KOSUN Customized Horizontal Decanter Centrifuge

KOSUN high speed, high performance horizontal decanter centrifuges are ruggedly built for industrial service and are especially effective in environmentally sensitive areas. With their robust construction and corrosion-resistant materials, KOSUN centrifuges provide long service lives and have low maintenance costs even in the toughest environments.

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.

The series of horizontal centrifuge by our company has been developed many years with the continuous improvement and optimization design, which possesses the characteristics of good result of separation and settlement, as well as large quantity, reliable work, longer life, lower energy consumption, easy maintenance, smooth operation, lower noises, etc.

Whether you are working toward maximizing barite recovery or looking to get the most out of your “zero-discharge” system, KOSUN field proven decanting centrifuges are a perfect choice. With units installed worldwide, KOSUN horizontal centrifuges can be found in almost every harsh environment, including Siberia, Saudi Arabia, and Brazil. Like all KOSUN products, each centrifuge package is customized to meet your specific needs. Designed by the oilfield for the oilfields.

Working Principle of KOSUN Vertical Cutting Dryer

As indispensable equipment in drilling waste management system, vertical centrifuge has been widely used in oilfield drilling plant for the purpose of environment protection as well as cost effective consideration. In this essay, we will mainly talk about the development background of vertical centrifuge, namely cuttings dryer and its brief working principle introduction.

Vertical Cutting Dryer is a continuous screen type centrifuge with automatic feed control designed for liquid-solid separation. The VC is designed to recover the liquid phase of the drilling fluid from drilled solids by exposing the latter to very high centrifugal acceleration forces which improve fluid separation from the drill cuttings. By further clarifying the costly liquid phase which can be returned to the active mud system, the machine helps save money on the expensive drilling fluids. In addition, it is designed and manufactured to work safely. This large high-speed rotating machine requires care and understanding for maximum safety. Unsafe practice in maintenance and operation will cause conditions, which are hazardous to both personnel and property.

VERTI-G Cuttings Dryers is a screened upright centrifuge that utilizes both centrifugal force and screening to minimize oil retained on the cuttings by forces of cohesion and capillary action. The basic components of the Vortex are shown below.

As shown in the figure above, cuttings enter the Vortex at the top of the unit and fall into the inner separation area. The conical screen basket within the unit rotates, producing an increasing G-force as the cuttings are forced downward and outward of up to 360 times the natural gravitational force (G-Force).  As associated mud separates from the cuttings under the induced gravitational forces within the unit, the openings in the screen (210-500μ) allows recovered fluid to pass through and exit the unit. To this step, the VC has finished its separation task from wet drilling cuttings. Then the recovery mud will further be transferred to high speed decanter centrifuge to be processed again.

Status of Oilfeild Drilling Fluid for Drilling Waste Management

In oil exploration and production, a lot of drilling waste would be left in drilling plant. These drilling waste are remaining in drilling plant pool. Due to incomplete processing of solids waste, a lot of rain erosion with leakage cesspool overflow, flooding and so on may cause pollution to groundwater and surface water. Meanwhile it would endanger the surrounding environment, and may even cause pollution accidents. In response to these harmful substances, how to take appropriate drilling waste treatment technology to minimize the environmental impact of waste drilling fluid damage is a very important issue to oil and gas drilling companies currently.


In recent years, although the domestic onshore oil and gas industry has made some efforts to deal with drilling waste management, there is still getting unobvious processing effect. Currently there is a big difference at home and abroad for the waste liquid treatment programs, no matter in technical solutions, equipment, and environmental investment and so on.

As traditional method, majority of domestic drilling companies handle the drilling waste in the waste storage pools by the mean of solidification at the end of the drilling. The specific method is as follow description. Under the reaction of gravity, the drilling waste in the pool is divided into liquid and sewage sludge. 1/3 of the liquid will be directly discharged and the remained 2/3 sewage sludge will be further processed by adding curing agent. This method is characteristic of high water amount and high amount of chemical agent waste. Nevertheless, the processing effect is not ideal or pollution risks can not be completely eliminated.

