TELEMETRIC SYSTEM FOR TRANSMITTING AND RECEIVING INFORMATION IN PROCESS OF DRILLING Russian patent published in 1998 - IPC

FIELD: this relates to geophysical investigation. SUBSTANCE: according to design, controlling signal in multiplexer of bottom-hole part is formed from combination of direct and alternating voltages which are formed in feed shaper and controlling signals of ground surface part according to signal from processor and are transmitted through two communication lines. Processor operates according to program preset by programming unit, and information signal goes to processor through third communication line after being converted to digital form. For calculation of information signal in processor, sent from unit of analogue setters are permanent coefficients and preset values, and calculated information signal is transmitted to indicator. EFFECT: high efficiency. 3 dwg