The difference of desander and desilter

For desilter and desander. They are typical mud equipment for solids control.

Main introduction on desilter and desander

Drilling mud desanders are installed on top of the mud tank following the shale shaker and the degassing machine, but before the desilter. Desander removes the abrasive solids from the drilling fluids which cannot be removed by shale shakers. Normally the solids diameter for desander to be separated would be 45~74μm, and 15~44μm for desilter.



How do they work?

The basic principle is decanter separation principle. When the suspension particles pumped by centrifugal pump, the drilling fluid will be forced to move as swirl. This will result large centrifugal force.

At same time, lighter solids will become reverse whirl go up straightly. When the centrifugal force is not sufficient this small part of particles will be involved by fluids and flow away

Different cones will lead hydrocyclone separator get different performance and process result. When we use hydrocyclone separator to separate useless solids there will be much barite in the under flow drilling mud.

Desander and desilter for HDD

Desander and desilter is the second and third phase equipments for horizontal directional drilling (HDD). Desanding hydrocyclones remove abrasive coarse solids and sized particles downs. The desander can be moved vertically or on an incline and be either skid-based or mounted on top of a drying shaker/ mud cleaner. Directional drilling is the practice of drilling non-vertical wells. It can be broken down into three main groups: Oilfield Directional Drilling, Utility Installation Directional Drilling (or HDD). Horizontal Directional Drilling, Directional boring) and in-seam directional drilling (Coal-Bed methane). All of the HDD need mud system and many of them needs mud desanders to be mounted on the mud tank.

Drilling mud desilter

Drilling mud desilter

Desander and desilter for drilling mud system

Actually, we’ll combine desander and desilter together to save more space and get better performance via large bottom shaker screen area.

Nowadays more and more users prefer mud cleaner but not separated desander or desilter. They trust high efficiency will bring them more superiority and save more cost

If you need more information on desilter work principle or any other solids control equipments info please feel free to contact us. Come to Aipu find your solution on oil rig mud solids control

Drilling mud solids control decanter centrifuge

Drilling fluid is indispensible in the oil drilling operation, but it costs a lot at the same time. It is necessary to recycle and reuse the drilling mud during the process of digging oil wells. Drilling decanter centrifuge is designed for barite recovery and dewatering in global drilling projects where the best efficient fluids/solids separation is required. Aipu solids control will share some information about decanter centrifuge.

The function of centrifuge

Decanter centrifuge is used as the 4th phase solids control equipment after shaker, desander and desilter. The centrifuge suck the mud from the compartment receiving the discharge from the desilters and mud cleaners, and the returned stream is directed to the next compartment downstream. The use of decanter centrifuge with the drilling mud is removal fine solids from un-weighted fluids and selection separation of colloidal and ultra-fine solids from weighted fluids to improve their flow properties.

The use of decanter centrifuges with un-weighted drilling fluids

Decanter centrifuges are specially designed for the drilling mud solids control. The effective centrifuging and fine drilled solids separation can remove significant quantities of inseparatable solids. This significantly reduces the traditional dilution requirements and drilling waste volume for disposal.

When centrifuging the un-weighted drilling mud, keep in mind the following:

  1. Operate the centrifuge with high G force as the solids loads are low
  2. Adjust the weir to a deep pool to maximized solids separation
  3. Control a smaller mud feed rate to increase residence time
  4. Operate centrifuges in parallel, not in series if multiple centrifuges are required.
High speed centrifuge

High speed centrifuge

How to maintain the drilling fluid centrifuge during using?

The first point: we must regular maintain on the centrifuge, regular cleaning the inlet and outlet, add grease to the bearing parts.

The second point: regular inspect easy damaged parts on the drilling fluid centrifuge, like hoses. In order to ensure the process in the use of these parts is not a problem which influences the production. Finally, reduce the on-off times as far as possible, when drilling fluid centrifuge started, preferably every 8 hours rather than an hour on drilling fluid centrifuge to start. Do all of the above, then you’ll find out centrifuge failure rate will be greatly reduced in use.

A brief introduction for mud cleaner

Mud cleaner info

Mud cleaner being the drilling fluids cleaning equipment for the second and third stage in the solids controlling system of well drilling slurry, the mud cleaners separate a lot of drill cuttings entrained by the drilling liquid returning from the well to offer convenience for the slurry to enter into the next separating device.

Mud cleaner structure

Mud cleaner usually consist of desander, desilter and underflow shale shaker.