In the drilling waste management, KOSUN adopts the unique method to greatly improve waste disposal efficiency. Drilling waste get through drying, and then transferred by screw conveyor, the cuttings will be directly processed by the vertical centrifuge, which will effectively resolve the pollution problems to a great extent.

Common Faults and Reasons for Solids Control Equipment

As very crucial equipment in oil drilling and exploration, solids control equipment development trend in recent years is quite steady. Solids control system consists of kinds of units that installed on the surface of the mud tank, or inner room of the mud tank. Accounting from its high rate application frequency, solids control may easily break down and this is hard to prevent. In the following description, this essay will mainly discusses common faults and reasons as well as according solutions to resolve them.

Drilling mud agitator is one kind of unit that would easily break down in the mud processing. Probably reason caused this problem focuses on excessive load of mud agitator and caused non-continuous mud processing. This is because the unsatisfied performance of drilling mud on its density, viscosity and low efficiency power. This also can be caused by the incorrect maintenance and mixing methods. Thus, good operation of the unit is the assurance of high efficiency of the mud agitator.

Sometimes, desander and desilters may stop wording because of the complete block of the cyclone hopper. This is mainly because of the incorrect operation and damage of the shale screen. Or it’s because filtering screens are not installed on the water tap which is used to clean desander and desilter. So when install the tap, do make sure that it is fixed on the correct position and with all spare parts needed.

And mud lost is still a common faults in solids control processing. This may probably because the drilling mud feeding capacity is bigger than what the shale shaker needs, high density and viscosity of the drilling mud, fine mesh of the screen or many other wastes get into the drilling mud. These are all common problems caused drilling mud lost.

Vertical Basket for the KOSUN Vertical Cutting Dryer

Due to increasingly stringent environmental requirements around the world, the cost impact of drilling waste management for oil based drilling operations is steadily increasing. This puts a large focus on the ability to efficiently clean, transport, and dispose of cuttings, while maximizing fluids recovery. Historically, a successful waste management operation would require a large on site footprint, further increasing operator pad construction costs. As the importance of waste management increases throughout the industry it is necessary to have a solution that can continue to deliver field-proven results while reducing operator liability and cost.

Vertical Centrifuge improves overall cost-efficiency by recovering costly drilling fluid that is recovered from cuttings, as well as whole mud lost from shale shaker failure and rig motion. Further, the Vertical Cutting Dryer produce lower waste volume by generating dryer solids in both oil and synthetic-base drilling mud system. The reduced waste volume can in the turn dramatically reduce disposal cost.

The Vertical Basket Centrifuge operates under a discontinuous filtration process and is well suited to the efficient separation of Pharmaceutical products and of fine and bulk chemicals. This type of centrifuge is used with small batch sizes and where products are changed frequently with low process costs, this enables versatile usage for processing numerous products with one centrifuge There is no crystal breakage, as the peeling is performed at the reduced speed. They can handle freely and none freely filtering slurries with equal facility.

Rotofilt Vertical Basket centrifuges are built by making it easy to load from the top so that solids can then be extracted with knife or by hand. The equipment has been developed to operate the centrifuge with the exact same filter cake thickness as if it were a production size machine to enable gives a precise scale for each and every process from beginning to end.

Rotofilt Vertical Basket Centrifuge is ideally suited of: Amino acids, benzoic acid, benzene, hexachloride, calcium hypo chloride hexachlorocyclohexane insulin, potassium bisulphate, sodium perborate, penicillin, sulphur, starch, etc.

Drilling Mud Design Requirement Principles

Drilling mud solids control system is used to store, make up and recycle drilling mud in drilling, which is one of the most important system with drilling systems. Generally, it is composed of drilling mud shale shake, vacuum degasser, cyclone desander, cyclone desilter as well as decanter centrifuge and kinds of piping lines, and mud tank. There are still drilling mud supply device such as jet mud mixer, centrifugal pumps, shear pumps, oil pumps and mud agitator. In addition, aisle, ladder and guard bar are still the necessary device.

