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Keywords: rotation
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Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Energy Resour. Technol. September 2001, 123(3): 181–186.
Published Online: April 10, 2001
...A. The´ron; E. de Langre, Mem. ASME; C. Putot 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...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Energy Resour. Technol. June 2000, 122(2): 78–82.
Published Online: March 31, 2000
...A. Baumgart A mathematical model for the drilling process is derived and solved numerically as an initial value problem. The equations of motion are nonlinear differential equations for longitudinal, lateral, and rotational motion of the pipe as well as for the rate of flow and pressure of the mud...