What is drawworks drilling?

What is drawworks drilling?

The drawworks is a part of the system that rotary drilling rigs use for hoisting, or lifting, the drill stem and casing out of the hole. A compounding transmission, or compound, sends power from the engines to the drawworks, the rotary table, and the mud pumps.

What is a drawworks in oil and gas?

1. n. [Drilling] The machine on the rig consisting of a large-diameter steel spool, brakes, a power source, and assorted auxiliary devices. The primary function of the drawworks is to reel out and reel in the drilling line, a large diameter wire rope, in a controlled fashion.

How many clutches work in draw?

The EDSI/Ewbank Model M-75 drawworks is equipped with air clutches, all three on a secondary common shaft to take advantage of the chain ratio, plus all chains stand automatically still, reducing wear on machine and wear on the operator’s ears.

What is the function of draw works in conventional rigs?

A drawworks is the primary hoisting machinery component of a rotary drilling rig. Its main function is to provide a means of raising and lowering the traveling block.

What is crown block in drilling?

1. n. [Drilling] The fixed set of pulleys (called sheaves) located at the top of the derrick or mast, over which the drilling line is threaded. The companion blocks to these pulleys are the traveling blocks.

What is a hoisting system?

A hoisting system is a mechanical machine operating in a vertical hoisting shaft. It is the most important and expensive piece of equipment in an underground ore handling line.

What is fastline in drilling?

The end of the drilling line that is affixed to the drum or reel of the drawworks, so called because it travels with greater velocity than any other portion of the line.

What happens if a rotor is too thin?

When a rotor is too thin, it overheats and warps, leading to an annoying vibration or pedal pulsation. When rotors were thicker, they could take the wear from the brake pads, be machined and still have enough metal left to dissipate the heat.

Why are disk brakes better than drum?

Disc brakes are better at managing and dispersing heat than drum brakes. This means that they experience less brake fade than drum brakes and offer a more consistent performance. This is because the disc is closer to the pads and expands even when the calipers are relaxed.