Centrifugal pumps play a crucial role in the oil and gas drilling field. They are commonly used for various applications, including:

Mud Circulation: Centrifugal pumps are used to circulate drilling mud during the drilling process. The pumps help to transport the drilling mud from the mud pit to the drilling rig and then through the drill pipe to the drill bit. They maintain the necessary pressure and flow rate to cool the drill bit, remove rock cuttings, and provide lubrication.

Mud Mixing and Conditioning: Centrifugal pumps are utilized to mix and condition drilling mud by adding chemicals, additives, and weighting materials. These pumps ensure proper blending and consistency of the mud, which is essential for maintaining drilling stability and controlling formation pressures.

Drilling Fluid Transfer: Centrifugal pumps are used for transferring various fluids in the drilling field, including water, brine, diesel, and other chemicals. They help in supplying water for drilling operations, transferring fluids between storage tanks, and facilitating the movement of fluids within the drilling rig.

The diameter of the impeller in a centrifugal sand pump has an impact on the flow rate and head.

Flow rate: Generally, an increase in impeller diameter leads to an increase in the flow rate of the sand pump. This is because the increase in impeller diameter results in higher rotational speed, which in turn increases the centrifugal force of the pump. The increased centrifugal force allows more liquid to pass through the pump, thereby increasing the flow rate.

Head: The impeller diameter also affects the head of the sand pump. Typically, an increase in impeller diameter leads to a decrease in the pump’s head. This is because the increase in impeller diameter reduces the rotational speed of the centrifugal pump, resulting in a decrease in centrifugal force. The reduced centrifugal force leads to a decrease in the pump’s head.

It is important to note that the relationship between impeller diameter, flow rate, and head is interconnected and influenced by other factors such as pump design and impeller shape. Therefore, in practical applications, GN Solids Control suggests users to consider multiple parameters to determine the optimal impeller diameter that meets specific flow rate and head requirements. For specific applications, it is recommended to consult with professional engineers or pump manufacturers for more detailed and accurate information.

GN Solids Control has successfully completed the delivery of a customized drilling solids removal unit to a customer in South America. The system has been specifically designed to cater to the requirements of diamond core drilling mud processing.

The complete system comprises of several key components that work together seamlessly to ensure efficient and effective solids removal. Firstly, there is a compact and efficient small size shale shaker, model GNZS752J-MDZJ. This shale shaker is designed to efficiently separate the solid particles from the drilling mud, thereby ensuring a cleaner and more stable mud for the drilling process. The small size of the shale shaker allows for easy mobility and installation in locations with limited space.

In addition to the shale shaker, the system also includes a small size high-speed decanter centrifuge. This centrifuge plays a crucial role in the separation process, as it is capable of removing even finer solid particles from the drilling mud. The high-speed operation of the centrifuge ensures rapid and efficient separation, leading to a high-quality drilling mud with improved performance.

To facilitate the mixing of chemicals and additives with the drilling mud, a centrifugal pump is provided along with a mixing hopper. This allows for the controlled and precise addition of necessary materials to the mud, enhancing its properties and ultimately improving drilling efficiency.

To house all of these separation and mixing equipment, GN Solids Control has designed a robust mud tank. This tank has a generous size of 4100x2215x1312mm, providing ample space for the equipment and ensuring ease of operation and maintenance. The tank is constructed to withstand the harsh conditions typically encountered in drilling operations, ensuring longevity and reliability.

To effectively control all the separation and mixing equipment in the system, GN Solids Control offers a complete electrical control system. This system provides precise and intuitive control over the various components, allowing operators to easily monitor and adjust the parameters as required.

With this customized drilling solids removal unit, GN Solids Control once again demonstrates its commitment to delivering industry-leading solutions. The system not only meets the specific demands of diamond core drilling mud processing but also provides enhanced performance, efficiency, and reliability.

GN Solids Control is a leading manufacturer and supplier of drilling mud agitators for the oil field industry. Mud agitator plays a crucial role in the drilling process by keeping the drilling fluid or mud properly mixed and preventing solids from settling.

GN Solids Control mud agitators are widely used in drilling mud system, the motor power shaft length and impeller diameters are customized based on the mud tank specs, it can be used for trip tanks, for shale shaker tanks, for desander tank, detailer tank, vacuum degasser tank, centrifuge tank, mixing tank, suction, reserve tank, pill tank, etc…

The advantages of GN Solids Control mud agitators include:

High Efficiency: GN Solids Control mud agitators are designed to provide efficient agitation, ensuring uniform mixing of drilling fluid and preventing solids from settling. This helps maintain the desired properties of the drilling mud.

