DOWNHOLE TOOL USING A LOCKING CLUTCH
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United States of America Patent
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Issued Date -
Dec 31, 2015
app pub date -
Jun 16, 2015
filing date -
Jun 25, 2014
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A downhole tool may be operated using a locking clutch. The downhole tool may include an upper downhole motor having a rotor. The downhole tool may also include a lower downhole motor having a shaft. Both the rotor and shaft may rotate relative to the housing. The locking clutch may be coupled to the rotor and the shaft, and may transmit a torque from the rotor to the shaft. The locking clutch may include at least one locking pawl configured to move from an engaged position to a disengaged position when the shaft rotates above a disengagement speed. In the engaged position, the upper downhole motor may provide a torque boost to limit sticking or stall of a drill bit coupled to the downhole tool.
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