Author: gnadmin

Vacuum Degasser and Mud Agitator for China Oilfield Service Company

Several sets of vacuum degasser and mud agitators are ready for delivery to China oil oilfield service company.


GN solids control can provide different types mud agitator for different application, including coupler connection mud agitator, direct connection mud agitator, vertical mud agitator, etc. The gearbox to be used with mud agitator is heavy duty helical bevel type gearbox for reliable operation, especially suitable for heavy mud. We will install different explosion proof standard motor for different project’s requirement, control panel can be optional as client’s requirement, such as IEC EX, ATEX, CNEX, etc. The impeller size and shaft length can be customized as your mud tank dimension.
When the agitator impeller come into contact with the drilling fluids, it forces it to generate vortex motion, thereby preventing the sedimentation of solid particles in the drilling mud, achieving the effect of uniform mixing of solid and liquid phases and consistent density. The connecting plate sandwiched in the middle of the impeller can prevent the solid particles of mud from depositing in the lower part of the impeller after shutdown, thereby reducing the resistance of solid materials to the impeller when starting again, and avoiding the accident of burning the motor due to starting overload. When motor is running, it drives the input shaft of the gearbox to rotate through the rotation of the motor. The output shaft of the gearbox drives the mixing shaft to rotate through a rigid coupling, and the mixing shaft is connected to the impeller through bolts for transmission.
To select proper quantity and model mud agitator for the solids control system mud tank, we will clear the drilling fluids density, mud tank dimension, equipments list, etc. information, then we will select proper model for our client.


For more information of GN vacuum degasser and mud agitator, pls contact with GN solids control.

Centrifugal Pump and Solids Control Centrifuge for Africa Client

Recently 2 set of 1500HP drilling rig solids control equipments are ready for delivery to our Africa client. The equipments list including:


6 units of GNZS594J-SHBJ linear motion shale shaker, which is a single deck 4 panel high G force shale shaker. 3 units shale shaker per rig, total treating capacity can reach at least 1500gpm. The shaker screen installed on the shale shaker is produced compliant with API RP 13C standard. Not only for OEM shaker screens for GN own shale shaker, we also produce replacement shaker screens for world famous brand shale shaker. Pls contact with GN solids control for more information.


3 units of GNZJ594J-2S12N linear motion mud cleaner, the bottom shale shaker is same with the linear motion shale shaker, combined with 2 ea 10 inch desander cone and 12 ea of 4 inch desilter cone, the treating capacity is up to 1000gpm. It can be also act as back up shale shaker if required.
16 units of centrifugal pump, the centrifugal pump can be used as feeding pump of desander cone and desilter cone, it can be also used as trip pump, mixing pump, transfer pump, super charging pump.


2 units of GNLW452 decanter centrifuge, this is a middle speed decanter centrifuge which can be used for barite recovery, the separation cut point is 5~7 microns. If for low gravity solids separation, we can utilize high speed decanter centrifuge to separate the fine solids, or VFD decanter centrifuge can be introduced to be used for both barite recovery and LGS separation.


Except for the above equipments, GN solids control also provide vacuum degasser, mud agitator, mud gun,mixing hopper, mud gas separator, mud tank system, etc. We also provide decanter centrifuge, vertical cuttings dryer, high G drying shaker , screw conveyor, etc. drilling waste management equipments.

OBM Vertical Cuttings Dryer for Several Africa Customer

Recently several packages of OBM vertical cuttings dryer unit are delivered to several Africa customers. Some clients bought single drilling waste management equipments, including vertical cuttings dryer, decanter centrifuge, screw pump, screw conveyor, spare parts,etc. Some clients ordered the complete vertical cuttings dryer package, which including vertical cuttings dryer, decanter centrifuge with its feeding pump, telescopic skid for the vertical cuttings dryer and decanter centrifuge, fluids catching tank as an intermediate tank, the VFD control panel and feeding pump are installed on the telescopic skid for convenient transportation and operation.


Since 2012 till now, GN solids control has sold hundreds of OBM vertical cuttings dryer package to Africa clients for OBM drilling cuttings treatment and volume reduction treatment before feeding to Thermal desorption unit. With reliable working,long service life, easy operation and maintenance, GN vertical cuttings dryer and decanter centrifuge has got positive feedback from our clients at site, especially for the steadily working under hot weather in Africa.


