Patent attributes
Variably configurable anti-rotation device (252) in a rotary steerable subterranean drill (20). The rotary steerable subterranean drill (20) includes a housing (46) with which the anti-rotation device (252) is associated. Wellbore engaging portions of the anti-rotation device (252) are positioned at an exterior (52) of the housing (46) and have a plurality of differently configurable, radially deployable drag members (254) that are peripherally spaced about the exterior (52) of the housing (46). The drag member (254) has a plurality of settable operational configurations wherein, within each configuration, the drag member (254) is deployable across a borehole engaging range of motion spanning from a start position to a maximally extended, borehole engaging position. Additionally, for at least two of the plurality of settable operational configurations, the start position of the borehole engaging range of motion is different.