Robust Construction: GN mud agitators are built with high-quality materials and undergo rigorous testing to ensure durability and reliability even in harsh oil field environments.

Easy Maintenance: GN mud agitators are designed for easy maintenance, with accessible components and simple operation. This minimizes downtime and ensures smooth operation during drilling operations.

Customizable Options: GN Solids Control offers a range of customizable options for mud agitators, including different motor power, impeller size, and shaft length, allowing for tailored solutions to meet specific drilling requirements.

Overall, GN Solids Control mud agitators are trusted by oil field operators worldwide for their efficiency, reliability, and durability, making them an excellent choice for maintaining optimal drilling fluid performance.

In addition to mud agitators, GN Solids Control offers a wide range of drilling waste management equipment that is essential for efficient and environmentally friendly operations in the oil field. Some of the key equipment supplied by GN Solids Control includes: Decanter Centrifuges, Vertical Cuttings Dryers, Screw Conveyors, Dewatering Units, and so on.

It is best to have the decanter centrifuge and slurry feed pump, along with their control systems, provided by the same manufacturer. The slurry feed pump for the decanter centrifuge must be associated with the centrifuge’s main control cabinet and have interlocking functionality. It should be capable of reducing the slurry feed rate during overload and stopping the operation in case of severe overload.

GN Solids Control manufactures decanter centrifuges of different models and sizes and can provide a complete control system solution for the centrifuge and feed pump. If the customer intends to use their own feed pumps when purchasing the centrifuges, it is important to gather information about the pump’s motor power, whether it is a fixed-speed or variable-speed pump, and the type of control system used for the pump. It is necessary to arrange for communication between the customer’s electrical engineer and our electrical engineer before placing the order to establish the interlocking functionality of the centrifuge and pump control systems. This ensures smooth system operation and avoids equipment damage due to overload or operational issues caused by the lack of interlocking functionality.

Whenever possible, it is recommended that our company controls the slurry pump for the centrifuge through the provided control cabinet, regardless of whether it is a variable-frequency or fixed-speed control. The task order should clearly specify the pump power and whether it requires variable-frequency control or non-variable-frequency start-stop control.

If the decanter centrifuge is used in conjunction with an oily sludge treatment system, we strongly recommend using a variable frequency centrifuge with three VFDs (Variable Frequency Drives). The three VFDs can adjust the main drive, auxiliary drive, and slurry pump of the centrifuge according to the actual needs, to adapt to different processing requirements. Without using a variable frequency centrifuge with three VFDs, the system operation may be limited, resulting in poor treatment efficiency or operational issues.

GN Solids Control manufactures 2-phase decanter centrifuges, 3-phase decanter, as well as other waste treatment equipment for the oil and gas drilling field, non-oil industries, and industrial separation. We also produce waste treatment equipment for the oilfield environmental protection industry. Please feel free to contact us for inquiries and quotations.

GN Separation is the branch company of GN Solids Control. Recently, GN Separation is complete and production and commissioning of a 3 phase decanter centrifuge for overseas fish oil processing plant. All the material standard and production process are specially done to suit for the food industry centrifuge applications.

The decanter centrifuge model for fish oil separation plant is GNLWS364-VFD. The model is designed for 3-phase separation. The bowl of the decanter centrifuge is 14 inch. And the length and diameter ratio of the decanter centrifuge is up to 4. VFD control panel is equipped for the high speed decanter centrifuge. The operators can adjust bowl speed and conveyor speed based on the material situation and their separation demands. The enclosure of the VFD control panel is container steel for more durable. And hte VFD control panel includes 3 VFD control for the main drive motor, for back drive motor, as well as the VFD control on the feeding pumps.

The manufacturing time of decanter centrifuge is much longer than other separation equipment, like shale shaker, degasser, mud cleaner, etc… As the components of centrifuges are much more complex, and it takes more testing during production and before delivery.

Every decanter centrifuge made by GN Solids Control / GN Separation will be fully inspected and test before delivery from GN factory. Below is the general testing process in GN factory for every centrifuge before delivery.
1. After assembly, the decanter centrifuge must be running at the rated speed without load for at least 4 hours.
2. The decanter centrifuge will further be test with water at rated speed for at least 30 minutes, and the total water test should no less than 2 hours at the factory.

Besides the 14 inch 3 phase separation decanter centrifuge, GN Solids Control makes other small size and bigger size decanter centrifuge and disc centrifuges for various applications. And plus, GN Solids Control makes oil field shale shaker separator and mining industry screen separators.

