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The mud agitator is composed by explosion-proof electric machine, reducer,engine base and impeller components. The electric machine ,reducer and impeller shaft are connected with each other by solid couplings. 4 leaf blades were welded on each impeller.

Drilling fluid gun belongs to the water conservancy agitator equipment, its function is rely on high speed fluid which is produced from the gun nozzle, impacting the solid phase which in drilling fluid bottom storage tank and keep it suspension. After the agitator stop a period of time, the depositional solid phase bury the impellers, it is needed to restart, drilling fluid gun can eliminate a part of resistance distance when the agitator start, it can provide the reasonable guarantee for regular work of agiatator.

Operarting Principles: The impeller can stengthen the stirring effect by making vortex of the drilling fluid. The tray installed between the leaf blades can prevent the deposition of the solid particles when the machine stopped, thereby, to reduce the moment of resistance inflicted by the sediment to the impellers when restart the equipment, therefore, to avoid burnout of the machine.


The structure of drilling fluid gun

According the structure of drilling fluid gun, it is divided into stationary type and rotation type.

1 The stationary type drilling fluid gun is similar with water conservancy agitator which the tank has nozzles, but the drilling fluid gun is installed on the two diagonal which is from 200meter to the bottom tank, the nozzle direction is parallel the longitudinal tank wall of circulation tank.

2 The rotation type drilling fluid gun is divided into hand regulation and autorotation. The hand regulation agitator has two hinges, it is made of access tubes, shell, spray gun and the replaceable nozzle

The spray gun with the nozzles, rely on the two hinges, it can spurt any direction in the two perpendicular planes inside. The automatic rotary drilling fluid gun is made of input pipes, body gun, cross fitting, the two bends with nipples, replacement nozzle and two coat nots.

 The use of drilling fluid gun has a certain limitation, drilling fluid gun is auxiliary tool of mechanical mixing plant device, the mud gun can dispose the solid phase suspension which is didn’t disposed by mechanical agitator. According the research date, the depth of useful effect is only 1.5-2.7m, it is related with the drilling fluid density, viscosity and the speed nozzle.


1 The cost of drilling fluid gun is lower than mechanical agitator.

2 In the premise of meet the requirements of pump power can use the drilling pumps.

3 The flow can concentrate in a location to decrease or eliminate the dead zone.

4 The weight is lighter than mechanical agitator.

5 It can improve the rate of shearing.


1 If use along the drilling fluid system stir, it need a lot of drilling fluid guns, the cost of pumps and pipes is big.

3 The nozzle is abraded and let to high speed flow, it needs greater power, if the nozzle is not replaced in time, it may led to motor overload.

4 If solid phase have already precipitate, drilling fluid gun directly shot to the sediment, the sediment is maybe blocking the pump, conical shield or centrifugal.

To my surprise, on the morning September 3, I went to work, I have no attention to open my email, I found a inquiry email from Italy solid control company, he said they saw our products on alibaba, they were very interesting with our company, they want the inquiry with shale shaker, I excited to shout” I have inquiry”, this is the first inquiry from my work within the three month. I had very excited, after I send a price list to him, of course this is my first order, so the price is lower compared with the same industry of other companies, the client was satisfied with my inquiry, then he sent a detailed content with shale shaker, the main content is; they want a shale shaker mating with 3000 meters well, let us gave a suggestion for him, then the detailed content was sent to our technology engineer, the engineer patient and careful design, at last fished a reasonable and reliable scheme. On September 5, we sent the scheme to the Italy client, the client thought that there are some parts were didn’t matching the link way and terrain. Then we received the need and improved the scheme, at last the client was very satisfied with our service and scheme. He hope we can established business relations each other, we also hope we can have business communication.

This order is succeed, it give me confidence and patience, I believe that efforts will be fruitful.

Now, we have already manufacture the shale shakers, this is the process of manufacture which I took the pictures in the manufacturing shop.


TangShan Dachuan Mechanical Equipment Co., Ltd. is a company focuses on the production, sales and after-sales maintenance service of mud cleaning  equipment of petroleum drilling (not excavation). The main products are mud vibrating screen, vacuum degasser, desander, disilter, mud cleaner, mud gas seperator, mud agitator, desander pump, shear pump, centrifugal, flare lgnition device, mix funnel, jet mud mixer, mud tank, water tank, diesel tank, etc.



