Parametric studies on drill-string motions
作者： Chien-Min Liao , Nicholas Vlajic , Hamad Karki , Balakumar Balachandran
DOI: 10.1016/J.IJMECSCI.2011.11.005
关键词: Parametric statistics 、 Laboratory scale 、 Rotational speed 、 Engineering 、 Borehole 、 Shell (structure) 、 Structural engineering 、 Work (physics) 、 Drill string 、 Mass imbalance
摘要: Abstract Experimental and numerical investigations are conducted into drill-string motions. The efforts carried out by using a reduced-order model with attention to stick–slip interactions between drill string an outer shell. These complemented experimental studies unique, laboratory scale model. Qualitative quantitative changes in the system behavior studied respect rotation speed mass imbalance. Comparisons made findings corresponding results. In addition, influence of contact conditions shell on dynamics is also examined. work suggest that small can have significant nature motions they provide guidelines for steering regions undesirable maintaining close center borehole.
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