Category: decanter centrifuge

GN Drilling Cuttings Treatment Equipment for Middle East Customer

One batch of GN drilling cuttings treatment equipments are ready for delivery to Middle East customer, including 3 sets of high G drying shaker GNZS594K and 2 sets of vertical cuttings dryer GNCD930G.
What is the difference of high G drying shaker with vertical cuttings dryer?
1. Application difference: The high G drying shaker is normally used to treat water based drilling cuttings, the vertical cuttings dryer is normally used to treat oil based mud/ drilling cuttings.


2. Working principal difference: High G drying shaker ( also called as high G dryer) is high vibration G force shale shaker with fine mesh shaker screens. It is drived by 2ea vibration motors, the shaker screen is 4 pcs of 585x1165mm composite material frame shaker screens. When the water based drilling cuttings are feed to high G dryer buffer tank, the massive G force immediately pins solids against the fine screen mesh ( as fine as 200 mesh/74 microns).Liquid passes through the screen and is recovered, while dry solids are conveyed and out by augers.


Vertical cuttings dryer ( also called as verti-G dryer), when the OBM or SOBM wet cuttings are feed to verti G dryer feeding port by screw conveyor, A stainless steel screen basket traps wet solids and accelerates it up to 900rpm with up to 420G, the liquid is forced through screen openings, the dry solids are extracted by the angled flights attached to the rotor, which rotate slightly slower than the screen. The tungsten carbide protect the flights from abrasive solids and ensures longer operation life.
3. Treatment result is different.
The high G drying shaker can dry the WBM drilling cuttings with moisture less than 30% ~ 40%, the vertical cuttiings dryer can dry the SOBM drilling cuttings with OOC <5%, which can be sent to Thermal Desorption Unit for further treatment.

GNLW454GT Mud Dewatering Centrifuge for Hydrovac Slurry Treatment

One set of GNLW454GT mud dewatering centrifuge package are ready for shipment to Hydrovac slurry treatment project.


GNLW454GT Decanter centrifuge technical specification is as below:
The bowl diameter is 450mm, the bowl length is 1890mm, the length/ diameter ratio is 4.2.The max bowl speed is 3452rpm, the max G force is up to 3000G. The main motor is 37KW / 45KW/ 55KW, the back drive motor is 11KW/ 15KW/ 22KW, the beach angle is 8.5 degree, The bowl main material is made of duplex stainless steel SS2205 by centrifugal casting, the screw material is made of duplex stainless steel SS2205, the screw is protected by tungsten carbide tiles, and the centrifuge is drived by positive pressurized VFD control panel with PLC touch screen and HMI interface. The bearing is premium SKF bearing for reliable and longer working life. The T series decanter centrifuge is mainly used for dewatering unit.


GN solids control design and manufacture waste management for hydrovac slurry treatment system. The working principal is to use solids liquid separation equipment to treat the slurry from vacuum truck of hydrovac project. The slurry is contaminant free which is from physical utility location in public right of ways, and directional drilling for replacement of underground pipes and construction.


A complete hydrovav slurry treatment system including waste catch hopper, coarse solids separation shaker with fluids catching tank, Fine mesh shaker , desilter and mud tank, dewatering decanter centrifuge and chemical dosing unit with centrifuge dewatering tank or telescopic skid. The decanter centrifuge and VFD control panel and feeding pump are all installed on the telescopic skid with fluids collection tank and a transfer pump.
Except for T series decanter centrifuge, GN also produce fully hydraulic drive decanter centrifuge, Y series separation decanter centrifuge, C series clarifying decanter centrifuge and three phase decanter centrifuge.

Shale Shakers and Vacuum Degassers for 2000HP drilling rig to Europe

Recently one set of 2000HP drilling rig solids control equipments are ready for delivery to Europe. The equipments list including:


1. 3 sets of GNZS594K drilling mud shale shaker, it has 4 panel shaker screen, the vibration mode is linear motion, the reference flow rate is 140m3/h, it is drived by 2ea 1.94KW vibration motor, the vibration G force is adjustable and up to 7.5G, the total screen area is 2.73m2. The deck angle is adjustable from -1° to +5°.


