Tag Archives: Desander

Desilter is a third separation equipment of solid control system, which also can be used in building construction fields. Recent days, DC Machinery shipped 6 sets desilter to foreign clients used in building construction fields.

Usually the cone diameter is less than 6″is called Desilter. We commonly used 5 “and 4″ cone to separate solid-phase particle size 15-47μm in the drilling fluid. Based on customer requirements and capacity, we can select groups of cone into Desilter.


DC Mud Desilter Features & Benefits
1. 100% Polyurethane(PU) Material for desilter cones with longer using life
2. Clamp type for easy maintenance
3. Compact design with small footprint.
4. Flexible fast connection are available for user friendly assembly.
5. Shutoff stainless steel ball valves available for option on each cone inlet permit individual cone removal and inspection without interrupting operation of the desilter.

You are welcome to contact with us to get more detailed infos of desilters, we will supply cost-effective desilters and satisfactory pre-sale, sale and after-sale technical services.

DC Solid control is a professional manufacture of drilling mud cleaning equipment for overseas market. DC Solid control equipment have taken lots of drilling site in Middle East, Africa, Russia, America, Brazil, Australia etc.

The main product of DC Solids Control equipment including: shale shaker, shaker screen, mud cleaner, desander, desilter, decanter centrifuge, mud agitator, mud gun, centrifugal pump, screw pump, vertical cuttings dryer, screw conveyor, High G drying shaker etc.

At present, DC solid control has 2 sets mud cleaner and matching hydrocyclone prepared to shiped to overseas market.

The mud cleaner we offer to them, with below technical specifications:

Model: DCQJ250X1/100X8
Treating Capacity: 120m3/h (528GPM).
Hydrocyclone specification: 10″x1/4″x8.
Matching Shaker: DCS630-3 linear motion shale shakers.


The manufacture progress is as per international Standard. After all assembly finish, test with bentonite fluid. All connections and welding points no leakage, and shale shaker works well.


Except for mud cleaner, we export large quantity of matching hydrocyclone for the same users. You are welcome to call Dachuan Machinery to get more infos about the mud cleaner and we are appreciated to supply the cost-effective products and service for you.

The development of shale shaker is fast growing in the trenchless drilling fields, and which is different in oil and gas drilling. And many shale shaker composite with hydrocyclone to consitute drilling mud cleaner.

1. Microtunnelling

Microtunnelling project is widely used in Europe. Microtunnelling is a kind of big hole horizontal drilling. which is famous used in city construction and pipe laying or replaced. In preparation for the construction, firstly digging a big diameter and vertical well or well-sinking to convenient to drilling equipment and hydraulic machine. The location of well-sinking is slightly lower than equipment level, so that when drilling fluid return back will forming a settling pond that is good for removing solid phase. The drilling fluid pumped to the ground will pumped to a simple solid phase cleaning system by a submerged pump, this system is mainly consist of a set shale shaker and a mud cleaner.

shale shaker

2. River crossing

In order to lay pipeline in the river bottom, need to drill a small well hole on the riverbed. When laying the big size pipeline, we must use recombination shale shaker, desander, desilter and centrifuge to build a strong solid control system. Drilling mud cleaning equipment reduce the cost of drilling waste.

shale shaker1

3. Road crossing

Laying pipeline and cable required to through the below of the road, when road drilling can’t affect the traffic, nor destroy the road. Usually this drilling size is very small to avoid using solid phase cleaning equipment. If when drilling fluid is accumulation, drilling size is too big or road base is wide must use shale shaker or drilling fluid cleaner.

4. Fibre-optic(al) cable

The laying of fibre-optical cable need no drill bid well hole, but because of often drilling in residential area or commercial district produce the drilling fluid and solid phase must be put into the special device, this solid control system only includes a storage tank , a set of pump box and a minitype shale shaker.


Exhibition is the best purchase, sales and propaganda platform of a company, a manufacturer.

On September 17, 2012, Tangshan Dachuan Machinery co.,ltd. Took part in the offshore, oil and gas technology, equipment exhibition of Dong ying. There were a lot of companies in the exhibition, for example, Shengli oil field petroleum equipment co.,ltd. Rong li petro leum machinery and Jin sheng yuan solid control company and so on . The bigger exhibition hall is Jin sheng yuan solid control company. There is a shale shaker, a mud cleaner and several hydrocyclones in the exhibition hall.


The salesman of the company and I talked about one hour, I understood the main marketings and the sales model of the company, I studied the sales methods and the keys with the excellent salesman, and exchanged the sales experiences and realized.

Because the time is short, so our company can’t order the exhibition hall, but according our studies and observation, we got a lot of valuable knowledge and experiences, and meet a lot of foreign friends, there are Mark joony, Duanie A. priestley and Allen B.Kilback and so on.


