During the last week of golden September, the government is business for the preparation of the mega even: Military Parade and celebration for 70’s Birthday of China. And GN Solids Control is busy on equipment delivery every day. Most products are for international clients to let world know more about MADE IN CHINA.

One of the shipments is high speed decanter centrifuges and centrifugal pumps for Russia client for oil field application.
The 2 sets of high speed decanter centrifuge are GN 14 inch (360mm) diameter bowl decanter centrifuge which has a length over diameter ratio of 3.5:1. The decanter centrifuge is with high speed up to 4000 RPM. The bowl of the decanter centrifuge is made from centrifugally casted duplex stainless steel. The impeller of the centrifuge bowl is protected by tungsten carbide hardened tiles to maximize the GNLW363 centrifuges operational service life between overhauls. Furthermore, the centrifuge is equipped with replaceable tungsten carbide inserts at the feed distribution and solids discharge zones for long lifetime and easy maintenance. The unit also has Tungsten Carbide plows to continuously clear the solids discharge area. All bearings fitted to the GNLW363 centrifuge are SKF premium brand bearings for longer life time and reliable operation.

There are many centrifugal pumps in the shipment. Compared with other Chinese pump suppliers, GN Solids Control centrifugal pump is with below advantages:
1) GN centrifugal pumps are fully interchangeable with a popular old brand. All the sizes and spare parts are all interchangeable. It helps clients to replace the pump easy. And it also helps clients to source and stock spare parts easily.
2) GN centrifugal pump casing and pump impeller are made from hard ductile alloy. The higher standard material increase abrasion resistant capability of GN pump compared to competitors pump.
3) All bearings of GN centrifugal pumps are from top brand for reliable performance.
4) The skid for holding the pump and motor is made from casting instead of welding to provide reliable operation and less vibration in a result to extend the pump and motor life.

Besides centrifugal pump, GN Solids Control makes other kinds of pumps for various applications. Below are some of GN made pumps:
1) Solids and sludge transfer vacuum pump
2) Submersible slurry pump
3) Mud shearing and mixing pump

A batch of drilling mud shale shaker are ready for shipment. The shale shaker will be dispatched to Tianjin sea port for sailing to Indonesia client in the coming days.

Vibrating Shale shaker is one of the main processing equipment of drilling mud solid control system for oil and gas drilling rigs. It is a repeated order the Indonesia client giving to GN Solid Control. Before this order, the client is already has many GN Solids Control mud processing equipment running at his rig site. They are happy with GN Solids Control equipment performance and GN services, and repeated order to GN Solids Control once they got new projects and have demands for new mud processing equipment.

Shale shaker is the first stage solids control equipment of mud purification and separation in the drilling mud system, its importance is self-evident. The performance of drilling mud solids control shale shaker will determine the mud purification performance of the whole solid control system to a great extent, and it is importance to the drilling activities.

Advantages of GN Solids Control shale shaker:
1) Patent design shale shaker deck angle jacking system. It can be adjusted while the shaker is working. The jacking system is mechanical deck angle adjustment with reliable performance.
2) Patent rubber sealing design for shale shaker deck and screen. It can project the shaker deck and extend shaker screen servicing time. And the insert type sealing rubber is easy for replacement. It is avoid to use bolts or screws.
3) Shale shaker bottom deck made from Stainless Steel for long service life.
4) Heat treatment on complete shale shaker deck for High G force operation. The adjustable G force is up to 8 G.
5) Pretensioned composite frame shale shaker screen for better separation and longer lifetime. The wedge type screen fixing is for fast screen replacement.
6) Famous Brand Vibration Motors: CN EX, IEC Ex, ATEX and UL Certified for clients’ optional.
7) Electrical components of the control panel: SIEMENS, Schneider Brand
8) Flexible feeding type including Weir Feed, Top Feed, and Hopper Feed for different applications.


Shale shaker is the most popular separation equipment of drilling mud system, no matter for oil and gas drilling or for non-oil drilling field, like for piling, micro tunneling, CBM, water well drilling, mining, or other construction separation system.

Shaker deck angle is an importance factor to affect the shaker performance. The suitable shaker deck angle can ensure a better separation performance, can enlarge the mud handling capacity, and also it can enlarge the shaker screen lifetime. Per different mud condition and different mud flow, the shaker deck angle may be different to reach a better performance.

For different shaker brand, the shaker deck angle adjustment system design is different. GN Solids Control patent design shaker deck angle adjustment system is welcomed by operators.

