KOSUN

博客

  • Harmless treatment of shale gas oil-based mud

    During the development of shale gas, horizontal drilling operations generate a large amount of waste oil-based mud. If this type of slurry is discharged directly without proper treatment, it will not only cause serious pollution to the natural environment such as soil and water bodies, but also lead to a large waste of oil resources. At present, the centrifugation-distillation treatment technology initially applied in engineering still has problems such as high operating costs and low treatment efficiency. Therefore, Kosun Machinery is actively committed to developing efficient, economical and environmentally friendly processes for the treatment and resource recovery of waste oil-based mud, providing key technical support for promoting the large-scale green development of shale gas.

     
    In response to the current industry pain points of inconsistent methods for determining the oil content of waste oil-based mud and significant data differences, Kosun Machinery has established a scientific and reliable component analysis method for waste oil-based mud through systematic comparison and experimental research, covering key indicators such as oil content, water content, solid content, organic matter content and density. Based on this, the company focused on the research and development and evaluation of three treatment and recovery processes: sonochemical demulsification – centrifugal separation, centrifugation – low-temperature thermal distillation, and centrifugation – vacuum thermal distillation, and systematically analyzed their treatment efficiency and economic benefits under laboratory conditions.

     

     
    Drawing on advanced treatment experiences both at home and abroad, Kosun Machinery has further improved the full-component analysis system for waste oil-based mud and developed corresponding treatment equipment. After actual processing and verification, the oil content of the oil-based waste treated by Kosun equipment is significantly lower than the limit values stipulated in the "Emission Standard of Pollutants for Onshore Petroleum and Natural Gas Extraction Industry (Draft for Comment)" of China – that is, the oil content for landfill in ponds is less than 3%, and the oil content for land disposal is less than 1%, fully meeting the environmental protection emission requirements.

     

    The treatment solution provided by Kosun Machinery not only realizes the harmless treatment of waste oil-based mud, but also achieves the efficient recovery and reuse of oil resources, with significant environmental and economic benefits. We sincerely welcome both new and old customers to consult technical solutions and exchange process experiences, and jointly contribute to the sustainable and green development of the shale gas industry.

  • Cyclone and its application in solid phase control of drilling fluid

     
    I. Hydrocyclones and Their Application in Solid Phase Control of Drilling Fluids I. Overview of Hydrocyclones A hydrocyclone is a device that uses centrifugal force for solid-liquid separation and is widely used in solid phase control of drilling fluids. According to their structural and functional differences, cyclones are mainly classified into three types: sand removers, desilters and micro cyclones.

     

     
    Ii. Types and Working Principles of Cyclones
    1. Sand remover: The sand remover is mainly used to remove large sand particles from drilling fluids. Its working principle is to utilize the high-speed rotation of the drilling fluid inside the hydrocyclone, generating a strong centrifugal force. Under the action of the centrifugal force, large sand particles are thrown towards the hydrocyclone wall and then discharged through the underflow port, thereby achieving solid-liquid separation.
    2. Desilter: The desilter is mainly used to remove fine clay particles from drilling fluids. Its working principle is similar to that of a sand remover, but because it targets smaller particles, its structure is more refined. Inside the cyclone, fine clay particles are separated under the action of centrifugal force and discharged through the overflow port.
    3. Micro hydrocyclone: A micro hydrocyclone is a small type of hydrocyclone mainly used for processing small-flow drilling fluids. Its working principle is similar to the above two types of cyclones, but due to its smaller size, it is mainly used for local solid-liquid separation.
    Iii. Types and Working Principles of Micro Hydrocyclones A micro hydrocyclone is a compact and easy-to-operate solid-liquid separation device. Its working principle is to utilize the centrifugal force generated by the high-speed rotating drilling fluid to separate solid particles from the liquid under the action of centrifugal force. According to different application requirements, micro hydrocyclones can be classified into various types, such as single-stage micro hydrocyclones and multi-stage micro hydrocyclones.

