Mar 16

Oily sludge refers to a mixture of oil, water, and solids. In order to treat the sludge and recover the oil and water, it is necessary to separate the oil, water and solids. Meanwhile, how to lower cost disposal of solid and recovered oil as much as possible is very important, mud solids control professional to crown centrifuge design, and the oil-water separator to the thermal desorption system is specifically designed for processing oil sands sludge of.

Oily sludge from the source to the sub-words are: 1, crude oil tank cleaning waste sludge produced oil sands, 2, oil sands refinery waste sludge, 3, drilling sludge waste oil sands.


For the different sources of oily sludge, each customer’s treatment is going to be different, GN solid control will configure reasonable treatment equipment according to the specific requirements.


The core processing equipment mainly includes:


1, shale shaker for separating coarse solid particles, and design patents, the excitation strength of up to 8.0 g, and an optional anti-splash Branch sealing system, a thermal spray cleaning system that can effectively remove large particulate material The surface is oily.


Drilling fluid shaker

2, fine solid particles and centrifuge for the separation of oil and water, use of patented technology and top materials and technology, international brands imported bearings and components, improve the stability of the equipment, extend the service life.


  1. The oil-water separator used to separate the two liquid phases can be equipped with various oil-water separation devices, such as ultrasonic and air floatation, to meet the processing requirements of various customers.


4, thermal desorption system, the oil content can be reduced to 0.3% solids, learn from foreign advanced technology, combined with the actual situation of the domestic market, through research and development team of innovative, environmentally friendly design, no secondary pollution, energy consumption Low, safe and reliable.

More detail,welcome to visit GN Solids Control

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Mar 11

GN GN Solid Control Co., Ltd. is a well-known drilling mud solids control equipment at home and abroad, drilling waste processing equipment manufacturers:


Oil & Gas Drilling—-Solid Control System & Recycling Equipment


Directional Crossing & CBM – Mud Recovery System


Mine & Industrial & Environmental Protection —- Solid-Liquid Separation Equipment


GN Solids – Centrifugal Separation Equipment Polyphenylene Sulfide Waste Salt Recovery

1, material characteristics

In the production process of PPS, after the polycondensation reaction is completed, the solid phase is washed, the washing liquid is extracted and recovered, the solvent is evaporated, and the crystals are condensed to obtain the by-product inorganic salt sodium chloride.

Ingredients are complex, including sodium chloride, ash, low phenolic materials, solvents, etc.

High solid content, high viscosity, high temperature, 80-100 °C (usually 80,90 degrees Celsius)

After condensation, the material is agglomerated and has a high hardness.

Solid particle size distribution range is wide.

2, the current separation equipment overview and problems

At present, the siphon scraper centrifuge is used to separate the coarse-grained materials, and the separation liquid containing fine particles is separated by a LW horizontal decanter centrifuge.

Due to the large viscosity of the material, the material after condensation is agglomerated and has a high hardness, and the filter cloth is easy to be clogged, making it difficult to clean and regenerate. The siphon centrifuge can only be used as a settling centrifuge.

Failed to develop siphon blade centrifuge capabilities.

High energy consumption, large area, high maintenance costs.

Automatic discontinuous work, high labor costs.

The installation is complicated and the installation cost is high.

3, the advantages of GN solid-control centrifuge

According to the characteristics of the material, it is recommended to use a short drum spiral unloading settling mud centrifuge (dehydration centrifuge) + clarification decanter centrifuge to separate medium and coarse particles and fine particles.

There is no filter in both models, which can avoid the risk of filter clogging.

Low energy consumption, small footprint, low maintenance costs.

Automatic and continuous work, low labor costs.

The installation is simple and the installation cost is low.

GN Solid Control Decanter Centrifuge can continuously feed, dehydrate and unload the sodium chloride in the polyphenylene sulfide desalting section during full-speed operation. It has a sealed operation, large processing capacity, stable performance, low energy consumption, and separation efficiency. it is good. It overcomes the shortcomings of existing separation equipment such as intermittent operation and small production capacity, saves investment, and simplifies operation.

