Releasable locking mechanism for locking a housing to a drilling shaft of a rotary drilling system
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United States of America Patent
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Oct 24, 2017
Issued Date -
N/A
app pub date -
Sep 18, 2014
filing date -
Sep 18, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Downhole rotary steerable drill including a drilling shaft rotatably supported within a housing, the drilling shaft and housing each having a longitudinal axis. The drill can include a releasable locking mechanism for rotationally locking and releasing the drilling shaft relative to the housing, the releasable locking mechanism transitionable between locked and released configurations. The releasable locking mechanism includes a sliding plunger coupled to the housing by a coupling that permits longitudinal reciprocation of the sliding plunger relative to the housing and prevents rotation of the sliding plunger relative to the housing. The releasable locking mechanism can also include pressure-responsive piston that reciprocates between an unactuated configuration and actuated configuration in response to applied pressure from a pressuring pump.
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