GN Solids Control finished a complete a solids control mud system for a drilling company in India. It is a 3-tank mud system plus a separate trip tank and separate pill tank.

The trip tank is equipped with mud agitator and a small size centrifugal trip pump. And plus, there is a radar level gauge equipped on the trip tank for the auto start / stop of the trip pump.

There are 2 active tanks and 1 water tank, each tank with usable capacity 250bbl. The #1 active tank is shaker tank, which is holding 2 sets of solids control shale shaker, a 1200GPM vacuum degasser, a desander, and a desilter mud cleaner. As the mud system is designed for offshore rigs, the double deck shale shaker GNZS706 is applied in the system. It is a 6-panel double deck shale shaker with linear motion.

After shale shaker and before desander, desilter separator, there is a 1200GPM vacuum degasser applied in the system. All the mentioned separation equipment are allocated on the shale shaker tank. And there are electrical control panels on the tank top to control all the equipment in the system. 37KW (50hp) centrifugal pumps are used as feeding pump of desander and desilter.

The #2 active tank is mixing tank. And plus, there is a 14 inch high speed centrifuge applied in the system. It is a fixed speed decanter centrifuge with high speed for low gravity separation. Vertical slurry pumps are used in the system to feed for the decanter centrifuge. The model of the feed pump is GN50YZ40-10B with 5.5kw explosion proof motor. There are 2 feeding pumps in the system, one for feeding, another one is for back up. A vortex and venturi mixing hopper unit is used in the system for mud mixing. A 37KW (50hp) centrifugal pump is used as mixing pump for the hoppers.

The # 3 mud tank is a 250bbl water tank. There is no separation or mixing equipment used in the water tank. There are pipelines connecting the water tank to all the rest active tank and mixing tank compartment.

Decanter centrifuge and disc centrifuge are both widely used in oily sludge separation system. Compared with filter press, centrifuge separation has the advantages of supporting continue separation, and less human being involved in.

Before centrifuge separation, double deck shale shaker is used to remove the big particles and sand, and to reduce the mud weight. The advantage of using a double deck shale shaker in the oil sludge treatment system is that it does not block the screen in the presence of fibrous or coarse particle materials. Customers choose the screen opening or API size of the upper coarse screen and lower fine screen based on the distribution of the incoming materials.

Hydro cyclone is not used in oil sludge treatment systems because the viscosity of the oil sludge material is usually high, and the cyclone separator can easily block. The bottom fine mesh screens of the double-layer shale shaker can replace the separation effect of the cyclone. Compared to cyclone separation, the separation efficiency of shaker screen particles is 100%, and particles larger than the screen aperture will be 100% separated.

Below is a general introduction of decanter centrifuge and disc centrifuge.

Decanter centrifuge is horizontal type centrifugal separator. There are 2 phase decanter centrifuge and 3 phase decanter centrifuge. 2 phase decanter centrifuge is for liquid and solids separation. It can allow solids content till 15% ~ 20%. But the less solids content, the better separation result.

3 phase decanter centrifuge is for oil, water and soil separation. Operators can change the degree of the liquid discharge dam to adjust the clearness of oil and water. The recovered water and oil can be reused in the system. But it is for a general separation, the water is not clean, and the oil is not pure still with soil and water. And the soil cake is not dry.

Disc centrifuge is a kind of vertical centrifuge. It is for 3 phase separation. Disc centrifuge can get relative clean water, and oil, and get dryer soil cakes. But disc centrifuge is easy to be blocked, it must be check and viewed timely. It means it can only allow small soil content before enter into the disc centrifuge. Hence the disc centrifuge is normally used after 2 phase decanter centrifuge or 3 phase decanter centrifuge.

CIPPE in Beijing is the largest exhibition related to oil and gas industry and petroleum field. 2023 Beijing CIPPE was hold from 31 May to 2nd June 6. Although the weather is hot, large number of visitors and exhibitors were coming from long away. GN Solids Control got back from the big event Beijing CIPPE oil show. Old clients and new clients were meet on GN booth, and arrange factory visiting outside the exhibition.

In order to help clients have a better understanding on the development and improvement of GN Solids Control, and do not need to go here and there, GN took its major separation equipment and transfer equipment on the booth.

Item #1 on display: Transfer equipment Solids and sludge vacuum pump.

