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Stability of the equilibrium of rotating drillstrings |
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| Authors: | V. I. Gulyaev P. Z. Lugovoi M. A. Belova I. L. Solov’ev |
| Affiliation: | (1) National University of Transport, Kiev, Ukraine;(2) S. P. Timoshenko Institute of Mechanics, National Academy of Sciences of Ukraine, Kiev |
| Abstract: | The quasistatic stability of a rotating drillstring under longitudinal force and torque is analyzed. Constitutive equations are derived, and a technique to solve them is proposed. It is shown that the buckling mode of the drillstring is helical within a section subjected to compressive forces __________ Translated from Prikladnaya Mekhanika, Vol. 42, No. 6, pp. 101–109, June 2006. |
| Keywords: | drillstring rotation longitudinal force torque constitutive equations helical shape compressed section of drillstring |
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