Desander manifold can accept one, two, or three 10” desander cones. Each 10” hydrocyclone can process 500 GPM at 75’ of head at the manifold for a total capacity of 1500 GPM. The mud cleaner’s property and operation will directly affect the separating result of next separation equipment.

The vibrator makes the sieve box reciprocate, taking the solid grain in the slurry out of the sieve surface along with the sieve motion, realizing the separation of the solid and liquid.

Well drilling mud cleaner

Mud cleaner

Mud cleaner features and benefits

1.Desander & Desilter & Shale Shaker 3 in one unit mud cleaner for compact footprint.

2.Polyurethane Material hydrocyclone for long life

3. Removable hydrocyclone assembly from mud cleaner skid for adjust to be a shale shaker.

4. Patent electric shaker deck angle adjustable while working, mechanical deck angle adjustment for

backup application.

5. Patent tighten rubber sealing for mud cleaner shaker deck and screen for fine screen

6. Shaker bottom deck made from Stainless Steel for long service life.

7. Heat treatment on complete shaker deck for High G force operation.

8. Pre-tensioned Shaker screen for fast screen replacement.

9. Famous Brand Vibration Motors : IEC Ex, ATEX and UL

Mud equipments for well drilling

Actually, every kind of well drilling will request mud treatment equipment. Such as O&G drilling, CSM, HDD, water well, geothermal well, etc. What are exact equipments for mud process?

Strictly speaking, including mud pump, solids control equipments/system. Detail is shale shaker, mud cleaner, decanter centrifuge, centrifugal pump, degassers, mixing pump, mud tanks, etc. Mud pumps provide power and motivate.

Mud cleaner is important equipment for drilling mud solids control system. If you are interested or you have any question on mud cleaners please contact us freely.

Shale shaker screen for sale

Shale shaker screens are important spare part for shale shaker. Even for general solids control equipments, shaker screen is rather consumable.

Shaker screen sale from Aipu

Shaker screen types will be divided into various types according to different standard. Totally including flat screen, pyramid screen, steel fram screen, soft/hard hook strap screen, composite screen, PU screen, etc.

Furthermore, shaker screens also divided into single layer, two layers and three layers screens. Then, subject to shale shaker screen mesh size including common mesh screen, fine screen, super find screens.

As an API Certified manufacturer for shale shaker screens, Aipu solids control have the following shale shaker screens for sale:

Aipu API Shale Shaker Screen

Derrick Shale Shaker Screen.

MI-Swaco Shale Shaker Screen.

NOV Brandt Shale Shaker Screen.

The following is screens API size

The API RP13C is rather essential international standard. These standard issues including the API screen size, D100 cut point range, conductance, non blanked area. Generally, from 20-400 or API20-API425 for shale shaker.

If we request API140 screens its opening size is about 104microns while the cut point range is 98~116.5microns, while the conductance is variable according to different design and different manufacturer.

Commonly it will be 0.99~2.24, etc. None blanked open area determined by labeling and measuring every opening on two production screens.

So, when we select or purchase shaker screens, the API size is universal and standard one. You can tell us the API number or the mesh size, either the cut point of separated particles.

Shaker screen

Shaker screen

High performance shaker screen from Aipu

Aipu mud equipment produces high quality shaker screens, including above mentioned brand and model. The price is rather competitive with reliable quality. The usable life is variable as per different working condition or mud property. While the price is very reasonable and cost-effective.

When you order our screens, you can tell us the shale shaker brand and model, the appearance, the clamping type, the mesh size or API number as we talked before. Anyhow, more information you give us more optimal and correct quote will be offered to you.

Mud tank for oil drilling mud system

Mud tank systems are a critical component of any drilling operation for maximizing solids control efficiency and effectiveness.

Mud Tank Feature & Benefits

Mud tank is an indispensable part in mud circulation system, and it can complete weighting, mixing, solid-liquid separating, degassing and other processes. Drilling rig mud tank carries the mud circulating between well head and mud pump. The solids phase particles in mud are separated stage by stage through relevant solids control equipment on mud tanks as to make the fluid meet drilling requirements after mixing and weighting system

Drilling mud tank classification

Based on functions, mud tank includes active tank, circulating tank, mixing tank or suction tank, chemical/pill tank, storing tank etc.

Mud tanks for solids control systems are divided into square tanks and Cone-shaped tanks according to the shape of the tank bottom. The body of the tank is made by welding the steel plate and section, using the smooth cone-shape structure or the corrugated structure.

