Steerable rotary drilling devices incorporating a tilted drive shaft

A method, comprising:

• introducing a directional drilling sub into a wellbore penetrating a subterranean formation, wherein the directional drilling sub comprises:
• a housing,
• a coupling mechanism arranged within the housing, and
• a tilt drive shaft extending longitudinally within the housing and having a first end operatively coupled to a downhole end of the coupling mechanism, wherein an uphole end of the coupling mechanism is coupled to a drive shaft, wherein the drive shaft is coupled to a drill string;
• drilling into the subterranean formation with a drill bit operatively coupled to a second end of the tilt drive shaft;
• supporting the tilt drive shaft within the housing at or near the first end with an upper eccentric assembly that includes an upper inner eccentric ring nested within an upper outer eccentric ring and being rotatable with respect to each other;
• supporting the tilt drive shaft within the housing at or near the second end with a lower eccentric assembly that includes a lower inner eccentric ring nested within a lower outer eccentric ring and being rotatable with respect to each other;
• and
• tilting the tilt drive shaft within the housing by rotating at least one of the upper and lower inner or outer eccentric rings and thereby altering an azimuthal tool face orientation of the drill bit.