Introduction of the Main Equipment for Solid Control System

Recent years, with the requirement of high working efficiency in drilling industry, a new system has been designed and developed in some big solid control manufacturer, and the system is called “solid control system”. Kosun as the leading original manufacturer of solid control equipment and drilling waste management unit, the “solid control system” is not a problem for us.How to understand solid control system? As the professional solid control system manufacturer, we have our own understanding about this system.

Introduction of the Main Equipment for Solid Control System:

The first main equipment for solid control system should be the vacuum degasser,We could analytics from the function of vacuum degasser. Generally speaking, horizontal vacuum degasser will be used to separate the gas from the drilling solids. What’s the reason to do like that? Because we should do everything to prevent any dangerous elements in oil & gas drilling fields. That’s why we should put the vacuum degasser as the first role.

The second one should be mud cleaner. KOSUN MD Series Mud Cleaner is the second stage separation equipment for drilling fluids, which deals with the mud being treated by the first grade separation equipment. The barite will be recovered and cuttings which are bigger than barite will be removed. Then the barite in the underflow will flow into circulation tanks through the screens when the weighted mud passes while the particles that are bigger than mesh will be removed.

The third equipment, we think it should be shale shaker (with necessary steel frame shaker screen). Actually, after the drilling solids have been transported and fed into vacuum degasser and mud cleaner, the third step is going with shale shaker. Commonly, we still need to be transported the solids onto the shale shaker, or we could say onto the surface of shaker screen. The equipment of transporting we should use is centrifugal sand pump or screw pump; and we may use shear pump to cut the drilling solids into small one if they are in big size. With the different design of the shaker screen’s mesh, we could get the drilling solids separated in different sizes.

The fourth equipment should be the decanter centrifuge. KOSUN DC Series Decanter Centrifuge is used to separate suspended solids ≥2μm in diameter and treat the drilling mud and fluids. It is especially effective when used in oilfield service industry, industrial service industry and especially in environmentally sensitive areas. This type of centrifuge is high in recovery rate, effective in solids control and remarkable in the reduction of cost spent on drilling mud resupplying and management. It is a very sophisticated dynamic balancing machine, able to operate stably with the whirling speed ranging from 0 to 3900 and generate centrifugal force of 3000G. In solid control system, decanter centrifuge has been popularly used, which is also the popular one for drilling waste management. In this step, we could not only get the result of separating, but also we could separate the oil from the drilling solids, even if the oil is just a little part.

Of course, the whole equipment must be mounted on the top of drilling mud tank, which is a kind of basic equipment for both solid control system and drilling waste management (vertical cutting dryer is the core equipment for this system), but it is a kind of powerful equipment.

KOSUN was founded in Xi’an China in 1992. Up to now, KOSUN has formed a strategic layout integrating three centers and two industries. The Production, R&D and Domestic Sales Center is located in Xi’an China, the Overseas Project Management Center and International Trade Center in Beijing China and the Oilfield Services and Oilfield Engineering Center in Aktobe Kazakhstan in Central Asia. The two industries are traditional oil drilling solids control equipment manufacturing industry and integrated oil & gas drilling waste management service industry respectively.(Editor:Kosun Lily.Wang)

Kosun- Solid Control System Company

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Contact person: Lily Wang

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What is the Advantage and Disadvantage of Decanter Centrifuges

Decanter Centrifuges

Decanter Centrifuges  are   machines that are used in separating various densities in a liquid. The separating process is done very efficiently by a decanter centrifuge. There are many advantages and a few disadvantages as well of this equipment.

Decanter Centrifuges
Decanter Centrifuges

•    The appearance of Decanter centrifuges is clean and is almost odourless.
•    The decanter centrifuges device can be installed easily and is start up and    shutting process is very fast.
•    It needs minimum area for its operation.
•    The variety in size of the cylindrical bowl and the cone angle allows choosing various applications.
•    With different design curves the system is pre-programmed that calculates the type of sludge.  Due to its flexibility the machine has different functions like the operating for dewatering and thickening.
•     Compared to other smaller machines, the decanter centrifuge operates on a high throughput capacity that minimizes the requirement of units.
•    Its variety and reliability feedback option makes the decanter centrifuge easy to operate and effective.
•    The cost on labour has reduced as it does not require continuous attention for maintaining and operating.
•    The performance level of decanter centrifuge is much higher if compared to other competitive process.
•     For various industrial functions and processes decanter centrifuges are the perfect solution.

•    Biological solids with minute density cannot be separated by the decanter centrifuge. This is best done by the tubular bowl centrifuge.
•    At times the decanter centrifuge can be very noisy and also causes vibration.
•    Due to the high G-forces it consumes a large amount of energy.
•    The narrow range with changeable conditions limits the performance of the device.
•    Right type of sealing material should be selected that are both chemical and thermal resistant.
•    Compared to other varieties of centrifuges, the decanter centrifuge is cheaper.