Mud gas separator is a special equipment of gas cut drilling fluid, it belongs to the ordinary pressure, it is the degassing theory of ordinary pressure, but it is the primary degassing equipment of disposed the gas cutting drilling fluid, the main distinguish with vacuum degasser is; it can remove the big bubbles which the diameter is bigger than 3mm. The big bubbles are refers to the swelling gas of the most drilling fluid is full of the well, their diameter are about 3-25mm.  This big bubbles can cause well kick, even erupt the surface of turntable. The gas liquid separator is mainly depend on the effect of gravity collision to realize the liquid and gas separate, the vacuum degasser use the principle of vacuum, flocculated flow and centrifuge, the quality of processing gas of vacuum degasser is less than the liquid gas separator, but it remove the gas more thoroughly. Usually the gas is processed by the liquid gas separator also have small bubbles, after through the shale shaker, it needs enter into the vacuum degasser to conventional gas.


The types of liquid gas separator

1 Cover type

The bottom of vacuum degasser is closed, drilling fluid through a U type pipes to return the circulation tank. The depth of drilling fluid in the degassing tank, it can control by the depth of the U type pipes.

2 Open bottom type

The separator have not bottom, the lower parts dive into the drilling fluid, the liquid level in the tank depends on the drive depth of bottom to control, this type of separator is called the “poor children” in foreign, it explains the simplification.

ZYQ Mud Gas Separator Parameters

TYPE ZYQ800 ZYQ1000 ZYQ1200
Separator Main Body 800mm 1000mm 1200mm
Thruput 200~260m3/h 240~300m3/h 280~360m3/h
Inlet Pipe 5″ 5″ 5″
Outlet Pipe 8″ 8″ 10″
Exhaust Pipe 8″ 8″ 8″
Weight 1600kg 2100kg 2800kg
Overall Dimension 1900×1900×5700mm 2000×2000×5860mm 2200×2200×6634mm

The most simple and reasonable liquid gas separator is the cover types. The open bottom types is take second place, because the depth of drilling fluid is limited to the liquid level depth in circulation tank. The working pressure of liquid gas separator is equal to the frictional drag of when the free gas discharge tubes discharge.

Hydrocyclone is a kind of mechanical separation equipment with simple and easy to maintain. Separation is realized by the admission energy change into the interior barrel centrifugal force. The centrifugal force act on drilling fluid, make drilling cuttings and other solid phase separated, this is follow Joe hicks’s law. Because the drilling cutting is too fine in some strata drilling, drilling fluid shale shaker can’t remove the drilling cuttings, so must use hydrocyclone remove the most of particles. Drilling fluid shale shaker avoid the big particles enter into the hydrocyclone and led to blocking, protect the hydrocyclone.

The best separate effect of hydrocyclone is the least liquid loss, obtain the maximum drilling fluid solid phase to discharge. The small and light particles are discharged through the overflow month. The biggest effect to the performance of hydrocyclong is the diameter, cone Angle, the diameter of bottom month, the pressure of admission, the model form viscosity of admission.


1 The device is compact, the structure is simple, the price is cheap, have no movement     parts

2 The throughput is big, the range of separation is large.

3 Adjustment and operation is easy, and it is easy to maintain.

4 The ability of separation is great, in some cases, can obtain the overflow of more fine and the higher of separative efficiency.

The shortcomings of hydrocyclone

1 The power consumption is big

2 When the viscosity of the pulp, the density of solid phase and the composition of particles size are changed, the separation particle size and separation effect is changes.

3 The working condition of desander pump is greatly influenced the hydrocyclone.

4 It can’t carry out super fine separation. It can’t disposed flocculating substance

Centrifugal pump

Type; DCSB

Brand; DC

Characteristics; the centrifugal pump is our company is easy to operate and maintain, the quality of leakage rate of shaft seal is little, working is reliable, the using lifetime is long.

The centrifugal pump of Tangshan DC company is a ideal equipment to provide power to Desander, Desilter and jet mud mixer, SB series centrifugal pump also as infusion pump of mud pump and the wellhead supply pump. The product centrifugal pump of our company is fully consider the mating equipment can work under the best condition. The SB series horizontal type centrifugal pump use the two-way grease lubrication bearing, it can guarantee normal running with long time. According the requirements of customers, the pump can also use the machine oil lubrication bearing.

