Quasistatic critical states of strings for deep drilling |
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Authors: | V I Gulyaev V V Gaidaichuk I L Solov’ev I V Gorbunovich |
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Affiliation: | (1) National Transport University, Kiev, Ukraine;(2) Kiev National Technical University of Building and Architecture, Kiev, Ukraine |
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Abstract: | We pose the problem of buckling of an elongated twisted rotating rod subjected to tension-compression and containing an internal
flow of homogeneous fluid. We derive the resolving equations capable of modeling the stability of strings for deep drilling,
propose a procedure for their solution, and consider typical examples. The critical values of the parameters of the system
specifying its elastic equilibrium are determined and the stability loss modes of are established.
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Translated from Problemy Prochnosti, No. 5, pp. 109–119, September–October, 2006. |
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Keywords: | drill string torsion rotation loss of stability critical parameters modes of buckling |
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