KOSUN has many products: shale shaker , cutting dryer  , shaker screen , drilling waste management equipment ……

Kosun always been persisting in the two principles: one is Quality First and the other is Customer Oriented.

We are looking forward to your coming!

Horizontal Decanter Centrifuge – Operation and Maintenance

Horizontal Decanter Centrifuge

Horizontal decanter centrifuge is driven by two motors. The main motor drives the drum and the housing of the differential through the belt, and the auxiliary motor drives the auger after the differential speed. This will cause the drum and the auger to rotate in the same direction with a certain differential.

Drilling operations refers to the very process of extracting oil and gas from the earth for various commercial and industrial purposes. The industry is worth trillions of dollars today and is thus a very important part of any country’s development. In the past few decades, the demand for the products like gas and oil went up significantly. This led to a corresponding increase in the drilling activities all across the globe.

Like any other industrial activity, drilling too is bound to have some sort of waste produced as byproduct. This is termed as drilling waste and the term gained much popularity with the rising issues it caused to the environment. This in turn led to another class of waste management being introduced, known as drilling waste management . It involves several processes from maintenance, management and containment to subsequent handling and disposal of drilling waste promising better sustainability and conservation of environment.

Kosun Horizontal Decanter Centrifuge
Horizontal Decanter Centrifuge

In the various processes involves with drilling waste management , one important step is called waste maintenance. This was earlier done with conventional processes like settling and involves separation of the unwanted matter from the desired part and further storage and transportation. However, with advancements in technology and machinery, today the whole process id mechanized. The most popular equipment dedicated for the process is named decanter centrifuge .

As the name suggests, the machine uses centrifugal force to aid to the separation of waste matter. The machinery has a complicated design but with a very basic and simple concept. The mixed substance obtained directly from extraction is allowed to flow to a disc shaped structure. The disc is then rotated. This rotation calls the centrifugal and gravitational forces into action which facilitates the separation of drilling waste from the fuel. The fuel passes through the hole at the centre of the disk and the waste remaining in the structure is passed on for containment.

The equipment consists of moving parts and hence should be cleaned and kept smooth as possible to avoid reduction in efficiency. Also make sure to cut off the power to the machinery if it is to be dismantled for some purposes.

Drilling Decanter Centrifuge New Design of Kosun

Drilling Decanter Centrifuge

Drilling Decanter Centrifuge that is a machine based on centrifugal operation to separate different components is called a centrifuge.  Which is welcomed by domestic and foreign customers.

A settling centrifuge is a special type of centrifuge that separates solid components from liquids such as drilling waste .  Centrifugal force is the force that the object experiences when rotating at high speed. They are commonly used to separate components of different densities, such as water and solids.

drilling decanter centrifuge
drilling decanter centrifuge

Sedimentation centrifuges play an important role in wastewater treatment, chemical and food processing. The performance of the settling centrifuge depends on several different factors.

Sedimentation centrifuge

Most of the drilling and treatment plants deal with the mixture of components. They must be separated for further processing.

The main three types of settling centrifuges are used in industry:

2.vertical and

The settling centrifuge is essentially a bowl that is rotated at high speed to separate solids from the liquid matrix. In the case of a drilling industry, the input is a drilling waste .

Centrifuge is very easy to install and requires less maintenance. Even if skilled operators need to operate them, the decanter centrifuges help save a lot of money and improves the overall efficiency of the industry.

Centrifuge provides more flexibility and better feedback mechanisms. This allows the operator to allow the machine to work under different settings to separate the different parts. The space required to install the machine is very small, easy to start or shut down, allowing multiple units to work at once.

Decanter centrifuge is not without restrictions. The machine will produce a lot of noise and vibration. It can not separate biological components and has high energy consumption. The initial cost of setting up the machine is quite high. The rotating parts are also prone to wear and tear over time.

Operation and Maintenance of Vertical Centrifuge

Vertical Centrifuge

Vertical Centrifuge is very important machine for any oil or gas drillers. It enables them to perform drilling activities in a certain site. So, the operation and maintenance of a decanter centrifuge is a major issue for any drilling companies. In order to get the most of the benefit from a decanter centrifuge ,   it should be maintained and operated well. Here is a brief discussion about how decanter centrifuges should be operated and maintained.

vertical centrifuge

vertical centrifuge

The operating and maintaining process of a decanter centrifuge: The first thing that should be done to maintain a decanter centrifuge is to replace any hydraulic suction filter and replace hydraulic returns filter. It is a very important step for the oil and gas drillers.

