Drilling Line
Drilling line is made up of steel wires and looks like wire rope. One end of the drilling line is clamped on the dead line anchor in the substructure of the rig. The drilling line passes over pulleys of travelling block and crown block and is wrapped around the drawworks drum. Its fast end is attached to the drawworks. Drilling line ranges from 7/8 to 2 inches in diameter depending on the load capacity of the rig.