Drillstring vibration is detrimental to drilling operations. It is crucial to understand the underlying mechanisms to circumvent these vibrations and to help improve drilling performance. This paper presents a six degrees-of-freedom (DOF) finite element method (FEM) model to characterize the drillstring dynamics. In addition, a comprehensive bit-force model is developed and included as a boundary condition to the model, corresponding to the vibrations in axial, lateral, and torsional directions. This bit-force model considers the bottom hole assembly (BHA) eccentricity, mud damping, bit–rock interaction, and their coupling mechanisms. Simulation results have shown good agreement with field observations and experimental data in the literature. The utility of this modeling framework is demonstrated in the paper through case studies for normal operation, stick–slip vibration, and whirl vibration.
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September 2017
Research-Article
A Finite Element Method With Full Bit-Force Modeling to Analyze Drillstring Vibration
Tianheng Feng,
Tianheng Feng
Department of Mechanical Engineering,
University of Texas at Austin,
204 E. Dean Keeton Street,
Austin, TX 78712
e-mail: f.tianheng@utexas.edu
University of Texas at Austin,
204 E. Dean Keeton Street,
Austin, TX 78712
e-mail: f.tianheng@utexas.edu
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Zheren Ma,
Zheren Ma
Department of Mechanical Engineering,
University of Texas at Austin,
204 E. Dean Keeton Street,
Austin, TX 78712
e-mail: zhrm@utexas.edu
University of Texas at Austin,
204 E. Dean Keeton Street,
Austin, TX 78712
e-mail: zhrm@utexas.edu
Search for other works by this author on:
Dongmei Chen,
Dongmei Chen
Department of Mechanical Engineering,
University of Texas at Austin,
204 E. Dean Keeton Street,
Austin, TX 78712
e-mail: dmchen@me.utexas.edu
University of Texas at Austin,
204 E. Dean Keeton Street,
Austin, TX 78712
e-mail: dmchen@me.utexas.edu
Search for other works by this author on:
Jason Dykstra
Jason Dykstra
Search for other works by this author on:
Tianheng Feng
Department of Mechanical Engineering,
University of Texas at Austin,
204 E. Dean Keeton Street,
Austin, TX 78712
e-mail: f.tianheng@utexas.edu
University of Texas at Austin,
204 E. Dean Keeton Street,
Austin, TX 78712
e-mail: f.tianheng@utexas.edu
Madhu Vadali
Zheren Ma
Department of Mechanical Engineering,
University of Texas at Austin,
204 E. Dean Keeton Street,
Austin, TX 78712
e-mail: zhrm@utexas.edu
University of Texas at Austin,
204 E. Dean Keeton Street,
Austin, TX 78712
e-mail: zhrm@utexas.edu
Dongmei Chen
Department of Mechanical Engineering,
University of Texas at Austin,
204 E. Dean Keeton Street,
Austin, TX 78712
e-mail: dmchen@me.utexas.edu
University of Texas at Austin,
204 E. Dean Keeton Street,
Austin, TX 78712
e-mail: dmchen@me.utexas.edu
Jason Dykstra
1Corresponding author.
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received October 19, 2016; final manuscript received February 10, 2017; published online June 5, 2017. Assoc. Editor: Dumitru I. Caruntu.
J. Dyn. Sys., Meas., Control. Sep 2017, 139(9): 091016 (10 pages)
Published Online: June 5, 2017
Article history
Received:
October 19, 2016
Revised:
February 10, 2017
Citation
Feng, T., Vadali, M., Ma, Z., Chen, D., and Dykstra, J. (June 5, 2017). "A Finite Element Method With Full Bit-Force Modeling to Analyze Drillstring Vibration." ASME. J. Dyn. Sys., Meas., Control. September 2017; 139(9): 091016. https://doi.org/10.1115/1.4036083
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