     


     
    Iv. Functions of the Hydrocyclone 1. Solid-phase control: The primary function of the hydrocyclone is to separate solid particles from the liquid in the drilling fluid through centrifugal force, thereby achieving solid-phase control of the drilling fluid. This helps to improve the purity and performance of drilling fluid and extend the service life of drilling equipment. 2. Protecting equipment: By removing solid particles from drilling fluid, the hydrocyclone can protect drilling equipment from wear and clogging. This helps to improve the operational efficiency and reliability of the equipment. 3. Enhance drilling efficiency: By controlling the solid content of drilling fluid, the efficiency and quality of drilling can be improved. This helps to reduce faults and accidents during the drilling process and improve the overall drilling effect.
     
    V. The Working Principle of the cyclone for Solid Phase Control in drilling Fluid The cyclone for solid phase control in drilling fluid mainly achieves solid-liquid separation through centrifugal force. When the drilling fluid enters the hydrocyclone, due to the special structure inside the hydrocyclone, the drilling fluid is rotated at high speed. During the rotation process, solid particles are subjected to the effect of centrifugal force and are thrown towards the wall of the cyclone. Then, the solid particles are discharged through the underflow port or overflow port to achieve solid-liquid separation. This can effectively remove solid particles such as sand and clay from the drilling fluid, achieving the purpose of solid phase control. In conclusion, the cyclone, as an important solid-liquid separation device, plays a significant role in the solid phase control of drilling fluids. By understanding its types, working principles and functions, cyclones can be better applied to control the solid phase of drilling fluids, thereby enhancing drilling efficiency and quality.

  • What are the parts prone to failure during the use of solid control equipment

    Solid control equipment itself is by a lot of equipment to complete the task, the development trend of solid control equipment in China is very stable, because solid control equipment is a very important equipment in the solid phase control of oil drilling, the utilization rate of solid control equipment is very high, so it is inevitable to produce failures, below we will talk about what parts of the problem in the failure of solid control equipment. What are the causes and solutions to these problems?
     

    The slurry vibrating screen of solid control equipment sometimes fails to run drilling fluid, mainly because the drilling fluid displacement is greater than the load of the vibrating screen, the viscosity of the drilling fluid is too high, the sieve mesh number can not leak down or the drilling fluid is mixed with a large number of fiber substances, affecting the drilling fluid leakage, or it may be because the sieve cloth is not washed in time after the drilling stop circulation. The drilling fluid dried the sieve cloth to death, and only when we use these problems in time to prevent them from happening.
     
    Mud shaker
     
    Sometimes in solid control equipment, the desander and desilter swirl funnel will be blocked, causing the equipment to be unable to use, which is the reason for the unreasonable use of mud vibrating screen or screen damage, followed by the sand pump and desilter pump upper water pipe is not installed filter screen, large particles of rock debris into the swirl funnel caused by blocking. Therefore, we must ensure that the installation position is reasonable and the installation parts are complete when we use them.
     
    Solid control equipment in the use of drilling fluid mixer is often damaged a equipment, the main reason is that in the use of drilling fluid density, high viscosity, mixer power is low, resulting in the use of overload, can not adhere to continuous operation. If there is no timely maintenance and lubrication and installation is not reasonable, it will also cause this phenomenon. Therefore, we must pay more attention to the maintenance and repair of the equipment, and the regular operation method can be exchanged for the normal use efficiency.

  • How to choose a drilling fluid centrifuge in oil drilling engineering

    Drilling fluid centrifuges are indispensable equipment in oil drilling engineering. Their main function is to separate solid particles in drilling fluid to ensure the performance and quality of the drilling fluid. Selecting the appropriate drilling fluid centrifuge is of great significance in improving drilling efficiency, reducing drilling costs, and protecting the environment. This article will explore how to select a drilling fluid centrifuge from the following aspects.

     

    I. Understand the basic types of drilling fluid centrifuges
    Drilling fluid centrifuges are mainly classified into the following types:
    Sedimentation centrifuge: It uses centrifugal force to make solid particles settle and separate in a high-speed rotating drum.
    Separation centrifuge: Through high-speed rotation, it separates liquids and solid particles of different densities.
    Filter centrifuge: Separates solids and liquids through a filter medium.
    Understanding different types of centrifuges helps to select the appropriate equipment based on specific drilling conditions.
    Second, consider the properties of the drilling fluid
    The properties of drilling fluid are crucial to the selection of centrifuges. The following are several key drilling fluid parameters:
    Density: High-density drilling fluid requires a higher centrifugal force to effectively separate solid particles.
    Viscosity: High-viscosity drilling fluids require stronger centrifuges for processing to prevent clogging.
    Solid content: Drilling fluids with high solid content require more efficient separation equipment.
    Iii. Determine the processing capacity
    Processing capacity is one of the factors to be considered when choosing a centrifuge. Processing capacity mainly includes two aspects:
    Processing capacity: The volume of drilling fluid that a centrifuge can process within a unit of time.
    Separation efficiency: The proportion of solid particles that a centrifuge can separate from drilling fluid.
    Generally speaking, the higher the processing capacity, the larger the size and power requirements of the centrifuge will be accordingly increased.

