The main shield tunnel sludge treatment systems of KOSUN.

After years of mud equipment design and manufacturing, The mud and water separation, slurry dehydration, slurry drying equipment and complete system of KOSUN have been widely used in many construction projects, such as pipe jacking construction, horizontal directional crossing, pile foundation engineering and underground diaphragm wall engineering. the pile foundation engineering and the construction of the underground continuous wall, and other construction projects, accumulated the rich spate separation field cases, and gradually formed its own in the field of shield mud treatment sludge treatment integration solutions.

The main shield tunnel sludge treatment systems are kd-200-k1 mud treatment system, d-series kds-500 mud treatment system, kd-500 mud treatment system, kd-200 mud treatment system, and kd-100 mud treatment system. In addition, we can also customize an exclusive shield tunnel sludge treatment system according to the actual needs of customers and the actual situation of the construction site.

KOSUN shield tunnel sludge treatment system is a modular structure design system. Designed for mud purification in all kinds of large, medium and small sized mud and water balance shield construction projects. The system is composed of coarse vibrating screen module, desander module and desilter module. Coarse vibrating screen module is equipped with coarse screen for removing large particles. desander module is equipped with multiple desander hydrocyclones.

Kosun- China Solids Control Leader&Drilling Waste Management Expert

Tel.: 029-89565356


Contact person: Jinbo Zheng

Contact person: Jinbo Zheng

Use and maintenance method of KOSUN SP series shear pump.

Oil drilling fluid (mud) is mainly composed of four parts: water, active solid phase, inert solid phase and chemical treatment agent. According to the proportion and interaction of each component, different components and different properties of mud can be formed. Therefore, mud composition is the key factor to adjust the performance.

In the preparation and treatment of mud, the traditional preparation method is difficult to achieve the high shear force required for direct hydration of soil and polymer, so it requires a long preparation and treatment time. The SP shear pump developed by KOSUN can quickly prepare high performance mud, greatly shorten the preparation time of mud and improve the economic benefit of drilling.

Use and maintenance method of KOSUN SP series shear pump:

1. After each use, circulate the pipeline and shear pump with clean water to avoid debris blocking the flow path and nozzle of the impeller;

2. Check the machine oil level of the oil pool in the support before use. If it is insufficient, it should be replenished.

3 packing box packing and mechanical seal two.When the seal fails, it should be replaced in time.

4. When using the mechanical seal, it is strictly forbidden not to empty the liquid, so as to avoid damage to the mechanical seal. When the lubricating and cooling oil of the mechanical seal is insufficient, it should be timely supplemented.

Xi ‘an KOSUN is a professional company providing comprehensive solutions for oily sludge treatment.

Xi ‘an KOSUN is a professional company providing comprehensive solutions for oily sludge treatment in the field of energy conservation and environmental protection, focusing on the development and service of complete sets of technologies and equipment such as reduction and resource utilization of oily sludge.

Source of oily sludge

1. Oily sludge generated by crude oil exploitation

The oily sludge generated in the process of crude oil exploitation mainly comes from the ground treatment system. The oily sludge generated in the process of oil production sewage treatment, together with the flocs formed by the water purification agent added in sewage purification treatment, the corrosion products and scale of equipment and pipelines, and bacteria (corpse), etc., constitute the oily sludge. This kind of oily sludge generally has the characteristics of high oil content, high viscosity, fine particle size and difficulty in dehydration, which not only affects the quality of crude oil, but also affects the water quality of injection in profile control of injection Wells and leads to the difficulty in reaching the standard of effluent.

2. Oily sludge is generated in the process of oilfield technology

Oily sludge may also mainly come from oil storage tanks, sedimentation tanks, sewage tanks, grease trap bottom sludge, oil sands and sludge removed from oil and water treatment facilities of refinery, light hydrocarbon processing plants and natural gas purification devices, as well as crude oil and oily sludge landed from drilling, operation and pipeline perforation. When storing oil in oil storage tank, a small amount of mechanical impurities, sand grains, soil, heavy metal salts, paraffin and asphaltene and other heavy oil components in oil products are deposited at the bottom of oil tank, forming oil sludge at the bottom of tank. In addition, the sewage from primary settling tank, secondary settling tank and well washing water recovery tank can also produce oily sludge.

