Recently one batch of drilling waste management equipments are ready for shipment to our international clients, the equipments list including:
1) One unit of vertical cuttings dryer GNCD930, it can be widely used for treatment of drilling cuttings discharged from oil based mud (OBM) and synthetic based mud (SBM), the standard speed is 900rpm and G force is up to 420G, VFD drive is available for adjusting speed to maximize the vertical cuttings dryer performance. The cuttings dryer flights on the rotor is hard facing to HRC65 for longer working life. It equipped with individual oil lubrication system with automatic alarm for pressure limit. The main motor and oil pump motor is interlocked with each other to avoid the start of the main motor prior to the oil pump motor start.

2) Two units of VFD decanter centrifuge GNLW363D-VFD, the VFD control panel is a positive pressurized control panel with air conditioner for cooling, applicable for zone 1 and zone 2. VFD from Yaskawa, ABB or Siemens brand, PLC and touch screen are from Siemens and other famous brand. Circuit breakers and other components from Schneider or other brands.

3) Two units of fixed speed decanter centrifuge GNLW363D, we can provide different speed pulleys according to client’s requirement, the centrifuge bowl diameter is 14 inch, and the centrifuge bowl length is 50 inch, the treating capacity will varies according to different material and speed.
4) Five units of Germany Netzsch brand screw pump GNG20-055C
5) Five units of Germany Netzsch brand screw pump GNG30-075C
6) Two units of screw conveyor with spare screw scroll set for replacement GNSC14B-36 with local control panel

7) One unit of spare parts, such as stator, rotor, explosion proof motor, etc.
For more information about drilling waste treatment equipments, pls contact with GN Solids control.

Recently one unit of 3-Phase Disc Stack Separator are ready for shipment for Overseas Vegetable Oil Separation. The technical configuration is as below:

Centrifuge Model：GNSD225
Centrifuge Bowl diameter：810 mm
Piston diameter：730 mm
Treating capacity：30-40 m3/h
Rotation speed：4500 RPM
Volume：27L
Motor power：75kw
Drive type：Belt drive
Start time：8~15min
Stop time：30min
Bearing：SKF
The centrifuge bowl, collection box, big piston material is made of duplex stainless steel SS2507
Control system: VFD control panel with Siemens PLC, ABB drive, Schneider touch screen, operation screen in EN/CN language
Filter: Including sealing water filter. Produced according to food grade, all seals are made of fluororubber.

Except for Vegetable Oil Separation industry, the 3 phase disc stack separator can be also used for oil sludge separation unit with customized design according to material to be treated.
For oil sludge treatment system, we have option of 3 phase decanter centrifuge and 3 phase disc stack separator according to client’s requirement. The effective pre-treatment process should be done before centrifuge separation process, including pre-mixing tank ,coarse screening unit and 2 phase decanter centrifuge separation unit, which can reduce solids content effectively.
There are 4 models of 3 phase disc separator for option, GNSD-40, GNSD-90, GNSD-125, GNSD-225, it can be selected by required capacity. The 3 phase decanter centrifuge with a separation factor of approx. 3000G, and 3 phase disc stack separator G force is up to 12000G. The 3 phase disc separator can more thoroughly separate liquids with different specific gravity and the liquid phase discharged is more clarified. But the complicated operation of the 3 phase disc separator will limit its usage.
If you need a two phase decanter centrifuge, three phase decanter centrifuge, three phase disc stack separator to treat your material, pls contact with GN solids.

Recently one unit of offshore lifting standard vacuum degasser and offshore lifting standard VFD decanter centrifuge are ready for shipment to international client. The equipments will be used for offshore drilling project.
Features of GNZCQ270B vacuum degasser:
1) Stainless steel material cabinet for corrosion resistance
2) Self contained vacuum degasser without jetting pump
3) Ultrasonic controller t prevent vacuum or liquid to an undesired high level for option
4) Offshore lifting standard frame with the vacuum degasser for safety lifting when movement
5) Horizontal installed vacuum degasser, compact structure, easier operation
6) Treating capacity up to 1200gpm, the vacuum is -0.02~-0.04Mpa, main motor power is 30HP, vacuum pump power is 10HP
7) The vacuum degasser is suitable for various mud recycling system, it is important in restoring the specific gravity of mud, stabilizing the viscosity of mud, and reducing drilling cost.

