Dynamics Analysis and Vibration Suppression of a Flexible Rotation Beam

Abstract:

This paper studies the complex transverse vibration behavior of drill string. The drill string was simplified as flexible rotation beam, and drill string of complex load was simplified for flexible rotation beam system. The nonlinear dynamic equations of flexible rotation beam is established and the complex dynamic response of flexible rotation beam in resonance case is analyzed by using method of nonlinear dynamics method. Research result show that the chaotic responses are sensitive to the revolving speed, the nonlinear oscillation of drilling string can be controlled by changing the rotating speed. This study has guiding significance to keep sidewall stability in the process of horizontal wells of sidetrack, improve the drilling rate and reduce the cost of the drilling.

• Periodical: Applied Mechanics and Materials (Volume 214)
• Pages: 165-172
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.214.165
• Online since: November 2012
• Authors: Fu Shen Ren, Su Li Chen, Zhi Gang Yao
• Keywords: Flexible Rotation Beam, Nonlinear Vibration, Transverse, Vibration Suppression

References

[1] A. D. Batako, V. I. Babitsky, N. A. Halliwell, A self-excited system for percussive- rotary drilling[C]. Journal of Sound and Vibration, 2003, 259(1): 97-118.

DOI: 10.1006/jsvi.2002.5158

[2] Eva M. Navarro-López, Domingo Cortés, Avoiding harmful oscillations in a drillstring through dynamical analysis[C]. Journal of Sound and Vibration, 2007: 307(23): 152-171.

DOI: 10.1016/j.jsv.2007.06.037

[3] Eva.M. Navarro-López, EduardoLicéaga-Castro, Non-desired transitions and sliding-mode control of a multi-DOF mechanical system with stick-slip oscillations, Chaos[C]. Solitons and Fractals, 2009, 41(4): 2035-2044.

DOI: 10.1016/j.chaos.2008.08.008

[4] Li Guoqing, Wang Hongjun, Liu Xiushan, et al. Analysis and application of drill string vibration[J]. Petroleum Drilling Techniques, 2007, 35(6): 54~56.

[5] Zhu Xiaohua, Tong hua, Liu Qingyou, et al. Research on the dynamic boundary condition between revolving drill string and borehole wall[J]. China Mechanical Engineering, (2007).

[6] Han Chunjie, Yantie. Transverse drill string vibration in horizontal holes [J]. China petroleum machinery, 2005, 33(1): 8~10.

[7] QU Zhan. Influen ce of in and out drillin g f luid on t ransverse vib rat ion of th e drilling string[ J]. China Petroleum Machinery, 1995, 23( 4): 40- 43.