Steerable drilling system
AssigneeSchlumberger Technology Corporation
InventorGeoff Downton
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Abstract
A steerable system comprises a fluid powered motor 10 having a rotor 16 and a stator 18, and a bias arrangement having a plurality of bias pads 34 connected to the stator 18 so as to be rotatable therewith, the bias pads 34 being moveable to allow the application of a side load to the steerable system.
Claims10
A steerable drilling system comprising a fluid powered motor having a rotor and a stator within a housing, the stator being mounted on a drillstring so as to be rotatable therewith, and a bias arrangement having plurality of bias pads connected to the stator so as to be rotatable therewith, the bias pads being moveable by a pressure differential between drilling fluid upstream of the fluid powered motor and drilling fluid in an annulus outside of the housing and downstream of the fluid powered motor to allow the application of a side load to the steerable system.
Dependencies are inferred from the claim text.