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Tag Archives: Drilling

Dual Motion Shale Shaker for sale

DC Machinery designs and manufactures a new type shale shaker: Dual motion shale shaker. It can form the linear motion and the balanced elliptical motion.

This shale shaker has three vibration motors, use the two 1.72KW motors can form the linear motion, if add the 0.4KW motor will form the elliptical motion.

We can switch the motion trail according to the situation of scene. The following is the parameters of dual motion shale shaker.



Vibrating Mode

Linear Motion + Balanced Elliptical Motion

Motor Power


Vibrating Strength




Treating Capacity

140 m3/h (616 GPM)

Deck Adjustment


Normal Power

380V/50HZ(Foreign custom motor according to customer requirements)

Screen Area

2.68 m2

Screen Specification

750×1195mm  (40~200mesh)


Treating capacity test from mud:1.2g/cm3 density & viscosity 45s & 40mesh

DC Machinery is a professional manufacturer of Solids control equipment. We can supply high quality dual motion shale shaker and the type also can be customized according to the requirement of customers.



High quality Jet Mud Mixer for sale

Jet mud mixer is used to make up drilling fluid or increase total amount of the drilling fluid, change the fluid density, viscosity, and dehydration. When making up again, put the materials of drilling fluid (such as betonies and barite powder) and corresponding chemical additives (such as polymer) into the recycle tank through the jet unit. If put them directly, the materials of drilling fluid and chemical additives will be deposited largely or dump together and we can’t obtain diffused and well-proportioned drilling fluid.

Several days ago, we supplied a jet mud mixer for our customer. The following is the technology parameters:

1 Matching pump: 22Kw

2 Treating Capacity: 100m3/h

3 Pressure: 0.25~0.40Mpa

4 Inlet: 35mm

5 Hopper dimension: 600x600mm

6 Burden speed: ≤100kg/min

7 Density: ≤2.8g/cm3

8 Viscosity: ≤120s

DC Machinery can design and manufacture high quality jet mud mixer according to the requirement of customer. Welcome to our website.


The manufacture of shale shaker in China

At present, domestic shale shaker production, research and development have already blossom everywhere, most of manufacturers grasp the technology of linear motion shale shaker and elliptical motion shale shaker. The difference of theory parameter and structural concept are little, the main difference is manufacturing process level. 

The domestic shale shaker whether is the linear motion or elliptical motion, screen box structure and corresponding auxiliary function have the following common:

1 The shale shaker frame is weld structural part, the vibrating motor and screen plate are installed on the screen box by parts.

2 The shale shaker frame is set on the support adjustment beam, the vibration reduction springs are installed on the four corners near the screen box, and the components or equipments are freed from the influence of frame vibrating.

3 There are three or four frame screens or wave screens, and fixed by bolt and hook strip tension.

4 The combined action of transverse and longitudinal support make screen frame have enough strength, screen frame along the lateral central slightly higher than the two sides, and in the transverse direction form a raised arc. In this way can make the screen tension, and can enhance the service life of screen.

DC Machinery is a professional manufacturer of solids control equipment in China. We will provide our client high quality shale shaker 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.


Hydrocyclone trouble shooting

Hydrocyclone is designed for separating solids from liquids and are successfully used in a broad range of industrial and environment applications. It is also often used in petroleum drilling industry. This article lists some trouble shooting about hydrocyclone.

1 Under the situation of centrifugal cone no damage, the bottom flow hole of the cone block continuously.

The reason and measure: the inlet or outlet is blocked, bottom flow hole is too small. We can eliminate the block, clean pipeline, check up the shaker screen whether be damaged or appear flow around a body.

2 There is no drilling fluid flow in centrifugal cone (leakage).

The reason and measure: the inlet is blocked, so lead to the drilling fluid backflow.

3 The stock inlet pressure head is low.

Check up the running state of centrifugal pump: include the revolutions per minute, voltage, etc. Check up the pipeline block, such as solid sediment, valve close. Check up the shaker screen whether be damaged or flow around a body.

4 The centrifugal cones discharge dry particles.

The reason and measure: the bottom opening is too small, we should increase more cones.

5 The solid content in drilling fluid is increase.

The reason and measure: the processing capacity of centrifugal cone is not enough, we can install more cones. The solid particles may be too small, the mesh number of shaker screen may be too low.

6 The loss of drilling fluid is too much.

The reason and measure: The bottom flow hole of centrifugal cone is too big, decrease the diameter of discharge outlet or use the centrifugal cone with smaller nominal diameter.

