Rotary piston well tool

Details Rotary piston well tool Rotary piston well tool

E - Fixed Constructions

21

B

E21B 23/00 (2006.01) E21B 17/20 (2006.01) G02B 6/44 (2006.01)

Patent

CA 2131859

A well tool having an elongate circular body with an enclosed fluid bore extending longitudinally therethrough. A fixed plate extends radially between the bore and the body and a rotatable piston extends between the enclosed bore and the body and is rotatable about the enclosed bore. A hydraulic control line extends longitudinally to a position between the plate and the piston for rotating the piston. The tool may be an orientation tool and include a rotatable mandrel actuated by the piston. A recocking spring is provided recocking the piston and valve means are provided in the hydraulic line for admitting and venting fluid from the piston.

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