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CBM Drilling Mud Cleaning System from China

The drilling mud recycling system developed independently by Tangshan Dachuan Machinery Co., Ltd (a professional manufacturer of Solids Control System in China)is applied to the whole process of CBM well drilling. This system can effectively control the solid phase content of mud between 5μm~15μm in the process of CBM drilling, and at the same time matching mud parameters ratio, promote drilling mud quality, the mud viscosity ratio can be up to 120s and mud density can be 2.4g/cm³.

Besides, this system can improve drilling speed, extend service life of mud pump and drill rig, ensure drilling safety, reduce labor intensity, in the meantime improve drilling site environment which plays a positive role in environmental protection.

Mud Recycling System

Through R & D, Tangshan Dachuan Machinery mastered the technology of CBM well drilling, coring, borehole connection and well completion, among which the CBM pinnate horizontal directional drilling technology is a comprehensive drilling technology that combined horizontal drilling technology, branch well drilling technology, under-balanced drilling technology, cave well connectivity technology in one.

The equipments of CBM drilling mud cleaning system manufactured by Tangshan Dachuan Machinery include: Sand tank, purification tank, shale shaker, desander, desilter, mud cleaner, centrifuge, centrifugal pump, shear pump, submersible slurry pump, mud agitator, jet mud mixer, mud gun, etc.

China famous Shale Shaker for sale

DCS series shale shakers are the new type shale shakers produced by our company, they are the first-level solid control equipments in the mud cleaning system, to separate drilling cuttings from drilling fluids.

DCS series shale shakers absorb the design experience and advanced technology of congeneric products at home and abroad, use the imported vibrating motor, Inland, DCS series shale shakers are the most advanced shale shakers at present.

DCS series shale shaker features:

With alloy steel material with higher strength.

The advanced screw thread loose-proof technology and metal surface treatment technology in the world are adopted.

General heat treatment completely eliminate stress.

Imported engine with adjustable excited force is used to give the machine an outstanding comprehensive performance.

Coating with high wearing resistance anti-erosion performance.

Vibration motor is from Italy Oli.

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

Meanwhile, the shale shaker can be acted as the underset shale shaker of mud cleaner. DCS series shale shakers have the advantage of high intensity of vibration , large sieving area, adjustable angle of screen case, compact structure, high cost performance, and easy to operate.

International Petroleum Equipment Exhibition-solid control

The 5th China (Dongying) International Petroleum and Petrochemical Equipment & Technology Exhibition started On September 17. Our company TangShan DC Machinery joined in it.

Manufacturers of home and abroad showed their best products on the exhibition, we talked with each other about solid control and shared personal experiences.

I have learned a lot from this exhibition, and looked the other solid control equipments. I talked with the foreign merchants, they are all friendly, I hope we can establish trading relations between us in the future.

The following pictures are the foreign merchants with me.


 Next exhibition-the 13th China International Offshore Oil & Gas Exhibition, we will join in and show our solid control equipments, high quality, good service.

 DC Machinery is a professional manufacturer of solid control system equipments in china. We will provide our client high quality products with most reasonable price, at the same time we also sincerely offer the high level after sales service for any home or abroad clients. We still adhere to the concept of creating the maximum values and the satisfaction for our clients.

 The following pictures are the products which showed on the exhibition.


Drilling Mud System Tank

Commonly, tanks are customized-made according to the detail situation of the worksite or the system requirements. The dimensions differ from one system to another.

In a set of solid control system, the size of the single tank and the amount of the cycle tank are decided by the height of the substructure, the local transportation condition, and the effective volume of the drill rig needed, etc. The top of the cycle tank should have enough space to put solid control equipments, mud agitator and drill rig transfer pump. Moreover, the settings of the associated line, mud trough, accessory, pump inhalation, remove pipeline, water pipeline and the space of other equipments should be considered. The volume of every storehouse mainly depend on the installation space of solid control equipments like shale shaker, desander, desilter, centrifuge, and other auxiliary equipments to confirm.

