Category: decanter centrifuge

Drilling Mud dewatering centrifuge Unit for Europe Client

Recently 2 sets of drilling mud dewatering centrifuge units are ready for shipment for Europe client. Each set of dewatering centrifuge unit including 1 set of GNLW364FT dewatering centrifuge, 1 set of chemical dosing system, 1 set of feeding screw pump and 2 sets of containers.


The GNLW363FT dewatering centrifuge is a 2 phase separation decanter centrifuge, the bowl diameter is 14 inch, the bow length is 59.5 inch, the bowl L/R ratio is up to 4.2, the max speed is 3900rpm, the max G force is up to 3063G, the beach angle will be designed as per the application.
The bowl main parts are made of duplex stainless steel SS2205 or SS2304 by centrifugal casting, which is superior to the performance of SS304 or SS316L. The slag outlet and mud distribution port is protected by the replaceable hard alloy sleeve, the carbide scraper are installed on the top and side of the slag discharge port of the bowl. The main material of the screw is duplex stainless steel SS2205 or SS2304. The centrifuge main motor, back motor and pump motor is controlled by the positive pressurized VFD control panel. The centrifuge feeding pump is made of Netzsch brand screw pump to adjust the feeding rate by adjust the motor frequency.


The chemical dosing system is customized design as per client’s requirement, including automatic powder chemical dosing system and manual liquid chemical dosing system, it can be used for both powder chemical and liquid chemical preparation, storage and dosing.
All the equipments are installed in the container for convenient transportation and operation.


Except for GNLW363FT dewatering centrifuge, GN solids control also produce other size decanter centrifuge, including 9 inch bowl, 14 inch bowl, 18 inch bowl, 22 inch bowl, 30 inch bowl, with L/R ratio 3 or 4 for different requirement.

Double Deck shale shaker and cuttings dryer for Africa drilling company

One set of double deck shale shaker and one set of vertical cuttings dryer are ready for shipment to Africa for drilling cuttings treatment system.
The double deck shale shaker will be applied as high G force drying shaker to separate the coarse solids, it can be used for both water based drilling cuttings and oil based drilling cuttings. The anti splash cover on the top to prevent the drilling mud from splashing. The top layer and bottom layer total 6pcs shaker screens are composite material frame for longer working life and better separation performance.


The vertical cuttings dryer is ideal equipment to be used for oil based drilling cuttings treatment, after treatment, the oil content on the cuttings is below 5%, the fluids will flow to an intermediate tank, then feed the fluids to decanter centrifuge for further treatment, the fine solids will be separated out by decanter centrifuge, the fluids can be reused for drilling. Before treated by decanter centrifuge, the fluids can be treated by drying shaker to reduce solids content, it will increase the decanter centrifuge treating capacity and performance, also it can prevent the centrifuge bowl from damaged by the high solids content.


GN standard drilling waste management system GNCM-40A is consist of VFD decanter centrifuge, vertical cuttings dryer, flushing pump, centrifuge feeding screw pump, fluids collection tank, skid, electric control system, accessories. The compact design with small footprint is loaded into standard container.
Except for drying shaker and vertical cuttings dryer, GN solids control also produce drilling waste treatment decanter centrifuge, including high speed decanter centrifuge, VFD decanter centrifuge, Fully Hydraulic Drive decanter centrifuge, we provide different explosion proof standard for option, IEC EX, ATEX, CNEX. For more information about high G drying shaker and vertical cuttings dryer, pls contact with GN Solids Control.

3 Phase Decanter Centrifuge for oil water separation to China ES Company

One unit of three phase decanter centrifuge is ready for delivery to China Environmental Science company for oil water separation.
The three phase decanter centrifuge working principal is as below:


The solids, oil and water with different gravity, so the generated centrifugal force is different. The solids with largest specific gravity will generate highest centrifugal force, the next is the heavy phase liquid ( water) and the light phase liquid (oil). Due to different centrifugal force, one solid layer and two liquid layer are formed. The solids to be pushed out by the screw, the liquids are separated out from their respective nozzles, the solids oil water separation can be achieved.


