Feb 24

Decanter centrifuge is one of GN’s main products that widely used in all kinds of drilling mud recycling and waste management. This week, GN just finished the fabrication of the variable speed decanter centrifuge ordered by an India drilling contractor.

Almost all the drilling contractors request the equipment used on oilfield to be explosion proof certified for safety consideration. To meet the customers’ requirement on explosion proof standard, GN is now able to provide equipment with motors and control panel certified by China national explosion proof CNEX, IEC Ex and ATEX.

The ordered decanter centrifuge is GN’s model GNLW363C-VFD. The bowl diameter is 14 inch (360mm), bowl length and diameter ratio is around 3, which explains the model of the centrifuge. GN’s 14 inch decanter centrifuge can be used for various purposes due to the VFD design. The typical working speed of this model is 3200RPM, at this speed, the fine solids with size down to 2-5 microns could be separated out without adding additional chemicals. By reducing the speed to around 2000RPM, this unit can be used for barite recovery in solids control system.

The bowl material of this unit is duplex stainless steel 2304 which is much better than SS316L. The centrifugal casting technic makes the bow material has a better distribution feature for better balance.

This unit is equipped with temperature sensor at both bearing seats to inspect the temperature of the bearing. And a vibration sensor is installed on the base for abnormal vibration. All the sensors are used to collect information of centrifuge running and send signal to the VFD control panel. By uploading program into the VFD panel, the panel could monitor the centrifuge and trip off the unit for protection.

The VFD control panel matched to the centrifuge has 3 VFDs for main and back motors of the centrifuge and the feeding pump. Operators could set the running parameters on the HMI screen to adjusting the centrifuge running condition. GN’s VFD panel is positive pressurized explosion proof method, together with the air conditioner, the VFD panel could be used in hazardous are with very high ambient temperature.

Both the decanter centrifuge and control panel are made by GN self. For more information on GN’s decanter centrifuge and other mud recycling equipment, please feel free to contact with GN.

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written by GN solids Control

Feb 12

GN solids control specializes in the development and manufacture of drilling mud solids control systems and drilling waste treatment equipment. GN solids control is the leading brand of solid control equipment at home and abroad. We have established branches in the US and Russia.

The water-based mud drilling fluid waste-processing system designed and developed by GN solids control is described as follows:

First, the system consists of:

1. Material collection and transmission system

2, cuttings dry processing system

3. Waste mud and wastewater solid-liquid mixture modulation system

4, centrifugal separation and dehydration system

5. Drilling treatment system

6, electronic control system

Water-based drilling fluid waste while drilling treatment system

Water-based drilling fluid waste while drilling treatment system

Second, the system industry characteristics

1, cuttings collection + cuttings dry + curing treatment system

The use of cuttings collection tank, screw conveyor, drill chip dryer, and cutting chip solidification system is beneficial to the treatment of different solid control systems under the condition of a drilling drill to discharge waste cuttings and carrying mud or running pulp. The harmless treatment of the drill cuttings with mud is also conducive to the rapid drying and semi-automation of cuttings treatment. It is easy to realize the safe disposal of cuttings and realize the clean production of drilling.

2, waste mud modulation + centrifugal separation dehydration system

The waste slurry generated by cementing and clearing can be broken and stabilized by a high-efficiency composite type breaker. It realizes fast and efficient solid-liquid separation of waste mud, saves floor space, and can fully realize the rapid gel breaking and stabilization treatment of waste mud.

The mud centrifuge processing module will be separated and dehydrated by adding waste mud such as gel breaking and flocculation. The initial rapid separation of the mud water is achieved, and the effluent is relatively clarified and the mud cake is formed.

3. Drilling sewage air flotation + precision filtration system

The sewage separated by the centrifuge is subjected to flocculation oxidative decolorization and emulsified oil demulsification separation treatment through a first-stage high-efficiency shallow air flotation device. Realize the flocculation separation, oxidative decolorization and petroleum-based removal treatment of small and medium organic matter in drilling wastewater. Then use high-fiber ball filter for high-precision filtration treatment to achieve wastewater reuse or efflux standard treatment.