     

    Iv. Evaluate the performance parameters of the equipment
    When choosing a centrifuge, the following key performance parameters need to be paid attention to
    Rotational speed: High rotational speed means stronger centrifugal force, which can separate solid particles more effectively.
    Power: High power can ensure the stable operation of the centrifuge under high load conditions.
    Wear resistance: Drilling fluid contains a large number of abrasive particles. The wear resistance of the centrifuge directly affects its service life.
    V. Consider the operation and maintenance of the equipment
    The convenience of operation and maintenance is also an important factor to be considered when choosing a centrifuge. Specifically including:
    Degree of automation: Equipment with a high degree of automation can reduce manual intervention and improve work efficiency.
    Maintenance convenience: Equipment that is easy to disassemble and clean can reduce downtime and improve equipment utilization.
    Spare parts supply: Choosing a brand with good after-sales service and spare parts supply can ensure the long-term stable operation of the equipment.
    Conclusion
    Selecting the appropriate drilling fluid centrifuge requires a comprehensive consideration of multiple factors, including equipment type, drilling fluid properties, processing capacity, performance parameters, ease of operation and maintenance, economy and environmental protection performance, etc. Through analysis and evaluation, centrifuges suitable for specific drilling conditions can be selected, thereby enhancing drilling efficiency, reducing costs and protecting the environment.

     

  • Kosun Machinery HDD Mud Recycling System: Efficient recycling and utilization, facilitating green trenchless construction

    Kosun Machinery's HDD mud recycling system is dedicated to achieving efficient recycling and reuse of waste mud. It not only significantly reduces users' operating costs and enhances economic benefits, but also effectively protects drilling rig equipment and reduces pollution to the surrounding environment. This system, through the collaborative operation of solid control equipment such as vibrating screens, desanders, desilters and mud cleaners, conducts multi-stage screening and purification treatment of drilling waste mud, ultimately achieving the recycling of mud.

     

    This system is an efficient mud treatment solution specifically developed for trenchless engineering. Its core objective is not to completely remove all solid substances, but to selectively separate useless solids such as drill cuttings from liquid mud, retaining reusable mud base fluid, thereby achieving dual benefits of economy and environmental protection.
     
    The core advantages of Kosun Machinery's HDD mud recovery system:
    The technology is mature and widely applicable
    Relying on 30 years of experience in the solid control industry and combining in-depth market demand analysis, the system structure is scientific and the processing technology is advanced, which can be widely applied to various trenchless working conditions.
    Integrated design with comprehensive functions
    It integrates the functions of mud cleaning, recycling and reuse, preparation and storage. The equipment has a compact structure, significantly reducing the floor space occupied by the tank. It is particularly suitable for horizontal directional drilling construction sites with limited space.
     
    It is safe and reliable, and can adapt to harsh environments
    The electrical system is equipped with explosion-proof, dust-proof and rain-proof performance, ensuring the safety and stability of the construction process and improving the project quality.


     

    The structure is lightweight and easy to move and install
    The tank is designed simply and is lightweight. The corridor and guardrail can be folded or disassembled, which greatly facilitates the transportation of the equipment and the rapid installation on site.
     
     
    It has complete qualifications and an excellent reputation
    Kosun Machinery has obtained the API certification of the American Petroleum Institute, ISO system certification, and the CE certification of the European Union. It has also become the first Chinese enterprise to obtain the full set of access certificates for drilling solid control equipment from Russia. It has the access qualifications of China National Petroleum Corporation, China Petroleum & Chemical Corporation and China National Offshore Oil Corporation at the same time, and has been awarded multiple authoritative recognitions such as "High-tech Enterprise" and "Leading Enterprise of Xi 'an Science and Technology Small Giant". The product quality and brand strength are fully guaranteed.

