GN Solids Control is a specialized manufacturer for the drilling mud solids control and drilling waste cuttings equipment. The shale shaker is one of GN’s main products. For this main product, at this time all the model GN’s provided is the linear motion vibration mode. As per the requirement coming from different industry and the customer’s preference, GN’s shale shaker is classified by the treating capacity and application.

GN’s shale shaker is classified as 200GPM, 500GPM and 600GPM. The smallest model is always be used in the compact system for the job site with limited location area. GN’s 600GPM model could be used in both the common solids control and waste management system. When talking about the slurry feeding type of GN high G force drying shaker, there are 3 types used for different application. The 3 types of the feeder box are the top located design; back located design and hopper designed. For the top located design feeder box, the shale shaker is often proposed to use in the mud recycling system for the HDD projects. As the mud tank in HDD are always narrow, so there is no enough space of the tank surface to locate the shale shaker. In HDD project, the drilling mud are always fed to the shale shaker through the pump, the drilling mud come to the screen with very low pressure, so the drilling mud would come to the screen directly from the top located feeder box. While in the oil drilling projects, the drilling mud always comes out from the drilling hole with high pressure. Thus there will be a buffer box to reduce the high pressure of the drilling mud, the feeder box is designed like an “n”, and the drilling fluids need overflow into the shaker deck.

For the hopper design feeder box, it is specially used for drilling waste cuttings dryer system. As the waste cuttings are always very thick, and the fluidity is not as good as the drilling fluids. When delivered to the drying shaker by the screw conveyor, the waste cuttings have to get into the shaker via a large opening feeder box. For this type hopper, it is easy to let the cuttings get in and performance would be very well.

Screw conveyer also called auger. It is widely used in building industry, chemical industry, environmental protection, medicine, metallurgy, food industry, and so on. U-trough shaft screw conveyer is the most common model been used to transfer drilling cuttings in drilling waste management field. It can be feed or discharged at different section or port, very flexible in use. U-shaped conveyor trough is closed, and the cover can be opened. The cover material can be steel plate or good sealing, or Galvanized steel grating plate for easy observation. Depends on the diameter of the auger impeller, there are 12inch screw conveyer, 14 inch screw conveyer, 16 inch screw conveyer and 18 inch screw conveyer.

Below table is parameters for common model screw conveyer

Suitable maintenance can extend lifetime of screw conveyer and insure a reliable performance.
Recommend maintenance of screw conveyer for drilling cuttings transfer is as below:
1) Check the gearbox, bearings and other rotating parts, and add lubricating oil periodically
2) Check the screw conveyer impeller periodically, if there is serious wearing, repair and re-weld it  
3) Do not use the screw conveyer with overload.
4) If there is abnormal noisy during running, stop the screw conveyer immediately and check the reason.

Applications of drilling cuttings transfer screw conveyer
1) It can be used in level to collect drilling cuttings discharged from solids control mud system, like solids control shale shaker, desander, desilter, mud cleaner. And then another set screw conveyer used to transfer the cuttings to next process equipment.
2) Feeding for vertical cuttings dryer, and then transfer the solid waste discharged from vertical cuttings dryer

3) Transfer drilling cuttings or materials from one place to another

There are fixed speed control and variable frequency control for oilfield decanter centrifuge. For fix speed control panel, the centrifuge speed depends on the pulley and belt. The speed is fixed and cannot be change.
For VFD control panel for decanter centrifuge, the centrifuge max. running speed depending on the pulley and belt. Through the control of VFD panel, centrifuge speed can be adjusted from 0 to the max. speed, to from the set min. to the set. max. speed.    

