A comparative review of modelling and controlling torsional vibrations and experimentation using laboratory setups

The complexity of the drilling phenomenon makes it impractical to derive models having worldwide acceptability. Modeling the entire drillstring system and validating the results using the laboratory experiments or the field data have been the best practice. Most of the times, the parameters affecting the model's sensitivity are either unknown or insufficiently studied during the modeling which makes the study more challenging. The first part of the current review article summarizes the work carried out by the researcher in the field of modeling and controlling torsional vibrations. The second part highlights the experimental studies carried out in laboratories in order to reproduce modes of vibrations in the laboratory. Based on the past development, further efforts can be outlined in this field in order to improve the quality of reproduction of torsional vibrations in the laboratory. The present article reviews the information which needs to be considered while modeling a complete drilling system and developing a laboratory model to reproduce torsional vibrations.