Breaking system for a drill.

Abstract

A breakout system for a drill rig includes a first wrench, a second wrench, and an actuator to apply torque to rotate the second wrench relative to the first wrench. The first wrench includes a first clamp member for attaching a portion of a drill string. The first wrench also includes an open side and is supported on a drill mast in an orientation that allows the first clamp member to be viewed from a drill operator's cab. The second wrench is supported for movement relative to the first wrench. The second wrench includes a second clamp member for attaching another portion of the drill string, includes an open side, and is supported on the mast in an orientation that allows the second clamp member to be viewed from the operator's cab. The first and second clamp members can be configured to rotate outward relative to at least one wrench.