System and method to control adjustable pads for use in downhole directional drilling assemblies
Abstract:
A system, drilling assembly, and method to control adjustable pads for use in downhole directional drilling. The drilling assembly comprises a bent housing comprising an upper section, a lower section, a bend between the upper and lower sections, and a bore extending from the upper to lower sections. The drilling assembly also comprises a drill bit coupled to a lower end of the bent housing and a fluid-driven motor coupled to the bent housing and comprising a drive shaft coupled to the drill bit. The drilling assembly also employs an adjustable pad extendable and retractable from an exterior of the bent housing to engage and disengage the wellbore wall to adjust a drilling direction of the drill bit, and a fluid control system operable to control extension of the pad.
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