Torsional stick–slip vibrations easily occur when the drill bit encounters a hard or a hard-soft staggered formation during drilling process. Moreover, serious stick–slip vibrations of the drill string is the main factor leading to low drilling efficiency or even causing the downhole tools failure. Therefore, establishing the stick–slip theoretical model, which is more consistent with the actual field conditions, is the key point for new drilling technology. Based on this, a new torsional vibration tool is proposed in this paper, then the multidegree-of-freedom torsional vibrations model and nonlinear dynamic model of the drill string are established. Combined with the actual working conditions in the drilling process, the stick–slip reduction mechanism of the drill string is studied. The research results show that the higher rotational speed of the top drive, smaller viscous damping of the drill bit, and smaller WOB (weight on bit) will prevent the stick–slip vibration to happen. Moreover, the new torsional vibration tool has excellent stick–slip reduction effect. The research results and the model established in this paper can provide important references for reducing the stick–slip vibrations of the drill string and improving the rock-breaking efficiency.
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August 2019
Research-Article
Torsional Vibrations and Nonlinear Dynamic Characteristics of Drill Strings and Stick-Slip Reduction Mechanism
Jialin Tian,
Jialin Tian
Key Laboratory of Oil and Gas Equipment
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
e-mail: tianjialin001@gmail.com
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
e-mail: tianjialin001@gmail.com
1Corresponding authors.
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Genyin Li,
Genyin Li
Key Laboratory of Oil and Gas Equipment
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
e-mail: 875669285@qq.com
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
e-mail: 875669285@qq.com
1Corresponding authors.
Search for other works by this author on:
Liming Dai,
Liming Dai
Industrial Systems Engineering,
University of Regina,
Regina, SK S4S 0A2, Canada
University of Regina,
Regina, SK S4S 0A2, Canada
Search for other works by this author on:
Lin Yang,
Lin Yang
Key Laboratory of Oil and Gas Equipment
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
Search for other works by this author on:
Hongzhi He,
Hongzhi He
Key Laboratory of Oil and Gas Equipment
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
Search for other works by this author on:
Shuhui Hu
Shuhui Hu
Key Laboratory of Oil and Gas Equipment
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
Search for other works by this author on:
Jialin Tian
Key Laboratory of Oil and Gas Equipment
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
e-mail: tianjialin001@gmail.com
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
e-mail: tianjialin001@gmail.com
Genyin Li
Key Laboratory of Oil and Gas Equipment
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
e-mail: 875669285@qq.com
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
e-mail: 875669285@qq.com
Liming Dai
Industrial Systems Engineering,
University of Regina,
Regina, SK S4S 0A2, Canada
University of Regina,
Regina, SK S4S 0A2, Canada
Lin Yang
Key Laboratory of Oil and Gas Equipment
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
Hongzhi He
Key Laboratory of Oil and Gas Equipment
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
Shuhui Hu
Key Laboratory of Oil and Gas Equipment
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
Ministry of Education,
School of Mechanical Engineering,
Southwest Petroleum University,
Chengdu 610500, China
1Corresponding authors.
Contributed by the Design Engineering Division of ASME for publication in the JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS. Manuscript received January 22, 2019; final manuscript received April 16, 2019; published online May 13, 2019. Assoc. Editor: Firdaus Udwadia.
J. Comput. Nonlinear Dynam. Aug 2019, 14(8): 081007 (11 pages)
Published Online: May 13, 2019
Article history
Received:
January 22, 2019
Revised:
April 16, 2019
Citation
Tian, J., Li, G., Dai, L., Yang, L., He, H., and Hu, S. (May 13, 2019). "Torsional Vibrations and Nonlinear Dynamic Characteristics of Drill Strings and Stick-Slip Reduction Mechanism." ASME. J. Comput. Nonlinear Dynam. August 2019; 14(8): 081007. https://doi.org/10.1115/1.4043564
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