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Information × Registration Number 0208U004973, 0107U004000 , R & D reports Title Theoretical investigation of strength and vibrations of tube columns for deep drilling popup.stage_title Head Valery Gulyayev, Registration Date 26-12-2008 Organization Ukranian Transport University popup.description2 The techniques are elaborated and software is created for calculation of critical states of rectilinear and curvilinear drill columns with account made for static and dynamic factors of their rotation and geometrical imperfections. The computer analysis of statics, dynamics and strength of drill columns in super-deep vertical and inclined bore-holes is performed for the stages of their functioning.5635 Product Description popup.authors popup.nrat_date 2020-04-02 Close