Decanter centrifuge, as the core separation equipment, plays a very important role in the sludge reduction process. Because the oil sludge separation has a very important index for the oil content of the separated solid. The oil content of the solid after most sludge reduction needs to be controlled below 2%. In order to achieve this index, the decanter centrifuge for sludge separation has a faster wear rate on the pusher than the conventional solid controlled centrifuge because the discharge end is relatively dry.
In order to extend the service life of the centrifuge pusher, the modulated sludge must be sifted through multiple stages before entering the centrifuge to reduce the amount of gravel that wears the centrifuge too much. The vibrating screen as the primary screening provides a certain guarantee for the service life of the centrifuge.
Double-layer vibrating screen with the following characteristics:
First, the bottom frame of the screen box is made of stainless steel, which greatly improves the corrosion resistance and life.
Second, the robot welding process is stable, and the manual intervention is small.
Third, plate frame net, with wedge type screen pressing device, easy to quickly replace the screen.
Fourth, the electric screen box Angle adjustment, convenient and reliable, and mechanical Angle adjustment for backup.
5, screen box sealing patent design, good sealing effect, long service life, and easy to replace.
The first layer of screen can remove the coarse particles, and the second layer of screen can further screen the material. Compact structure saves space.
The selection of sludge treatment technology should be considered according to the characteristics of sludge, treatment objectives and economic conditions. With the improvement of environmental awareness and technological progress, sludge treatment will be more inclined to the direction of efficient, environmental protection and resource development, and contribute to the realization of sustainable development goals. , Our company made a set of sludge treatment systems for Kuwait, mainly based on the chemical hot washing method and combined with years of sludge treatment project experience after the design of a complete set of customer requirements for the sludge treatment system. The system has a complete heating system, a complete chemical agent delivery system, and a complete automatic control system. The main use of the thermochemical solution is to repeatedly wash oily sludge so that oil substances form a solid surface, and then through a complete oil-water separation system, the oil and water are separated, and the whole system water is recycled. No additional supplementary water is produced. The final solid oil content is less than 1%, meeting customer requirements. Sludge treatment is a complex and arduous task, which requires the comprehensive use of physical, chemical, biological, and other technical means. With the continuous improvement of environmental awareness and the continuous progress of science and technology, sludge treatment equipment and technology are also constantly innovative and improved. At the same time, we should also recognize that sludge treatment is not only a technical problem, but also a social problem, which requires the joint efforts and collaboration of the government, enterprises, and all sectors of society.
Piling mud is mainly composed of soil, water, and chemical substances, which contain a lot of suspended matter and organic matter, if not treated directly discharged, will cause serious pollution to the environment. Piling mud is an inevitable waste in construction projects. How to deal with the mud and ensure environmental safety and resource utilization is a problem that the construction industry must face.
First of all, the site piling mud is sent to the mud pool, and then the mud is screened by the screening equipment, and the sifted mud is passed into the plate and frame filter press through the special pump for solid-liquid separation. The extruded dry mud cake is transported to the designated area, and the water is discharged and recycled through the filter press.
Last week, Xi ‘a KOSUN production of the ZJ70 rig solid control system was successfully sent to the domestic rig factory for supporting commissioning, this cooperation is the Ukrainian customer, the final use of the equipment in Turkmenistan, mainly for the treatment of local oil drilling mud.
The ZJ70 rig solid control system is composed of a solid control tank, water tank, rain shelter, vibrating screen, vacuum degator, cleaner, variable frequency centrifuge, liquid supply pump, sand pump, mixing weight leakage, mud agitator, sitting room and other equipment to form a five-level solid control system, which can classify drilling mud. Also, it can weigh, mix, and stir mud. The equipment is simple to operate and convenient to maintain. The operating cost is effectively reduced and the overall drilling efficiency is improved. To facilitate the successful delivery of the project, the Kesun team works day and night to carry out production work, from the selection of equipment to production, and then to the internal assembly and commissioning, each link is strictly controlled to ensure that we provide customers with high-quality products. As a professional manufacturer of solid-liquid separation equipment, KOSUN has perfect experience in research and development and production of separation equipment for mud, drilling cuttings, sludge, and other materials, and provides customized transportation equipment solutions according to the characteristics of site construction, focusing on providing customers with solid waste reduction, harmless and resource services. The company has been adhering to the “quality first, customer first” business philosophy, constantly innovating and improving products and product quality and performance to meet customers’ changing needs.