Features of GNLW363D-VFD decanter centrifuge:
1) Stainless steel material positive pressurized VFD control panel with self cooling system, with PLC smart control from Siemens and other famous brand
2) Main motor, back drive motor and pump motor 3 VFD from Yaskawa, ABB or Siemens brand
3) The centrifuge skid comply with offshore lifting standard
4) The centrifuge bowl main components are made of duplex stainless steel 2205 or 2304 by centrifugal casting, which is superior to the performance of SS304 and SS316L.
The other components are made by SS316L to avoid intergranular corrosion and incomplete residual stress release caused by traditional welding process.

5) The solids outlet and liquid outlet are protected by tungsten carbide insert and it is replaceable
6) The SKF brand bearing for longer and reliable working life
7) The screw blades are protected by tungsten carbide tiles and it is repairable
If you need vacuum degasser and decanter centrifuge, pls contact with GN solids control.

This week one batch of GNZS594J-SHBJ shale shaker and GNSB8×6C-13J centrifugal pumps are ready for shipment to India.
GNZS594J-SHBJ shale shaker with 4 panel of 585x1165mm composite material frame shaker screens. The vibration mode is linear motion, reference treating capacity is 140m3/h by API40 shaker screen, it is drived by 2ea 2.3HP Italy Oli brand vibration motor. The vibration G force is up to 7.5G and it is adjustable. The screen area is 2.73m2, and the deck angle adjustment range is from -1° to +5°. The shale shaker application including oil & gas drilling mud solids control, oil & gas drilling waste management, oil sludge treatment unit, HDD mud treatment, TBM slurry separation, construction slurry mud treatment, mining drilling mud treatment and other types of mud treatment.

The starter and vibration motor have different explosion proof standard for option: CNEX / ATEX / IECEx, standard ExdIIBT4. The shaker screens installed on the shale shaker is produced comply with API RP13C standard, with 3 layers of stainless steel 316L wire mesh and composite material frame for longer working life.
Fast disassembly design of sealing strip on shaker deck bottom, it is convenient to replace the sealing rubber, wear resistant polyurethane rubber strip with good sealing effect and longer working life. Also side fluids outlet plate and bottom fluids outlet plate is removable with sealing rubber.

8 units of GNSB8×6C-13J centrifugal pump (55KW) is used as transfer pump of the slurry, the electric control panel is installed on the skid to control the electric motor.The pump casing and impeller is made from hard ductile iron alloy to extend the working life, and all the spare parts are interchangeable with international famous brand centrifugal pump to outsource the spare parts easily.
If you need linear motion shale shaker and centrifugal pump, pls contact with GN solids control.

A high speed decanter centrifuge or a VFD decanter centrifuge can be widely used for drilling fluids cleaning, drilling cuttings treatment, waste water treatment and slurry dewatering, etc. How to operate a high speed decanter centrifuge produced by GN Solids Control? Below is some instructions about it.

Firstly connect with power supply with decanter centrifuge control panel, switch controller between control panel and power supply is necessary to ensure wiring safety, then loose the fixing screws, keep the screw end 5mm faraway from centrifuge bowl. If the centrifuge is VFD decanter centrifuge, plug the main motor, variable frequency back drive motor, back drive motor fan, and feeding pump motor into the control panel, connect the power cable to the terminals in the VFD control panel, then provide clean and dry air from the air inlet, the required working pressure is 0.4 Mpa to 0.7 Mpa (150~200 L/min).

During operation of the VFD decanter centrifuge, open the air source and adjust the inlet pressure, select work mode. Simultaneously push the 2 buttons on positive pressure controller for 5s until displayed N , the positive pressuried VFD control panel start to work. Input the main motor speed and back drive motor speed to start the centrifuge, when the centrifuge operates normally , input the operation parameters of the feeding screw pump. when the feeding pump is stopped, a red window showed that “conveyor speed set error, number set should lower than”, pls select No to refuse flushing. When the red window disappeared, set flushing parameters to flush the decanter centrifuge. After the decanter centrifuge stopped completely, switch off main power, close air source, cut off power supply.
If you have any problem to operate GN high speed decanter centrifuge or VFD decanter centrifuge produced by GN, pls contact with GN solids control.