     

  • Analysis of Solid Phase Control of Drilling Fluid and Advantages of Kosun Solid Control System

     
    Solid particles in drilling fluids can be classified into two major categories: harmful solids and useful solids, among which cuttings are the most significant harmful solids. Throughout the entire drilling process, cuttings can significantly affect the physical properties of the drilling fluid, leading to an increase in its density, viscosity, dynamic shear force, water loss, mud cake thickness, abrasiveness, viscosity and flow resistance. In addition, cuttings can also cause damage to oil and gas layers, reduce the mechanical drilling rate, increase the torque of the turntable, and lead to complex downhole situations such as obstructions during drilling and lowering, stuck sticking, well leakage, and even blowouts. Meanwhile, the presence of a large amount of rock debris will also accelerate the wear and tear of the equipment in the circulation system.

     

    The role of the solids control system
    The main function of the solid control system is to efficiently remove harmful solids from the drilling fluid while retaining useful solids as much as possible to ensure that the performance of the drilling fluid meets the requirements of the drilling process. Among various solid control methods, mechanical removal is currently the most economical and efficient treatment approach.
     
    Main solid control equipment
    The commonly used solid control equipment mainly includes vibrating screens, desanders, desilters, centrifuges and degasifiers. These devices respectively target solid particles of different particle size ranges to achieve classification treatment, thereby enhancing the overall solid control efficiency.
    System integration and optimization
    The solid control system is not merely a simple superposition of individual devices, but rather an integrated whole formed by scientifically combining various solid control devices in accordance with the requirements of the drilling fluid purification process. Reasonable configuration and coordinated operation can significantly enhance the removal effect of harmful solid phases and ensure the safe and efficient progress of drilling operations.



     

    The advantages of Kosun Solid Control System:
    1. High-efficiency classification treatment: A multi-stage combination of vibrating screens, desanders, desilters and centrifuges is adopted to achieve precise removal of solid particles of different sizes step by step, significantly enhancing the efficiency of solid control.
    2. Intelligent coordinated control: Through system integration and optimization, the best coordination among various devices is achieved, which can not only effectively remove harmful solid phases but also retain useful solid phases to the greatest extent.
    3. Durable and reliable design: The equipment is made of wear-resistant materials and has a sturdy structure, which can adapt to harsh drilling environments and ensure long-term continuous and stable operation.
    4. Energy conservation and environmental protection features: The optimized system design reduces energy consumption and effectively controls drilling waste, meeting environmental protection requirements.
    5. Strong adaptability: The system configuration and operating parameters can be flexibly adjusted according to different drilling conditions and drilling fluid performance requirements.

     

  • The key influencing factors of the working efficiency of drilling fluid vibrating screens

     
    During the process of oil drilling, drilling fluid is transported to the mud control system by mud pumps. As the first processing equipment of this system, the drilling fluid vibrating screen plays a key role in the solid-liquid separation process due to its early separation time, fast processing speed and economic efficiency. The working efficiency of the vibrating screen directly determines the processing capacity of the entire mud control system. Therefore, it is crucial to clearly identify the main factors that affect its working efficiency. These factors can be summarized into the following three aspects:
    I. Vibration Mode
    The vibration modes of vibrating screens mainly include three types: linear motion, circular motion and elliptical motion. The position of the center of gravity of the vibrator is the key to determining the vibration mode: when the center of gravity is located within the vibrator itself, the equipment generates circular motion. If the center of gravity is above the vibrator, an elliptical motion will be formed. Such motion needs to rely on the slope of the screen to achieve the transportation of drill cuttings, but it will to some extent reduce the processing capacity of the screen. When the center of gravity is above the vibrator and slightly forward, the vibrating screen moves in a straight line, and this mode can maintain a stable drilling cuttings conveying speed.

