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SYSTEM, METHOD AND APPARATUS FOR DOWNLINKABLE, HIGH SPEED TELEMETRY FOR MEASUREMENT WHILE DRILLING OR LOGGING WHILE DRILLING
SYSTEM, METHOD AND APPARATUS FOR DOWNLINKABLE, HIGH SPEED TELEMETRY FOR MEASUREMENT WHILE DRILLING OR LOGGING WHILE DRILLING
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机译:用于在钻探或测井时进行测井的同时可下行,高速遥测的系统,方法和装置
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摘要
A pulser for generating positive pressure mud pulses includes a signal shaft disposed to move between an up position and a down position within a ceramic shaft seal, the signal shaft connected at a top end to a drive shaft, the signal shaft sealing a poppet orifice when in the down position, wherein the drive shaft is connected to an actuator, the actuator connected to a hybrid bearing and a pulser coupling. The pulser is contained in a drill collar and configured to connect to a bottom end assembly. The pulser includes a pressure compensation membrane.
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