Drilling fluid vibrating screen in the work, may lead to various failures of the vibrating screen, the following brief introduction to the causes of various failures and solutions:
Abnormal material flow on the screen surface of drilling fluid vibrating screen. First, the stiffness of the screen box is insufficient, there is a critical frequency, and the coupling bolts have been shaken loose, or even to the extent of full shaken loose, that is, fastening. Second, the horizontal level of the screen box is not found, from the support base of the supporting foot spring or the spring itself to find problems, change the spring or change the size of the support, and may be caused by the screen surface network damage, as long as the screen can be replaced. If the stiffness of the screen box is insufficient and the horizontal level is not found correctly, the beam will be broken, and the material flow will be abnormal if it is still running. There may be improper operation, that is, the feed is extremely unbalanced is also one of the reasons.
2, drilling fluid vibrating screen can not start or the amplitude is too small, should check the electrical barrier-free, vibration motor is damaged, or the components in the line are damaged, whether the voltage is insufficient, there is no problem in these three aspects, and then from the mechanical check, the vibrating screen screen surface of the material is accumulated too much, if it is removed. Whether the coupling bolt on the shaker falls off, whether the grease thickens and clumps, at this time, the shaker can be cleaned and repaired, and then the position of the eccentric shaft weighting block or the auxiliary eccentric block can be appropriately adjusted.
3, drilling fluid vibrating screen side plate cracks, beam fracture, structural damage, such a situation will not suddenly, is in the critical frequency of working time is too long, such as a large number of tight side plate high-strength bolts loose, spring serious deformation of the left and right height difference is very much, there may also be eccentric block each weight error is too large, causing damage to the structural parts, wall plate cracks, even beam fracture, In addition to replacing the damaged parts and tightening the bolts, when repairing the cracks in the wall panel, two 6mm holes must be punched in the second head to prevent the extension of the cracks. It should be noted that several air holes should be punched in the strengthening plate when filling the strengthening plate.
4, drilling fluid vibrating screen rotation is slow, bearing heat, this situation, indicating that the usual maintenance is not up to date, bearing lack of grease, if it is new grease, it is the quality of the oil or added too full, inferior oil makes the bearing block the maze seal plug, so the quality of grease is very important.
5, drilling fluid vibrating screen screening quality is poor, the reason is that the responsibility of improper operation is more, may be blocked mesh, the increase of fine particles in the sieve material and the increase of water, so that the sieve layer is too thick, uneven feeding and so on. It is possible that the two sides of the screen are not tight, if the shaft is eccentric vibration, the belt may be weak in the drag, the belt is too loose, and the mechanical problems are handled, and you can reverse rotate for a period of time to improve the screening quality.
6, the circular vibrating screen noise is too large, may be bearing damage, bolt loose, cross beam break and spring damage, in addition to the bolt can be tightened, the other three conditions need to replace parts.
Shale vibrating screens play a vital role in the oil drilling industry, especially in the process of separating drilling mud from drill cuttings. These devices utilize a variety of vibrating screens, including linear vibrating screens and elliptical dual-track vibrating screens, to effectively remove solids from drilling fluids. Using vibrating screens not only helps maintain drilling mud properties but also reduces the environmental impact of drilling operations.
Linear vibrating screens are often used in vibrating screens to effectively separate solid particles in drilling mud. These screens use linear motion to move drilling mud across the screen surface, allowing smaller particles to pass through while retaining larger particles. This process ensures that the drilling mud is free of debris, which is critical to the overall success of the drilling operation.
