FIELD: well drilling. SUBSTANCE: determined prior to well drilling is coefficient of effect of drilling bit type on crooking of wellbore by multiplication of rock anisotropy indices obtained in drilling of wellbore by drag bit up to appearance of its crooking and subsequent drilling with bit having minimal tooth up to appearance of wellbore crooking. Then, interval deepening of vertical and crooking wells is effected with constant bit load and deviation of wellbore and instantaneous increment of zenith angle value is determined in compliance with relation given in invention description. On course of drilling, diameter of centralizer is measured and centralezers are replaced as they wear out. EFFECT: higher efficiency.
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