DEVICE FOR WELL LOGGING IN PROCESS OF DRILLING Russian patent published in 2000 - IPC

FIELD: well logging during drilling. SUBSTANCE: device has downhole unit with transducers recording and reproducing unit and personal computer located on surface. Recording and reproducing unit may be located either together with downhole unit or at the surface and contains power supply unit, switch, mixer, memory unit, controller and interface converter. Power supply unit supplies recording and reproducing unit and downhole unit. Switch member is connected between power supply unit and mixer and provides power supply (via mixer) to downhole unit. Mixer is designed for separation of data coming from transducers of downhole unit and may be stored in memory unit. Interface converter serves for connection of recording and reproducing unit to personal computer. Controller controls operation of switch and recording of data in memory unit and transmission of data to personal computer. EFFECT: provided tying of point of data record to well depth with available communication channel and without it with the help of the same downhole unit. 2 dwg