Tri-stable actuator apparatus and method

Details Tri-stable actuator apparatus and method Tri-stable actuator apparatus and method

F - Mech Eng,Light,Heat,Weapons

15

C

F15C 3/00 (2006.01) E21B 7/06 (2006.01) F15C 4/00 (2006.01)

Patent

CA 2587834

An actuator to direct a downhole drilling tool includes a stator and an armature configured to be electromagnetically displaced into one of three stable positions. A cavity within the stator is in communication with a high-pressure fluid and hydraulic ports in the stator allow the high-pressure fluid to communicate with low- pressure regions. Plungers on the armature selectively block either or none of the hydraulic ports, allowing for three control options from the actuator to the downhole drilling tool.

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