parameters, such as the axial thrust, slips length, teeth form, teeth interval, etc., directly affect the performance and safety of casing running tools. Those have no reports about correlative theoretical investigation results. Here, we found the mechanical analysis model between slip and casing and gain the minimum primitive axis thrust of slips. Then the minimum teeth interval of the slips is deduced by contact mechanics. And then the slips available working length is worked out through the shell theory and empirical formulas. Finally, based on finite element method, we obtain tooth form angles’ recommendable range by studying the tooth form. This study supplies theoretical basis to structural design of slips system of the top drive casing running tool.

• Periodical: Applied Mechanics and Materials (Volumes 157-158)
• Pages: 1393-1398
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.157-158.1393
• Online since: February 2012
• Authors: Fa Guang Jiang, Zheng Liang, Guang Hui Zhao, Yong Hong Yan, Pan Wang
• Keywords: Casing, Contact Mechanics, Finite Element Method (FEM), Shell Theory, Slip

References

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