More detail,welcome to visit GN Solids Control

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Mar 01

GN Solids Control mainly manufacture and supply equipment for drilling field

As important part in the drilling process of oil drilling or directional through construction, and the control of its performance parameters is focused on rheology and loss. Mud rheology refers to its flow and deformation under the action of external characteristics, of which the main flow. The loss of mud refers to the size of the loss and the quality of the mud cake formed. Therefore, the mud purification system on mud treatment is good or bad for drilling or crossing construction is very important.

GN 1000 HP rig mud system for Turkey

Rheological parameters


In the field of construction, the rheology of mud is usually described by plastic flow pattern, and its parameters generally include viscosity, dynamic shear force, static shear force and thixotropy.


1, Viscosity and dynamic shear force

1) The viscosity of mud has a great influence on the horizontal directional drilling construction. The main changes are as follows: When the viscosity of mud is high, it has strong carrying capacity and good performance of wall protection, so it is hard to leak. However, the increase of viscosity will increase the flow resistance of mud, increase the power consumption, reduce the impact cutting ability of the drill bit, and affect the drilling speed. At the same time its deteriorating purification capacity, increasing pump resistance, affecting the cleaning time. When the viscosity of mud is low, its carrying capacity and protecting performance are worse. Therefore, different viscosity muds should be prepared according to different situations.

2) The dynamic shear force reflects the ability of the mud to form a space grid structure when flowing in the stratosphere. In horizontal directional drilling construction, dynamic shear ratio (the ratio of dynamic and plastic viscosities) is usually used to indicate the shear thinning strength.

2, Static force and thixotropy

The static shear force of slurry reflects the suspended debris carrying capacity of the slurry. The thixotropy refers to the property that the slurry becomes thinner (lower shear force) after stirring and thickens (increases the shear force) after standing. In horizontal directional drilling construction, the mud is usually required to have good thixotropy.

Loss of parameters

1) Loss of mud is an important property of mud and is closely linked to the wall-making properties of the mud, especially when it passes through unfavorable formations such as looseness, fragmentation and water instability.

2) The fluid loss of mud is mainly related to the type of bentonite, degree of hydration and dispersion, density of mudcake and other factors. Slurry filter loss is small, thin and dense mud cake, is conducive to making the wall hole, the mud filter loss, coarse and loose mud cake is not conducive to protecting the hole wall.

More question about solids control,please contact GN

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Feb 25

As a well-known centrifuge manufacturer in China, GN solids control manufactures a full range of centrifuges jointly developed with the well-known Swiss brand of centrifugal hydraulic drive system, full hydraulic decanter centrifuges to meet the high standards of domestic and foreign customers. Decanter centrifuge cone, drum and screw propeller hydraulic drive system driven by a motor to form two oil pumps on the hydraulic motor and hydraulic differential drive. GN solids control The biggest advantage of a full-hydraulic decanter centrifuge is that it can be used for the separation of highly concentrated slurries under high temperature.

Decanter centrifuges manufactured by GN Solids Control are widely used in sludge dewatering, sludge treatment and suspension treatment; concentrated sewage or sludge; clarification of different types of liquids; separation of three-phase mixtures, Soluble liquid phase and a solid phase separation; According to the size of the particle size of the wet suspension in the classification of solids;

GN Solids Control Decanters Centrifuges are mainly used in industrial solid-state drilling system; drilling waste disposal system; oily sludge treatment system; Trenchless mud treatment system; shield piling construction mud treatment system; environmental pollution Mud treatment; chemical pharmaceutical separation applications; solid-liquid separation of the mining industry; food and beverage industry separation applications.

GN solids control Full hydraulic centrifuge Full hydraulic system includes: A Hydraulic pump B Drum drive Hydraulic motor C Screw drive (hydraulic differential). Hydraulic pump A delivers the hydraulic oil to the screw drive and the drum drive via two separate lines. Motor A1 drives the integrated hydraulic pumps A2 and A3. Each working line is equipped with its own hydraulic pump and control. The pump contains all setting devices, safety valves and pressure gauges. Through this system, during continuous operation of the centrifuge, independent and continuous manual stepless speed regulation can be performed on the speed of the drum and the differential of the helix.

More question about centrifuge,please contact GN solids control

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Feb 10

OBM which is known as Oil-based mud , the Oil-based mud is a mud where the base fluid is a petroleum product such as diesel fuel.


