UNIVERSAL TELEMETERING SYSTEM FOR WELL DRILLING CONTROL Russian patent published in 2003 - IPC

FIELD: well drilling; applicable in control of process of directional drilling of oil and gas wells. SUBSTANCE: system has downhole measuring device with unit of transducers, multiplexer, analog-to-digital converter, transmitter, controller, downhole power source and also surface device including source of remote power supply, multimeter, signal receiver, interface unit, computer, current comparator and the first part of contactless mating unit with transformer primary winding and half of core. System also has autonomous module including unit of secondary power supply, receiver of digital data, memory, charging current modulator, command decoder, program timer, control device, rectifier and the second part of contactless transformer mating unit with transformer secondary winding and the other part of core. Surface device is connected with downhole measuring device either by means of cable communication line, or through contactless mating unit with autonomous module. EFFECT: extended functional potentialities of system due to possible use of autonomous module in absence of communication channel. 1 dwg