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written by GN solids Control

Feb 12

Introduction of GN sohttp://gnsolidscontrol.com/lids control armored mud recovery system

First, the mud recovery system

The GN solids control armored mud recovery system is a mud circulation system that is designed and manufactured by GN Company according to the user’s requirements and according to the customer’s specific requirements for the treated mud. The system utilizes the flocculation dosing system to improve the processing capacity of the centrifuge. The system is powered by the GNG30A-075/GNG30A-075D screw pump. The user can select different dosing positions and dosing types of the flocculation system to make the mud have Different flocculation effects, so that the mud centrifuge achieves the desired satisfactory treatment effect, and the treated particulate matter is excluded from the system by the screw conveyor.

Mud recovery system

Second, the basic performance of the mud recovery system

1. The system has two warehouses: one is the mixing chamber, and the other is the storage chamber after the mud treatment; the whole system can remove most of the solid particles above 2μm after being processed by the centrifuge.

2. The mixing tank is equipped with a heating rod, and the customer can also replace the heating rods of different models and powers according to the needs of use.

3, design mud processing capacity: 5 m3 / h, rated mud processing capacity: 5m3 / h, adapt to the environment: -15 ° ~ 50 °.

4. Adapt to mud viscosity: ≤45 S.

5. Adapt to climatic conditions: rain, snow, fog weather.

6. It can work continuously under rated power.

7. Working height range: It can work normally at altitude ≤ 2500 m, and it can work effectively when the altitude is ≥ 2500 m.

8. All equipments of the system are mature technology new products, and the technical performance meets the relevant requirements of SY/T5612-2007 “Design Specification for Petroleum Drilling Fluid Solid Phase Control Equipment”.

9. The whole machine has reasonable design, compact structure, flexible combination, advanced technology, convenient operation and maintenance, and safe and reliable performance.

10. The system is easy to dispatch, transfer and transport, and can meet the domestic and foreign road transport regulations.

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written by GN solids Control

Feb 12

GN vertical dehumidifier uses centrifugal force to drain oil-based or synthetic-based drill cuttings. Stainless steel nets separate the “wet” solids and accelerate them to 900rpm. with G power of 420 G or super high speed of 1200 rpm. / min with a G force of 750 G. Liquid is passed through a hole in the grid, while “dry” solids are extracted using an angled flight attached to a cone that rotate somewhat slower than a rotor. The scraper is protected by a coating with carbide tungsten of abrasive solids and provides a long service life. This helps in keeping a constant gap between the scraper and the mesh, which is crucial for proper operation.

For waste management,normally client will use centrifuge together with vertical cutting dryer

Worker Show on GN Vertical Dryer Oil Based Waste Recycling Before Recycling After Recycling, OIL Content: 2.9% water based. So he meets the customer’s requirement to use one system for recycling with a lonely good result, without changing the treatment method for various drilling waste.

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written by GN solids Control

Feb 12

In the past, CIPPE 2018 in March of this year, GN Solid Management, showed an installation to install an oil sludge set to 1 set. This unit has all the necessary functional device for extracting oil from the oil sludge; it can be used in a small-scale oil sludge purification system or as a demonstration device for the user to check if the GN solution can solve the problem of oil sludge disposal. Many visitors to the GN booth have shown their interest in trying this equipment. One of the visitors contacted GN several days after the show and placed an order for this system. This sludge treatment unit consists of a pre-mix procedure, two-phase separation and three-phase separation. The main technologies used are flushing flushing for demulsifying and separating oil for different phases, such as oil, water and solids. The goal is to recover as much oil as possible and to get as little waste as possible.

Customer feedback suggests that the treatment of waste sludge, installed at GN, provides an effective solution for treating waste oil sludge in a well at the place of its installation. They are considering the possibility of starting further cooperation with GN by placing an order for a GN-type sludge treatment system with a large processing capacity.

The pre-mix procedure applies a pre-mix tank with a heat system, as well as a chemical dosing system. Oil sludge must be with a certain liquidity for easy transportation and mixing with chemicals.

The GN Mini Shale shaker GNZS752 and the 9-inch GNLW224 decantation centrifuge are basic equipment used in two-phase separation mode, this is the main GN product that has been approved with good performance and quality. sludge.