A drilling rig normally has two tanks. One tank is sectioned off into compartments that may include a settling tank, or sand trap, to allow sand and other solids in the drilling fluid to precipitate before flowing into the next compartment. Other compartments sometimes have agitators used to stir the fluid.

Mud tank

Mud tank

Tanks for oil drilling mud system

Generally speaking, tanks for oil drilling mud system always larger than others because of it’s larger treating capacity and different of request . It will including shaker tank, desanser or desilter tank , active tank , mixing tank . Tank size depending on mud requirement , layout request and habit .

Aipu proprietary tanks are designed to assist with proper solids control. And since each mud tank can be constructed in a variety of sizes and styles based on your application requirements, it’s easy to customize our equipment to your project needs. If you need it, please contact us freely.

Mud gun in drilling fluids processing system

Mud gun is designed for solid control system of drilling rig. Drilling fluid mud gun is one kind of special tool which mainly uses in the drilling mud circulation system and prevents the mud precipitates. The structure of drilling fluid mud gun is simple, flexible Operation and easy using. Drilling mud gun is the ideal equipment to guard against the precipitate in mud tank for fluids processing system

How to equip and maintain mud gun?

The equipment of the mud gun, you can put the mud gun which works with stack sizer in the drilling fluid tank directly and connect the import flange with the mud gun pipeline. The output of the sand pump should be connected with the mud gun pipeline to provide the drilling fluid to the mud gun conveniently.

To maintain the mud gun and the stack sizer, the mud gun and the stack sizer have to be oiled every three weeks and the lubrication has to be added to the sealing part at least once. You should inspect the connection of the pipeline and the flange regularly to see whether the bolt is loose or not. If so, you should fasten the bolt in time.

Mud gun features and benefits

1. Aipu mud gun can be adjusted by rotating at a wide angle.

2. The jet nozzle used is both replaceable and wearable

3. Optional high pressure and common pressure

2. Swiveling type and fixed type

4. Reliable standard material

5. Simple design and compact


1. Adapts better according to certain working condition

2.1 or 3 nozzles for option

3. Can do mixture complete without any blind angle

4. Durable enough low maintenance

5. Easy to operate

Working mechanism

Drilling fluid under certain pressure and flow rate is taken into the mud gun by centrifugal sand pump, and spouts out through the jet nozzle, then it can be agitated and mixed by turning the rotary handle. It also can be used to clean out the deposited sand at tank bottom.

Mud gun

Mud gun

NJQ Series Mud Gun Parameter




Interface Dia.



Working Pressure



Nozzle Number



Rotation Angle



Mud gun in drilling fluids processing system

Mud gun in drilling fluids processing system is always located at the corner of the tank to keep solids from settling. Mud gun always applied together with mud agitator that installed at the center of mud tank. In drilling mud processing system, mud gun often used in trip tank, mud mixing tank and mud storage tank

Mud gas separator maintenance

Mud-gas separator is a special kind of equipment for primary degasification from gas-bearing drilling fluid in the process of drilling. Mud gas separator and flare ignitor are commonly used together as a complete gas disposing system.

Separating principle of mud gas separator

The gas-bearing drilling fluid from throttling manifold flows into decompression tank through incoming-stream manifold of separator, then enters the separating tank through output pipe. The gas-bearing drilling fluid dashes on a series of baffles, it makes the bubbles in drilling fluid break up. And when the drilling fluid flows through the surface of baffles, it becomes turbulence to enable the gas separate from it. The bubbles are kept on the surface of baffles and inflate and break up.

Mud-gas-separator maintenance and attentions

1. Open the screw plug for sand discharge in the manifold side to remove sand when the mud discharge manifold is blocked.

2. The separator assembly is pressure container, so it must be used in designed working pressure and surroundings. Overpressure work is forbidden. The safety valve should be checked at least once a year.

3. The baffle should be checked after a well has been completed. Replace it if there is something wrong.

4. Welding on the separator assembly is forbidden.

5. The exhaust pipe and liquid discharge pipe should be arranged separately when the separator is paralleled. Uniting the pipes is forbidden.

Mud gas separator

Mud gas separator

Aipu machinery has won high recognition and praise from domestic and abroad with science core technique and a lot of innovative patents. At present, Aipu Machinery’s business scope has covered the whole world. Welcome to Aipu solids control inquiry.

