Patent ID: 6505531
Filing Date: 2003-01-14
Classification: E21B

Abstract:
A wrench for make up and break out of a connection between a drill bit or stabilizer having a non-circular cross section and a drill pipe joint disposed along an upright axis, comprising:an upper assembly comprising a pipe gripper operable along an angle transverse to the upright axis for holding the drill pipe joint against rotation about the upright axis with respect to the upper assembly; a lower assembly depending from the upper assembly and comprising a drill bit or stabilizer receiving member having a non-circular opening matching the cross section of the drill bit or stabilizer for securing the drill bit or stabilizer against rotation about the upright axis with respect to the lower assembly, wherein the lower assembly is rotatably secured with respect to the upper assembly to allow rotation of the upper and lower assemblies with respect to each other about the upright axis; a torque applicator secured to the upper and lower assemblies for rotating the upper and lower assemblies with respect to each other; a lateral gate opening formed in the upper assembly for receiving the drill pipe joint in the pipe gripper.