FIELD: well drilling, possible use during transfer of measured face information during drilling through hydraulic communication channel.
SUBSTANCE: device contains cylindrical body with electronic unit for geophysical research, power source unit, power controller and executing mechanism mounted in it, executing mechanism includes spring-loaded locking valve, connecting tubular space of drilling pipes to annular space, upper spring-loaded and lower pilot valves with electromagnet, positioned in hollows filled with liquid. Hollow of lower pilot valve is connected by hydraulic channel to annular space. Hollows of locking valve and upper spring-loaded pilot valve, and hollows of lower pilot valve and hydraulic valve are connected by reverse valves.
EFFECT: increased durability of device.
1 dwg
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