As a china manufacturer of mud system equipments, DC Machinery manufacture varies of mud tanks, water tanks and oil sludge tanks.

The body of the tank is made of welding the steel plate and section, using the flat cone-shape structure or the corrugated structure. The mud tank surface and the passage are made of the slipping resistant steel plate and linearity netted steel plate which is produced by the professional factory, the mud tanks are made of the side steel pipe, all of the structure can be folded without barrier and pegged reliably. The surface of tank is equipped with water pipeline for cleaning the surface and equipment on the mud tank, using soaked zinc processing for the netted steel plate. The ladder is made of the channel steel to take responsibility the body, the foot board is made of the linearity netted steel plate.

If you want to know more about mud system tank, please contact us. We will provide our client high quality products with most reasonable price, at the same time we also sincerely offer the high level after sales service for any home or abroad clients.

Drilling Mud Centrifugal Pump-Basic Parts

The basic parts of centrifugal pump are rotary impeller and stationary pump case. Impeller and the pump shaft are connected, and there has some crooked vanes on the impeller. When the pump shaft is driven by outside power, the impeller will spin in pump case. The liquid enters into centre of impeller, get through from vanes and enters into pump case, at last discharged from tangent exit of pump.

Impeller is the heart part of the centrifugal pump. Impellers have three types: open, half open and closed. The impeller of centrifugal pump has no front and back cover plate, vane is exposed completely, called open type. Only has the back shroud called half open type. When deliver slurry and liquid which has solid particles, no-blocking, but is easy to regorge, so the efficiency is low. The impeller which has front and back cover plate is called closed impeller. Sand pump uses open impeller.

Pump case is shell of pump body, it surrounds the rotary impeller, and has the liquid inlet and tangent exit which are perpendicular to impeller. The sectional area of pump case extended gradually and form a snail shell type channel, called volute. The rotary direction of impeller is along with the direction of snail shell type channel.

The common shaft seals of centrifugal pump have two kinds: packing seal and mechanical seal. The shaft seal ensures the centrifugal pump can work normally and efficiently. When centrifugal pump is working, the pump shaft is rotary but the shell is motionless, if the annular space between them not to seal or seal is bad, outside air will enter into low-pressure area of impeller centre, the flow and efficiency will decrease. In general we can use the mechanical seal or packing seal to realize the seal between shaft and shell. Packing can use the immersion oil or asbestos cord.

DC Machinery is a professional manufacturer of mud system equipments in china. We will provide our client high quality products with most reasonable price, at the same time we also sincerely offer the high level after sales service for any home or abroad clients. We still adhere to the concept of creating the maximum values and the satisfaction for our clients.

Shale Shaker produced by DC Machinery

In drilling process, shale shaker utilizes vibratory screen to recycle the liquid phase of drilling fluid, and as the standard of whether the solid phase can pass the sieve meshes or not, making the solid particles of different sizes separated into two groups or over two groups sizes of the machinery equipments, in the oilfield scene, it called drilling fluid shale shaker, short for shale shaker.Shale shaker is the necessary equipment in the well drilling equipments at present.

DC Machinery is a professional manufacturer in china, and  is a developing company mainly engaged in solid control equipments.  The shale shaker produced by Dachuan Machinery has absorbed the advanced technology of design and manufacture, the structure has been optimized, therefore can eliminate the harmful solid phases in the drilling mud effectively and guarantee the high-precision recovery of drilling fluid. It is the most cost-effective product in domestic.

In order to supply the excellent shale shaker with high screening accuracy, low-energy and no dust pollution, DaChuan Machinery controls the quality in each procedure.

To guarantee the durable structure of the shale shaker, the material is the GB steel from Beijing Shougang Company Limited, Shanghai Baogang Iron and steel Co., Ltd. and Tangshan Iron and steel Co., Ltd.