There are normally 3 VFD control for decanter centrifuge through the VFD panel.
1) The first VFD is VFD control for main motor. Decanter centrifuge speed can be changed via change the frequency of main drive motor. Most centrifuge suppliers, they will choose VFD control for the main motor drive.
2) The second VFD is VFD control for back drive motor. The function of back drive motor is working together to change the centrifuge differential speed. Differential speed is the main factor to affect separation result.
Formula: Differential speed = Bowl input speed – conveyor input speed / the differential ratio.
The differential ratio speed is a fixed speed, when both Bowl input speed and conveyor input speed changeable, customer is more flexible to get more reasonable differential speed.
3) The third VFD is VFD control for centrifuge feeding pump. Many centrifuge suppliers, they do not choose this VFD control. GN Solids Control company VFD centrifuge with VFD control for centrifuge feeding pump and through PLC system to realize automatic smart control of the centrifuge.

GN Solids Control is China leading manufacturer on oilfield decanter centrifuge. Every year, they sell 200~300 sets different model centrifuges to worldwide countries, like U.S.A, Canada, Poland, Cyprus, Australia, New Zealand, India, Indonesia, Malaysia, Singapore, Thailand, Russia, Kazakhstan, Brazil, Algeria, Nigeria, Egypt, Iran, Iraq, UAE, Yemen, etc…

Besides oilfield decanter centrifuges, GN Solids Control offers linear motion shale shaker, mud cleaner for solids control and vertical cuttings dryer for drilling waste management. For more inquires, welcome you visit GN website or send mail to This email address is being protected from spambots. You need JavaScript enabled to view it. '; document.write(''); document.write(addy_text39048); document.write('<\/a>'); //-->\n This email address is being protected from spambots. You need JavaScript enabled to view it. for inquire.

Decanter centrifuge is an important separate machine for both solids control system and drilling waste management process.
GN solids Control is China top manufacturer for oilfield decanter centrifuge. GN makes decanter centrifuge bowl size ranged from 9 inch to 22 inch. To cater for different market customers’ request, GN makes 2 standards decanter centrifuge for oilfield.
1) High standard: It is made per international high standard; all material is chose from top ranking, bearings are chose from top famous brand, Germany SKF.
The high standard decanter centrifuge is used to compete with U.S and European famous brand. Quality reliable and price is much more cost-effective.
2) Economic standard decanter centrifuge: It utilizes latest design, some parts use economic standard material and bearing chose from economic famous brand, like NSK. GN economic standard decanter centrifuge quality is still better than normal China brand, and price is very good.

To thanking for the customers’ support in the past years, GN Solids Control China offers some decanter centrifuge in stock for sales. Centrifuge model list please see below:

Model 1: GNLW363AG 14inch decanter centrifuge   In stock for fast delivery & 25% big discount
Bowl dimension: 14 inch & 50 inch
Max. capacity / typical capacity: 200GPM / 132GPM
Max. speed / typical speed: 3900rpm / 3200rpm
Bowl material: SS316L
Screw protection: tungsten carbon tile
Design time / manufacturing time: 2013 / 2014

Model 2: GNLW363BG 14inch decanter centrifuge   In stock for fast delivery
Bowl dimension: 14 inch & 50 inch
Max. capacity / typical capacity: 200GPM / 132GPM
Max. speed / typical speed: 3900rpm / 3200rpm
Bowl material: SS316L
Screw protection: ceramic tile
Design time / manufacturing time: 2014 / 2014

Model 3: GNLW454G 18’’ big bowl centrifuge for waste treatment and waste water treatment
In stock for fast delivery & over 30% big discount
Design time / manufacturing time: 2014 / 2014
More details please refer here: http://www.gnsolidscontrol.com/drilling-fluids/oilfield-decanter-centrifuge-sale-30-discounted-price

Model 4: GNLW553-VFD big bowl centrifuge  Variable frequency control
In stock for fast delivery
Bowl dimension: 22 inch & 71 inch
Max. capacity / typical capacity: 484GPM / 400GPM
Max. speed / typical speed: 3000rpm / 0 ~ 2500rpm
Bowl material: SS316L
Screw protection: tungsten carbon tile
Design time / manufacturing time: 2014 / 2014