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Keywords: drill strings
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. December 2007, 129(4): 281–288.
Published Online: May 7, 2007
...M. A. Elsayed Drill strings are used in oil and gas production as well as geothermal wells. They experience destructive vibrations, many of which are highly dependent on drill string modes. In this paper, we show that the lowest frequency modes are not necessarily the most critical and we delineate...