Parameters under 50HZ

Type Flow Lift Power Rotate speed Efficiency NPSH
SB8x6-14 320 m3/h 40 m 75kw 1480 rpm 65% 4
SB8x6-13 290 m3/h 33 m 55kw 1480 rpm 64% 4.5
SB6x5-13 180 m3/h 34 m 45kw 1470 rpm 60% 3
SB6x5-12 160 m3/h 30 m 37kw 1470 rpm 60% 3
SB6x5-11 200 m3/h 21 m 30kw 1470 rpm 62% 2.5
SB5x4-12 90 m3/h 30 m 22kw 1460 rpm 56% 4.5
SB4x3-13 50 m3/h 40 m 15kw 1460 rpm 48% 4.5
SB4x3-12 45 m3/h 30 m 11kw 1460 rpm 47% 4
SB3x2-12 23 m3/h 29 m 7.5kw 1450 rpm 39% 4

Parameters under 60Hz

Type Flow Lift Power Rotate speed Efficiency NPSH
SB8x6-12 335 m3/h 43 m 75kw 1750 rpm 66% 4.8
SB6x5-12 196 m3/h 48 m 55kw 1750 rpm 61% 3
SB5x4-14 149 m3/h 61 m 45kw 1750 rpm 58% 4.6
SB5x4-12 120 m3/h 40 m 37kw 1750 rpm 56% 4.6
SB5x4-11 112 m3/h 45 m 30kw 1750 rpm 58% 4.2
SB5x4-10 105 m3/h 30 m 22kw 1750 rpm 57% 4
SB4x3-11 55 m3/h 45 m 15kw 1750 rpm 37% 4
SB3x2-12 28 m3/h 45 m 11kw 1750 rpm 40% 3.1
SB3x2-11 25 m3/h 35 m 7.5kw 1750 rpm 41% 3.1

Construction:The DCSB centrifugal pump adopts the axial inhaled structure, composed by the motor and pump head, connected by the coupling and belt, with the technical of mechanical seal and combination seal construction, to ensure no leakage for more than 1 year. The bearing is lubricated by lubrication oil and grease, to lengthening the lifetime of the centrifugal Pump. The centrifugal pump has two types, horizontal centrifugal Pump and vertical pump.

Welcome to our company to visit and investigate of at home and abroad


Centrifugal is a kind of solid control equipment. It can remove the particles which the diameter is bigger than 10um.

Maybe you are strange, why we not use other as the main equipment to remove particles.

The oil centrifugal is limited by the feed rate, solid discharge and ect. So it can’t disposed the whole mud solid, the best way is put the shale shaker or hydrocyclone centrifugal upstream, in order to rid of the bigger solid particles, the centrifugal remove the small part particles, the shale shaker and hydrocyclone separator can’t remove the most part of particles. According this method, you can effectively remove particles.

How remove the solid in drilling fluid of the oil centrifugal alone?

Drilling fluid mud is into high rotation speed, create 1000G at least. Then attack the centrifugal force, solid and drilling fluid mud is separated.

How work of the oil centrifugal?

Through the feed pipe enter into the conveyor, then mud through the feed port enter into conveyor belt and exit the central, with the high rotation speed of bowl, drilling fluid mud exposure the high force, led to the liquid and solid separation.



1 Solid phase total

Solid phase refers to the solventless solid in drilling fluid. Usually the solventless solid in drilling fluid use percent by volume to express. The high density drilling fluid solid phase content consist of low density solid phase and high density solid phase, but the common drilling fluid solid phase content is all the low density solid phase.

2 Liquid phase

In drilling fluid, use liquid as dispersion solid phase continuity, it is called liquid phase. Usually, water, oil, soluble salt, thinner and other produce included.

3 Low density solid phase

The low density solid phase is including commercial clay and drilling cuttings. Usually, in the solid control work, assume that the density is 2.6/cm3 or 2.65g/cm3, the actual value in the 2.0-3.0cm3 fluctuation.

4 High density solid phase

The high density solid phase improves the density of the drilling fluid, make the annulus fluid column pressure is greater than the formation pressure. The barites is a kind of high density solid phase, the barites density is recommended by American petroleum institute is bigger than 4.2/cm3.

5 Aggravate drilling fluid

The commonly known as aggravate mud, the common aggravate materials is barites, according to requirements also can use other aggravate materials, in order to keep the minimum density.

6 Drilling cuttings

Drilling cutting belongs to solid phase, it is the main pollution source of drilling fluid. It is greatly affected the performance of drilling fluid, so must make the content is stably, so have the important issues, in the process of drilling should do regular treatment to keep the content is stably of drilling cuttings.

7 The clay

The clay is mainly made of clay minerals, the form is the super fine particles, most diameters is less than 2um, it has dispersibility in water, charged sexual, ion exchange, these performance is important to drilling fluid.

