Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4976647 | Mechanical Systems and Signal Processing | 2018 | 12 Pages |
Abstract
In this work we investigate forward and backward whirls of a drill-string using a novel experimental drilling rig (Wiercigroch, 2010) capable of reproducing major types of drill-string vibration, including stick-slip, bit-bounce and whirling. We focus our attention on whirling motion of the Bottom Hole Assembly (BHA) with a particular attention to the co-existence of forward and backward whirls. We present experimental results, showing for the first time co-existing whirling solutions and characterizing the parameter space in which different whirls can be observed. Those results are then used to calibrate a simple mathematical model, which can be used for further studies of whirling phenomena.
Related Topics
Physical Sciences and Engineering
Computer Science
Signal Processing
Authors
Marcin Kapitaniak, Vahid Vaziri, Joseph Páez Chávez, Marian Wiercigroch,