     

    Ii. Amplitude and Frequency
    The amplitude, vibration mode and the rotational speed of the vibrating motor jointly determine the processing capacity of the vibrating screen. Among them, the motor speed directly affects the vibration frequency. The higher the frequency, the better the general solid-phase separation effect. For instance, the vibration frequency of domestic high-frequency vibrating screens is mostly maintained at around 2,000 times per minute.
    Amplitude refers to the vertical movement distance of the vibrating screen, which is jointly determined by the vibration mass and the eccentricity. The vibration intensity is reflected in the centrifugal acceleration generated by the vibrator, which indicates the magnitude of the force exerted by the screen on the solid particles. Theoretically, increasing the amplitude can enhance the processing effect, but it will also lead to an increase in the force on the equipment, which may shorten its service life. Therefore, in both design and practical application, a balance between performance and durability needs to be comprehensively considered.
     
    Iii. Mesh Count and Material of the Screen
    Generally, shale vibrating screens are equipped with 2 to 4 layers of screens, and the drilling fluid passes through each layer of screens in sequence for classification treatment. Improper selection of the mesh size of the screen or its damage will significantly reduce the efficiency of solid-phase separation. In addition, improper installation can also cause the screen to wear out or tear prematurely. Therefore, when choosing a screen, it is essential to attach great importance to its material properties and installation quality to ensure the continuous and stable operation of the equipment.
    The advantages of Kosun vibrating screen
    The vibrating screens manufactured by Xi 'an Kosun Machinery have significant advantages in the field of oil drilling:
    Firstly, modular design and high-precision processing techniques are adopted to ensure the smooth and reliable operation of the equipment.
    Secondly, it offers multiple adjustable vibration modes, which can adapt to different formation conditions and drilling requirements.
    Thirdly, it is equipped with high-quality motors and shock absorption systems, which not only ensure the efficiency of high-frequency vibrating screening but also extend the service life of the equipment.
    Finally, by adopting high-strength composite screen mesh materials and combining them with scientific structural design, the durability and processing efficiency of the screen mesh are significantly enhanced, providing customers with an economical and efficient all-round solid control solution.

  • What factors affect the horizontal screw centrifuge?

    The horizontal screw centrifuge mainly consists of a drum, a screw, a differential system, a liquid level baffle, a drive system and a control system, etc. It is a dedicated solid-liquid separation equipment designed in accordance with the characteristics of petroleum drilling fluid. It can complete various processes such as feeding, centrifugal sedimentation and unloading at full speed. It is mainly used for recovering barite, removing fine solids, reducing the solid content of drilling fluid, controlling the density and viscosity of drilling fluid, ensuring the performance of drilling fluid and playing an important role in rapid drilling. The centrifuge separates the drilling suspension by the principle of centrifugal sedimentation. The suspension enters the drum through the liquid outlet hole in the screw conveyor from the feed pipe. Under the action of centrifugal force, the solid particles are pushed to the inner wall of the drum and discharged through the slag discharge port at the small end of the drum by the blades on the screw conveyor. The liquid phase overflows through the overflow hole at the large end of the drum. This cycle is repeated continuously to achieve the purpose of continuous separation. The sedimentation centrifuge belongs to the category of horizontal screw centrifuges, and its full name is horizontal screw sedimentation centrifuge.

     

    The horizontal screw centrifuge mainly consists of a drum, a screw, a differential system, a liquid level baffle, a drive system and a control system, etc. It is a dedicated equipment for solid-liquid separation in oil drilling fluids. It can continuously complete the processes of feeding, centrifugal sedimentation and unloading at full speed. It is widely used in recovering barite, removing fine solids, reducing the solid content of drilling fluid, regulating the density and viscosity of drilling fluid, and plays a key role in maintaining the performance of drilling fluid and ensuring rapid drilling. Its working principle is centrifugal sedimentation: The suspension enters the drum through the feed pipe. Under the action of centrifugal force, solid particles are pushed to the inner wall and discharged from the small end slag discharge port by the spiral blades, while the liquid phase overflows through the large end overflow hole, thus achieving continuous separation.
     
    The factors influencing the performance of horizontal screw centrifuges include the mechanical structure itself and its adjustable operating parameters, which can be specifically classified into non-adjustable mechanical factors, adjustable mechanical factors and process factors.
    Non-adjustable mechanical factors
    Drum diameter and effective length: They directly affect the settlement area. The larger the diameter and length, the stronger the processing capacity.
    Drum semi-cone Angle: An increase in the cone Angle helps improve the clarification effect, but it will reduce the efficiency of slag conveying and dewatering.
    Pitch: If the pitch is too large, it will increase the risk of material blockage, reduce the number of screw turns, and easily cause vibration. For difficult-to-separate materials, a smaller pitch is recommended.
    Spiral type: It is divided into counter-flow type and co-flow type. The counter-flow feed inlet is located at the junction of the sedimentation zone and the drying zone, which is prone to cause the already settled particles to float up again and has a certain interference with the separation effect.



