Vasko A. Management of well trajectoryin Complex Mining and Geological Conditions on the Case of the Carpathian’sdeposits

The dissertation is devoted to the study of the influence of regime-technological and mining-geological conditions on the spatial orientation of the borehole, which is formed by different CBAs in order to improve the efficiency of well control.Analytical dependences are obtained for determining the complex index of the anisotropy of the drilling index and the influence of rock anisotropy on the curvature of the wells is shown.The scheme is developed and the method of research of the interaction of the bottom of the drill column with the face and the well of the well is given in order to determine the influence of various factors on the distortion of wells in anisotropic rocks, both with a smooth CNBC, and with the inclusion of a centralizer, stabilizer and deflector in its design.Analytical dependencies are obtained for the distance from the bit to the support-centering elements to ensure a given zenith angle and the action of the pressure force of the support-centering elements on the well wall.The scheme is developed and the justification of the method of studies of the interaction of the bottom of the drill string with the hole and the wall of the well is given to determine the influence of various factors on the curvature of the wells in anisotropic rocks, as well as with the inclusion of a centralizer and stabilizer in its design.Analytical dependencies were obtained and a calculation program was developed in MathCAD to determine the distance from the bit to the support-centering elements in order to provide a given zenith angle and the pressure force of the support-centering elements on the well wall.A rigid staircase has been developed containing a milling cutter with a drilling rig.