The operators like GN Solids Design shaker deck angle adjustment system as below reasons:
1) GN Solids Control shale shaker deck angle can be adjusted during shaker running, while most other brand shakers have to be stopped before adjust the shaker deck angle. It can save time and simplify the operation.

2) GN Solids Control shale shakers utilize Synchronous deck angle regulation system.
It is Mechanical Deck an¬gle adjustable device which can working while shaker is working.
And the Synchronous deck angle regulation system can ensure both side angles changed at the same rate on matter operated from which side. While for other brand shakers, operators have to change the shaker deck angle from one side, and then change another side to the same degree. It takes longer time.

3) GN Solids Control utilizes Ratchet wrench to change the shaker deck angle. The Ratchet wrench is in the tool box on the shaker deck.

Another advance of GN Solids Control shale shaker is the sealing rubbers. GN Solids Control shaker deck sealing rubber is inset type. Compared with screw fixing type, it is reliable for working, and easy for maintenance and replaced.

This week, a batch of drilling waste management equipment is under running test before delivery. It is a full package of drilling waste management system for oil and gas drilling field. After proved qualified by the running test, the drilling waste management system will be packed and shipped to Russia client by international railway shipment. The drilling waste processing equipment for the Russia client will be used for treat oil based mud and oil based cuttings in their rig site.


Below is the major processing equipment included in the containerized drilling waste management systems:

1) Vertical cuttings dryer
Vertical cuttings dryer are the major processing equipment for oil based mud and oil based mud cuttings. It is an effective machine to recovery more valuable drilling mud. After VG dryer, the oil on the cuttings can be lower down to 3% ~ 5%.

2) High speed decanter centrifuge
It is 14 inch high speed decanter centrifuge in the cuttings drying system to using together with vertical cuttings dryer. As the drilling mud recovered from vertical cuttings dryer is too heavy to reuse. High speed decanter centrifuge will be used after it to remove ultrafine solids and reduce the mud weight.

3) Containerized dewater unit for chemical dosing
It is a 3-tank automatic chemical dosing system in the waste management system to help the centrifuge to remove ultrafine solids smaller than 2 microns. As the high speed decanter centrifuge is gravity separation equipment. It can only remove 90% solids above 2 micron. For the centrifuge itself it cannot remove ultrafine solids smaller than 2 microns.

All feeding pumps, connection pipelines, and control system inside the system for included for a turnkey solution.

Besides the mentioned drilling waste management equipment, GN Solids Control also make others waste management equipment, like screw conveyor, solids vacuum transfer pump, drill cuttings solidification unit, big bowl centrifuge 18inch, 22inch and 30inch, automatic tank cleaning system, oily sludge treatment system, etc…

Recently many new clients and old clients contact GN Solids Control to ask for information and request quotation for solids and sludge vacuum pump. GN Solids Control vacuum pump has a very wide application.

Only take the oil field for example, the vacuum pump can be used for oil tank cleaning, vessel tank cleaning, for oil base mud clear-up, for oily sludge suction and transfer, for transfer the drill cuttings from shale shaker, mud cleaner and decanter centrifuge (replace screw conveyor), etc…

Clients can visit GN website to check the job site working videos about the vacuum pump operation: http://www.gnsolidscontrol.com/video/gn-drilling-cuttings-or-sludge-vacuum-transfer-pump-working-video

GN Solids Control has 3 sizes vacuum pump to suit for different applications.
1) GNSP-40B. It is the biggest model. It is skid mounted design. Max Capacity (m³/h) of the 40B pump is 40m³/h. But it is requested a big air consumption: 17m³/min (600CFM). If supplier air by air compressor, the air compressor power should be 90kw or 110kw.

2) GNSP-20B is a middle size. It is a portable design for fast movement. The max. capacity of the 20B pump is 20m³/h. The air consumption is smaller than 40B pump. It is 8m³/min (280CFM).
3) GNSP-10B is the smallest vacuum GN Solids Control made. The max. capacity of the 10B pump is 10m³/h. The air consumption is 4.3 m³/min (150CFM) 8m³/min (280CFM). It is easier to source.

For the middle size 20B and the small size 10B vacuum pump, the operation is the same. During the vacuum pump working, the suction and discharge process conduct alternatively as the setup time in automatic mode.

Other Material transfer applications of GN Solids Control vacuum pumps:
1) Hazardous waste suction and trasnfer
2) Barge holdings and vessel bottom clean out
3) Bulk tank and silo transfer of material
4) Sand; Course, fine, conventional and frac sand
5) Diatomaceous earth
6) Animal waste etc.

In order to know if the oily sludge and waste water is suitable for decanter centrifuge separation or not, the necessary test should be took to know the material situation.