In drilling mud design requirement, relative solids control equipment is installed to remove harmful solids phase diameter bigger than 5-15 um and keep the useful solids phase, which is for the purpose of supporting good performance drilling mud for drilling. AS per SY/T6223-2005 requirement, detailed principles are described in the following essay.

1-1.25 times capacity of shale shaker, vacuum degasser, cyclone desander and cyclone desilter should be assured compared with the maximum capacity of drilling mud pump. Also, sand pump and motors are also set under this processing value. 1.05-1.1 times treading capacity should be assured as the maximum treating capacity of the drilling mud capacity.

Usually, mud tank effective volume should be 75% as the its total volume. There are some requirement of mud tank design.
1. Drilling mud tank is able to contain the maximum circulation value of the drilling mud in drilling.
2. According to design of drilling mud flow, overflow port and tube with bottom valve.
3. Whole strength is able to satisfy transfer, hanging as well as apply the drilling mud with 2.5 g/cm3 density drilling mud.
4. Sander discharge hole should be designed for each cabints.
5. All the seal device should be assured as oil resistant seal which suitable for all tye drilling mud.

Desilter Cyclone Working Flow and Matching Spare Parts

Cyclone is the main parts of drilling mud solids control desander and desilter. Generally, desander and desilter is mainly composed of cyclones and shaker base. There is one unit called mud cleaner which combines desander and desilter playing the common role of desilter and desander.

Most of the solids control manufacturers are able to produce cyclones in domestic solids control industries. Made of cast iron or PU material, desander and desilter are required to be abrasion resistance and are able to separate solids particles with D50, namely if D 50 is lower, the separation effect of desander and desilter is better. Do pay attention to the problems that separation points between desander and desilter should not be too far or too close. Generally, when the inner diameter is between 150mm and 300mm separation points between 74 and 44 um, it probably is desander. While when the inner diameter is between 100mm and 150mm separation points between 44 and 15um, it probably is desilter.

However, in practical drilling processing, desander and desilter are usually used by mistake on the solids phase diameter separation extent. Drilling mid is processed by desander again processed by desilter, which cause desilter doesn’t play the role of proper separation effect. This is account from the unqualified production level and standard and finally led to unsatisfied separating efficiency.

Base on the above described problem, many purchasers choose 2 drilling mud desander instead of one desander and one desilter. Even some users simply install one desander in the position of desilter installation. This is supposed to be improper practice. If two desanders are used by the same parameters, they should be set in parallel construction in case of emergency circulation. But reasonable assembly solution is one desander and one desilter are installed together with series connection. Above all, desilter and desander should be set with different extent of separation points.

Drilling Waste Treatment and Disposal Oilfield Drilling

General,drilling fluid is in the oil drilling process, the use of loop holes flushing medium, also known as the drilling fluid. The follwing are the drilling mainly function:

1.Cooling drill hole bottom clean with cuttings;
2.Lubricate drill;
3.When the stop drilling cuttings suspension, protect the hole wall to prevent collapse, balance the formation pressure, suppress the high-pressure gas-water layer;
4.Delivery of core, passing power machine for the hole bottom hole bottom rock crushing power needs, etc.


A direct impact on the performance of the drilling fluid drilling speed, mine safety, and reservoir protection plays an important role, a good drilling performance is an important guarantee for the smooth progress of drilling operations. Meanwhile, Waste oil exploration and development drilling fluid generated during the formation cuttings containing drilling fluid handling hazardous materials, etc., if the direct emissions on the environment and ecological cause great harm, safe disposal of drilling waste management fluids also important. Therefore, this article on oil drilling in the field of engineering technology and new applications of drilling fluid disposal techniques are analyzed.

Drilling waste is one of the main pollutants in the oil drilling industry of the world.In recent years, forced the world demand for energy, leading to increasing types of drilling fluids, additives and toxic ingredients are increasing, its composition is extremely complex. However, with the world to improve environmental protection requirements, sound drilling waste management has become a serious problem. This paper analyzes the composition of the waste from the drilling fluid and the harm to the environment, technology and methods for disposal of waste at home and abroad in recent years, various oilfield drilling were reviewed.