YZ Submersible slurry pump structure and parameter

(YZ) slurry pump info

YZ Submersible slurry pump is with structure of vertical single stage and single suction system overhung centrifugal pump, it is made of abrasion-resistant alloy, it can convey medium with high concentration particle. There is no bearing and Gland Seal between impeller and pump body, so the slurry pump is maintenance-free and high temperature resistance, the slurry pump is the ideal centrifugal pump for oilfield drilling industry.

YZ(S) Slurry Pump Parameter







m3/h l/s














































































YZ Submersible slurry pump structure

YZ Slurry  Pump is the cantilever pump structure of single stage and single suction, with the bearing housing, supporting, intermediate pipe connecting the pump hydraulic components, the water is discharged out from the drain pipe parts, pump impeller is for semi-shrouded with the agitating vane on the vane extended, the main characteristic of this pump is the underwater pump shaft parts have enough rigidity, the impeller and pump shell have no bearings, no shaft seal, which can transport the greater medium of solid particles.

YZ Slurry Pump

YZ Slurry Pump

The length of inserting the water by slurry pump is between 800 and 2000, the suction pipe can be matched in case of need. The shaft seal runs into the underwater pump without setting up the shaft seal, drive should be installed the vertical motor on the supporting seat connecting with coupling and pump.

If you are interested please contact us for more information

The reason of slurry pump abnormal operation

Slurry pump brief introduction

Slurry pump is used to transport solids liquid mixture. Solid  liquid pump has many types, including centrifugal type, screw-type, mixed flow type.

Actually, the slurry pump that we have called is a kind of centrifugal solids liquid pump

Slurry pump applies to conveying solids liquid mixing with strong corrosive characteristics and containing hard solids particles.

Slurry pump classification

  1. According to arrangement: horizontal slurry pump,   submerged slurry pump.
  2. According application: ash pump, drilling mud pump, gravel pump, mining pump and foam pump.
Slurry pump

Slurry pump

The reason of slurry pump abnormal operation

First, the slurry pump does not absorb water

There are many reasons may cause submersible slurry pump doesn’t absorb water, the main causes include: suction pipe is blocked and impellers are damaged, to solve these two problems the main methods are: clean up the blockages in the suction pipe and repair or replace the impellers.

Second, the slurry pump power is too large

Main causes of submersible slurry pump power too large include: excessive packing compression, pump friction, bearing damaged and too large fluid flow, the four problems solving methods are: relax packing gland bolts, adjust the pump internal clearance, repair or replace damaged bearings, adjust pump operation.

Third, slurry pump bearing heating

Causes of submersible slurry pump bearings heating are generally derived from lubricants and bearings, including lubricants are not clean, lubricants in bearings are too much or too little, bearings damaged, etc. Methods of excluding bearing heating faults are: use clean lubricants, add lubricants for the bearings based upon requirements, repair or replace bearings.

Aipu solids control is a professional drilling mud equipment manufacture in china. We can provide a series of drilling mud solids control equipment to meet your different requirement. Our high performance slurry pump get good feedback from many clients all over the word. Our purpose is to service clients, make clients satisfied.

If you are in interested in slurry pump or other solids control equipment, please do not hesitate to contact us.

Flare ignition device from Aipu solids control

Flare ignition device is a special oil drilling equipment to handle the invaded gas, it is also an effective equipment to handle the tail gas and invaded natural gas in refinery and natural gas collecting and distributing station. It can ignite the harmful invaded gas to eliminate the hazards to the environment, so it is also a security environmental protection equipment. This equipment can match with mud gas separator, and is usually used in oil & gas drilling and CBM drilling.

Parameters of flare ignition device



AFI 20/3

Torch Dia


Burner Height




Ignition Voltage


Ignition Frequency


Features and benefits

1   High quality standard steel material

2   Compact design and light weight

3   Connected with H2S poor boy degasser by flare line.

4   Burn H2S and other poisonous gas efficiently and completely

5   High ignition frequency

2   Save space, easy to handle and transfer

4   Protect drilling site and keep work safe

Ignition device maintenance measures

1. The instrument should works in the cool and dry place, don’t shine for a long time and forbidden to insolate, rain.

2. If the remote control can’t get the signal under normal circumstances, and the remote control ejector indicator is darken shows remote control battery is undervoltage, need to change battery.

Flare ignition device

Flare ignition device

3. In order to ensure the accumulator can normaly work when have no alternating current, when have current request use 220v alternating current.

4. The ignition needle need often scrubbed, eliminated teh carbon deposition and sundries.

For further information or any question please feel free to contact Aipu.