Even though all of the screw pump, submersible slurry pump, centrifugal pump, diaphragm pump, inline pump can be used as decanter centrifuge feeding pump, but the most universal feeding pump for decanter centrifuge is mono pump or positive displacement pump. As one of the decanter centrifuge manufacturer in China, GN solids control normally used single screw pump as feeding pump, including VFD screw pump, manual variable speed screw pump and fixed speed screw pump, which depends on client’s different requirement. The most common brand screw pump we applied is Netzsch brand with reliable working and worldwide after sales service, the client can choose to get local service from Netzsch or get service from GN Solids.
When the client’s decanter centrifuge is with variable frequency drive control panel and buy feeding pump from GN, we will make the screw pump motor frequency converter into the Centrifuge VFD control panel, which can be adjusted from the PLC smart control touch screen easily according to client’s requirement, it is recommend to use variable speed motor for the screw pump for better performance.
If the client’s decanter centrifuge is a fixed speed decanter centrifuge, for example, 2700rpm, but they need to adjust the feeding rate by adjust the screw pump motor speed, manual variable speed screw pump can be selected, which with a mechanical adjustable speed gearbox. The working principal of the positive displacement pump decide that the feeding flow rate can be adjusted effectively by adjust the speed, if for other type feeding pump, such as centrifugal pump and submersible slurry pump, it is hardly to adjust the feeding rate by variable frequency, it is suggested to adjust the flow rate manually by control valves.
Not only as decanter centrifuge feeding pump, the screw pump can be also as flushing pump of vertical cuttings dryer.

GN designed horizontal type vacuum degasser create a negative pressure inside the vacuum tank by the vacuum pump suction. Under the atmospheric pressure, the drilling fluids enter the hollw shaft of the rotor through the suction pipe, then sprays towards the tank wall through the windows around the hollow shaft. Due to the collision and separation wheel, the drilling fluids forms a thin layer, causing bubbles immersed in the mud to break and gas escape.Through the vacuum pump suction and gas water separator’s separation, gas is discharged to a safe area through the exhaust pipe, mud is discharged from the mud outlet through centrifugal force generated by the impeller rotation driven by the main motor. Remember that the main motor should be started firstly, then vacuum pump motor starts. The suction pipe and discharge pipe should be placed under the mud level.

The vacuum pump is a water ring type vacuum pump, when start the vacuum pump motor, a negative pressure of 550mm Hg is formed by the vacuum pump inside the vacuum tank.
The outlet pipe is connected to the intet of gas water separator, the gas is out of the vacuum tank and discharged through the exhaust pipe.
How to use the horizontal vacuum degasser?

Firstly, open the ball valve on the vacuum pump water inlet pipe, then open the valve on the water inlet of the gas water separator, press start on the control panel, start the vacuum pump, let the drilling fluids enter into the vacuum tank. The vacuum pump will be stopped if you press the stop button, then stop the main motor button , disconnected the power supply.
Except for horizontal type vacuum degasser, we also produce centrifugal degasser for vertical installation, If you need a centrifugal degasser, pls check with GN solids sales.

As one of the mud agitator manufacturer in China, GN solids control can produce both direct connection and coupler connection mud agitator according to client’s requirement. The mud agitator model will be selected according to tank design and tank dimensions. The most popular mud agitator is horizontal type with helical bevel gearbox, the motor and gearbox is direct connection.

To select the mud agitator horsepower and impeller size, we will collect information as below: tank shape is rectangle tank or vertical cylinder tank, the tank dimension, maximum mud weight and desired turnover ratio. The TOR value should not less than 40 second and should not greater than 85 seconds. According to the client’s requirement, we can supply different explosion proof standard, such as CNEX, IEC EX, ATEX or UL.