Screw Conveyer Usage in the Drilling Waste Management Equipment System

A screw conveyer or auger conveyer is a mechanism that uses a rotating helical screw blade, called a “flighting“, usually within a tube, to move liquid or granular materials. They are used in many bulk handling industries. Screw conveyors in modern industry are often used horizontally or at a slight incline as an efficient way to move semi-solid materials, including food waste, wood chips, aggregates, cereal grains, animal feed, boiler ash, meat, bone meal, municipal solid waste, and many others. The design of the conveyor is dependent on operating conditions, the type of transported material and its properties. Traffic enforcement can be controlled by changing the speed of propulsion.

Screw conveyers can be operated with the flow of materials inclined upward. When space allows, this is a very economical method of elevating and conveying. As the angle of inclination increases, the capacity of a given unit rapidly decreases. The rotating part of the conveyor is sometimes called simply an auger.

Features & Benefits
1. It has compact structure, small cross section, light weight, good sealing performance, highly efficient transportation, flexible technological layout, with ease of installation, dismantlement, motion and safe operation.
2. It is applicable to transport various kinds of soft materials such as powder, granular and small pieces of materials for example: clay, powder, pulverized coal, cement, sand, grain, small pieces of coal, cobble, cast iron filings, etc.
3. It is not applicable to transport materials that is of high viscosity and is easy to be curdled.

The waste produced by drilling operations, if not treated properly, will cause great harm to the envioronment, that is why more and more countries begin to set up regulations to minimize the oil on cuttings, so that the drill cuttings can be reused or discharged.

Screw conveyer, commonly known as auger. It has horizontal, inclined and combined form, and it can be used with other transport devices, to accomplish combined transport, separate transport, mixing, blending, dehydration, compounding, discharging and stacking, etc. KOSUN Screw Conveyer used in the drilling waste management for the drilling fluids or cuttings transportation. KOSUN Screw Conveyor is designed to offer an efficient, low cost, cuttings transport system for offshore and onshore drilling installations. The screw conveyors are manufactured to the highest safety standards and are fitted with protective grating or cover to prevent foreign bodies from entering the conveyor system, and to offer enhanced safety for all personnel.

Solids Separation Priciple about the KOSUN Drilling Mud Shale Shaker in Oilfeild Drilling Rig

Shale shakers are the primary solids separation tool on a rig. After returning to the surface of the well, the used drilling fluids flows directly to the shale shakers where it begins to be processed. Once processed by the shale shakers, the drilling fluids is sent into the mud tanks where other solids control equipment begin to remove the finer solids from it. The solids removed by the shale shaker are discharged out of the discharge port into a separate holding tank where they await further treatment or disposal.

      

Drilling fluid shale shaker is the first solids control equipment for the whole solids control solution system used in oil& gas drilling, CBM, HDD, environment protection and petrochemical as well as drilling waste management.Shale shakers are components of drilling equipment used in many industries, such as coal cleaning, mining, oil and gas drilling. They are considered to be the first phase of a solids control system on a drilling rig, they are used to remove large solids also called cuttings from the drilling fluids, more commonly called “ mud” due to its similar appearance.

Oilfield drilling shale shaker is the device that removes drill cuttings from the drilling fluids while circulating and drilling. There are many different designs and research into the best design constantly ongoing since solids control is vital in keeping down costs associated with the drilling fluids. The basic design consists of large, flat sheets of wire mesh screens or sieves of various mesh sizes that shakes or vibrates the drill cuttings. Commonly, in shale shaker, the drilling fluids flows across and off the screens and back into the drilling fluids processing system which is often called a mud system. This separates the drill cuttings, often called solids, from the drilling fluids so that it can be recirculated back down the well bore. In oilfield industry, linear motion shale shaker is widely used for drilling mud solids control of oil &gas well drilling for rig.

