Many customers wonder: we choose a centrifuge with max. 30cbm capacity, why the real capacity is far more less? Is it the centrifuge un-certified? Similar to a car, the car manufacturer will give a max. speed of the car can reach, but actually, it can never reach it. It widely depends on the drivers skill, the road condition, the speed limitation, the requirement of people in the car, and so on. And centriguge is the same.
To answer this question, we should know the exact meaning of Centrifuge Capacity. On decanter centrifuge data sheet, there are different description for treating capacity: Max. capacity, typical capacity or a performance chart. Typical capacity is more widely used to specify the centrifuge performance. The Typical Capacity on centrifuge data sheet is gaven under a certain condition, it is not for general condition.The mafanucturer will give description of it. 
Mostly, centrifuge manufacturer give typical max. capacity as hydraulic test. As different jobsite have different mud condition. For different mud density and viscosity, the centrifuge handling capacity is much different. It is difficult to compare parameters for customer if the max. capacity is under different condition.
Below are somes reasons may affect centrifuge performance:
1) Centrifuge size : the bowl diameter and bowl length
It is the main parameters to affect centrifuge capacity. Normally speaking, the bigger of the bowl size, the bigger of centrifuge max. capacity (hydraulic test). But it is not meant big bowl centrifuge is the best choice for bigger capacity. Customer should consider the material condition, the result they want to get after separation to choose the suitable model. For different mud condition, specially for drilling waste management, different centrifuge model suits.
2) The mud condition before centrifuge treatment
The mud condition have big effect on the centrifuge real capacity. For centrifuge with hydraulic test 30cbm, with mud, capacity may half reduced or even more. And the heavier of the mud, the smaller the capacity.
3) The parameter settings of the mud
The bowl speed, conveyer speed and the fluids outlet height setting will also affect the centrifuge capacity and the centrifuge performance. So when the centrifuge arrived jobsite, per customers detailed request, GN Solids control company recommend customer to test with their real mud to find out the best separation result, the max. capacity of the centrifuge under this condition. Or they find an equal of capacity and separation result.
4) The performance result customer choose will also affect the capacity. Just like a car, if you want very smooth driving, the speed should not be as high as normal.
For professional users, they can have an idear about the real capacity of centrifuge from data sheet manufactuere give with their rich experience. But for most customers, it is better to have more communciatios with the centrifuge manufacturer, let them know more of your project, to make sure a suitable centrifuge model.
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Published: 25 April 2015
GN is making 4 complete sets HDD mud recovery system for CHINA PETROLEUM PIPELING BUREAU(China CPP). The first 2 sets is ready for shipment now.
Many visitors to GN Beijing factory showed great interest in this customized system. Here is a brief introduction of the system.
It is a 4-stage mud solids control separation system, with capacity can reach up to 1000GPM. The system is including following equipment:
1) 1 set Mud desander cleaner GNZJ705-2S, with double deck shale shaker GNZS705. It is for the first and second stage separation.
2) 1 set Mud desilter cleaner GNZJ705-12N, with double deck shale shaker GNZS705. It is for the first and third stage separation. 
3) 2 sets middle speed decanter centrifuge GNLW452. It is the 4th stage separation machine. Centrifuges here are used for reduce the mud weight. As the total system reaches up to 1000GPM capacity with dual shakers. Here we matched 2 sets decanter centrifuge for a bigger capacity. It can separate solids to 5~7microns. With centrifuge, the mud can be separated more clean and suits for more deeper drilling.
4) To avoid mud settle down within the tank, GN equipped 1 ea mud agitator under each decanter centrifuge. So totally 2 mud agitators for the system.
Both of the double deck shale shaker, the bottom deck screen can be used for shale shaker. The upper deck is used as desander or desilter separator. The 2 shakers are collected through mud distribution box, and controlled by pipes and vales for mud feeding.
The double deck desander mud cleaner and desilter mud cleaner are equal to 2 sets single deck shale shaker, a separate desander and desilter machine. But it is more compact than the 3 separated machine and takes a smaller footprint.
It is a 2-tank mud system. The same with all other systems to CPP, the tank size is the same with 20ft standard container. And it is equipped with container lifting eyes. 2 sets mud cleaner on tank 1#, both of the mud cleaners are mounted on a 20ft size ski8d with frame. While the dual decanter centrifuges located on tank 2# are mounted on another 20ft skid with frame. It is easy for customer to move and mount equipment at jobsite. They only need to lift or remove the 20ft skid frame during shipment.
