Key part is the Hydrocyclone for desander and desilter

Desander and desilte is an important of mud cleaning system, aslo which can combination with bottom shale shaker to be one unit, we call is mud cleaner. As we know the key part of desander and desilter is the hydrocyclone.

Usually the cone diameter is more than 6″is called Desander, and used as the second-control equipment in drilling operation. We commonly used 8 “and 10” cones desander to separate solid-phase particle size 47-76μm in the drilling fluids.


Desilter is the third class solids control equipment to treat the drilling fluids. According to the size of the cone diameter, they are divided into Desander and Desilter. Usually the cone diameter is less than 6″is called Desilter, and used as the third-control equipment in drilling operation. We commonly used 5 “and 4” cone to separate solid-phase particle size 15-47μm in the drilling fluid.


Hydrocyclones are preferred units for sizing or desliming large slurry volumes cheaply and because they occupy very little flor space or headroom. They operate most effectively when fed at an even flow rate and pulp density and are used individually or in clusters to obatin desired total capacities at required splits.

The reason why more and more drilling users choose DC Solid control

DC Machinery

DC Machinery is a company focuses on solids control systems’ production, sales and after-sales maintenance service.

1.Domestic leading solid control technology

DC solid control technology team has many years experience in oilfield industry, we had design hundred sets of solid control system. DC technology team aim at drilling actual situation and customer demand to design the most suitable solid control solutions. The technology team is leaded by the chief engineer constantly develop new products, make the equipments operation is more easy and ideal, to create more humanized mechanical equipment.



2.Reliable quality guarantee

DC Machinery have already passed the ISO9000 international authentication and system manufacture company, our company introduced ERP management system, DC solid control QC team strict inspection every links, after equipments complete, adjusting the whole solid control system and ensure customers can normal and safe work.
Our company established the experienced QC team and perfect product quality inspection standard procedure. The products are inspected third party by Tangshan quality supervision bureau.

3.Competitive price

DC is located in iron and steel city Tangshan, it has the advantage of material and it belong the heavy industry city, the works are very good at machining and has enough labors. All the main solid control equipment are our independent research and development production, it can control the cost. We also through the outsourcing parts processing to reduce the cost.

4. The perfect product service system

Pre-sale service: The company technology and salesman are according the requirements of customers, we provide the optimal matching scheme for customers.

The reason why DC centrifuges are well received by users

Horizontal decanter centrifuge has the advantages of good separation performance, well-adapted, can be automatic continuous operated, exercise intensively is small, small footprint and lower maintenance cost. So the decanter centrifuge had a rapidly development recent years, which can be widely used in industrial wastewater and municipal wastewater process field.


Operating reliability: DC company decanters differential mechanism adopt planetary gear transmission in high speed, and adopt pin-cycloid planetary gearing in low speed to improve the working reliablity. Spiral drive main bear use roller bearing and the structure of the thrust ball bearing which can improve the bear ability of the Axial force.

Wear-resistant treatment: The touching part of our company is made of stainless steel and superior alloy steel, the blades of screw pusher paint abrasion-resistant alloy or spectacles special cemented carbide.
All kinds of models: The diameter series of the decanter produced by our company are 250、350、450、550, slenderness ratio is 2. 3.
DC decanter centrifuges widely used in oil, chemical, light industry, mining, metallurgy, food, environmental protection and ect, which can totaly meet the requirements of dehydration of solid, and liquid phase.

Finished the assembly of 3 sets customized mud cleaner

DC Solid control finished the assembly of the 3 sets customized mud cleaner for domestic users at the end of 2017. The mud cleaners are used for drill water well in XinJiang zone of China.

Drill water well not need too large flow, so we choose mini DCS850-2 shale shake and 1 ea 8″ hydrocyclone to do this project. Smaller cones, typically 4″ in diameter known as desilters, remove finer silt sized solids, while the larger cones typically 10″ in diameter known as desanders removed the coarser sand sized particles.


Traditional mud cleaners use multiple 4 or 5cyclones, mounted over a vibrating screen, and are able to effectively process 400-600 GPM. The process capacity is limited by screen capacity and its ability to discard dry solids. With the introduction of linear motion vibrating screens, the capacity of the mud cleaner screen has been greatly increased. This, in turn, allows the use of additional hydrocyclones and higher, overall process capabilities.

The unique manifold design of DC Machinery minimizes the pressure drop across the hydrocyclones, thereby maximising solids removal and reducing the volume of mud discharged with the captured solids from the cone.

Cost-effective mud Cleaner from DC Solid control

With the combination of a desander and desilter mounted over a powerful multi-functional shale shaker, DC Solid control’s mud cleaners offer both high performance and versatility for the operator. This integration of advanced equipment puts forth a unit that can handle large volumes of circulating fluids and is able to retain fluid integrity.

Features such as our wedge-lock fastening system, mud bypass gate, and explosion proof enclosures all allow for ease of use. Our pride is truly expressed in our work through our craftsmanship, research, design, and the overall practicality of our equipment.



With our in-house engineering and design capabilities,  DC Solid control can integrate any number of hydrocyclone arrangements with any of our shakers. In all cases, DC’s hydrocyclones come with polyurethane bodies, where erosion resistant inserts are available. Standard hydrocyclone cone sizes available include 4”, 5”, 10”, and 12” and can be provided in arrangements of one to 20 cones.  To ensure optimum separation capability, the pressure differential through the hydrocyclone manifold can be controlled by the installation of isolation valves on each cone.

DC Solid control can design customized cost-effective mud Cleaner for customers special needs.Our mud cleaner can meet almost all needs for oil & gas well drilling fluids treatment system and HDD Mud Recycling System.