KOSUN High-speed Vertical Centrifuge can Maximum Separate the drilling Liquid/Solid

Vertical Centrifuge is a high-speed vertical dryer that achieves maximum liquids/solids separation in large-volume processing. Vertical cutting dryer gives operators a critical advantage in meeting increasingly stringent environmental regulations for onshore and offshore drilling waste management disposal.

Vertical Centrifuge uses centrifugal force to dry drilled solids in oil or synthetic base fluids. A stainless steel screen bowl traps “wet” solids and accelerates them up 900 RPM. Liquid is forced through the screen bowl openings, while “dry” solids are extracted by the angled flights attached to the cone, which rotate slightly slower than the bowl. Tungsten carbide protects the flights from abrasive solids and ensures long operational life. This aids in maintaining a constant gap between the scroll and screen bowl, which is crucial for proper operation. KOSUN Cutting Dryer has been done with strict balance testing for all major rotary components to minimize vibration & noisy.

High-speed Centrifuge for Maximum in Liquid/Solid Separation
The vertical centrifuge incorporates a high-speed vertical centrifuge that achieves maximum liquid/solid separation in large-volume processing. This mechanism makes the VERTI-G dryer one of the industry’s best performing and most dependable cutting dryers. The VERTI-G dryer gives operators a critical advantage in meeting increasingly stringent environmental rules for cuttings disposal. The flow of cuttings into the VERTI-G dryer is PLC-controlled and continuously fed to yield optimum liquid/ solid separation. Once cuttings are introduced into the dryer’s charge hopper, widely spaced, independently adjustable flights continuously direct cuttings to the shaker screen surface. Flights are tungsten carbide coated to reduce abrasion and ensure optimum tolerance.

The KOSUN Vertical Centrifuge returns and recycles large percentages of SBM ( Synthetic Base Mud ) and OBM ( Oil Base Mud ) to an active system which in the past was lost as waste products to the environment. KOSUN Vertical Centrifuge can reduce total discharged OOC below 6%, which is currently the discharge limit in many areas of the world, our goal is 5% total OBM discharge to the environment, and even further.

Advantage about AWD Angle Adjustment System for KOSUN Drilling Fluid Shale Shaker

Shale shaker is the primary solids control equipment that removes drill cuttings from the drilling fluids in drilling fluids purification system. After that, there are other equipment,such as, oilfield desander, drilling mud desilter, decanter centrifuge, drilling fluids degasser, etc. It can remove cuttings above 75μm brought from the drilling well and the liquid with smaller particles will flow into tanks from where the fluids will flow into next solids control equipment for further treatment. There are many different designs and research into the best design constantly ongoing since solids control is vital in keeping down costs associated with the drilling fluids.

Shale shakers typically consists of large, flat sheets of wire mesh screens or sieves of various mesh sizes that shake or vibrate the drill cuttings, commonly shale, across and out of the screens as the drilling fluid ( mud ) flows through them and back into the drilling fluids system. This separates the solid drill cuttings from the fluid so that it can be recirculated back down the wellbore. In oilfield industry, linear motion shale shakers are widely used.

KOSUN patented AWD angle adjustment system can raise or lower the end of shaker screen basket while the machine is working. This part includes two vertical column assemblies that are connected on the upper beam assembly and are attached to the mud shale shaker base. The mobile part of AWD consists of the lower beam, limiting device that controls vertical movement and screw rod that drives the upward and downward movement of the screen basket. Both ends of screw rod are hinged with the upper and lower beam assemblies respectively. Positive and negative rotating handles can make the screen basket move upward and downward respectively. The screen basket angle of solids control shale shaker can be arbitrarily adjusted within -1°~5° at an increment of 0.5°as required.

Basically, a shale shaker screen acts as a “go/no-go” gauge: either a particle is small enough to pass through the screen or it is not. Screening surfaces used in solids control equipment are generally made of multi-layered woven wire screen cloth and are the “heart and soul” of the shaker. Fundamentally, the quality of a shaker is defined by the quality of screens it utilizes. When selecting a solids control system, it is important that the quality of the screen manufacturing and experience in manufacturing screens is considered.