But how should you do the test if you do not want to buy a big decanter centrifuge before you know if it suits your material or not? And you do not know which kind of decanter centrifuge model you should choose? If send the material to the centrifuge supplier for test, firstly, it request a certain quantity material in order to know the real performance, the shipment cost maybe high. Secondly, most hazardous material is prohibited to leave the storage job site. How should you do?

Lab test centrifuge is widely used in this situation. Operators can set up the rotating speed of lab centrifuge to find out the material situation. But unlike the real centrifuge, material after lab centrifuge is still in the same tube. How should you know the performance?

Below are the procedures of Lab test centrifuges processing for oil sludge or waste water may give you an idea:

Below are the procedures to test the sludge by lab centrifuge

1) Setup G force 1200G, Setup Separation time: 2 min. If the solids can significantly layered, and the liquid looks clear, it mean the sludge or waste water is very easy for centrifuge separation.

2) If there is not much difference after 1200G separation, setup G force to 2000G, setup separation time 2min. If the sludge or waste water can layered significantly at 2000G, it means the material suits for centrifuge separation.

3) If 2000G separation is not workable, increase the G force to 2500G by separating 2 min., if the oily sludge or waste water can settle down and the liquid looks clear, it means the material is a little bit difficult for centrifuge separation. But the centrifuge is still workable.

4) If the G force need to up to 3000G~4000G to make the solids settle down clearly, it means it is difficult for centrifuge separation, request high speed centrifuge.

5) If it is must be 4000G or above to make the solids settle down clearly and the liquid look clear, it means the material is very difficult for centrifuge separation, you will need to find other way as instead.

Vertical cuttings dryer and High G dryer is the 2 major processing equipment for drilling cuttings treatment. But many clients do not know the difference. Here is a sample introduction of the 2 drilling waste management to help clients find the right model equipment:

1) Vertical Cuttings Dryer (VG dryer)

Vertical Cuttings Dryer utilizes centrifugal force to dry drill cuttings with oil or synthetic base. The stainless steel screen basket rotates at speed up to 900 RPM, which generates G force up to 420 G to separate the drilling cuttings. The solids bigger than the screen opening will be blocked by the screen and fall down, the fine solids and liquid will go through the screen and recovered by the dryer. Tungsten carbide protects the flights from abrasive solids and ensures long operational life. This aids in maintaining a constant gap between the scroll and screen bowl, which is crucial for proper operation.

2) High G dryer (It is also called as cuttings dryer, HG dryer, or high G drying shaker)

GN High G Force Drying shaker is design for primary solids control and drying the cuttings from the primary solids control equipment (solids control shale shaker, mud cleaner, desander, and desilter), recover useable drilling fluids and ultra-fine sands, provide solids in a consistently stackable and conveyable form and requires no expensive chemicals or polymers.

GN high G drying Shaker can generate G force Up to 8.0 G. The G force is adjustable. The high G force and achieve a dryer solids separation and recovery more usable drilling fluids, while the shaker screen servicing time will be shorten. The lower G force and ensure a longer life time of the shaker screens. The operation people can balance the performance and screen servicing time depending on the mud condition.

In many case, the drilling rig will utilize water base mud in some stage and then oil base mud will be used for deeper drilling. Clients can choose booth VG dryer and HG dryer in their pitless drilling cuttings recovery system. Equip a dual discharge on the screw conveyor for feeding. Job site can choose to treat with VG or HG flexibly.

This week, GN Solids Control finished fabrication of another 2 sets Hydro Vac Slurry Treatment dewatering system. The 2 sets Hydro Vac Slurry Treatment dewatering system is designed for construction field waste water treatment. They will be shipped to the sea port for an America client.

The hydro vac construction slurry separation system is composed of below treatment modular:

1) Feeding Hopper modular for waste collection: A hopper tank with coarse screens to collect the waste material and remove the big particles, like rocks.

2) Scalping shale Shaker separation modular. The scalping shale shaker separation modular is composed of a Scalping Shale shaker and a hold tank package. The scalping shale shaker is equipped with special metal frame screen with big opening to remove big solids. It can reduce the wearing of next processing equipment. The recovered liquid will be collected by the mud tank under the scalping shale shaker.


3) Double deck shale shaker unit for fine solids separation: the double deck shale shaker is located in #2 mud tank. As the waste material is already pre-separated by scalping shale shaker, the double deck shale shaker is equipped with normal API shaker screen for D100 separation.

4) Hydro Vac Slurry Treatment modular: Desilter hydra cyclone is used in this modular for hydra separation. The cut point of desilter modular is up to 20microns.