DuanieA.Prestley was very interested with our centrifugal, and detailed understand the centrifugal of DC manufacturer with the technical engineer, he hoped establish business relations with us. And we leave the contact information each other.

Form the exhibition, I learned that the main of sales are daring to open, and I hope according about 6 months to exercise, the next time,  Beijing exhibition, my sales model and the spoken language are improve.

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



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.


DCLW horizontal type helical-conveyer centrifugal 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 centrifugal 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.


The foundation of the centrifugal

There are two reason to use the centrifugal that in the process of maintenance the drilling fluid

1It can selective separation the colloid particles and superfine particles in the aggravated drilling fluid, in order to improve the flow property of the drilling fluid.

2 It can eliminate the small particles in the aggravated.

 The centrifugal can recover the large size aggravated solid phase which is more valuable. If don’t use the centrifugal, in order to reduce the density of superfine particles, we have to discard all the drilling fluid, even if the drilling fluid have a large of valuable aggravated solid phase.

We need to notice that the mud cleaner and centrifugal all can remove the drilling cuttings and recover most of the barites. But the two equipments removed the size particles are different. The mud cleaner can remove the big particles size of drilling fluid, but the centrifugal only can remove the small size of drilling fluid. Their foundation can complement each other, the density of the drilling fluid is bigger than 1.80cm3, it is better to use the two equipments,

The classify of the centrifugal;

the separation factor of low speed centrifugal is 500-700, the rotate speed is 1600-1800r/min, the separation factor of the medium speed centrifugal is 700-1200, the rotate speed is 1800-2200r/min. the separation factor of the high speed centrifugal is 1200-2100, the rotate speed is 2200-3000r/min

The treatment separation of the mud cleaner by the large of drilling cuttings from the well, so that, mud enter into the next separation equipment, the performance and using of mud cleaner are directly influence the next using effect of the separation equipment. The screen is according to the vibration theory of the liner motion ‘s movement locus to designed, the exciter make the screen box do back and forth movement, the solid particles in the mud is sifted out from the surface, to achieve the purpose of the solid and liquid separation.

The use and maintenance of the drilling fluid mud cleaner

1 The method of use

The correct install and use of the multifunction cyclone mud cleaner can rid of the harmful solid phase effectively in the drilling fluid, control the viscosity, recover the useful solid phase, it has important significance to extend the life time of the mud cleaner and reduce the labor intensity of the field workers.

(1)The multifunction cyclone is installed behind the shale shaker and above the one and two drilling fluid tanks.

(2) The drilling fluid which into the mud cleaner must processed by the shale shaker.

(3) Plugged, after the motor starting, the direction of rotation of the motor and the direction of the sign of belt cover must be consistent.

(4) Firstly, air transportation the rotating shale shaker, then check up it, if found has unusual noise, we should stop to overhaul.

(5) Tightenting the screen, pressuring the spiral, testing pressure the screen by hand, then test running 2-3min, the screen should not have separate oneself from the strip, then appropriate pressure the spirals, inspecting the each tensioning spring, the length should be basically same.

(6) In the process of the using screen, if we need to clean the cumulative sand on the screen, we can’t use spade to sweep the screen.

(7) we should wash the screen at least per shift, prevent the viscous things or sand on the screen are maybe blocked the mesh, influence the screen normal use.

(8)When stop to use it , we should closed sand pump firstly, keep the shale shaker rotating 3-5min and wash the screen in time to keep the screen clean, the closed the shale shaker.

(9)we should Infusing butter on the bearing of the exciter once a day at least.

(10)In the process of transportation or lifting, we can’t put the hard things on the screen or trample by foot.

(11)preventing the sundry enter into the swirler.

(12)we should often wash the discharge grove and the baseboard of the shale shaker.

(13)according the stratum and the property of drilling fluid to select the screen, if the viscosity is high and the sediment concentration is big, we should select the less mesh screen.

(14) The use method of the discharge pipes

the use of the cyclone tube; when the feed liquid pressure equal to the rated pressure, turn off the valve on the overflow tube, make the tubular value of the overflow pipe is 0.01-0.03mpa. When the feed pressure below the rated pressure, adjust the valve on the overflow , make the tubular value of the overflow pipe is .0.02-0.05mpa,


usually, it operate 500h we should maintain it, the main part are rotating part, tensioning the firmware and replace part of lose efficacy components.

It operate 4000h, it need to overhaul, the main content is maintenance the cleaner all sided, replace the cone, check the insulation of the electrical machine , lubrication or tensioning all parts, at last we should paint the anticorrosion treatment.