%0 Journal Article %T The effect of dynamical parameters on precession in rotary drilling %+ Département de Mécanique et Technologie %+ Laboratoire d'hydrodynamique (LadHyX) %+ Inst. Francais du Petrole, 92852 Rueil-Malmaison %A Théron, A. %A de Langre, Emmanuel %A Putot, C. %< avec comité de lecture %@ 0195-0738 %J Journal of Energy Resources Technology %I American Society of Mechanical Engineers %V 123 %N 3 %P 181-186 %8 2001 %D 2001 %R 10.1115/1.1383974 %Z Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] %Z Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph]Journal articles %X Precession, which is the rolling motion of the drillstring on the walls of the borehole, is investigated by considering the various possible motions of a rotating disk in a circular hole. Due to the simplicity of the model, closed-form results are derived on the stability of precession and on the evolution of impacting motions towards precession. It is found that increasing coefficients of friction and contact damping have a favoring effect on precession, while the stiffness and damping of the drillstring bending mode have an opposing effect. %G English %L hal-01025352 %U https://polytechnique.hal.science/hal-01025352 %~ CEA %~ X %~ CNRS %~ X-LADHYX %~ X-DEP %~ X-DEP-MECA