Month: September 2024

When the centrifuge is working, the drilling fluid enters the centrifuge through the feed pipe, and then is accelerated on the conveyor shaft barrel and flows into the drum through the feed hole in the shaft barrel. Due to the extremely high rotational speed of the cylinder, under the action of centrifugal force, the particles with large density or volume are thrown to the inner wall of the cylinder, so that the solid-liquid phase is separated. The solid is sent to the small end of the drum by the conveyor and discharged through the bottom flow port; The fluid containing fine particles flows in the opposite direction to the large end of the drum and is discharged from the overflow port. The thickness of the liquid layer in the cylinder is controlled by adjusting several overflow holes on the centrifuge face. The conveyor can continuously push the settled solid particles towards the small end. When moving to the transition zone of the dry and wet zone of the centrifuge, due to the role of centrifugal force and extrusion pressure, most of the free water is squeezed out, and the adsorption water is mainly left on the surface of the particles. Most centrifuges in the field have a capacity of 40-60m3/h

Note:

1. Before starting the machine, remove the debris that affects the operation of the centrifuge and check the fastening cover.
2. Rotate the main motor pulley and auxiliary motor pulley by hand, if there is a blockage phenomenon should be eliminated in time; Check whether the motor running direction is consistent with the indicated direction.
3. Turn on the power switch, start the auxiliary motor first, pay attention to the normal operation, and then start the main motor, if there is an anomaly should stop to check and eliminate it.
4. Open the inlet valve and start the liquid supply pump to supply liquid to the centrifuge. If there is no abnormality, the diverter valve should be gradually closed until the full flow. If the centrifuge load is found to be too heavy, the diverter valve can be opened appropriately.
5. When the solid phase discharged from the centrifuge sand discharge tank is too dry or too wet, the overflow baffle or liquid intake can be adjusted.
6. When you need to stop, first turn off the motor of the liquid supply pump.
7. Start the motor of the cleaning pump, and open the valve to clean the inner wall, outer surface, and sand discharge tank respectively, and the cleaning time shall not be less than 60 seconds. (If there is no cleaning pump, it can be cleaned directly with the website water source.)
8. Turn off the motor of the cleaning pump.
9. Turn off the main motor and turn off the auxiliary motor after 2 minutes.

Drilling fluid solid control system is an important part of oil drilling engineering, it is responsible for the purification of drilling fluid, to ensure the stability of drilling fluid performance, so as to ensure the smooth progress of drilling operations. In the drilling fluid solid control system, the choice of pipe material is very important, because it is directly related to the corrosion resistance, wear resistance and service life of the system. Here are some common pipe materials:
1.Carbon steel: carbon steel is an alloy steel made of iron as the main component and a certain amount of carbon is added. It is widely used in the pipeline material of drilling fluid solid control system, especially when the conveying medium is oily or less corrosive to steel. Carbon steel has good mechanical properties and weldability, but its corrosion resistance is weak, and it is usually necessary to improve the corrosion resistance by coating or coating.

2. Stainless steel: Stainless steel is an alloy steel with a chromium content of at least 10.5%, which has excellent corrosion resistance. In the drilling fluid solid control system, when the conveying medium is highly corrosive drilling fluid, stainless steel is often selected as the pipeline material. In particular, type 304 and 316 stainless steels, which contain nickel and molybdenum, can resist the corrosion of gasification and are suitable for offshore drilling environments.
   (3) Duplex steel: Duplex steel is a special low carbon steel, through the control of the heat treatment process, so that it has an iron surface and austenitic biphase structure. It combines high strength and good toughness with good corrosion resistance. In drilling fluid solid control systems, duplex steel is suitable for applications requiring high strength and good corrosion resistance.
3. Super duplex steel: Super duplex steel is a kind of duplex steel, but it has higher strength and better corrosion resistance. It contains high chromium, molybdenum and nitrogen content, which significantly improves its resistance to pitting and stress corrosion cracking. In extremely demanding drilling environments, super duplex steel is the ideal pipeline material of choice.
4. Nickel-based alloy: Nickel-based alloy is an alloy formed with nickel as the main component and other alloy elements such as chromium, molybdenum, copper, etc. It has excellent corrosion resistance and high temperature resistance, especially in environments containing hydrogen sulfide. Nickel-based alloys are expensive and are often used in drilling fluid solid control systems where corrosion resistance is highly required.
   When selecting the pipe material for drilling fluid solid control system, the following factors should also be considered:
5. Medium properties: According to the composition of drilling fluid, such as oil, water, sand content, etc., select the appropriate pipeline material.
6. Use environment: consider the temperature, pressure, corrosion and other factors of the drilling environment, select the corresponding pipeline material.
7. Cost budget: under the premise of meeting technical requirements, consider the cost of pipeline materials and maintenance costs.
   To sum up, the selection of pipe material for drilling fluid solid control system is a complex engineering decision, which requires comprehensive consideration of multiple factors.

Since the first set of Kosun solid control equipment entered the domestic market in 2014, Kexun’s products have been highly praised in the country, after years of accumulation, Kexun has accumulated different customer groups at home and abroad. That includes 3 barrels of oil, multiple mud service companies, and environmental companies. Just recently, we received inquiries and orders from our customers. Its demands are as follows

1. High-frequency drying screen, 4 pieces of the screen, screen using composite material screen.
2. High-speed variable frequency centrifuge, which uses two-way stainless steel drum material, and the screw discharger is inlaid with a wear-resistant alloy sheet.

The company took into account the particularity of the customer’s project and the relatively short cycle. Finally, we selected the popular model equipment, which has been serving customers for many years and has stable working performance.

one High-performance vibrating screen with a 4-piece composite screen.

2. High-speed variable frequency centrifuge. Centrifuge can be adjusted from 0-3200, frequency conversion PLC touch screen control. This 360mm diameter centrifuge is the most popular for barite recovery at low or medium speeds; It also provides higher speed for reducing mud weight.

To date, we have sold more than 100 slurry treatment systems and served more than 100 oil RIGS. So far, the customer is very satisfied with the performance of the 363 centrifuges. In addition to the above equipment, kosun can provide a complete product line of solid control equipment, as well as drilling cuttings treatment equipment. kosun’s cuttings dryer, which can efficiently solve the drying problem of oil-based cuttings, has passed the practice certification of many customers at home and abroad and has been unanimously praised. If you need any support, please contact us.