Some Advantages about KOSUN Oilfield Drilling Mud Decanter Centrifuge

In the field of oil & gas drilling, decanter centrifuge is the ideal choice for separating particles in drilling mud. As a Chinese solids control company, KOSUN can supply complete line of high-speed, variable-speed and fully variable-speed decanter centrifuge for handling drilling fluids.

Decanting centrifuge also named horizontal scroll discharge decanter centrifuge, it is an indispensable and beneficial solids control system separation equipment. Decanter centrifuge is the key equipment of dealing with the super-fine hazardous solid phase. Decanting cenrifuge can depart and recycle the solid phase larger than 2μm, recover the density of drilling fluids quickly and increase the drilling speed. Decanter centrifuge is the ideal oilfield drilling fluids purification equipment.

Decanter centrifuge is also a important equipment in solids control system. It is widely used in drilling waste. It is used in separating suspension of solid phase with particle diameter≥2μm for drilling mud and fluids handling.

1. It can operate at full speed to finish feeding, centrifugal sedimentation discharge and other procedures, high degree of automation.
2. It optimizes the settling zone parameters and feeding mode, enhances the centrifuge sand removing effect, performance can be comparable to the same specifications of the imported centrifuge.
3. Horizontal spiral unloading settlement centrifuge vibration is low noise. By improving the centrifuge rotational part machining accuracy and the dynamic balance accuracy, the centrifuge vibration and noise can drop to a low level.
4. The machine has large production capability, compact structure, small occupation, and can automatically run. It is convenient to maintain and can be closed operation.
5. Simplified solids control system, low energy consumption, lighter working load, and the purification efficiency increases by 30% than original.
6. It uses the frequency conversion governor, compared with similar products with low energy consumption, working speed is adjustable, etc.

Decanter centrifuge design consists of a solid container, called a bowl, which rotates at high speed. Inside the bowl tube, a screen conveyor rotates in the same direction, but at a slightly different speed. A differential gear is typically used to adjust speed.

Modern Application of Decanter Centrifuge in Drilling Mud System

A good quality decanter centrifuge should meet several features, such as anti-corrosive and anti-explosion. Actually, as the name implies, decanting centrifuge is used for separating something in drilling fluids, therefore, it should have excellent separation performance.

Much current drilling centrifuge application with drilling fluids is not only unproductive, but is counterproductive. One example of misuse is the practice of running two centrifuges in parallel to "recover the barite" with the first and "discard the drilled solids" with the second. The first stage is traditional centrifuging, returning the underflow to the active mud system. Rather than discarding the overflow, it is routed to the second centrifuge running at a higher speed, where the low-gravity solids supposedly are discarded and the "clean" liquid is returned to the mud.

Modern Application of Decanter Centrifuge
This process cannot, does not, and will not work! It is based on two erroneous assumptions:
1. the first centrifuge is capable of separating barite from low gravity solids;
2. the second centrifuge is capable of producing a solids-free liquid for return to the mud.

The centrifuge may be chosen according to the size and concentration of the strong particles within the suspension liquid or the drilling flare ignition device, density contrast of two liquids, the viscosity of the liquids, the qualities regarding the residue or the sediment, coupled with the separation requirement, at the same time, the requirements concerning the moisture content materials about the residue or the sediment and the clarity of the filtering liquid as well as the separated liquid will be taken into consideration to decide the choice of the centrifuge.

After that, the kind and the specification connected with the centrifuge might be determined and tested by thinking about the processing capacity and additionally automatic operation specifications. More often than not, the tiny or compressible particles inside the suspension liquid can employ the decanter centrifuge.

How is the desander working after the drilling mud shale shaker?

Desander removes sand size particles and larger drilled solids, which have passed through the shale shaker screen. These solids are discarded along with some liquid into the waste pit. The clean mud is then discharged into the next pit ready to be run through the desilter.

