Dual top drive systems and methods

Abstract

Systems and methods for wellbore operations using a dual top drive system with two top drives; the top drives positioned with one above the other; the two top drives in certain aspects movable separately or in unison; in one aspect the top drives operational to counter each other's reactive torque; and in other aspects the wellbore operation being one of drilling, casing, casing while drilling, casing drilling, reaming, underreaming, joint make-up, joint breakout, milling, managed pressure drilling, underbalanced drilling, tubular running, tubular running with continuous circulation, controlling bit face orientation during operations with a bit, conducting well operations based on mechanical specific energy considerations, and automatic drilling.

Dependencies are inferred from the claim text.