7 The cone discharge unsteadily, the feed pressure head is changed.

The gas interfuse feed pipeline, check up the degasser is normal or not.

8 The bottom flow of hydrocyclone aerate.

Set passage to make the overflow enter into the drilling fluid pool.


Drilling fluid Desander and Desilter for sale

Desander is the second equipment in solids control system, it is used to separate the solid phase particles whose diameter is more than 44μm from drilling fluid.

Desilter is the third class equipment in solids control system, it is used to separate the solid particles whose diameter is 15-44μm from drilling fluid.

Desander and Desilter are designed by the theory of particle sedimentation. The separation medium-drilling fluid produces some pressure and speed when it passes the centrifugal pump, and flows into the hydrocyclone along the wall, the bigger solid particles along the wall of hydrocyclone sink spirally under the centrifugal force and gravity, and to be discharged from the bottom flow hole and fall on the under micromeshsieve for separation. The other mediums rise along the spiral of hydrocyclone, flow into the next class separation equipment for a further cleaning treatment from the overflow hole.

In order to meet the requirement of disposing all drilling fluid, desander and desilter must be constituted by several hydrocyclone cones. For ensure the normal work of hydrocyclones, the liquid inlet pressure must be kept 0.25~0.35MPa. Due to the cones of desilter are more, pipeline is long, so the liquid inlet pressure should take larger value; the cones of desander are little, pipeline is short, so the liquid inlet pressure should take lesser value.

The liquid inlet pressure mainly depends on whether the matched sand pump is reasonable, thus it is important for choosing sand pump. Throw of sand pump is about 40m generally, the discharge capacity is equal to the marked thruput of desander and desilter, can satisfy the use requirement. Meanwhile, choosing desander and desilter must refer to the max thruput of drilling pump, achieve reasonable match.


Detailed installation of Jet mud mixer

As with all equipments, jet mud mixer  must be correctly  calibrated and installed, to obtain the ideal working performance.

1 Try to reduce pipeline on-way resistance, thus the pipeline required short and thick, smooth bend. Jet hopper equipped with matching venture tube can improve treating capacity, speed up solid diffusion and avoid caking.

2 The return pressure of outlet pipe needed moderate, overlarge return pressure will reduce the treating capacity of mixed hopper. For example, when the nozzle outlet diameter is 50mm, the gap between nozzle and venturi tube is 90mm, mixed hopper working pressure head is 21~23m, before return pressure value not reach 50% of inlet pressure, mixing chamber has the high vacuum, however when the return pressure value is near by 50% of inlet pressure, the vacuum is almost zero, drilling fluid begin to return flow in hopper.

3 Another important consideration of install equipment is the drilling fluid required lifted height. If discharge needed to enter into different deck tank or a taunt tank and hopper, mix rate will be decreased. When the height from 1.83m to 3.66m, barite adding rate will be reduced to 17%. If the increased demand is very high, the pump capacity is insufficient, mixed ability will be greatly reduced.

4 In order to ensure the required well pressure, suggest that each drilling crew should equipped with a spare set of mixing hoppers, in most cases spare hoppers used overlap mode.

Any questions about solids control equipment, please contact DC Machinery freely.


The care and maintenance of Shale Shaker Excitation Motor

The care and maintenance of Shale Shaker Excitation Motor can increase shale shaker work efficiency, extend service life of shale shaker and reduce the operation cost.

1 The dust on the casing should be cleaned periodically.

2 Before operation the fix bolts of the motor should be checked to see if they are loosened. If so, they should be fixed tightly before use.

3 Check to see if the service cable is rubbed, buried or squeezed.

4 A good lubrication of the motors should be ensured during their operation.

An appropriate amount of high temperature lubricating grease has already be injected into the bearing before its assemblage, with working temperature between -40~200°C.

Not more than 25.8g lubricating grease should be injected into each bearing for every 2000 hours.

Usually the temperature of the bearing will rise for one or two days after lubrication. The lubricating holes should be sealed to prevent dust from entering into the bearing and damaging it.

5 The insulating test should be done to the coil of the motor after a long period of halting. It will not be operating until the resistance is less than 0.5 MSZ when testing with 500V megameter.


The power supply should be cut off immediately when the motor is found not running with power supply connected to avoid damage the motor.

Observe the motor to see whether there are anything abnormal happened, such as intermittent or strange noise. If two motors are not running synchronically, it should be stopped immediately and restart after the problem has been solved.