The images here show oil, water and solids discharged from the three-phase separation process. In this step, a disk centrifuge is used to receive the liquid discharged from the decantation centrifuge. When operating at high speeds, a disk centrifuge can effectively recover the oil from the slurry. GN can provide a larger capacity sludge treatment system to help the customer recover the oil and get more benefits. For more information, please feel free to contact GN

written by GN solids Control

Jan 20

GN Solids Control is a manufacturer of solid-liquid separation equipment and waste mud environmental treatment equipment, and can provide various qualification certification and quality certification equipment worldwide. It has been exported to more than 70 countries and regions, and its products are distributed in many mud treatment construction sites around the world. Some parts of the GN Solids Control waste mud treatment system are: 1. Dry sieve. 2. Centrifuge. 3. Flocculation and drug treatment equipment. 4. Mud conveying equipment. 5. Mud mixing module. 6. Store the transfer module. The most important core equipments are dry sieve module, centrifuge module and flocculation dosing module. This paper mainly introduces flocculation and dosing module system.

Dewatering Unit
Dewatering Unit

GN Solids Control GNDU2000R Series The 20-foot-box flocculation dosing system is automatically equipped with a chemical flocculant to assist the decanter centrifuge to separate fine particles from the mud, resulting in relatively clean water for wastewater reuse. Or used for sludge separation, separation of oil and cement and other fine particle separation needs.

By using the GN Solids Control GNDU2000R series of 20-foot containerized flocculation dosing system with GN Solids Control high-speed variable frequency decanter centrifuge, the ultra-fine particles in water-based drilling mud can be separated to meet the requirements of recycled water. For waste mud treatment systems, the Crown Flocculation dosing system is especially important to help the centrifuge process the mud to be clean and to reduce the generation of drilling waste. Thereby reducing the overall disposal cost of the post-disposal slurry.

Description of the operation of the GN Solids Control PAM automatic flocculation dosing system:

During the automatic dispensing of the medicament, the operator adds the medicament to the medicament configuration box. After starting the system, the medicament is mixed with water and first enters the stirring solvent tank, where it is thoroughly stirred and mixed by the agitator; After the box is full, it will overflow to the ripening solvent tank, and then mix and mix again here; after the ripening solvent tank is full, it will overflow to the drug storage box, and the configured liquid can be added. The medicine pump is put into the dosing point, and the fine particles are flocculated to accelerate the precipitation to maximize the solid discharge in the waste mud.

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written by GN solids Control

Jan 13

Connect last page,we will continue talk GN solids control centrifuge system advantage

5, main bearing lubricant flow, liquid level monitoring


The flowmeter and the liquid level switch are installed on the lubrication station of the centrifuge; the flow rate of the lubricating oil is monitored, and the shutdown protection program is started when the liquid level is low.


6, the feed flow meter


A feed flow meter is installed at the feed end of the centrifuge to monitor the feed flow rate of the centrifuge in real time.


7, the feed pump requires frequency conversion.


The feed pump is a variable frequency controlled mud pump. The speed determines the flow rate and the motor speed can be adjusted to control the flow.


8, security


8.1 Main bearing temperature protection: The main bearing is installed with a thermocouple to measure the temperature, the temperature reaches 85 degrees alarm, and 95 starts the shutdown protection program.

8.2 Vibration protection: The vibration switch is installed on the body. When the vibration is greater than 7.1 mm / s, when the vibration is greater than 10 mm / sec, the shutdown protection program is started.

8.3 Torque overload protection: When the torque of the motor is greater than 90%, the flow rate of the feed pump is automatically reduced. When the torque of the motor is greater than 110%, the shutdown protection program is started.

8.4 Lubricating oil level protection: When the liquid level is low, the centrifuge starts the shutdown protection program.

8.5 Start interlock protection: There is a start and stop interlock protection program in the PLC program. The start can only start the auxiliary machine first, then start the main machine, then start the feed pump; stop it can only stop the feed pump first, then stop Host, then stop the auxiliary machine.

8.6 Motor temperature protection: When the motor temperature is higher than the set alarm value, the alarm is displayed on the HMI. When the motor temperature is higher than the set stop value, the shutdown protection program is started.


9, automatic stop design when blocking(Explosion Proof Pressurized VFD Control Panels)


When the material is blocked, the current and torque will be overloaded. At this time, the PLC and the inverter will start the automatic stop protection function.


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written by GN solids Control

Jan 06

In recent years, GN Solids Control has developed construction waste mud treatment equipment for construction waste mud generated from subways, tunnels, bridges, and slotted continuous walls. The main equipments include centrifugal separation device and chemical treatment device, which can realize automatic operation, energy saving, emission reduction, high efficiency and environmental protection. It solves the construction environmental problems for the majority of users and reduces the construction difficulty.