As when the oil or gas drilling goes on both the hydraulic suction filter and the hydraulic returns filter undergo an extensive pressure.  So, there is a huge possibility of both of them to be worn out. So in that sense, both of the filters must be checked regularly and be replaced when it is necessary. Another important thing that is required to do in order to maintain a decanter centrifuge is greasing the machine.

It is very important. As decanter centrifuge is basically used in a heavy working areas, the machine can easily be stuck or jammed off. In order to avoid that, greasing is very important. Oil lubricated gear box greasing and recirculating oil greasing are two very effective methods for greasing.

A very significant task for managing decanter centrifuges are adjusting speed sensor to it. It is very important just because adjusting a speed sensor enables drillers to control the differential speed. Beside these above mentioned activities replacing hydraulic motor sensor, bowl belt replacement, scroll belt replacement and regulating the weir plate are some of the steps that should be taken to maintain a decanter centrifuge.

Drilling Decanter Centrifuge Work Principle

Drilling Decanter Centrifuge

Kosun Decanter centrifuge design is  designed for the drilling mud solids control and oilfield drilling waste management .

A machine which operates on the basis of centrifugal force to separate out different components is called a centrifuge. Centrifugal force is the force experienced by a body when it is rotated at high speed. They are normally used to separate out components of different densities such as water and solids. A decanter centrifuge is a special type of centrifuge that separates out solid components from liquids such as drilling waste.

Decanter centrifuge plays an important part in the process of wastewater treatment, chemical industries and food processors. The performance of a decanter centrifuge depends on several different factors.

drilling decanter centrifuge
drilling decanter centrifuge

Most of the drilling and treatment plants deal with a mixture of components. It is imperative to have them separated out for further treatment. Mainly three types of decanter centrifuges are employed in the industries: horizontal, vertical and conveyor. A decanter centrifuge is essentially a bowl that is rotated at high speeds to separate out solids from liquid base. In case of drilling industry the input is drilling waste.

Centrifuges are quite easy to install and require less maintenance. Even though skilled operators are required to operate them, decanter centrifuges helps in saving a lot of money and increases the overall efficiency of an industry. Centrifuges offer more flexibility and better feedback mechanism. This allows the operators to allow the machine to work at different settings to separate out different components. The space required for setting up the machine is very small and easy to start up or shut down, allowing more than one unit to work at a time.

Decanter centrifuges are also not without its limitations. The machines cause a lot of noise and vibration. It cannot separate biological components and has high energy consumption. The initial cost for setting up the machine is quite high. The rotating parts are also liable to wear and tear over time.

How to work Drilling Decanter Centrifuge?

Drilling Decanter Centrifuge

Drilling Decanter Centrifuge operates on the principle of centrifugal force. It is based on separation of material via buoyancy. The centrifugal force is applied for accelerated settling of solids by increasing g-force.

So a lot of components get covered in the working of a decanter centrifuge – g-force, accelerated centrifugal force, viscosity of fluid in which solids are submerged, speed of conveyers, density of different matters, feed rate, etc.

 drilling decanter centrifuge
drilling decanter centrifuge

Drilling Decanter Centrifuge  applied in solid control system of an oilfield drilling operation would typically be the last phase equipment in the process. The equipment will create high degree centrifugal force in the bowl to separate drilling fluid from the drilling waste .

The centrifugal force created by the centrifuge will contribute in this separation and the solid thus obtained will be carried through a conveyer that’s running at a different speed than the bowl, for further discharge. The g-force applied to the bowl will be anywhere between 1000 Gs to 4000 Gs.

The material to be filtered will be fed to the decanter centrifuge at a certain rate or speed, the bowl in which they are carried, will be set to rotate at a certain rate and inside the bowl, the conveyer will be running at different/slower speed to carry of the solids.

The rotations will generate centrifugal force inside the bowl that will force the drilling cutting to settle out and the fluid or mud will be collected in the center of the bowl for discharge.

As we know the actual output will greatly vary depending upon the earlier mentioned aspects, different designs and types will use different dimensions. The size of the decanter or the diameter, rotation per minute, limit of g-force, density of material, rate of feeding the material, and the differential speed of conveyer to carry separated solid for discharge.

All of these factors could be manipulated to achieve the desired output from the decanter centrifuge equipment. Another factor is for how long the material was stored or kept inside the bowl.

Séparateur centrifuge westfalia replacement from Kosun Manufacturer

Séparateur Centrifuge Westfalia

The Decanter Centrifuge Series offers an effective, low-maintenance solution for continuous liquid clarification and / or solid dewatering, with advanced process and mechanical properties.

The dewatering centrifuge is versatile and can be adapted to different    production and process and material types. The machine is easy to adjust, the operator’s attention is insufficient, relatively quiet, small footprint.

