Mechanical Sciences
Mechanical Sciences
Mechanical Sciences
Articles | Volume 10, issue 2
Articles | Volume 10, issue 2
https://doi.org/10.5194/ms-10-363-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ms-10-363-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 10, issue 2
Research article
 | 
17 Jul 2019
Research article |  | 17 Jul 2019

Analysis on the lateral vibration of drill string by mass effect of drilling fluid

Chunxu Yang, Ruihe Wang, Laiju Han, and Qilong Xue

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Short summary
Our investigations concern the dynamics of drillstring, experiment apparatus for simulating drillstring vibration was established. Hammering method is used to measure drillstring lateral natural vibration frequency when the internal and external drilling fluid is considered. The test results show that the drilling fluid can decrease the natural frequency of the drillstring. Additional mass coefficient can get the result with high precision, which can meet the needs of the project.
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