Introduction to automatic control of mud centrifuge separation system:


1, speed, differential speed, differential speed detection


Drum speed, auxiliary machine speed, differential speed are monitored by PLC in real time and displayed in real time on HMI; differential speed = (drum speed – auxiliary motor input speed) / differential differential ratio.


  1. After each run is completed, the automatic cleaning line needs to be run.


The selection buttons “stop flushing” and “stop no flushing” are set on the HMI. The user can select according to the actual situation; the shutdown flushing process is: after stopping the liquid supply pump 30S, the flushing valve (electric) is turned on, and the flushing valve is closed after 10 minutes. (Electric), then stop the main motor for 20 seconds and stop the auxiliary motor after 30 seconds.


3, vibration monitoring


A vibration switch is installed on the centrifuge body. When the vibration is greater than 7.1 mm/s, the vibration protection is activated when the vibration is greater than 10 mm/sec.


4, spindle bearing temperature


The main bearing at both ends of the drum is equipped with a thermocouple to measure the temperature, the temperature reaches 85 degrees alarm, and 95 starts the shutdown protection program.


We will talk rest info in next page,to be continue……

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written by GN solids Control

Jan 01

GN Solids Control is a professional manufacturer of drilling mud solids control equipment. It currently produces equipment in more than 70 countries and regions around the world, providing drilling solids control equipment for dozens of oilfield service providers around the world. The after-sales service has a global radius, responding 24 hours a day to customers around the world, and fulfilling the after-sales service commitment within 72 hours. Four important branch structures have been established around the world, with the United States, Russia, Dubai, and North Africa as parts supply and after-sales services.


The following is a very simple and practical mud mixing system:

System components:


  1. Armoured mud tank device: size 8000*2600*2200mm, volume 20 cubic meters, armored design for transportation and hoisting and mobile construction projects. The round mud mixing tank has no dead angle design, the mud is evenly stirred, and the mud condition is beneficial to the drilling construction service. It includes convenient design such as ladders, walkways, guardrails, manifolds and valves.
  2. Mud transfer pump: GNSB6*5C-13J, motor power 45kw, conveying capacity 150 cubic meters / hour. The main purpose is to transport the mud to carry the mud material in the funnel into the mixing tank.
  3. Mixing hopper: GNSLS045A, mainly used for adding dry powder mud materials.

      4. mud agitator: GNJBQ075DD, motor power 7.5kw, speed 60 rev / min, double impeller, mainly the mixing and miscibility of the dry powder slurry material and water.

  1. Electronic control system: It is mainly to control the explosion-proof control system of the above equipment that needs mud mixing work.

In the drilling environment, the uniformity of the mud will greatly affect the drilling work. In order to ensure the mud supply flow and quality, the mud mixing should be taken seriously.


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written by GN solids Control

Dec 23

GN Solids Control is the first manufacturer of mud solid-control equipment in the country to pass the EU CE certification export standard qualification. The EU’s export certification standard is undoubtedly a high standard of internationalization. Through years of hard work and practice, GN Solids Control has been unanimously recognized and praised by European certification bodies, and won the continuous orders of European users. GN manufacturing is undoubtedly the first professional manufacturing of China’s drilling solid control equipment into the European market. Business. China’s high-end equipment manufacturing industry is generally lower than the manufacturing level of European and American countries. Starting late, unable to master the core technology is a high threshold for many manufacturers. GN Solids Control is the first to go abroad and actively learn to innovate. After more than 10 years of efforts, GN produces Equipment has been exported to more than 70 countries and regions around the world.


At present, GN Solids Control has researched and researched various fields in the international market this year, and has developed a variety of mud processing equipments with world-class levels. Centrifugal sand is one of the core products with high standards, high performance and wide use.


GNSB series centrifugal pumps are mainly used for mud and sewage transportation. They can be used as mud supply for solid-liquid separation equipment, including desanders, desilters, centrifuges, filter presses, filters, mixing funnels, etc. All GN Solids Control centrifugal pumps are mechanically sealed and the wear parts are cast from wear-resistant alloy ductile iron. The base is integrally cast, and the GN centrifugal pump has the advantages of high interchangeability and high universality. The material has high hardness and wear resistance and has a service life of more than 20% higher than that of ordinary sand pumps.


As a widely used pump, centrifugal pumps are used in different scenarios in the global market. GN Solids Control also considers the after-sales maintenance requirements while producing pumps. GN Solids Control’s pump parts can be combined with some international brands Li Xin Pump 100% interchangeable to improve pump efficiency

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written by GN solids Control