The working principle of the drilling fluid cooling system

The working principle of the drilling fluid cooling system is to extract the hot mud in the mud tank through the sand pump and discharge it to the spray system of the cooling tank. The electric fan in the cooling tank forcibly sucks the external cold air into the tank, so that the hot mud is sprayed downward to the packing layer under the uniform distribution of the spray system, forming a layer of water film. Through the packing layer, the mud exchanges heat with the cold air entering the tank, reducing the temperature of the mud. Finally, the hot and humid air is discharged out of the tank by the fan, and the cooled mud enters the water receiving tank and is discharged.

The drilling fluid cooling system has a large air volume and total flow rate, the air volume reaches 68000m3/h, and the total flow rate is 180m2/h. The system uses two motors with a power of 4.0kw to drive the fan, and the diameter of the fan is 1800mm. This design enables the system to efficiently cool the slurry.

The inlet water temperature of the cooling tank is 80-90°C, while the outlet water temperature is 55-60°C, and the temperature difference during the cooling process can reach 20-25°C. Through this cooling process, the system can stabilize the temperature of the drilling fluid in a lower temperature range, ensuring that the performance of the drilling fluid is not affected by temperature, thereby ensuring the safety and smooth progress of drilling operations.

Such a drilling fluid cooling system has important advantages in actual drilling operations. First, by effectively reducing the temperature of the drilling fluid, the system prolongs the service life of drilling tools such as drill bits and drill pipes, reducing the risk of drill tool wear and damage. Secondly, the stability of the drilling fluid is maintained, which helps to prevent problems such as well wall instability that may occur during drilling. In addition, the cooled drilling fluid helps to save resources and reduce costs while improving drilling efficiency.