Under cold state, the motor continuously starting should not be more than 5 times generally. And under thermal state, if the motor is started over again, it cannot be exceeds 3 times.


Solve common fault of using centrifugal pump

Two centrifugal pumps connected in parallel on the same solids control equipment. This is the most often occurred situation in drilling fluid solids control arrangement. If the pressure head is 30m, the flow of hopper nozzle is 25L/s, install two centrifugal pumps in parallel can get a pump with pressure head of 30m, the flow is still 25L/s. The result of two pumps parallel operation is:

1 In fact only have one pump flow.

2 Almost only have one pump delivery pressure.

3 Compared with one pump, the wear is reduced if using two pumps.

4 The power consumption is increased, if one pump be a good status, it can complete most or entire work, and maybe pumping by another pump reversely.

If one pump can’t reach the required pressure head, we should not add another pump abreast. We should check whether the pump be a good working state, if the pump has already be a good working state, but not yet reach the required pressure head, we need to change bigger impeller. After choosing bigger pump or impeller, the motor power is also required larger, and the flow of centrifugal pump will be increased. Therefore, before installing the bigger impeller, we should check whether the motor has enough power, if has already reach the required pressure head, but still need larger flow, then need to replace the equipment to use larger handling capacity equipment or add hydrocyclone cones.


Mud gas separator & Vacuum degasser

Drilling fluid mud gas separator is the primary degassing equipment for disposing drilling fluid. Compared with vacuum degasser, the major difference is the mud gas separator is mainly used for eliminating the big bubbles whose diameter is larger than 3mm in drilling fluid. In addition, mud gas separator is mainly by gravity impact action to realize the separation, and yet the vacuum degasser adopts the theory of vacuum, centrifugation.

The handling capacity of vacuum degasser is less than the mud gas separator, but can eliminate gas more thoroughly. Generally the drilling fluid disposed by mud gas separator still contains minute bubbles, after through shale shaker, and enter into the vacuum degasser to dispose.


The following are the DC Machinery Mud gas separator and Vacuum degasser parameters.

Mud gas separator parameters:

Model ZYQ800 ZYQ1000 ZYQ1200
Main body diameter 800mm 1000mm 1200mm
Capacity 200~260m3/h 240~300m3/h 280~360m3/h
Inlet pipe 5″ 5″ 5″
Output pipe 8″ 8″ 10″
Gas discharge pipe 8″ 8″ 8″
Weight 1600kg 2100kg 2800kg
Dimensions 1900×1900×5700mm 2000×2000×5860mm 2200×2200×6634mm

Vacuum degasser parameters:

Model ZCQ240 ZCQ270 ZCQ300 ZCQ360
Main Diameter 700mm 800mm 900mm 1000mm
Treating Capacity ≤240 m3/h ≤270 m3/h ≤300 m3/h ≤360 m3/h
Vacuum -0.030~-0.045MPa -0.030~-0.050MPa -0.030~-0.055MPa -0.040~-0.065MPa
Ratio 1.68 1.68 1.68 1.72
Efficiency ≥95%
Motor Power 15kw 22kw 30kw 37kw
Vacuum Power 2.2kw 3kw 4kw 7.5kw
Dimension 1750×860×1500 2000×1000×1670 2250×1330×1650 2400×1500×1850
Weight 1150kg 1450kg 1800kg 2100kg

The mud gas separator and vacuum degasser are all degassing equipments in solids control system, they are extremely reliable, vital piece of safety equipments for today’s drilling operations.


Double Amplitude Shale Shaker for sale

DC Machinery can produce all kinds of shale shakers with different sizes and types, can meet the requirements of different handling capacity and installation sizes. Also, DC Machinery can produce Double Amplitude Shale Shaker according to the actual requirements of clients and supply the corresponding pipelines

DC Machinery shale shaker features:

1 The vibration motor is from the Italia joint venture company named Oli.

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

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

DCS/TS Drilling Fluid Double Amplitude Shale Shaker Parameters:



Vibrating Mode

Linear Motion + Balanced Elliptical Motion

Motor Power


Vibrating Strength




Treating Capacity

140 m3/h (616 GPM)

Deck Adjustment


Normal Power

380V/50HZ(Foreign custom motor according to customer requirements)

Screen Area

2.68 m2

Screen Specification

750×1195mm  (40~200mesh)


Treating capacity test from mud:1.2g/cm3 density & viscosity 45s & 40mesh

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