Author: gnadmin

Mini Shale Shaker and Decanter Centrifuge for International Diamond Core Drilling

One batch of mini shale shaker and mini decanter centrifuge are ready for delivery for diamond core drilling project. It is the core equipments for the diamond core drilling solids removal unit.


A complete solids removal unit consists of shale shaker, decanter centrifuge, centrifuge feeding pump, mixing hopper, mixing pump, mud gun( agitator), compact design mud tank and accessories. The function of the solids removal unit (SRU) is a closed loop fluids treatment system to recycle the water for mineral and diamond core drilling, the purpose is to reduce the water consumption, reduce the environmental impact, improve the drilling efficiency.
According to different drilling conditions, we have 2 models of mini centrifuge for option, GNLW223 is a standard mini decanter centrifuge with max bowl speed 4500rpm and max G force up to 2492G. We can also provide variable frequency drive for this centrifuge for smaller current in start if need. GNLW224-VFD is a high configuration variable speed mini decanter centrifuge with max bowl speed 5000rpm. Both of GNLW223 and GNLW224-VFD centrifuge with bowl diameter 9 inch, the bowl length is different, the client can select it according to their actual requirement.


GNZS752 is a 2 panel mini shale shaker, to separate the coarse solids from the diamond core drilling waste water, it can greatly improve the separation efficiency of mini decanter centrifuge, and protect the centrifuge screw. Without the mini shaker, the centrifuge bowl will be blocked frequently and damage very fast. GN mini centrifuge bowl screw propeller is protected by tungsten carbide tiles for longer working life, especially when the solids content is high in the waste water, it will improve the centrifuge working life greatly.
If you need a mini shale shake and mini decanter centrifuge or complete solids removal unit for core drilling, pls contact with GN solids control.

Two Sets GNOST-05C GN Oil Sludge Treatment System for Overseas Client

Recently 2 sets of GNOST-05C oil sludge treatment system are ready for delivery. The oil sludge treatment system is customized design as per client’s requirement, including pre-mixing tank module, chemical dosing unit, three phase decanter centrifuge separation module and three phase disc centrifuge separation module.


The pre-mixing tank module is used to receive the oil sludge from picking up pump, supply heating steam to the pipelines inside mud tank to heat the oil sludge up to 60 ~70°C, add proper chemicals and the mud agitator will mix it continuously, the screw pump will transfer the well mixed oil sludge to 3 phase decanter centrifuge separation module together with chemical dosing unit.


The 3 phase decanter centrifuge module consist of 3 phase decanter centrifuge, mud agitator, water collection tank, oil catching tank, to get discharged water, oil and separated solids.


The 3 phase disc centrifuge separation module consists of 3 phase disc separator, oil buffer tank with oil pump, water buffer tank with water pump, the oily fluids is feed to three phase disc separator to get clear water, oil and few solids. The separation result of 3 phase decanter centrifuge and 3 phase disc centrifuge is different to meet different client’s treatment requirement, the maintenance cost and operation procedure is also different.
GN solids control have 3 models standard oil sludge treatment system with 1m3/h, 5m3/h and 15 m3/h treating capacity, which can be used to treat refinery oil tank bottom cleaning oil sludge treatment, drilling waste treatment, oily waste water treatment, we can also provide customized modules oil sludge treatment according to different projects. Except for oil sludge treatment system, GN also design and produce water based drilling cuttings treatment and oil based drilling cuttings treatment system, if you need a drilling waste management solution, pls contact with GN solids sales.

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.

Screw Conveyor and Solids Control Equipment for Middle East Drilling Company

One batch of screw conveyor and solids control equipments are ready for shipment to Middle East Drilling Company. The equipments list including screw conveyor, shale shaker and mud cleaner as below:


Screw conveyor GNSC14-48, it is U type screw conveyor for continuous conveying without flexible traction. It is used to collect the drilling cuttings and transfer the drilling cuttings to drilling waste treatment system. The screw conveyor can be covered with closed steel plate or steel grating plate for option. The transfer length can be optional with different quantity sections, each section is 12ft, the length can be 12ft, 24ft, 36ft and 48ft. The screw blade are made of wear resistant and thicker manganese steel. The bearing is from NSK or FAG, the reinforced frame of the screw conveyor is with high strength to be suitable for horizontal or inclined installation.


Shale shaker GNZS594, it is a 4 panel linear motion shale shaker widely used for oil & gas drilling mud cleaning, the shaker screen is composite material frame shaker screen compliant with API RP13C standard. The single deck shale shaker is with reliable performance, easy operation and maintenance, cheaper operation cost.


Mud cleaner GNZS594-2S16N, the mud cleaner is a desander cone, desilter cone and bottom shale shaker 3 in 1 equipment, which is used after the primary shale shaker for the second phase and third phase cleaning of drilling mud. The bottom shale shaker model is same with the shale shaker GNZS594. The treating capacity is up to 1000gpm with 2ea of 10 or 12 inch desander cone, 16 ea of 4 inch desilter cone.
Except for shale shaker, mud cleaner and screw conveyor, GN also produce drilling mud decanter centrifuge and drilling waste treatment decanter centrifuge, vertical cuttings dryer and high G drying shaker,pls contact with GN solids control.

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.