International standard Welding procedure of shale shaker

In order to prevent the innerstress is appeared from welding don’t allow weld screen box and any auxiliary parts.
We should adopt these steps when weld shale shaker.


1. Drilling 6mm hole in one end of flaw in order to prevent flaw extend.
2. Using round shovel spade groove along two sides of flaw.
3. Firstly preheat about 60℃ using 3mm diameter welding electrode to prevent any slag inclusions and bite meat condition.
4. Rubdown the protuberant electrode and weld the stiffening plate.
5. If id needs weld in screen surface bracket beam, all welding line should be parallel with beam.
6. When use alternating current weld the screen box should connect the ground to prevent current conveyance the bearing. Otherwise it is easy to led bearing damage.
7. The cutting surface will produce stress when flame cut, so the any addition holes all advised drill.
8. Installation requirements of mud shale shaker
9. When knit drilling fluid shaker screen and screen bracket is matched special vibration attenuation rubber strip. In order to make screen can reach the longest service life, the rubber strip should placed in among of screen and bracket.

We should ensure the equal interval between two sides of shale shaker screen box and screen hook when replace knit screen, we should fix the centre and compact steel flat at first, then tension the plate to keep the stress of screen surface is uniformity. It is one of the premature failure reason If the connecting is not good, the stress is not enough or uneven.

Offshore Drilling Cuttings Box Delivery To Indonesia

DC Machinery manufactured 20 pcs drilling cutting box for Indonesia offshore drilling project. And have the certificated by CCS

DC supply a complete line of Drilling Cuttings Box(Mud Cuttings Skips) for the safe containment and transfer of waste produced from offshore well drilling and completion processes.



Also known in the industry as Cuttings Boxes or Drill Cuttings Bins, DC’s drilling cutting box have been designed, manufactured and certified in accordance with DNV 2.7-1 / EN12079 and are suitable for drill cuttings, discarded mud and drilling fluids.

Safety features such as lightweight lids for safe and easy lifting, opening and closing are incorporated as standard. Our offshore closed mud skip capacities range from 2.6m3 (16.5bbls) through to 6.4m3 (40bbls) and are available for sale or rental throughout our network of global facilities. Our offshore vacuum rated cuttings skips include capacities from 2.6m3 (16.5bbls) to 3.8m3 (24bbls).

DC Machinery supplies good quality solids control mud tank with best price, welcome to contact us and get the best solution for your work!

DC Shale shaker and mud cleaner tested before delivery

Shale shaker and mud cleaner are all important equipment of solid control system. All equipment manufactured by DC Machinery must test before delivery to ensure the good working performance.

last week, DC Machinery customized a DSC630-3 linear motion shale shaker and a JBQ4 mud agitator for Pakistan got the good test performance. Latter will be loaded on board.



The shale shakers produced by DC Machinery have the advantages of large handling capacity, screening high precision, low-energy, environmental protection and so on. DC Machinery supplies high quality shale shakers, including Linear Motion Shale Shaker, Balanced Elliptical Motion Shale Shaker, etc.

Mud agitator, also called drilling mud agitator, used for drilling fluid agitation mix, prevent drilling fluid solid particles in the tank circulation system deposit, cycle drilling fluid performance stability, mixed evenly. DC mud agitator has high efficiency and wide usage, compact structure, big intensity stirring, easy maintenance and other significant advantages.

If you have any special request of anyother solid control equipment, please feel free to contact DC Machinery.

Operation principle of DC decanter centrifuge

The drilling mud decanter centrifuges can separate fine particles well,for separating 5~7μm particles in drilling mud,usually use medium speed decanter centrifuge,for less then 2μm,usually use high speed decanter centrifuges.


Even the finest solids can be separated in the decanter centrifuge if its sedimentation rate in the carrier liquid is sufficiently high. The sedimentation rate depends on the particle size, the particle shape, the density difference between solid and liquid, and the viscosity of the latter. In many cases, significant improvement is possible by conditioning, for example heating or addition of flocculants. Also important is the geometrical design and establishment of operating parameters.


Clarification of the liquid is effected in the case of solid bowl centrifuges primarily in the cylindrical section, dewatering of the solid matter taking place by means of filtration or compression of the solid cake in the conical section of the drum.

If you want to learn more about it, please contact us.

100pcs steel frame shaker screen manufactured for foreign clients

Steel Frame Shaker Screen is in common used presently, that are constructed mostly withe two or three stainless steel layers bonded tightly to the steel frame. Today, we shipped 100 pcs steel frame shaker screen to abroad.


Features & Benefits of DC Steel Frame Shaker Screen

1. Different layers with different density:To arrange these Steel Frame Shaker Screen layers reasonably and exactly,the screening effect will become better.
2. High strength frame,multi-ribs and the mesh cloth with moderate tension,from one reliable combination:which can increase screen’s acceptable flow,the intensity and the lifetime.
3. The wedge-shaped fastening device:it can make the erection of Steel Frame Shaker Screens more handily and quickly.
4. The mesh: divided into many independent small units by grids of the backing plate, can prevent rips or tears from spreading overmuch.
5.  Accessary prepared rubber stoppers can be used repair damages. By doing so,the operator can cut down the stop-time and reduce the cost.

Addition options

Material: stainless steel wire, low carbon galvanized.
Weaving and characteristics: crimp before welding.
Uses: used in coal, mine, water profession.

DC Machinery supplies all the popular shale shaker screen on market, which are classified into 4 categories: Steel Frame Shale Shaker Screen, Pyramid Shale Shaker Screen, Hook Strip Flat Screen and Hook Strip Soft Screen.