Experiment and simulation of Self-excited torkbuster

Volume 4, Issue 1, February 2019     |     PP. 1-18      |     PDF (1177 K)    |     Pub. Date: March 23, 2019
DOI:    365 Downloads     6793 Views  

Author(s)

Hongyan Ma, Directional Drilling branch,Bohai Drilling Engineering Company, Tianjin, China
Hao Zhang, Directional Drilling branch,Bohai Drilling Engineering Company, Tianjin, China
Yuanpeng Chen, Directional Drilling branch,Bohai Drilling Engineering Company, Tianjin, China
Mingchuan Wang, Directional Drilling branch,Bohai Drilling Engineering Company, Tianjin, China
Jie Zhang, Directional Drilling branch,Bohai Drilling Engineering Company, Tianjin, China
Fangang Kong, Directional Drilling branch,Bohai Drilling Engineering Company, Tianjin, China
Weiran Li, Directional Drilling branch,Bohai Drilling Engineering Company, Tianjin, China
Wei Shan, Directional Drilling branch,Bohai Drilling Engineering Company, Tianjin, China
Jin LI, Directional Drilling branch,Bohai Drilling Engineering Company, Tianjin, China
Zhiling Wang, Directional Drilling branch,Bohai Drilling Engineering Company, Tianjin, China

Abstract
The stick-slip vibration in deep hard formation is a technical bottleneck restricting the efficient use of PDC bit.In order to combat the stick-slip phenomenon during drilling in deep hard formations, we introduced thehigh frequency self-excited torkbuster. Based on the analysis of the working principle of the torkbuster, a nonlinear dynamic three-dimensionalmodel of PDC bit is established by using the finite element software (ANSYS/LS-DYNA). The wear conditions and themotion characteristicsof the PDC bit as well as the failure of the rock are simulated with and without the action of the high frequency torsional impact, and several field experimentsare conducted.The results show that the high frequency torsional impact force generated by the torkbuster can effectively improve the uniformity of the force on the PDC bit and rock, and restrain the stick-slip vibration and the damage of the cutters.The experimental results show that the torkbuster can improve the rock breaking efficiency and shorten the drilling cycle, and provide an important technical reference for the torsional impact technology applying in deep hard formations

Keywords
PDC Bit, Torkbuster, The Finite Element Analysis, Torsional Impact, Stick-slip Vibration

Cite this paper
Hongyan Ma, Hao Zhang, Yuanpeng Chen, Mingchuan Wang, Jie Zhang, Fangang Kong, Weiran Li, Wei Shan, Jin LI, Zhiling Wang, Experiment and simulation of Self-excited torkbuster , SCIREA Journal of Energy. Volume 4, Issue 1, February 2019 | PP. 1-18.

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