Sentences with traveling block
traveling block
T t - The traveling block may contain from three to six sheaves depending upon the loads to be handled and the mechanical advantage necessary.The traveling block supports the drill column and travels up and down as it hoists the pipe out of the hole and lowers it in.A traveling block is a set of sheaves which forms part of a system in the derrick for lowering and lifting heavy things into or out of the wellbore.