    Adjustable mechanical factors

    Drum speed: The speed affects the magnitude of the centrifugal force. Increasing the rotational speed can enhance the solid-phase compaction degree, but if it is too high, it will damage the floc structure, reduce the dewatering effect, and at the same time increase energy consumption and equipment wear.
    Differential velocity (differential ratio) : Increasing the differential velocity can enhance the sludge discharge capacity, but it will shorten the dewatering time, leading to an increase in the moisture content of the mud cake and a decline in the quality of the filtrate.
    The thickness of the liquid ring layer can be achieved by adjusting the height of the liquid level baffle. Increasing the thickness can expand the sedimentation area and improve the quality of the filtrate, but the length of the drying zone shortens and the solid content of the mud cake decreases. Reducing the thickness is the opposite. It is necessary to pay attention to keeping the heights of each baffle consistent to prevent equipment vibration.
     
    Process factors
    Before sludge dewatering, an appropriate amount of organic high-molecular flocculant (such as PAM) is usually added to improve its dewatering performance. The selection of chemicals should take into account the characteristics of the sludge and the operating conditions of the equipment. Some flocculants that perform well in experiments have poor effects in practical applications, often due to their mismatch with the operating conditions of the equipment.

     


     

  • The application fields of cyclones

    In the separation and purification process of industrial production, cyclones have become indispensable core equipment in many industries due to their advantages of high efficiency, energy conservation and small floor space. Based on the principle of centrifugal sedimentation, it can quickly separate multiphase mixtures such as solid-liquid, liquid-liquid, and gas-solid. It is widely used in fields such as mineral processing, water treatment, oil extraction, and food processing, providing key support for enterprises to reduce costs, increase efficiency, and improve product quality.



     

    The core advantages of the cyclone:
    1. High separation efficiency: With the centrifugal force generated by high-speed rotation, the separation speed is 5 to 10 times faster than that of traditional sedimentation equipment, and the solid-liquid separation accuracy can reach the micrometer level. ​
    2. Low energy consumption cost: No complex transmission components are required. It can operate solely driven by pump pressure, with equipment energy consumption being only one-third of that of a centrifuge, significantly reducing operation and maintenance costs. ​
    3. Strong adaptability: It can be customized and designed according to the material characteristics (concentration, particle size, viscosity), withstand high temperature, high pressure and corrosive working conditions, and meet the needs of different industries. ​
    4. Flexible installation: Compact in size, it can be used as a single unit or in parallel or series with multiple units to form a system, adapting to production lines of different production capacities and saving factory space. ​
    These advantages have enabled cyclones to be rapidly popularized in various industrial fields and become the "standard equipment" for upgrading separation processes.



     

    In mineral processing engineering, cyclones are key equipment for mineral classification, desliming and concentration. Whether it is metallic ores (copper, iron, gold) or non-metallic ores (limestone, quartz sand), they all rely on their support. For minerals with high mud content (such as kaolin and feldspar), the cyclone can quickly remove fine mud impurities from the pulp, reducing the difficulty of subsequent process treatment.
     
    With the increasingly strict environmental protection requirements, the application of cyclones in the treatment of industrial wastewater, municipal sewage and drinking water has become more and more widespread, especially in the fields of high-concentration wastewater separation and resource recovery. In the wastewater treatment of industries such as coal mining, chemical engineering, and metallurgy, cyclones can efficiently separate solid impurities such as coal slime, metal particles, and chemical sediment from the wastewater. In remote areas or emergency water supply scenarios, cyclones can quickly remove impurities such as sediment and algae from raw water. As pretreatment equipment, they can be used in conjunction with filtration systems to enhance the efficiency of drinking water purification and reduce the dosage of disinfectants.


