Patent ID: 10287821

Abstract:
A drilling assembly disposed on a drillstring deviates a borehole (i.e., changes the trajectory of the borehole) advanced by a drill bit. A housing disposed on the drillstring transfers first rotation to the drill bit, and one or more directors are disposed on the housing to rotate therewith. Each of the directors is independently movable between an extended condition and a retracted condition relative to the housing. An actuator is disposed on the assembly and is operable provide a second rotation relative to the first rotation. An internal component is disposed in the housing and is rotatable by the second rotation of the actuator to have first and second conditions relative to each of the one or more directors rotating with the first rotation of the housing. The internal component in the first condition extends a given one of the one or more directors toward the extended condition. Conversely, the internal component in the second condition allows retraction of a given one of the one or more directors toward the retracted condition.