If you have interest on the system and want more information, contact GN Group freely or send email to This email address is being protected from spambots. You need JavaScript enabled to view it. for inquire.
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Published: 19 April 2015
Decanter centrifuge is the most important equipment for drilling waste management field. It can be used for waste water treatment, slurry separation, oily sludge separation, etc…
Application of decanter centrifuge for waste management field
1) Decanter centrifuge can be used together with high G shale shaker to treat water base mud drilling cuttings. Water base drilling cuttings is treated by high G shale shaker, after shaker, goes to decanter centrifuge to separate the fine solids.
2) Decanter centrifuge can be used together with vertical cuttings dryer to treat oil base mud and synthetic based mud drilling cuttings.
Oil base mud and synthetic based mud drilling cuttings from tank bottom, shale shaker, desander desilter or offshore rig, are treated by vertical cuttings dryer first, after vertical cuttings dryer, goes to decanter centrifuge to separate the fine solids.
There are so many companies declared for decanter centrifuge manufacturing, but do you know how to choose the right decanter centrifuge and optimize the centrifuge performance?
Firstly, the reliable brand should be chose depends on the applications. For centrifuge brand section, you should check with the supplier, if their centrifuge have been used for the similar applications and the performance, or at least their reference on waste management field.
If their centrifuge mainly used for solids control mud system, most probably, it will not suits for waste management. As for waste management, the material is more critical, high solids content and high abrasion. If request the centrifuge should be very reliable on design (feeding port, solids discharge port, screw protection, control panel, etc…) and excellent on material choose.
Secondly, choose a suitable model per your application: high speed / high G force / big bowl / super high speed… There are so many design. You should choose the most suitable model per your material condition and the performance you want to get. 
For example, if you want a normal system to do service, you want the system can treat more kinds of drilling cuttings, OBM, SBM, WBM, GNLW363CG-VFD decanter centrifuge should be suitable. It is a 14 in centrifuge with adjustable speed for different application.
Then, even for the same centrifuge model, the different fluids level height, bowl speed, conveyor speed, feeding capacity, jobsite layout, feeding type will affect the performance greatly. That is the reason why centrifuge request a professional operator together. Decanter centrifuge has high request on operators’ capability than solids control system. Many jobsite, they have good machine, but do not equipped with professional operator, so also problems.
GN Solids Control as China top manufacturer on decanter centrifuge, welcome you inquire more questions on centrifuge, and visit GN for the training of centrifuge.
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Published: 11 April 2015
OTC (Houston) is the short name of Offshore Technology Conference. It is held every May in Houston TX, U.S.A. OTC is the world largest exhibition on oil and gas field. Every year, only 2000 companies come from worldwide for the big issue. Nearly all the big oil and gas companies will come to Houston for the show, including Baker Huges, Nabors Drilling, Shell, Total, Saudi Aramco, Sinopec, ExxonMobil, CNPC, BP, Chevron…
GN Solids America, as the first solids control brand from China, will join 2015 OTC oil show and show its advanced design equipment for drilling waste management equipment, like vertical cuttings dryer, high speed decanter centrifuge, big bowl decanter centrifuge, etc…
2015 OTC oil show details for GN Solids America
Address: Reliant Park Houston, TX, USA
Time: May 04-07, 2015
GN Booth No.:
Reliant Arena Booth A (290SF) No.: 9225-2 - Hebei GN Solids Control Co.,Ltd
Reliant Arena Booth B (200SF) No.: 6137 - GN Solids America LLC
Drilling waste management equipment for 2015 OTC oil show
1) 22 inch Big bowl decanter centrifuge, model GNLW553C-VFD
The centrifuge model is made per international high standard. It is a big bowl centrifuge specially designed for drilling waste management. The centrifuge is with a big bowl 22 inch dia. and 71 inch in length. As drilling waste management request higher standard equipment. With the specially design for drilling waste management field, this centrifuge performance excellent as well in solids control system.
Besides used for drilling waste management, GNLW553C-VFD is widely used for mud solids control system in rig site, especially in U.S and European, where the rig site do not use desander and desitler. All materials comes from shale shaker will enter into decanter centrifuge for treatment. Big bowl centrifuge with big capacity is suitable and necessary in these rig sites.
2) 14 inch high speed centrifuge, model GNLW363C-VFD
It is the most normal size decanter centrifuge. There are so many companies said they makes 14 inch decanter centrifuge. But it is not all of them can be used for drilling waste management. GN patent design with its excellent standard material makes its centrifuges has reliable performance while treating drilling cuttings.