When install the mud agitator on the mud tank, the agitator should be lifted horizontally, and place it on the right position, put the agitator shaft on a strict vertical line, then weld 4ea pad on the tank and tighten the base fixing bolts. Welding the stabilizer on tank bottom, and put the shaft with impeller into stabilizer. Adjust the position of the stabilizer to make the shaft vertical, and ensure the normal rotation of the shaft, ensure the stabilizer will not affect the rotation of the shaft.
The mud agitator main components including gearbox, motor, gearbox mounting plate, shaft, shaft stabilizer, impeller, if it is coupler connection mud agitator, also with coupler. The electric control panel will be installed besides the mud agitator.
Except for mud agitator, GN solids control also produce mud gun, mixing hopper, centrifugal pump, shale shaker, mud cleaner, desander, desilter, vacuum degasser, decanter centrifuge, screw pump, submersible slurry pump, mud tank, mud gas separator, vertical cuttings dryer, screw conveyor, electric control panel, high G drying shaker, etc.

As sludge vacuum pump manufacturer in China, GN solids control produce 100% air operated vacuum pump with different treating capacity, including GNSP-10B, GNSP-20B, GNSP-40B.
How to operate the sludge vacuum pump with 40m3/h flow?

Firstly connect the air supply, normally air compressor which meets the pressure requirement, and manual mode or automatic mode can be selected as client’s requirement.
When automatic mode is selected, set the “automatic and manual switching valve” to the “zero position”, turn on the air supply, set the switching valve to the “manual state”, and set the “loading and unloading switching valve” to the “unloading state” to confirm the emptying of the material in the tank; Time 2 minutes;

Restore the “automatic and manual switching valve” to “zero position “, switch the “automatic and manual switching valve” to the “automatic state”, and the equipment can operate in automatic mode. The equipment will automatically suction and unloading according to the set loading and unloading time; (according to our experience, setting values for loading and unloading are 10s, which can be adjusted by users according to on-site conditions);
If manual mode is selected, set the “automatic and manual switching valve” to “manual state” and the “loading and unloading switching valve” to “unloading”;
Restore the “loading and unloading switching valve” to “zero position”; Place the suction port into the material to be sucked in
Turn the “Load and Unload Switching Valve” to “Load”, and the pump starts to suck materials when the tank is full; Turn the “Load and Unload Switching Valve” to “Unload”, and the pump starts to discharge slurry.
The automatic mode and manual mode can be only selected for GNSP-40B vacuum pump, the smaller size vacuum pump with only automatic mode. The vacuum pump can be used to transfer drilling waste from solids control equipments, drilling fluids, animal waste, sand, powder material, oil sludge, etc. material.

GN solid control showed our decanter centrifuge at 2023 NEFTEGAZ Russia Oil Exhibition. Neftegaz and National Oil and Gas Forum the major event of the fuel and energy sector. Neftegaz is Russia’s largest trade show for the oil and gas industry. It ranks in the top ten of the world’s petroleum shows. Supported by the Russian Ministry of Energy, Russian Ministry of Industry and Trade, Russian Union of Industrialists and Entrepreneurs, Russian Gas Society, Union of Oil and Gas Producers of Russia. Every year GN solids control will participate in NEFTEGAZ exhibition, to show our lastest technology. This year total 573 companies participate in the exhibition, total visitors over 22820, and total hall area over 35000 square meters.
The exhibition information is as below:
Exhibition name: 2023 NEFTEGAZ Russia Oil Exhibition
Exhibition time: April 23th to 27th, 2023
Exhibition location: Expocentre Fairgrounds, Moscow, Russia
This year we showed GN decanter centrifuge, vertical cuttings dryer and shale shaker screens.

GN 14inch bowl decanter centrifuge is one of the most popular model decanter centrifuges for oil and gas drilling fluids treatment and drilling waste treatment system, it can be also used as dewatering centrifuge with chemical dosing unit. We can produce high speed decanter centrifuge, VFD decanter centrifuge and Fully Hydraulic Drive decanter centrifuge for different application, also we can provide different explosion proof standard for your requirement, CNEX, ATEX or IEC EX.

The vertical cuttings dryer is widely used to treat OBM, SOBM drilling waste, it can reduce the oil from the cuttings effectively. Even under minus 40C degree in the winter, GN vertical cuttings dryer is also able to work well inside special decorated container to keep it warm.
If you need a containerized drilling waste management system solution to our client, if you need more information, pls contact GN Solids control.