Desander include two 12-in.(305-mm) diameter polyurethane hydroclones slant mounted over the shale shaker. Each desander clone includes four replaceable wear resistant polyurethane sections that are joined together with quick release stainless steel clamps. The desander is furnished with an 8-in.(203-mm) diameter feed manifold and a 10-in (254-mm) diameter discharge manifold and a 0-60 psi (4.1-bar) pressure gauge. The desander also includes a solids discharge trough to distribute the hydrocyclone underflow evenly onto the screening surface.

Used desander of the Mission of Magnum with a cetain discharge to provide capacity and pressure to the desander, the Desilter and mud pump. The centrifugal sand pump through more than 10 years developed site applications and enhancements by the surplus of the KOSUN, is in the domestic advanced level, either in the technical performance or the seal life and reached the same level as the other similar products away.

KOSUN desander is a combination of cyclone desander and shale shaker of drilling fluids. The high chromium cast iron is used for hydrocyclone. The lower little shale shakers is elliptical. The vibration generator is driven by vibration motor, which makes the screen box keep a integral forward elliptical motion.

Adjustment and Maintenance for Shale Shaker in Drilling Fluid System

Shale shakers are considered by most of the drilling industry to be the most important device in the solid control system as the performance of the successive equipment directly relates to the cleanliness of the treated drilling fluid.

AWD angle adjustment system
The angle adjustment system while drilling, AWD for short, can raise or lower the screen basket end during the work. This part includes two vertical column assemblies that are connected on the upper column assembly and are attached to the shaker base.

The movable part of AWD consists of the lower column,limit device that controls vertical movement and hydro jack that drives the upward & downward movement of the screen basket. The fixed ends of jack are connected in upper column assemblies and the movable piston bar is fixed in the lower column assembly. Reciprocately pulling the operating grip of the hand pump or starting the oil return valve of the hand pump can make the screen basket move upward and downward respectively. The shaker screen basket can be adjusted within -1°～+5°. Fix and lock the elevator with clamp pin at the suitable angle, which can reduce the attack on the hydraulic pump when the basket is running at this angle.

Maintenance Plane
As usual, due to metal "hard in hard" cooperate relationship easy to lead to the shale shaker wear and tear on parts when it in the process of running, for example, the shale shaker main shaft bearing wear and failure. After go wrong the above problems, the traditional enterprise solution is machined after repair welding or brush plating to repair, but both of the ways have some disadvantages: repair welding of high temperature thermal stress can not completely eliminate, neither repair welding thermal stress effect, repair the thickness is not restricted, and at the same time the product of metal materials do not have rolled back, and it also can absorb the impact of shaker equipment, avoid the possibility of wear and tear, and greatly prolong the service life of equipment components, save a lot of downtime for the enterprises, creating huge economic value.

Application of Jet Mud Mixer in Drilling Fluid

Oilfield jet mud mixer is usually installed at the end of the complete solids control system, or we could say that it is a unit placed besides the mud tank and used together with the solids control system. Unlike shale shaker, mud cleaner and decanter centrifuge, it doesn’t separate the large solid particles from drilling mud. However, it is still not ignorable.

Benefits and Features of Drilling Fluid Jet Mud Mixer
1. Oil drilling mud jet mud mixer is a single jet mud mixer combined with 45 Kw (or 55 Kw) drilling mud centrifugal pump and a jet mud hopper or a double drilling mud jet mud mixer of two pumps and two hoppers.
2. The weighting hopper can be combined with a pump or be used independently with manifold valves with pump.
3. Put the drilling fluid materials (bentonites, barite powder) and the corresponding chemical additives (polymer) into drilling fluids circulation mud tank for increasing the total.

KOSUN series drilling fluid jet mud mixer is used to make and mix drilling fluid to change the density and viscosity. This device can satisfy the fluid weighting and mixing of drilling solids control system for 1500m-9000m drilling.The drilling flow into the jet pump with certain pressure, in the jet pump fluid spouts out from jet nozzle first, then flows into shear pipe through mixing chamber, material will be added from hopper to mixing hopper, and move into shear pipe with the flow. During this process, they are dispersed and mixed. The mixture will enter into mud tank when flows out of the shear pipe.

