Patent ID: 9181766
Filing Date: 2015-11-10
Classification: E21B

Abstract:
1. A breakout tool for breaking out two components of a drill string on a drill rig, the tool comprising: a breakout tong configured to grip a first one of the two components of the drill string while a second one of the two components is held stationary, the breakout tong including a first jaw and a second jaw, the second jaw being pivotally coupled to the first jaw at a first pivot point and having a small hydraulic cylinder for forcing the second jaw to pivot about the first pivot point when it is activated, wherein a geometry of the second jaw relative to the first jaw of the breakout tong is configured such that, as the first jaw grips the drill string component, applying greater torque to the breakout tong causes the second jaw to tighten the grip on the first drill string component and wherein, in use, the first drill string component can be gripped between the second jaw and the first jaw; and a main hydraulic cylinder configured to be mounted on the drill rig and being mechanically coupled to the breakout tong to apply a torque to the breakout tong, wherein the breakout tong is pivotally coupled to the main hydraulic cylinder via a first mounting clevis, the first mounting clevis being fixed to one end of the main hydraulic cylinder and having a first pivot pin provided in connection therewith, and wherein, in use, the two components of the drill string can be broken apart by the breakout tong gripping the first drill string component and applying a torque thereto.