GN three phase decanter centrifuge is designed for oil water solids separation under 24 hours continuous working and easy operation & maintenance. The main components including centrifuge driving system, decanter bowl, screw inside the bow, centrifuge skid and VFD control panel.
The 3 phase decanter centrifuge is installed on the mud tank or on the telescopic skid with feeding pump, it has been widely used for oil sludge treatment system. The oil sludge can not be feed into the three phase decanter centrifuge directly, the sludge vacuum pump will pick up the oil sludge from waste pit to the pre-mixing tank, with chemical jetting, heating and agitating, the submersible slurry pump will suck from the pre-mixing tank to shale shaker module to separate the coarse solids and reduce solids content, the fluids discharged from shale shaker will be feed to two phase decanter centrifuge with proper chemicals for fine solids separation. The liquid treated by the 2 phase decanter centrifuge can be feed to three phase decanter centrifuge for oil water separation by adding proper chemicals.
For more information of three phase centrifuge, pls contact with GN solids control.

Offshore Drilling Mud Centrifuge and Cuttings Dryer to Asia Oilfield Service Company

Recently one batch of offshore drilling mud centrifuge and cuttings dryer are ready for delivery to Asia oilfield service company. The equipments list is as below：


1. 6 units of GNLW363D-FHD Fully Hydraulic Drive decanter centrifuge
2. 2 units of GNCD930G vertical cuttings dryer with skid


3. 8 units of variable speed screw pump, 2 units as flushing pump for vertical cuttings dryer, 6 units as feeding pump of fully hydraulic drive decanter centrifuge
The features of GNLW363D-FHD Fully Hydraulic Drive decanter centrifuge including:


1. ATEX motor and control panel, the cable meets the requirements for use in marine environments.
2. The hydraulic bowl and scroll drive system drived both the hydraulic motor ROTODIFF and the bowl of the decanter centrifuge from hydraulic pump unit by two hydraulic oil circuits.
3. The centrifuge can be used for high temperature ambient up to 55 C degree for heavy mud, suitable for zone 1 and zone 2 application.
4. VISCOTHERM Fully hydraulic drive system
5. Max speed is up to 3600rpm, max G force is up to 2610G.
6. The bowl material is duplex stainless steel SS2304 from centrifugal casting, the screw material is stainless steel 304.
7. The solids discharge port and fluids distribution port is protected by tungsten carbide inserts, the screw is protected by tungsten carbide tiles
8. The bearing is SKF brand
During centrifuge working process, the bowl speed ,differential speed, fluids pool depth, feed rate, flocculant consumption can be adjusted according to actual situation. The higher bowl speed, the drier solids discharge, more clear liquid effluent to be get. The lower differential speed, the longer time of the solids phase stay inside the bowl, so the discharged solids will be drier.
If you need fully hydraulic drive centrifuge, vertical cuttings dryer, pls contact with GN solids control.

22inch Big Bowl Decanter Centrifuges for Asia Oilfield Service Company

Recently one batch of 22 inch big bowl decanter centrifuges ready for delivery to Asia oilfield service company. It is used to treat different types drilling fluids for the drilling rig.


The features of GN 22 inch big bowl decanter centrifuge is as below:
1. Adjustable speed VFD control panel drived centrifuge for convenient operation, we have ATEX, IEC EX zone 1 and zone 2 for option based on different client’s requirement.
As ambient temperature, self cooling system or air conditioner can be applied for VFD cooling.


2. Big bowl big volume, 22 inch bowl diameter, 71 inch bowl length, with max speed up to 3000rpm, max G force is up to 2719G. The max treating capacity is up to 500gpm for big volume treatment.
3. The bowl and screw core shaft are made of duplex stainless steel SS2205 by centrifugal casting, better than SS316L and SS304. The other parts are all made of stainless steel for better corrosion resistance.
4. The screw propeller is protected by tungsten carbide tiles which is replaceable once damaged.
5. The fluids distribution port and solids discharge port is protected by replaceable tungsten carbide alloy.
6. The planetary gear box with big transmission torque, compact design, reliable performance and easy maintenance.
7. The bearing lubrication system with good performance to lubricate and cool the SKF brnd bearing to improve the service life of bearings.
The application of big bowl big volume decanter centrifuge including oil & gas drilling solids control system, drilling cuttings treatment system, oil sludge treatment system, construction engineering mud treatment, mining slurry separation and dewatering unit.


Except for 22 inch big bowl decanter centrifuge, GN solids control can also produce 9 inch mini centrifuge, 14 inch bowl decanter centrifuge, 18 inch bowl decanter centrifuge, 30 inch bowl decanter centrifuge for different applications.