2. 1 set of GNZJ594K-3S16N mud cleaner, this is a combo unit combined 3ea of 10 inch desander cone, 16ea of 4 inch desilter cone and bottom shale shaker. The treating capacity is 1500gpm.The bottom shale shaker model is GNZS594K, same with the linear motion shale shaker, the shaker screen is same 4 pcs of 585x1165mm shaker screens.
3. 1 set of GNZCQ360 vacuum degasser


4. 1 set of GNLW363D drilling fluids decanter centrifuge, the bowl diameter is 14 inch, the bowl length is 50 inch, the bowl and the screw core shaft are made of duplex stainless steel SS2304 by centrifugal casting, the other major parts are made of stainless steel 316L, the screw are protected by tungsten carbide tiles, which is interchangeable. The solids outlet and liquid outlet are protected by replaceable hard alloy sleeve.
Except for shale shaker, mud cleaner, vacuum degasser, decanter centrifuge, etc. solids control equipments, GN solids control also produce other solids control equipments, like mud a

Hydrovac Slurry Separation System for America Client

Recently one set of hydrovac slurry separation system are ready for shipment to America client. The customized hydrovac slurry separation system including:
1. Coarse screening module, including feeding hopper with spray nozzle for hydrovac truck loading the materials. The top of the hopper has a big opening mesh and the discharge port is controlled by valves to feed to the coarse screening shaker.


The coarse shaker with a catch tank, 2 units mud agitators are installed at each side of the mud tank for better agitating. The submersible slurry pump can transfer the fluids which is discharged from coarse solids separation shaker, and feed to the next fine mesh shale shaker.
2. Fine mesh screening module, the fine mesh shale shaker and desilter mud cleaner are installed on the shaker tank, which can be divided into 2 compartments. The solids bigger than 300 microns can be separated out by the fine mesh shaker.


3. Desilter module, The fluids will drop into the mud tank under the shale shaker, then the desilter feeding pump feed the fluids to the desilter cone of the mud cleaner. The mud agitators are installed on the shaker tank. The desilter separation cut point is 15~40 microns.


4. Big bowl decanter centrifuge module, the big bowl decanter centrifuge with chemical dosing unit are installed on the telescopic skid, the mechanical separation cut point is 2~ 5 microns, with chemical dosing system, the ultra fine solids can be also separated out. The fluids catching tank under the skid can collect the centrifuge discharged fluids and a centrifugal pump can transfer the water to other tanks. The big bowl centrifuge is a 22 inch bowl and the bowl length is 71 inch, with a positive pressurized VFD control panel.
If you need a customized hydrovac slurry separation system, pls contact with GN solids control.

16 Sets Drilling Mud Centrifuge and Vertical Cuttings Dryer for overseas oilfield service company

Recently 16 sets of drilling mud centrifuge and vertical cuttings dryer are ready for delivery to overseas oilfield service company.
One set of drilling mud centrifuge package including 1 unit of decanter centrifuge, telescopic skid and 1ea decanter centrifuge feeding pump. GNLW363D decanter centrifuge is the most popular high speed decanter centrifuge used for drilling mud treatment and drilling cuttings treatment. The bowl diameter is 14 inch, the bowl length is 50 inch, the designed treating capacity is 200gpm, and typical capacity is 132 gpm. The max bowl speed is 3900rpm, and typical bowl speed is 3200rpm. The max G force is 3063G, typical G force is 2062G. The separation cut point is 2 ~5 microns.

One set of vertical cuttings dryer package including 1 unit of vertical cuttings dryer, cuttings dryer skid, flushing pump and solids discharge system. The most popular vertical cuttings dryer model is GNCD930G, the treating capacity is 30 ~50 tons per hour. For the oil based drilling cuttings fresh collected from primary solids control shale shaker, the treated oil content in the cuttings is less than 5%. If the client needs less oil content in the cuttings, the solids discharged can be sent to Thermal Desorption Unit. The screen diameter is 930mm, we have 0.25mm, 0.35mm, 0.5mm three type screen opening for option. The rotation speed is 900rpm, G force is 420G, oil tank capacity is 48L. The main motor is 55KW, the oil pump motor 0.55KW.The standard vertical cuttings dryer with solids discharge collection hopper, as client’s requirement, GN designed customized solids discharge system with vibration motor for faster solids discharge.


Except for decanter centrifuge package and vertical cuttings dryer package, GN solids control also produce different size screw conveyor, high G drying shaker and complete line of solids control equipments and shaker screens.