5) The final modular is centrifuge dewatering unit. Big bowl and High speed decanter centrifuge will be used together with chemical dosing system for dewatering treatment. GN Solids Control makes different sizes of decanter centrifuges to suit for difference types of waste material application. The centrifuge bowl size varies from 9inch, 14inch, 18inch, 20inch and the biggest bowl 30 inch.

If clients want more information of the Construction slurry dewatering system, you can contact GN Solids Control. Besides the Construction slurry dewatering system, GN Solids Control can also make automatic tank cleaning system, waste water treatment system, oily sludge separation system, etc…

GN Solids control makes complete solution for oil field oily sludge separation, it can get output solids with limited oil content, water with limited oil and soil, and oil with low content oil and soil.

GN oily sludge separation system can be used to treat below materials, it is the typical oily sludge GN Solids Control oily sludge separation system can treat, but it not only limited to below materials:
1) The oily sludge and waste from Crude Oil storage tank cleaning sludge
2) The oily sludge and waste from Refinery plant waste oil sludge
3) The oily sludge and waste from Drilling waste disposal.

GN oily sludge separation system is including below processing unit:
1) The solids and sludge vacuum transfer pump unit. It is 100% Air driven pump without electric driven parts.
2) The pre-mixing and heating system, it is equipped with slurry transfer pump, mud agitator, mud tank, and heating system.
3) The shale shaker separation system with mud tank and heating system.
4) Dewatering centrifuge unit for solids and liquid 2-phase separation
5) Disc centrifuge for 3-phase separation: solids, water and oil

Below is some popular questions clients are normally concern:
1) The air compressor was excluded. Can they send a quotation or specification?
GN can send clients the specification for the air compressor, as GN is not the manufacturer for air compressor. It’s better client to buy for them. GN need to know if clients need GN to provide the Vacuum pump for suction of the oil sludge to recommend the suitable model air compressor.

2) How will they heat up the sludge to 70 degrees C? Is it Electrical or by a heat exchanger? I did not see the price for the heat exchanger (Boiler)
GN answers: You can use the hot water boiler to heat up by steam, or you can use hot oil boilers. We already have the heating lines inside the tank; you can feed it with hot steam or hot oil. The volume of the hot heat depends on the ambient temperature. What will be the minimum ambient temperature for your operation? So we can calculate the size of the boiler for you.

3) In the Process Flow Diagram “PFD”, they mentioned about the water treatment unit, it was not included in the price
Mostly clients does not need this one, since GN unit already meet you requirements.

4) What is the maximum solid content that can be fed to the decanter? Before feeding the the shale shaker, in the premixing tank, you need to control the solids below 20%, to the decanter the solids should be below 20%.

Liquid Mud Plant is big tank mud system for mud mixing and storage for drilling rigs. It is used to prepare qualified drilling fluids for drilling rigs.

GN Solids Control can do the Rapid Liquid Mud Plant (LMP) to suit for different applications. The Rapid Liquid Mud Plant can also be called as RDLMP (or Rapid Deployment Liquid Mud Plant), or Swift Liquid Mud Plant. The plant is good, stackable and modular.

GN Solids Control has done Rapid Liquid Mud Plant (LMP) for many Chinese domestic and international projects, like for COSL (China Oil Services Limited) and CNOOC (China National Offershore Oil Company). Each Tank of the Rapid Liquid Mud Plant (LMP) can up to 500BBL, or per clients’ request, it is stackable and modular. http://www.gnsolidscontrol.com/drilling-fluids/liquid-mud-plant-lmp-china-oilfield-services-limited-cosl

The Liquid Mud Plant is always composed of horizontal mud mixing tanks, vertical mud storage tanks, vertical silo tanks, decanter centrifuge system, mud mixing pump and hopper system, mud shearing system, and some time, the shale shaker systems.

Mud agitator is the major equipment of liquid mud plant. There will be big quantity mud agitators used in liquid mud plant. GN Solids Control offers a options of mud agitator:

Option 1 is the normal Chinese standard: The agitator is equipped with worn gearbox reducer. It is economic standard.

Option 2: the agitator is equipped heavy duty helical bevel reducers. The torque of helical bevel reducer is much bigger than the same power worn gear reducer. Although the helical bevel reducer cost much than the worn gear reducer agitator, but it can save power.

Decanter centrifuge package is used in the liquid mud plant to reduce the mud weight. GN Solids Control equipped the decanter centrifuge unit with its feeding screw pump on a telescopic skid, and it is the same skid with mixing pump and hopper unit for easy movement.