KOSUN can Design and Product the Good Mud Gun without Rusting Up and Blowing Out

The mud gun is installed inside the mud tank, hence the opening on the mud gun line would be inner the tank for simple connecting with mud gun terminals. Although, the clean water line has numerous opening on Mud Tank (Visit here to get a price list of the Mud Tank) major surface, the mud engineer would connect the water line by using a tap and control by a valve.

The mud gun line could be laid on each mud tank within the mud program in order that the mud might be transferred to each and every mud tank compartment. Always, the mud gun line would occupy 1 length and 1 width in the tank top rated structure steel tube, amongst different tanks, the mud gun line will be connected by hose. To prevent confusion, the mud gun line would be laid at same side on the mud tank, whilst the clean water line is selected because the counter sides.

In most drilling sites, there are always have a problem that the mud gun always tendency to rust up, plug up, blow out nozzles etc.But the mud gun in KOSUN can put the end to the occurrence of this kind of problem.Comparing traditional type,KOSUN may offer the client new type of mud guns,that is rotate style.The rotate mud gun is equipped with gate valve for better performance,and has a good command of nozzle pressure,whether the user connected mud gun to mud pump,or connected to feed pump.The rotation angle is 360°,that ensure no dead-end corner in mud tank and greatly enhance flushing effect.

KOSUN is an oil mud gun manufacturer and supply MG series mud gun. Mud gun is used to provide supplemental or primary mixing in mud tanks depending on the number being used and the pit size. Oil mud guns are best used in tank corners to keep solids from settling with a mud agitator placed in the tank center. The mud gun in the mud solids control system is also used to transfer mud from compartment to compartment, like for trip tank compartment.

AWD Angle Adjustment System of Drilling Mud Linear Motion Shale Shaker

Shale shaker is use to the vibrator excitation generated by the mutual screw sort vibration and work. Stator coil rotating hammer thereon plane whirl vibration sieve surface, whereas the rotating hammer build cone rotary vibration sieve surface, the result of the combined advanced sort rotary vibration sieve surface. Shale shaker could be a advanced area curve. Within the horizontal projection for a spherical of the curve, and within the vertical plane of projection is an oval. Change the higher and lower rotating hammer exciting force, will modification the amplitude. And change the area phase of higher and lower weight, you'll be able to modification the course of screen surface movement curve form and alter the direction of movement of screen surface materials.

AWD Angle Adjustment System of Drilling Mud Linear Motion Shale shaker
KOSUN proprietary AWD angle adjustment system will raise or lower the tip of screen basket whereas the machine is functioning. This half includes 2 vertical column assemblies that ar connected on the higher beam assembly and ar connected to the shaker base. The mobile a part of AWD consists of the lower beam, limiting device that controls vertical movement and screw rod that drives the upward and downward movement of the screen basket. each ends of screw rod ar hinged with the higher and lower beam assemblies severally. Positive and negative rotating handles will build the screen basket move upward and downward severally.


Drilling fluids are integral to the drilling method and among different functions, serve to lubricate and funky the drilling bit similarly as convey the trained cuttings far from the bore hole. These fluids ar a combination of varied chemicals in an exceedingly water or oil based mostly answer and may be very overpriced to create. For each environmental reasons and to cut back the value of drilling operations, lubricant losses ar reduced by uncovering them far from the trained cuttings before the cuttings ar disposed. This can be done employing a multitude of specialised machines and tanks.

KOSUN is capable of providing customers with such 3 series as oil & gas drilling solids control equipment, decanter centrifuges, shale shaker, mud gun, mud fomenter, vacuum degasser, jet mud mixer, mud cleaner, desander, desilter and drilling waste treatment equipment, together with twenty five classes of product, that are extensively utilized in oil & gas drilling and workover, coalbed paraffin drilling, shale gas drilling, water well, geothermic well drilling, trenchless horizontal directional crossing comes, mine gravel staged treatment, tailings treatment, rive dredging works, industrial sewer water treatment, environmentally friendly waste treatment, waste oil recovery, purification treatment, etc.