Drawworks hoisting drum

Normally, a hoisting system has an even number of working lines between the traveling block and the crown block. The fast line is spooled onto the drawworks hoisting drum. The dead line is anchored to the rig floor across from the drawworks. The weight indicator is a load cell incorporated in the dead line anchor. 

The drawworks basically contains the hoist drum, the transmissions, the brake systems, the clutch systems, rotary drive sprocket, and cathead. Figure 4-10 shows a schematic of the drawworks. 

In Figure 4-11, the driller s console is at the left of the drawworks. Also, the hoisting drum and sand reel can be seen. The driller s brake control is between the driller s console and the drawworks to control the brake systems of the hoisting drum. 

Drawworks A drum in a steel frame used on the floor of a drilling rig to raise and lower equipment in a well. It is driven by the prime movers. Hoisting line is wound around the reel. 

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