Effect of Axial Vibration on Sliding Frictional Force between Shale and 45 Steel
Joint Authors
Chen, Ping
Ma, Tianshou
Wu, Hao
Yang, Liu
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-01-24
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Activating drill string vibration is an effective means to mitigate the excessive drag encountered during drilling complex-structure wells.
However, the Coulomb model cannot describe the sliding friction behavior between drill string and borehole rock with imposed axial vibrations.
To solve this problem, a specially designed experimental setup was utilized to investigate the characteristics of axial vibrating-sliding coupling friction.
The results indicate that when vibration velocity is greater than sliding velocity, axial vibration can significantly reduce friction force between contact surfaces.
Its friction reduction mechanism embodies not only the changes of instantaneous friction force, but also friction coefficient.
Meanwhile, a friction coupling model was established based on the Hertz contact theory and Dahl model.
The corresponding computational program was developed in Matlab/Simulink environment.
The calculation results are in good agreement with the experimental results, verifying the validity of the present method.
Furthermore, to overcome the shortcoming of Dahl model, a dynamic friction coefficient model was proposed to evaluate the friction-reducing effect of axial vibration using dimensional analysis method.
The model parameters under different lubrication conditions were retrieved through inverse calculation with experimental data.
This method provides a new solution for evaluating the friction-reducing effect of hydraulic oscillator and optimizing its placement.
American Psychological Association (APA)
Wu, Hao& Chen, Ping& Yang, Liu& Ma, Tianshou. 2018. Effect of Axial Vibration on Sliding Frictional Force between Shale and 45 Steel. Shock and Vibration،Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1215238
Modern Language Association (MLA)
Wu, Hao…[et al.]. Effect of Axial Vibration on Sliding Frictional Force between Shale and 45 Steel. Shock and Vibration No. 2018 (2018), pp.1-13.
https://search.emarefa.net/detail/BIM-1215238
American Medical Association (AMA)
Wu, Hao& Chen, Ping& Yang, Liu& Ma, Tianshou. Effect of Axial Vibration on Sliding Frictional Force between Shale and 45 Steel. Shock and Vibration. 2018. Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1215238
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1215238