The used vibration motor is from the Italia joint venture Company named Oli. The motor has much advantage, like high strength vibration, large screening size, adjustable screen box angle, little noise, excellent performance and high efficiency.

The whole screen box has been heat treated, and there is anticorrosive coating on the surface to keep a long life of the shale shaker.

The area of shaker screen and handling capacity is large, the treatment effect is excellent.

Use the full adhesive edge hooked rigid shaker screen and plate closed fixture, it is convenient and easy to change the screens and can be changed into many kinds of screens.

Design the height of storage tank on the shale shaker reasonably to make the fluid buffer and flow, reduce the impaction by the fluid on the shaker screen, then extend the life of the shaker screen.

Using thermal relay overloading and open phase protection of electric control cabinet to guarantee the safety of the operators.

Only top quality products is the priciple of DC Machinery, as we always do.



Airtight drilling fluid solid control system

For adapting the drilling requirements on the sea and special areas, easy to transport and install, the USA and USSR produce the airtight drilling fluid solid control system successively since the 1970s. The system is constituted by shale shakers, swirlers, mud cleaners, centrifuges, mud agitators and various tanks, carry out the drilling fluid closed cycle process.

When working at the cold region and desert region, the whole devices needed to closed by large metallic box, this system has strong adaptability, in many cases can almost dispose all kinds of drilling fluids, furthest enhancing the treatment efficiency of drilling fluid solid control equipments. Don’t add drilling fluid, and also can keep the density of drilling fluid, handing ability and matched drilling rig are suitable, and can eliminate the drilling cuttings. This kind of system best fit in the water-deficient area or offshore drilling, and will not polluting the environment.

In the airtight drilling fluid solid control system, the underflow of screw type centrifuge will not be discarded, but be delivered to high-speed centrifuge to dispose, the eliminating drilling cuttings is dry. When in offshore drilling, the eliminating drilling cuttings handled by a set of distillation system, to cleaning the greasy dirt and water, and then the disposed drilling cuttings will be discharged into ocean, in this way can reduce pollution.

In general, airtight drilling fluid solid control system should have the following equipments: two detail shale shakers, one vacuum degasser, two mud cleaners, two screw type centrifuges, one high-speed centrifuge, and the drilling mud tanks system with intercommunicating pores. The drilling mud tanks system include three main tanks and two small storage tanks.

Airtight drilling fluid solid control system has already achieved success at different areas. On the offshore and ecology sensitive area use airtight drilling fluid solid control system will enhance the efficiency of drilling, and the cost is reasonable.

China manufacturer-DC Machinery is a professional manufacturer which is mainly engaged in solid control equipments. We will provide our client high quality products with the most reasonable price, at the same time we also sincerely offer the high-level after-sales service for any home or abroad clients. We still adhere to the concept of creating the maximum values and the satisfaction for our clients.


Development Trend of Drilling Mud Decanter Centrifuge

Development trend of drilling mud decanter centrifuge is high rotate speed, large capacity, high reliability and automation. High rotate speed is rotate speed of roller can reach above 2500r/min, separation factor can reach up to 1200~3000, and can eliminate the more fine particles, separation point can as low as 2~5 micron. Large capacity is continue to increase the capacity of existing centrifuge, when the capacity is larger than 40~50m3, the decanter centrifuge can eliminate the harmful solid phases quickly in the drilling fluid.

At present, the foreign decanter centrifuges strengthen the thruput and rotate speed of centrifuge, increase the separation factor, the material of centrifuge uses the stainless steel, enhance the corrosion resistance.

From the view of reflect, the centrifuge with large thruput, frequency control is needed, so that can add weight drilling fluid and dispose the no weighted drilling fluid. This kind of centrifuge can be called all-round centrifuge. TangShan DaChuan Machinery does many modification and innovation on the details for increasing the thruput and enhancing separation effect.

The DCGLW series decanter centrifuges are produced by TangShan DaChuan Machinery, the following is the technical 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


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