Drill rig top drive

The top drive is one of the components of the drilling rig that is used to rotate the drill string during drilling, having 1000 horsepower, which rotates the shaft to which the drill string is attached. It decreases th. [pdf]

Top drive for drilling rig

A top drive is a mechanical device on a that provides clockwise torque to the to drill a . It is an alternative to the and . It is located at the place below the traveling block and moves vertically up and down the derrick. [pdf]

What is a top drive on a drilling rig

The top drive is one of the components of the drilling rig that is used to rotate the drill string during drilling, having 1000 horsepower, which rotates the shaft to which the drill string is attached. It decreases t. [pdf]