SYSTEM OF DRILLING OF INCLINED AND HORIZONTAL BOREHOLES Russian patent published in 2001 - IPC

FIELD: drilling of inclined and horizontal boreholes, particularly, systems of transmission of information of running coordinates of drilling for control of drilling process. SUBSTANCE: introduced into drilling system with use of magnetoelectric cableless communication channel are additional electronic unites ensuring transmission, both, from bottom-hole telemetering system to ground surface information processing apparatuses, and from the latter to bottom-hole telemetering system. This makes it possible, for instance, from ground surface, to switch to standby condition to provide for economical use of self-containing power supply battery. EFFECT: higher reliability of drilling due to reduced power consumption from power supply batter and possible information transmission from top down. 1 dwg