3) Vertical cuttings dryer, model GNCD930D
It is the latest design vertical cuttings dryer from GN Solids Control. With good performance and feedback from worldwide jobsite. It is the most proper choice to for oil based cuttings.
Now good news is that, all above equipment is for sale. If you make orders, after the show, the ready equipment will be sent to you directly from GN Solids America Houston warehouse.
Awaiting for your inquires if you have any further questions.
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Published: 29 March 2015
At the beginning of 2015, GN get an repeat order from one of our valuable clients with 32 units of drilling mud decanter centrifuge with 40 units of screw pumps, we shipped them in 2 batches, the first batch 16 units centrifuges are shipped before Chinese traditional Spring Festival, and the rest 16 units are shipped after we come back from the long holiday.
The centrifuge is utilized for fine solids separation at high speed and barite recovery with low speed, there are 2 ways to get them used in different speed:
1 equipped with variable frequency drive control panel, it can adjust from 0 to 3200rpm. It is a easy way for operator, but the VFD control panel cost a lot.
2 equipped with different size pulleys, when you need to use it for different speed, you can just replace the pulley, it is a economic way.
Not only for Solids Control,these decanter centrifuges can also be used for drilling cuttings treatment system, dewatering system, both for oil based drilling mud and water based drilling fluids. To check the performance of GN decanter centrifuge applied for water based drilling mud, pls check the video here: http://www.gnsolidscontrol.com/video/water-based-mud-decanter-centrifuge-argentina
To check the performance of GN centrifuge used for dewatering system, pls check the video here:
http://www.gnsolidscontrol.com/video/gn-solids-control-drilling-mud-dewatering-system-working-video
GN C version decanter centrifuge is the most advanced technology centrifuge after years of improvements, we make such improvements according to the user’s feedback and suggestion, the most obvious advantage of C version decanter centrifuge compared with B version is the screw and bowl design changes. We will show the updated version decanter centrifuge both at CIPPE 2015 oil show in Beijing, China and OTC 2015 ( world’s largest and most professional oil show) in Houston, TX, Pls contact our sales to make an appointment and visit our factory.
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Published: 09 March 2015
GNLW363CG is a Dual Motor Decanter Centrifuge. It is the latest design high speed centrifuge designed and made by world leading manufacturer: GN Solids Control. The centrifuge is widely used in worldwide drilling rig job site.
GNLW363 is a 14 inch decanter centrifuge. GN offers 2 standard 14 inch centrifuge for customers’ option. High standard GNLW363CG is made from top ranking materials, to compete with U.S and European brand. Economic standard GNLW363CD decanter centrifuge is with the same design with high standard. The difference is that, some parts is chose from economic standard, but the material standard is still higher than normal Chinese brand.
Feb. is the New year month for all Chinese people. But it is one of the most busy month for GN. Besides 5 tank systems and other equipment, GN Solids Control dispatched 19 sets decanter centrifuge in this month.
1) 16 GNLW363CG dual Motor Decanter Centrifuge together with 20 pumps for an Africa customer.
It is only the first batch of the shipment. Another half (16 centrifuges and 20 pumps) will be dispatched weeks later.
The customer order the same model GNLW363CG centrifuge, with fixed speed control. GN offer different size of pulley and belt for different fixed speed. So customer only need to change pulley and belt, customer can get lower speed, high speed and middle speed for the same one centrifuge.
The 32 sets centrifuge will be used for barite recovery with lower speed, and for fine solids recovery with high speed.
2) 1 set GNLW363CG dual Motor Decanter Centrifuge together with 1 set vertical cuttings dryer dispatched for Africa mud service company.
They will be used for drilling waste management. With its patent design, GN vertical cuttings dryer GNCD930C can be used to treat both water base mud and water base mud. Even U.S and European dryers, they cannot treat water base mud.
3) 2 sets GNLW363CG dual Motor Decanter Centrifuge together screw conveyer and dewatering unit dispatched for a Middle east drilling company. The end user is a National drilling company. They saw our equipment running for their rigs, so appointed to buy from GN for their new projects.
Furthermore, totally another 27 sets GNLW363CG dual Motor Decanter Centrifuge will be dispatched for overseas customers in March.
For more information of GN Solids Control equipment, services and systems, welcome you contact GN group freely.
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Published: 28 February 2015