In addition to the linear vibrating screen, an elliptical double-track vibrating screen is also used in the vibrating screen to improve the efficiency of the separation process. These vibrating screens feature a dual-motion mechanism that combines linear and elliptical motion to effectively remove solids from drilling mud. Using an elliptical dual-track vibrating screen allows for more complete separation of cuttings, resulting in cleaner drilling mud and improved overall performance.
In addition, mud drying shakers and drilling fluid shakers are integral components of shale shakers and help improve the overall effectiveness of the solids control process. These screens and shakers are used in conjunction with linear shakers and elliptical twin-track shakers to ensure that drilling mud is properly processed and ready for reuse in drilling operations.
Overall, the use of various vibrating screens and vibrating screens in shale vibrating screens, such as linear mud vibrating screens and elliptical dual-track vibrating screens, is crucial for effective separation of solids from drilling mud. This process not only helps maintain the integrity of the drilling fluid but also minimizes the environmental impact of oil drilling operations. As the oil drilling industry continues to evolve, the importance of shale shakers and their associated shakers and shakers in ensuring the success and sustainability of drilling operations cannot be overstated.
With the continuous progress of mud vibrating screen production technology and screen production technology, at this stage in the field of solid control of oilfield drilling, double-layer mud vibrating screens and even three-layer mud vibrating screens began to appear, this mud vibrating screen is not simple increase of a layer or multi-layer screen, but from the vibration screen motor electric control screen box structure and other places to innovate and redesign. The purpose is to build the traditional mud solid control vibrating screen into an integrated mud separation equipment, replacing the traditional 3-stage solid control equipment (mud vibrating screen desander, desilter). The result is to greatly reduce the procurement and configuration costs of the solid control system, and improve the efficiency of drilling mud treatment.
Double-deck mud shaker First, look at the difference between 2 – and 3-layer screen mud shakers and traditional mud shakers. The overall volume of the double-layer mud vibrating screen and three-layer mud vibrating screen is much larger than the conventional mud vibrating screen, while the motor electronic control modular screen is much more advanced than the traditional mud vibrating screen, the entire equipment processing capacity is also powerful, which the mesh number of the screen through the layered structure to control the mud screening effect, a three-layer mud vibrating screen as an example, The mesh number of the upper, middle and lower layers of the screen is configured from large to small, and the treatment effect of each layer can achieve the treatment effect of the traditional solid control equipment.
Secondly, the improvement of the drilling process is also promoting the continuous upgrading of the mud vibrating screen, and the multi-layer mud vibrating screen has replaced the traditional solid control equipment, which has become a trend. The current drilling process requires solid control equipment and systems to be integrated and simplified, efficient, safe, and economical, and the emergence of multi-layer mud vibrating screens is in line with the current trend of drilling process improvement. It can be expected that multi-layer mud vibrating screens will become a trend to replace traditional solid control equipment.
The shaker screen is one of the most commonly used accessories on mud purification equipment, the role of the screen is through the high-speed vibration of the vibrating screen machine, and screening treatment of materials, to achieve the recycling of screening materials, often used in vibrating screen, cleaner, desander, desilter and other equipment supporting use.
The screening capacity and processing capacity of the vibrating screen have a direct relationship with the number of mesh of the vibrating screen cloth, which refers to the number of holes per square inch, the larger the mesh, the smaller the aperture, in general, the mesh X aperture (micron number)≈15000.
The size of the mesh determines the size of the screen aperture, and the size of the screen aperture determines the size of the largest particle of rock debris passed through the screen (we call it the sieve residue). The number of screen mesh we commonly use is 20,40,45,60,80,100,110,120,140,160,165,200 (unit is mesh), etc.
The common vibrating screen cloth types are divided into plate screen, wave screen, hook soft screen, and so on.
KOSUN can process various sizes of screens according to customer’s needs, and can also be adapted to Derrick, Brandt, Swaco, and other internationally renowned brands of shakers.
