WELL BORE POSITION MEASURING APPARATUS OF MEASURING COMPLEX Russian patent published in 1996 - IPC

FIELD: well investigations. SUBSTANCE: well bore position measuring apparatus of measuring complex has body in form of thick-wall tube, internal heat- retaining container, heat insulation layer between them, shock absorber, sealed connector for multicore cable, internal and external ambient temperature sensitive elements and hermetically sealed reed relay transducer. Controlled heat-conducting contact is installed between body of measuring apparatus and end face of internal container. Internal container accommodates module of gyroscopic sensitive elements immovable relative to body and forming two-component angular velocity transducer and inclination transducer, and electronic module. Electronic module has apparatus power supply source, analog circuits of sensitive elements, device for conversion and input of data, master oscillator, timer with frequency dividers, microprocessor system with discrete signal shaper and transceiver. Microprocessor system controls frequency divider connected to cadence input of power supply unit of gyromotors for control of their angular momentum. Electronic switch disconnects power supply of circuits of microprocessor system for the time of intervals in the work. EFFECT: simplified design of apparatus and higher accuracy in measurement of well bore position and bottom hole coordinates without calibration and initial setting. 4 cl, 2 dwg