Patent ID: 7621343

Claim:
A method, comprising: drilling a deviated borehole using a bottom hole assembly while rotating a drill string from the surface, the bottom hole assembly having a rotary shaft of a rotary steerable device rotatable within a rigid housing extending from an upper shaft bearing positioned within the rigid housing to an intersection of a central axis of the rigid housing and a central axis of a lower deflected portion of the rotary shaft, the lower portion of the rotary shaft being deflected in response to a deflection device; coupling an anti-rotation device to the rigid housing of the rotary steerable device; the deflection device deflecting the rotary shaft by a transverse force acting between the rotary shaft and the rigid housing; using a bit coupled to the rotary shaft to drill the deviated borehole, the bit having a bit face, the bit face having a bit full cutting diameter; and using a gauge section above the bit face, such that an axial length between the bit full cutting diameter and a top of the gauge section is at least 75% of the bit full cutting diameter.