thiagoritto / drillstring_testrig2018

README

In this repository you will find data from a test rig experiment performed at the Laboratory of Acoustic and Vibration of the Federal University of Rio de Janeiro.

The matlab code Main_experiment_Ritto.m loads data from 175_completo.mat and plots the time signal for (i) the angular speed, (ii) the torque-on-bit. and (iii) the weight-on-bit. It also shows the hysteresis loop for (a) torque-on-bit vs. angular speed and (b) weight-on-bit vs. angular speed.

Note: we were not able to measure the axial speed of the bit, hence depth of cut is unknown.

References: F.F. Real, D.M. Lobo, T.G. Ritto, F.A.N.C. Pinto. Experimental analysis of stick-slip in drilling dynamics in a laboratory test-rig. Journal of Petroleum Science and Engineering 170 (2018) 755–762. DOI: https://doi.org/10.1016/j.petrol.2018.07.008

D.M. Lobo, T.G. Ritto, D.A. Castello, M.L.M. de Souza. On the calibration of drill-string models based on hysteresis cycles data. International Journal of Mechanical Sciences 177 (2020) 105578. DOI: https://doi.org/10.1016/j.ijmecsci.2020.105578