Research progress of drill string dynamics of horizontal well

Drill string dynamics is an important basic theory in horizontal well drilling engineering.Analysis of drill string dynamics gives a better understanding of movement of the string in horizontal well for scientific forecast and control of well trajectory and reveals the mechanism of drill string failure.Analysis of the current situation in the study of drill string dynamics in horizontal well at home and abroad indicates that the theoretical study has fallen behind practical engineering application and the study stresses on some certain aspect of drill string dynamics.This paper pointes out the research direction of horizontal well drill string dynamics and proposes to conduct the research by using a dynamics model for the whole drill string system.