3. Oily sludge generated from the sewage treatment plant of the refinery

The oily sludge in the sewage treatment plant of the refinery mainly comes from the bottom sludge of the oil separation tank, the scum of the flotation site and the bottom sludge of the original oil tank, commonly known as “three mud”. These oily sludge consists of different compositions, usually with an oil content of 10%~50%, an moisture content of 40%~90%, and a certain amount of solids.

KOSUN MD series high efficiency mud cleaner

KOSUN MD series high efficiency mud cleaner is the second and third level solid control equipment in the drilling fluid purification system, which can further separate the smaller particles solid phase contained in the mud treated by the shaker, so that the mud can enter the fourth level separation equipment. The mud cleaner can be used alone, or its bottom flow vibrating screen can be used as a parallel standby device of the first solid control vibrating screen.

Precautions for use of KOSUN MD series mud cleaner:

1. The hydrocyclone is an important separation and classification equipment of mud cleaner. In the process of use, special attention should be paid to the maintenance of the hydrocyclone.

2. When the fluid ejected from the cyclone group is not uniform umbrella shape, the appropriate knob drip nozzle, and observe until return to the normal state.

3. For the use effect and service life of the hydrocyclone, the drip nozzle and other parts should be cleaned and maintained normally.

4. When the bottom flow screen does not move in accordance with the prescribed track, the installation direction may be wrong or there is a problem with the motor circuit, the power should be immediately disconnected to check the motor or circuit, to ensure its return to normal.

5. If the bottom flow sieve appears the phenomenon of running pulp or blocking the sieve, the Angle of the sieve box should be adjusted in time, and ensure that the selected sieve mesh is suitable for the mud to be treated.

6. Always observe and test the bottom flow screen. The damaged screen should be replaced or repaired in time. After each time out of use to the bottom flow screen and screen do necessary cleaning.

7. Regular cleaning and inspection should be carried out on each part of the mud cleaner to ensure the use effect and service life.

The whole drilling fluid solid control system of KOSUN

At present, solid control equipment focuses on the development of desander, desilter, degasser and other equipment with small occupation area, high efficiency and long life, and integrates with high-speed centrifuge to realize automatic detection and control of solid control system according to the test results.

Xi ‘an KOSUN is a leader in the solid state control industry of oil drilling in China and a comprehensive service provider of solid state control and waste disposal of oil drilling in the world. Since its establishment in 1992, xi ‘an KOSUN has been the main supplier of solid control products in the field of petroleum and natural gas drilling equipment in China, as well as the oldest and only centrifuge manufacturer in five northwestern provinces of China, and the producer of high-frequency vibration drying of the first generation drilling fluid in China.

The whole drilling fluid solid control system of KOSUN can be separated and connected between tanks and silos to meet the needs of drilling operations. The system is equipped with 5-level purification equipment, contains shale haker, vacuum degasser, desander cleaner, desilter and centrifuge, etc., the use of drilling fluid solid control system, can effectively reduce the waste mud, reduce the cost of drilling, protect the environment around the well site.

According to the requirements of field operation, KOSUN can provide customers with mobile vehicle-mounted fixed control system, saving space and facilitating transportation.

The performance and quality of drilling fluid solid control equipment is the key to solid control technology. Drilling fluid solids control system mainly includes the drilling fluid circulating tank, drilling fluid purification treatment equipment and electric control equipment three parts, including drilling fluid purification treatment equipment mainly include shale shaker, desander, desilter, degasser, centrifuge, sand pump, mixer, etc., aiming at environmental sensitive areas, can also configure cuttings recycling and waste liquid processing equipment.