8 Colloid particles

The clay diameter of solid particles is less than 2um is called particles, the material of clay particles have a big surface area. Sodium montmorillonite can shape clay suspension in water, the dispersibility of the sodium montmorillonite is good, it can improve the viscosity of drilling fluid.

9 Oil base and water base drilling fluid

The oil base drilling fluid base on oil as continuous phase, the insoluble solid phase particles is scattered to the continuity liquid phase; Water base drilling fluid base on water as continuous phase.

10 saturated brine

saturated brine is allocated by sodium chloride, the density is 1.20/cm3



Drilling fluid is classified as water base utilizing water as the liquid phase. The solid phase of any drilling fluid is either commercial solids or drilled solids. Most commercial solids such as bentonite have a relative particle size of less than one micron. The shale shaker, in various forms, has played prominent role in oilfield solids control schemes for several decades. Shakers have evolved from small, relatively simple devices capable of running only the coarsest screens to the models of today. Modern, high-performance shakers of today 。

Shale Shaker Parameters

TYPE DCS585-3/4 DCS630-3 DCS700-3/4 DCS830-2/3
Shake Locus linear type or ellipse type
Motor Power 2×1.5/1.72KW 2×1.5KW 2×1.5/1.72KW 2×1.3/1.72KW
Shake Strength ≤7.0G
Amplitude 5~6mm
Thruput Per Screen 100/130 m3/h 440/572GPM 120 m3/h 528GPM 110/130 m3/h 440/572GPM 80/130 m3/h 352/528GPM
Angle Of Screen -1°~5°
Motor frequency and voltage 380V/50HZ(Foreign custom motor according to customer requirements)
Screen Area 2/2.73 m2 2.36m2 2.2/2.94m2 1.8/2.7m2
Screen Specification 585×1165mm (40~250) 630×1250mm (40~250) 700×1050mm (40~250) 830×1080mm (40~250)
Remarks The proportion of thruput per screen in the total amount is:1.2g/cm3,the viscosity is:45s

DC designs, manufacture and operate a complete line of advanced balanced-elliptical and linear-motion shakers for all onshore and offshore applications.  Whether used as scalping, primary or stand-alone units, our high-capacity shale shakers deliver unmatched solids removal.  All of our shakers are available for sell or rental.


1 The motor of the shale shaker use the vibration motor of import in Italy, the excite of vibration motor can adjust.

2 The screening area of the screen is big, the throughput is large, the effect of the treatment is good.

3 the shale shaker designed with the solidwordks ansys, the structure is optimization, the structure of the shale shaker is simple, compact, the performance is excellent and cost-effective

4 the screen of the shale shaker is the agglutinate screen edge rigidity, use the plate type close fixed, is convenient and quick to replace.

5 the design is reasonable, make the mud buffer, average flow, reduce the directly impact, the life of the screen is long.

6 The shale shaker use the ratchet wheel lift, the structure of lift is easy and easy to operate.

Welcome to inquire drilling fluid shale shaker of DC mud cleaning equipment , and welcome to visit and negotiate the business both at home and abroad ; Our company will provide for you the best shale shaker and other equipment related solid control with superior quality and most reasonable Price. And we will sincerely offer our best service to satisfy what you need.


Solid control system is mainly made of a group of store drilling fluid solid control tank and a group of equipment which rid of the solid phase in drilling fluid, solid control tanks which store drilling fluid are divided into circulating tanks and store tanks. Circulating tanks as a part of the ground cycle, there are shale shaker, vacuum degasser, deserter, desande and centrifugal on the surface of tank. The store tank is according to the need of drilling condition to allocated the different performance drilling fluid, or store drilling fluid which used for different drilling condition.

The purification process

1 level1 purification

The mud disposed in shale shaker. The allocation drilling fluid enter into the bottom well under the foundation of the drilling pump and carry drilling cuttings return the ground, through the elevated tubes enter into the shale shaker, the larger rock debris in drilling fluid are screened

2 level 2purification

When drilling fluid have gas cutting, we can use vacuum degasser remove the gas which in the drilling fluid and can recovery the density of drilling fluid, steady the drilling fluid viscosity.

3 level 3purification

The drilling fluid is disposed by the 2level purification enter into the desander through the desander feed liquid pump, the harmful sold phase which the diameter is above 40-60um is separated in desander.

