International Journal of Oil, Gas and Coal Engineering
Volume 6, Issue 4, July 2018, Pages: 50-59
Received: Jun. 13, 2018;
Accepted: Jul. 5, 2018;
Published: Jul. 30, 2018
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Hongyan Ma, Directional Drilling Branch, Bohai Drilling Engineering Company, Tianjin, China
Jingwang Chen, Directional Drilling Branch, Bohai Drilling Engineering Company, Tianjin, China
Daning Wang, Directional Drilling Branch, Bohai Drilling Engineering Company, Tianjin, China
Shibo Su, Directional Drilling Branch, Bohai Drilling Engineering Company, Tianjin, China
Xianjing Yang, Directional Drilling Branch, Bohai Drilling Engineering Company, Tianjin, China
Xiangzhen Cheng, Huabei Oilfield Company, Renqiu, China
Xiangjun Qu, Directional Drilling Branch, Bohai Drilling Engineering Company, Tianjin, China
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 the high 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 themotioncharacteristicsof 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 experiments are 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.
Simulation and Experimentation of Torkbuster Based on ANSYS/LS-DYNA, International Journal of Oil, Gas and Coal Engineering.
Vol. 6, No. 4,
2018, pp. 50-59.
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