Horizontal decanter centrifuge uses a range of sizes to provide effective, low-maintenance solutions for liquid clarification and solid dewatering with advanced process and mechanical properties.

Séparateur centrifuge westfalia
Séparateur centrifuge westfalia

Centrifuge is the use of centrifugal force, separation of liquid and solid particles or liquid and liquid mixture of the components of the mechanical. The centrifuge is mainly used to separate the solid particles in the suspension from the liquid or to separate the two different densities and immiscible liquids in the emulsion (for example, to separate the cream from the milk);

It can also be used to exclude Wet solids in the liquid, such as washing clothes with wet clothes; special ultra-speed tube separator can also be separated from different density of gas mixture; the use of different density or particle size of solid particles in the liquid settling speed of different characteristics, some settlement The centrifuge can also classify the solid particles by density or particle size.

Kosun séparateur centrifuge has more than 20 years experience in manufacturing centrifugal separators. Today, the company has a leading position in the field of centrifugal separation technology.

Kosun separators represent superb product quality and excellent service levels. DIN lSO9001 quality certificate is sufficient to prove.

With the pace of industrial development, the company’s products from small separators to the development of a wide range of efficient separation machines and decanter for all walks of life to use.

Today, separation technology has been widely used in various fields such as beverage industry, dairy industry, oil processing, oil recovery, starch processing, chemical medicine, bioengineering, industrial fermentation and environmental protection projects.

Kosun dominates the international market for marine, energy, oil and industrial mineral oil separators. Provide the customer with the right system.

Drilling Decanter Centrifuge Good Performance by Kosun

Drilling Decanter Centrifuge

Drilling Decanter centrifuge equipment is used to serve the purpose. The equipment uses the centrifugal force to separate different materials for treatment.

Wherever there is a need to separate materials of different densities is involved, There are many types of centrifuges, decanter centrifuges , vertical centrifuge  etc.

Now building on this definition, we can imagine the vast application of such equipment in a variety of industrial scenarios, where different materials need to be separated. Let us pick oilfield drilling industry for an instance, where large volume of drilling waste is produced by the drilling process.

drilling decanter centrifuge
drilling decanter centrifuge

Not only the waste is harmful to the environment, if disposed directly without treatment, but it also contains large quantity of drilling fluid that needs to be extracted and restored. To accomplish this challenging task of separating the fluid, decanter centrifuges are deployed in drilling operations.

The working of a centrifuge could be understood as – If laid down in plain words – it uses the express rotation to separate different types of materials. In a more technical expression, a centrifuge is the equipment that uses the centrifugal force to separate substance based on their density using the principle of sedimentation.

Imagine a jar full of milk cream, when churned at good speed, it separates the cream into butter and skimmed milk. We know that different materials have different density, and the centrifugal force makes them move against the axis of the pit in which they are stored with the help of rapid rotations using mechanical force. Naturally the material with lowest density will make it way upward and the one with highest density will get settled at the bottom of the pit.

The decanter centrifuge equipment is used in a variety of machines that need to filter the mixture of solids and fluids. It finds it application in number of industries ranging from food processing industry to oil and natural gas industry.

Centrifuge Drilling Best Quality from Kosun Manufacturer

Centrifuge Drilling

The use of centrifugal principle for solid-liquid separation equipment, drilling fluid solid-phase control system is the last level of equipment.

For non-aggravating drilling cnetrifuge  is mainly used to remove the fine and harmful solid phase, the increase in drilling fluid is mainly used to remove excess colloid, control drilling fluid viscosity. It is also an effective equipment for handling drilling waste drilling fluids and preventing environmental pollution.

The electric motor drives the drum rotatably supported at both ends of the rolling bearing, and the drum drives the screw conveyor through the planetary differential and maintains a certain speed difference between the drum and the screw conveyor.

centrifuge drilling
centrifuge drilling


When the drilling fluid containing the solid particles is continuously fed into the machine from the feed pipe, the drilling fluid is accelerated in the screw shaft of the screw conveyor and flows from the inlet hole on the hollow shaft into the high speed rotating drum.


Optimized spiral structure for different applications
Through a large number of application results obtained from the experience
Material can be made of stainless steel, Hastelloy, titanium or nickel
Optimized wear protection for rough materials
Rugged design to meet harsh working conditions
Can be used for airtight and pressure operation
Heavy duty differential with a maximum torque of 120,000 Nm
OEM services are available worldwide

Decanter Centrifuge force, the drilling fluid in the drum to form a liquid ring layer, and the solid-liquid separation, coarse and heavier solid particles were thrown to the drum wall to form sediment layer, drum and conveyor .

There is a difference between the speed difference, sediment Was pushed by the conveyor to the small end of the drum, discharged from the slag discharge. The separated drilling fluid is discharged from the overflow port at the big end of the drum.