4 level 4purification

The drilling fluid is disposed by the 3level purification enter into the desilter through the desilter feed liquid pump, the harmful sold phase which the diameter is above 15-40um is separated in desilter.

5level 5purification

The drilling is disposed by the 4level purification enter into the centrifugal through the centrifugal feed liquid pump, the small harmful sold phase particles are separated in centrifugal.

Usually, the 5purification is working at the same time. If it works one equipment or several equipments, the parameters of the drilling fluid can meet the work requirements, it can work one equipment or several equipments. After the purification, drilling fluid can enter into the next common drilling cycle.

Now, abroad strengthen the research of the throughput and the speed of the centrifugal, increase the separation factors of the centrifugal, the most of the material of the centrifugal use the stainless steel, increase the corrosive. in order to increase the throughput of the centrifugal, improve the separation factors, a lot of details are amended and innovated.

The sand removing effect of many domestic centrifugal, because the separation factors is small, the separation of many foreign manufacturing is with in500-1000, it is appropriate for fresh water drilling fluid, overall vibration of the centrifugal is big, there are two main reasons;

1 The solid phase in the drum is not washed, have a part of residual sediment, destroyed the balance.

2 The bearing is abraded, the revolve of the drum is unbalance, the throughput of the centrifugal can’t reach the design requirements, the life time is lower recognition of the manufacture.

From the view of the reaction, we need a kind of centrifugal with large displacement, frequency control and speed regulation, so it can aggravate the drilling fluid and dispose the not aggravate drilling fluid. This kind of centrifugal is called all-around centrifugal, the whole system is frequency control and speed regulation, the rotation of speed can be regulated, the most high speed is above 3000r/min, as a high speed centrifugal , the separation factors F1 can reach 3050, as the mass flow centrifugal, the biggest through put is 100m3/h.


DCLW horizontal type helical-conveyer centrifuge is a mechine to separate the soild particles and liquid or separate the liquid and mixture mixed in the liquid by centrifugal force. The main function of centrifuge is to separate the liquid and solid particles in the suspension, or to separate the two kind of different liquid with different density which can not dissolve in each other in the emulsion. And also, can be used to remove the liquid from the mixture of liquid and solid. Some sedimentation centrifuge also can classificate the solid particles in the fluid with different density or granularity by identify the different sedimentation velocities.

DCLW horizontal type helical-conveyer centrifuge is special for theseparation of liquid and solid in oil drilling fluid, can finish the percedure of feeding, centrifuge sedimentation, unloading when it is fully operated. The main function is to recover the barite, clean the small solid, decrease the quantity of solid in the fluid, control the density and viscosity of drilling fluid to guarantee a good performance of the fluid.

The centrifuge is widely used in chemical industry, oil mining, food industry, pharmacy, minerals, coal mining, water treatment and shipping.

LW Centrifuge Parameters

TYPE DCLW450-842N DCLW450-1000N DCLW600-1019N DCLW700-1200N
Drum Diameter mm 450 450 600 700
Drum length mm 842 1000 1019 1200
Drum Rotate Speed r/min 2200 2000 1800 1500
Separation Factor 870 860 850 823
Separation Point μm 5~7
Motor Power(Main) 22kw 30kw 45kw 55kw
Motor Power (Vice) 5.5kw 7.5kw 7.5kw 11kw
Power Of Fluid Supply Pump 5.5KW 5.5KW 7.5kw 11kw
Maxmum Thruput m3/h3/h 40 40 60 90
Weight kg 2800 3000 3600 4300
Size mm 2450×1750×1350 2600×1750×1350 2900×1600×900 3100×1700×950

GLW Centrifuge Parameters

TYPE DCGLW250-980N DCGLW355-1257N DCGLW450X1258N DCGLW600X1200N
Drum Diameter mm 250 355 450 600
Drum Length mm 980 1257 1258 1200
Drum Rotate Speed r/min 3500 3200 3000 2600
Separation Factor 2607 2035 2260 2550
Separation Point μm 2~5
Motor Power (Main) 11kw 37kw 37kw 45kw
Motor Power (Vice) 7.5kw 11kw 11kw
Power Of Fluid Supply Pump 2.2KW 5.5KW 7.5kw 11kw
Maxmum Thruput m3/h3/h 20 35 45 90
Weight kg 1000 2950 3100 4300
SIZE mm 1900×1200 ×800 2900×1850×1400 2900×1900×1450 3200×1600×900

Note:DCGLW centrifuge can be made with power frequency or frequency conversion according to the requirement of the customers.