When treating OBM,most user need make OOC as low as they can, to recovery most fluid,because oil based mud is very expensive and if many fluid get away from drilling fluid,it will mean left fluid will pollute the environment,and some government not allow it

Based on this situation,GN engineer team design drilling cutting management system -GNCM-40,to recovery most fluid,and let user easy to treat discharged solids part

This system is mainly include Vertical cutting dryer and decanter centrifuge,and speed of centrifuge was advice adjustable to make separate result best

The cutting point of vertical dryer is 0.25-0.5mm,and most solids part will separate out,and centrifuge will treat rest fluid,the cutting point was 2~5μm,after that,most useless solids part will be removed,and the fluid can back to mud system to be reused

The OOC(oil on the cutting) after vertical dryer can be under 5% mostly,and this percentage means the solids part not include much fluid,and sludge treatment quantity reduce a lot,many cost for sludge management can be saved

Some point about vertical cutting dryer:

The screen of vertical cutting dryer is spare parts,local engineer should check it every 3month,to make sure equipment always stay at best state

The vertical dryer was good for treating cutting from shaker well,but for solids from centrifuge can’t refeed to vertical dryer because of solids size not suitable,and the solids will stick the screen

For now, GNCM-40 system already succeed running in many country’s and help client save money for waste manage

Please visit GN solids control learn more detail if interested about it

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Feb 04

As solids control equipment supplier,GN name part number for spare parts of different equipment like shale shaker,centrifuge,vertical cutting dryer,Engineer is always keep developing equipment the model number is freshing every 1~2 years,it caused one equipment can use spare parts based on different part number,when client’s need maintenance,we always advice provide part number,for our exact and fast find suitable product for equipment

For stable deliver time,GN may have not only one spare parts supplier to keep fastest supply for client,some time,one supplier’s ability is not enough for some big project,ans we will name different part number based on supplier,to make sure client get same quality product,and better use experience

GN also was shale shaker replacement screen supplier,we will meet some client use mesh number and screen to find suitable replacement screen,but we find it will make mistake sometime,because most shale shaker supplier will use API/Part number to supply right screen,and mesh/size will make misunderstand

We advice client provide screen’s OEM part number or shaker model and API number to make sure we supply suitable replacement screen to do solids separation,and get good result

Replacement screen is special product for solids control,because wrong API number choose will cause rest equipment not work well,so,we use part number to help client find right product and save unnecessary lost

More question,please feel free to contact GN solids control

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Jan 28

When make plan for placing solids control equipment like shale shaker/centrifuge/vertical cutting dryer/pump in jobsite,we need consider keep whole system running well and not use much space

Some engineer in drilling company like put equipment in top of mud tank,this way is easy to manage drilling fluid,and transfer will be easy,some big drilling work will choose this way,and the feeding pump install at side of tank,the whole system is more compact

In some mud service company,engineer need more useful volume for drilling fluid,solids control equipment and mud storage are separated;also it won’t need much equipment,the owner will install equipment in the skid,make concrete plinths in bottom,this way is easy to check equipment’s work state,better for maintenance,and can change pipe design,fit different request,in most LMP,they choose this solution,the skid can’t move,but easy to manage

For some small project,equipment not much,and drilling fluid request not high,the worker will put most equipment at land,and some important equipment will install in one small tank,the system will separated like different modular,can fit different kind drilling work,no need much equipment

When  compare produce cost,mud tank will be expensive for shipment,some client will choose to build it at local,GN will support give advice by design or drawing,the skid price is not that high,but it not good for move some time,most time just mud service company will choose it,maybe they will need telescopic,GN have this design;some HDD drilling client,prefer package equipment tank,and other equipment separate,to save unnecessary cost,GN did it too,because we have a experience engineer team,to give best support for client

More question about solids control,please view GN website

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Jan 19

GN solids control is equipment manufacturer and package system solution company

It’s a most technique used in a drilling rig to separate the solids part in the drilling fluids that are crushed by the drill bits and carried from well surface. Normally, normally one solid control system contains five stages: shale shaker/vacuum degasser/desander/desilter/centrifuge,and most equipment install in top of mud tank

Most engineer will call mud system as 4 phases solids control process or the 5 phase purification system. like shale shaker, vacuum degasser, to Desander cone, Desilter cone, and the decanter centrifuge. Based on different working principle and separation point. The well drilling will request this system to process drilling fluid. but, with different well depth and drilling condition the system designer need make different configuration and different result.

