Open AccessRESEARCH OF AXIAL FORCE AND THE TORQUE ACTION ON A DRILL STRING AT ROTARY AND COMBINED DRILLING METHODS
Author(s) -
Ya. S. Hrydzhuk
Publication year - 2018
Publication title -
naukovij vìsnik ìvano-frankìvsʹkogo nacìonalʹnogo tehnìčnogo unìversitetu nafti ì gazu
Language(s) - English
Resource type - Journals
eISSN - 2415-3524
pISSN - 1993-9965
DOI - 10.31471/1993-9965-2019-2(45)-7-15
Subject(s) - drill string , torque , drilling , drill , string (physics) , work (physics) , action (physics) , computer science , mechanical engineering , structural engineering , engineering , physics , theoretical physics , quantum mechanics , thermodynamics
The estimation approach of the work performed by the main force factors acting on the drill string, rotary and combined drilling methods, was proposed. The problem of obtaining analytical functions of force factors action for a mechanical system with distributed parameters was formulated.
To solve the problem, the axial load and torque functions of the drill string analysis was performed, depending on the alternating parameter - the well depth. By integrating these functions, analytical dependencies were established for determining the axial load and torque acting on the drill string in sections of directional and S-shaped wells. Relying on industrial data, numerical calculations of the size of work on sections of such wells were carried out. The obtained research results can be further used to find energy-saving modes of the drill string.