GN vertical cuttings dryer has been updated to G version according to client’s feedback, the lastest version design has been the most user friendly and best performance, it is the ideal equipment for OBM drilling cuttings treatment. GNCD930G-GP vertical cuttings dryer working principal is that the motor drive the main pulley, the main pulley drive the gearbox cover via belt, the gearbox drive the bell jar assembly and screen basket assembly. Fix the gearbox input shaft, to make the gearbox output shaft speed lower than gearbox cover speed, to drive the rotor assembly in a lower speed than screen basket assembly speed. Then, the screen basket assembly and rotor assembly form same rotation direction separation machine with proper differential speed.


If you need vertical cuttings dryer, decanter centrifuge, screw conveyor for OBM drilling cuttings treatment, pls contact with GN solids control.

Desanding Plant and Mud Recycling System for Asia HDD client

Recently one batch of desanding plant and mud recycling system are ready for shipment for Asia HDD client.


The HDD mud recycling system is high configuration 500gpm multiple functional mud recycling system, with mud cleaning, recycling, mixing and storage function. It consists of double deck shale shaker with hydrocyclones, desilter cone feeding pump, mixing hopper, mixing pump, mud tank, mud agitator, mud gun, guardrails, walkway, stairs and pipelines. The working process is as below:
The picking up pump ( submersible slurry pump) pick up the used mud from mud pit and feed to GN mud recycling system shale shaker (coarse screen layer of the double deck shale shaker) to separate the coarse solids from the HDD drilling fluids, the treated mud dropped into the mud tank, the desilter feeding pump suck the mud from the mud tank compartment 1 and feed to desilter cone to separate solids cut points 15 microns, the treated mud dropped into desilter compartment , the user can add chemical additives into the mixing hopper to prepare for new drilling fluids with the treated mud, the new drilling fluids can be reused by the HDD machine. The discharged solids from desilter cone will be dried by the fine screen of the double deck shale shaker.


The desanding plant can be used for bored piling, pipe jacking, HDD project, TBM desanding project. We have 200gpm, 500gpm, 1000gpm and 1500gpm desanding plant for option according to client’s requirement. The main components of the desanding plant including double deck shale shaker with desander cone, catching tank, feeding pump and accessories. The user can prepare picking up pump, transfer pump, slurry storage tank, jet mud mixer unit locally.
Except for standard desander plant and HDD mud recycling system, GN solids control also provide customized desander unit and HDD mud recycling system.

Centrifugal Pump and Solids Control Centrifuge for Bolivia Customer

Recently one batch of centrifugal pump and solids control centrifuge are ready for shipment to our Bolivia customer, who owns already over 10 units of GN solids control centrifuges totally. These equipments will be used for drilling service of 2 units of drilling rig.


The centrifugal pump will be used as desander desilter feeding pump, trip pump, super charging pump for mud pump, mixing pump and other transfer pump. GN produced centrifugal pump with all the spare parts interchangeable with most of the international brand centrifugal pump, it will be convenient for our client for spare parts inventory. The pump casing and impeller are all made of hard ductile iron allow for longer abrasion resistant capability. The bearing are from top brand for reliable operation. Mechanical seal provide a better sealing performance, the pump skid to support pump is made from casting instead of welding for reliable operation and less vibration.


The solids control centrifuge is one of our core equipments among all the solids control equipments, we can provide it with fixed speed decanter centrifuge or VFD decanter centrifuge according to client’s requirement, the most common used model is GNLW363D-GP decanter centrifuge, the bowl diameter is 14 inch, the bowl length is 50 inch, the max bowl speed is 3900rpm, the typical bowl speed is 3200rpm, the separation cut point is 2~5 microns.


The VFD decanter centrifuge with a positive pressurized VFD control panel, it can be used for barite recovery, high gravity solids separation , low gravity solids separation. The VFD control panel with cooling tube or air conditioner when working in high temperature environment, PLC smart control with HMI interface for manual and automatic operation. We can provide ATEX, IEC EX for class 1 division 1 application.
Not only for solids control centrifuge, GN decanter centrifuge has been widely used for drilling waste management system, oil sludge treatment system, dewatering centrifuge and other industry use.