Solids control is most use in oil and gas drilling,but for request of separation,more and more industry plan to use it

1.Separate big partical and impurities from drilling fluid,to clean it and recycling use,to save keep less cost,and less discharge,for better environment,normally will use shale shaker/degasser/decanter centrifuge/desander/desilter/related pump and mixer

2.In some river clean project,need remove dirty mud from river water,decanter centrifuge will be good choice to control solids part from 2-5μm

3.When meet mining job,solids control will give support by separate and recycling,it will request shale shaker and decanter centrifuge mostly

4.Some dewatering system will need decanter centrifuge to treat polymer,to make better solids control

5.Few builing company are trying use solids control to reuse water and material,avoid un necessary cost

6.Liquid food area will request decanter centrifuge to raise quality,we supply solution too

GN solids control welcome all separation request,and give best solution

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Jan 12

GN solids control provides the engineering and design of 3-phase separator internals that target high gas volumes and primary L/L dispersions.

Our scope includes the design, engineering and delivery of


  1. a) The inlet gas distributor
  2. b) The foam breaker along with the the L/G separator
  3. c) The dimensional design of the inlet compartmeent, the settling compartment and

the product outlet compartment

  1. d) The separation of the aqueous and hydrocarbon liquid phases utilizing ether plate pack type or wire mesh coalescers Ensepatec provides a process guarantee for


1) The removal efficiency of liquid droplets in the gas stream and the maximum liquid content in the outlet gas stream

2) The maximum content of water in the oil phase

3) The maximum ppm-level of oil in the water outlet flow


Materials of constructions are high grade stainless steel or nickel-based alloys


 This design eliminates the need for a liquid interface controller. Both the oil and water flow over weirs where level control is accomplished by a simple displacer float. The oil overflows the oil weir into an oil bucket where its level is controlled by a level controller that  operates the oil dump valve. The water flows under the oil bucket and then over a water weir. The level downstream of this weir is controlled by a level controller that operates the water dump valve.

The height of the oil weir controls the liquid level in the vessel. The difference in height of the oil and water weirs controls the thickness of the oil pad due to specific gravity differences. It is critical to the operation of the vessel that the water weir height be sufficiently below the oil weir height so that the oil pad thickness provides sufficient oil retention time. If

the water weir is too low and the difference in specific gravity is not as great as anticipated, then the oil pad could grow in thickness to a point where oil will be swept under the oil box and out the water outlet. Normally, either the oil or the water weir is made adjustable so that changes in oil/water specific gravities or flow rates can be accommodated.

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Jan 04

As the main part of solids control system,Decanter centrifuge is one of GN’s most important protect
There is some point user should mention when installing and using:
1. The liquid discharge port should use soft tube when transfer, to avoid effect centrifuge’s balance when running
2. Hydrodynamic coupling will be installing in fixed speed centrifuge,for spped raise slow and working current not over limited,,this unit can prolong centrifuge’s service life
3. Limited system for centrifuge is important when equipment running,like electriclty limited,when the screw blocking by treated material,the momentary current will be very high,limited system will find it and cut power at first time to protect machine,GN’s centrifuge make overall protect design to keep solids control work running well and equipment life longer
4. Keep watching the state of equipment is very useful,the whole centrifuge will start shake when blocking,install detector to the control system will help user make first time decision to solve problem
5. Temperature of equipment was indicate when working,for example about bearing,the temperature will be very high when oil shortage,it will broken if do not have action,the motor’s temperature will be very high when screw sucking by material
6. Schedule regular time to get active, and stick with it,and do regular maintenance can keep quipment at best state and service longer,tosave money for buying new one,for example,the tiles of screw should be fixed after long time using,or the droped part will damage whole screw
7. Most point of using centrifuge is keep bowl running balance,or it will damage very fast,so,check and test balance is necessary after fix or maintencance

Keep checking the equipment is never wrong to make separate well and service longer
More detail,please contact GN solids control

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