FIELD: bore-hole drilling technology. SUBSTANCE: this relates to control facilities used in drilling and geophysical investigation of bore-holes. Telemetric system has three interperpendicular accelerometers and three interperpendicular ferroprobes which are located along axis of bore-hole. Each accelerometer measures projection of gravitational force (or projection of free fall acceleration) to corresponding axis, and each ferroprobes measures projection of strength of Earth magnetic field to own axis. Units of device are interlinked so that realized is algorithm of calculation of zenith angle of bore-hole, azimuth, whipstock setting angle, and whipstock azimuth. EFFECT: higher efficiency. 2 dwg
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