Item #2 on display: Transfer equipment Screw conveyor

Item #3 on display: Separation equipment big bowl decanter centrifuge 22 inch
GN Solids Control makes various models 22 inch decanter centrifuge to suit for various material separation. The design and size of the bowl will be modified based on the project situation. Some times, the material standard should also be suit for the material demands. In this case, it is necessary for GN sales engineers to communicate and know more about clients separation demands.

Item #4 on display: Separation equipment high speed decanter centrifuge 14 inch
GN Solids Control makes various models 14 inch high speed decanter centrifuge to suit for various material separation. The design and size of the bowl will be modified based on the project situation.

Item #5 on display: Separation equipment disc centrifuge. The disc centrifuge is for 3 phase separation. As the disc centrifuge can only allow small percentage soil content, it is easy to be blocked, it is normally used after 2-phase decanter centrifuge.

Item #6 on display: Separation equipment vertical cuttings dryer.
Drilling waste vertical cuttings dryer is specially designed and made for oil base mud and oil base cuttings. It can reduce the oil on cuttings to less 5%.

Item #7 on display: Separation equipment high G drying shaker.
High G drying shaker is for drilling waste management, it is used after solids control system. It is mainly used for water base mud and water base cuttings.

Based on its major production decanter centrifuge for liquid and solids separation, GN Solids Control develops its application scope from oil and gas drilling, non-oil drilling and trenchless slurry separation, to industry separation.

GN Solids Control with its sister brand GN Separation can covers more and more liquid and solids separation field, such as oil sludge separation decanter centrifuge and disc centrifuge, mining slurry separation decanter centrifuge, chemical industry decanter centrifuge, Ore And Minerals Separation decanter centrifuge, Grinding And Polishing Liquid separation decanter centrifuge, plastic recycling decanter centrifuge, Soda Plant Waste treatment decanter centrifuge,  Pulp & Paper industry waste treatment decanter centrifuge, and so on.

The centrifuge size GN Solids Control & GN Separation making covers sizes from mini size 9 inch, to popular size 14 inch, and big bowl 18 inch, 22 inch and up to the huge bowl 30 inch. There are few manufacturer in the world have the capability to make big bowl centrifuge up to 30 inch. GN Solids Control can make. And for the same bowl diameter centrifuge, GN Solids Control has various models with various design and material standard to cater for different applications. For example, for normal industry and for food industry, the material grade and the grease grade are much different. And even the processing technology various much.

Right now, GN Solids Control is working on a 14 inch decanter centrifuge overseas Electrolytic Purification of Copper Application. The model of the 14 inch centrifuge is GNLWS364, compared with the GNLW363D series, GNLWS364 has a bigger bowl length and diameter ratio up to 4. The centrifuge bowl diameter are both 14 inch, but GNLWS364 is longer in order to suit for the specified applications.

The centrifuge is equipped with VFD control panel, plus PLC smart control and HMI touch screen. The VFD panel cabinet is made from stainless steel with Grinding And Polishing Liquid. All electrical components are choose from top and international famous brand. The VFD drive brands is INOVANCE / ABB. The PLC brand is Siemens or Omron.

GN Solids Control makes various size slurry separation equipment to treat the slurries which is generated from trenchless activities, piling, pipe jacking, super vac activities.

This week, GN Solids Control is working on the assemble and commissioning of a full package slurry separation system. The slurry treatment system is designed and made for a New Zealand client for their super vac excavation slurry. The system is customized with the client’s red color.

Below are the major separation equipment used in the slurry equipment:
The first separation equipment: the mining separation screen separation device for coarse separation.
The second separation equipment is the High Frequency Vibrating Screen for fine solids separator.

The 3rd separation equipment is desilter mud cleaner. 4 inch desilter assembly was used for further clarification. The cut point of 4 inch desilter is 27 microns. It means most of the particles above 27 microns will be removed and discharged from the desilter separator, and falls down to the under flow shale shaker.

The 4th separation equipment is high speed decanter centrifuge. The cut point of high speed decanter centrifuge is 2 ~ 5 microns. The slurry enters into decanter centrifuge already treated by the previous screening separator and the desilter mud cleaner, the solids content is lower, and there is no particles bigger than 30 microns. After treatment of decanter centrifuge, most of the fine solids above 2 microns will be removed.

After some circles of above separation, the ulti-fine solids smaller than 2 microns will be more and more. In order to solve the situation, chemical dosing unit will be applied to used together with high speed decanter centrifuge for dewatering treatment. The chemical dosing unit and the decanter centrifuge used together for lower gravity solids separation.

Screw conveyors are used along with the mud system for carrying the solids waste discharged from the system.