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When drilling deep oil and gas wells with large deviations from the vertical stope the  resistance when moving the drill string in borehole significantly increases. A consequence of this is the difficulty of control screw steerable motor. Minimizing resistance forces is possible through usage of a J-shaped profile. The authors present the technique and results of calculation of layout, ensuring reliable integration of the trajectory of the well. This is achieved through the contact link to the bottom of the borehole wall in four locations, including a chisel, curved subs and two pillars.

THE LAYOUT OF DRILLING STRING FOR IMPLEMENTATION OF THE PROFILE BUILD-AND-HOLE WELLBORE