Due to the movement track, working parameters (amplitude, frequency, screen inclination, etc.), drilling fluid properties, particle wet-dry degree, particle shape (single particle, particle group), solid particles on the screen surface will form relatively static, forward sliding, reverse sliding, throwing motion and other forms of motion:
Relatively stationary, particles and particles maintain contact with the screen surface and move with the screen surface without relative movement.
In the forward sliding, the particles and particles remain in contact with the screen surface, while moving in the direction of the discharge direction relative to the screen face.
In reverse sliding, the particles and particles remain in contact with the screen surface and move in the direction of the reverse discharge of the screen surface.
In the throwing motion, particles and particles are thrown away from the screen surface and make a parabolic movement toward the discharge direction.
It should be pointed out that in order to make the drilling fluid shale shaker have both a larger capacity and a higher chip removal speed, solid particles should be thrown on the screen surface. Throwing motion can not only effectively improve the particle migration speed, but also effectively promote solid-liquid separation. In the process of throwing, the particles are transported to the discharge outlet, and the contact time and times with the screen surface are less, which greatly reduces the sifting penetration rate of small particles. However, it should be noted that the acceleration of the screen surface cannot be too large, as long as the solid particles can overcome the adhesion resistance between it and the drilling fluid and separate, the drilling fluid can be smoothly screened. Excessive normal phase acceleration will increase the impact of particles on the screen when falling, resulting in more chances for small particles to pass through the screen. Or due to the collision energy is too large, resulting in the crushing of large particles, so that the amount of sifting particles increases, but affects the removal of the solid phase. At the same time, the excessive normal phase acceleration also puts forward higher requirements for the strength of the vibrating screen. For a certain length of the screen, the fewer times the particles bounce on the screen surface, the shorter the time they stay on the screen surface, the lower the probability of passing through the mesh, and the more conducive it is to remove the small particles that adhere to the larger particles.
KOSUN- China Solids Control Leader&Drilling Waste Management Expert Email: sales2@adkosun.com WhatsApp/Wechat:+86 13379250593 Contact person: Stella Xiang Online consulting: http://www.kosun.com http://www.kosuneco.com
If the drilling mud is compared to blood, the shale shaker acts as a kidney. In that way, the shale shaker screen mesh is the necessary filtering component for the whole solid control system. Choose the right shaker screen mesh for your drilling slurry purified equipment, resulting in high efficiency of mud recovery and decreased drilling cost.
The shale shaker screen is used to achieve the screening and classification of materials. KOSUN shale shaker screens mesh is usually made of wire or other wear-resistant materials, with different apertures and mesh sizes to meet the screening needs of different particle sizes of materials.
shale shaker screen mesh
The main function of the shale shaker screen mesh is to filter and separate the material, to distinguish the coarse particles from the fine particles, and to achieve the screening of the material. Through the vibration movement of the shale shaker screen, the material moves and collides on the screen, and the larger particles of the material cannot pass through the aperture of the screen and are screened out, while the smaller particles of the material pass through the aperture of the screen.
The selection of shale shaker screen mesh should be determined according to the specific screening requirements and material characteristics. Different screen sizes and mesh sizes can meet the screening accuracy and yield requirements of different materials. Generally speaking, the smaller the screen aperture, the higher the screening accuracy, but the yield may be reduced accordingly; The larger the screen aperture, the higher the yield, and the screening accuracy may be reduced.
The shale shaker screen mesh also requires regular maintenance and replacement. With the increase of the use time and the wear of the material, there may be problems such as damage, fatigue, and blockage on the screen, which need to be repaired or replaced in time to ensure the normal operation and screening effect of the shale shaker screen.
KOSUN shale shaker screen mesh is compliant with the American API standards, featuring stable performance and mature technology. They offer high screening precision and can accurately separate particles of different sizes. During the screening process, the vibration and impact forces effectively prevent screen blockages, ensuring consistent screening performance. The screens have a simple structure, making installation and maintenance convenient, while reducing maintenance and replacement costs.
The shale shaker screens produced by KOSUN are compatible with internationally renowned brands such as Derrick, Brandt, and Swaco.