     

    In the process of oil drilling and extraction, cyclones are mainly used for purifying drilling fluids and separating oil, gas and water, ensuring drilling safety and the quality of crude oil. During the process of oil drilling, the drilling fluid (mud) will carry a large amount of cuttings. If not purified in time, it will affect the drilling efficiency. Hydrocyclones (such as desander hydrocyclones and desilter hydrocyclones) can quickly separate sand and mud particles in drilling fluid, stabilize the performance of drilling fluid and reduce the wear of drill bits.
     
    Food processing has extremely high requirements for the hygiene and stability of separation equipment. The cyclone, with its structural design that has no dead corners and is easy to clean, also plays an important role in the processing of fruit juice, starch and edible oil.
     
    In the future, with the continuous breakthroughs in separation technology, cyclones will play a role in more specialized fields, providing more powerful equipment support for various industries to achieve the goal of "efficient production and green environmental protection".

     

  • Mud circulation system

     
    In the field of modern engineering construction, the in-depth exploration of oil drilling, the stable construction of building pile foundations, and the efficient advancement of tunnel shield machines all rely on the support of a key system – the mud circulation system. It is like the "blood circulation system" of engineering equipment, not only shouldering the core mission of slurry transportation and recycling, but also achieving precise regulation of slurry performance, prevention and control of construction safety risks, and upgrading of environmental benefits through a dynamic circulation mechanism, thus becoming an important cornerstone for the efficient implementation of various projects.
     
    A complete mud circulation system mainly consists of vibrating screens, vacuum degasser, desander, desilter, horizontal screw centrifuge, mud tank, pump set and other components. All parts operate in coordination to form a closed-loop operation process. ​

    During the construction process, the circulating pump first precisely conveys the slurry that has been prepared in advance according to geological requirements to the working surface through high-strength pipelines – whether it is the bottom of a thousand-meter well in an oil drilling rig, the deep hole inside a building pile foundation, or the face of a tunnel shield. Mud accomplishes key tasks at the working face: forming mud cakes for retaining walls in oil drilling, stabilizing the hole diameter in building pile foundations, supporting the working face during tunnel shield operations, and also cooling construction equipment and carrying rock cuttings and impurities. ​

    After the operation is completed, the waste mud carrying a large amount of rock debris will be pumped back to the ground and enter multi-stage purification equipment for treatment. After going through multiple processes such as sand removal, mud removal and dehydration, the sand content and impurity content in the waste slurry will be significantly reduced, meeting the standards for reuse. Ultimately, the purified slurry is re-transported to the operation surface, forming a complete closed loop of "transportation – operation – recycling – purification – reuse", completely breaking the traditional drawback of "one-time use" of slurry, significantly improving the utilization rate of slurry and reducing the cost of engineering consumables.


     

    In the field of oil drilling, especially in the exploration and construction of deep and ultra-deep Wells, the performance of the mud circulation system directly affects the drilling efficiency and safety. On the one hand, the mud continuously conveyed by the system will form a uniform and tough mud cake on the wellbore wall, effectively balancing the formation pressure and fundamentally reducing the occurrence of major safety accidents such as wellbore collapse and blowout. On the other hand, the circulating mud can promptly carry away the cuttings produced by the drill bit cutting at the bottom of the well, avoiding the problem of stuck drill caused by the accumulation of cuttings. At the same time, it cools down the high-speed rotating drill bit and extends the service life of the equipment.
     
    In the field of construction engineering, mud circulation systems are also indispensable in key construction links such as bridge pile foundations and high-rise building foundations, as well as in trenchless engineering. If the waste slurry in traditional construction is directly discharged, it will not only pollute the surrounding soil and groundwater, but also increase the cost of slurry procurement. With the purification function of the mud circulation system, the purified mud can be reused for drilling wall protection, which not only avoids environmental pollution but also saves the cost of mud procurement.


    In the future, under the further promotion of the green construction concept, the mud circulation system will pay more attention to resource recycling and environmental protection. On the one hand, the purification technology of the system will be continuously upgraded to achieve more efficient recycling and utilization of slurry and reduce resource waste. On the other hand, more environmentally friendly designs will be integrated, such as reducing the noise of equipment operation and minimizing the impact of additives on the environment, to help various projects achieve the dual goals of efficient construction and green environmental protection, providing a more solid guarantee for the high-quality construction of projects such as oil drilling, building pile foundation, tunnel shield, and trenchless technology.