Overview of Drawworks

The drilling drawworks is not only the lifting system equipment, but also the core component of the entire drilling rig. Drawworks is one of the three major working machines of the drilling rig. The drive methods include mechanical drive, DC drive, and AC variable frequency drive. The main brake of the drawworks adopts belt brake or hydraulic disc.

The drilling drawworks are 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. 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. Drawworks are the hoisting mechanism on a drilling, well servicing, or workover rig. It is essentially a large Drawworks that spools off or takes in the hoisting line.

Features of Drawworks

1. The Drawworks has enough power. The Drawworks can meet the maximum pulling force, the highest speed and long enough life.

2. The Drawworks drum has sufficient size and rope winding capacity.

3. The Drawworks can adapt to a wide range of load changes and has the highest power utilization.

4. The Drawworks has a sensitive and reliable brake mechanism and an auxiliary brake with sufficient capacity. The drawworks can accurately adjust the drilling pressure, evenly feed the drilling tools, control the lowering speed of the drilling tools, and the brake structure is heat-resistant and wear-resistant.

5. Brakes have rigid brackets and mounts. The Drawworks is sealed and lubricated.

6. The driller's operation of the drawworks is labor-saving and convenient.

Drilling Drawworks Components

A modern drawworks consists of five main parts: the drum, the power source, the reduction gear, the brake, and the auxiliary brake. The apparatus can be powered by AC or DC, or the drawworks may be connected directly to internal combustion engines using metal chain-like belts.

1. Drum, drum shaft assembly, which is the core part of the Drawworks

2. Braking mechanism, including mechanical brake and water brake (electromagnetic brake).

3. The cat head and cat head shaft assembly are used to tighten and unscrew the thread and lift heavy objects. The heavy-duty drilling rig Drawworks also includes a sand fishing drum to extract the core barrel.

4. Transmission system, which introduces and distributes power and transmits motion. For the internal variable speed Drawworks, in addition to the transmission shaft, drum shaft, and cat head shaft, it also includes chains, gears, shafting parts, and the middle transmission shaft of the turntable;

5. The control system, including jaws, gears, pneumatic clutches, driller consoles, control valves, etc., is part of the drilling rig control system.

6. Lubrication system, including butter lubrication, drip lubrication and sealed transmission, splash or forced lubrication.

7. Supporting system, there are welded frame brackets or closed box shell mounts.

Applications of Drawworks 

1. Trip out drilling tools and run casing.

2. Control the drilling pressure and feed the drilling tools during the drilling process.

3. With the help of the cat head, attach and remove the threaded thread of the drilling tool, lift heavy objects and perform other auxiliary work.

4. Serve as the transmission mechanism or intermediate transmission mechanism of the turntable.

5. Lift and lower the derrick and base as a whole.

Price of Drawworks

The Drawworks Price will change randomly with factors such as production cost, transportation cost, international situation, exchange rate, market supply and demand of raw materials. Sino Mechanical, as one of global Drawworks manufacturers, aims to provide you with high quality and best price Drawworks. If you are looking for Drawworks or Drawworks spares, please kindly contact us to get the latest Drawworks price.

Drawworks Supplier

Sino Mechanical, as a Drawworks manufacturer, has more than 20 years extensive experiences in the performance, application and cost-effective manufacturing of Drawworks. We are global Drawworks supplier. We offer a wide range of drilling equipment and have Drawworks for sale. We also provide OEM services. We design, manufacture, and sell Drawworks for your drilling applications. If you want to know latest Drawworks price , don’t hesitate to contact us anytime. We will get back to you within 24 hours.