Centrifuge has widely application on different industries, such as chemical industry, energy ,environment, beverage. All centrifuge utilized the centrifuge force generated under high rotated speed. Whatever decanter centrifuge, disc centrifuge or tube centrifuge. Today, we will classify the decanter centrifuge through the separation purpose. In generally, there are totally 3 types separation , dewatering, clarification, and separation. Dewatering is to remove out the liquid phase in the solid phase, and clarification is to remove the solid phase in the liquid phase. Concentration is to make solids in the solution increases.

Dewatering is to remove out liquid from solid as much as possible. As usually, user want to get the discharged solids much dryer much better. To reach this target, the sludge need to stay more longer time inside centrifuge bowl, and solids content of discharged liquid is high relatively speaking. The cone angel was designed smaller to speed liquid discharge ,and make solid phase stay longer time in side centrifuge. Totally opposite with dewatering centrifuge ,clarifying centrifuge require to bigger cone angel as much as possible. Big cone angel will increase the length of liquid processing section, which can make the liquid stay longer inside centrifuge. User usually can get the clean liquid and wet solids. Except the above both types , separation centrifuge make it balance for discharge solids and liquid. Cone angel is in the middle between dewatering and clarify.
The cone angel of centrifuge decided the application of decanter. So when we select centrifugal model ,we need to clear what purpose we want, what treating capacity you need, and also the solids content. The centrifuge capacity is depend on the solids content of material. High content will reduce capacity. Except this, we also need to pay attention to bowl material. As usually ,centrifuge use the high strength stainless steel such as SSR 205，316L. When process slurry with chloridion , make sure the chloridion content is below the Limit, otherwise it will corrosive steel ,and damage it.

Last week we shipped out one dewatering system to Canada for lake sludge dewatering. This is the biggest dewatering system we provided to America market. As we all know Canada have strictly mange to environment, their government invest money on the pollution control especially on the water source protection.

This dewatering system was used to treat the sludge dredged from Quebec lake. Remove out the solids and clench the water, and then discharge water back lake. It is a huge system, actually our equipment is just partial of the whole project, and in charges of the mechanical separation. After our system, it also equipped other machine for the water purification. What we provide is shale shaker, desander, desilter , Decanter centrifuge, screw conveyor and also mud tank. The sludge transfer into shale shaker and desander for primary separation to remove out the big size particle. After that , the discharged liquid need to feed into Decanter centrifuge to separate out particle smaller than 60um. In this project, we built 2 unit GNLW764 Decanter centrifuge, which is the biggest model of GN. The designed treating capacity is 140 cube meter per hour, and actual capacity is about 120 cube meter. This 764 model was especially designed for waste water treatment project to meet client requirement to big capacity.

Client has high request to automation, and reduce the labor working as much as possible. Every separation equipment has a screw conveyor to catch the discharged solids , and transfer it to truck to transport out. The operator finish all the work through the central control box.

GN has been in river dredging project for many years, we have provide many sets system to China and abroad. In north America market ,GN built 15 sets dewatering system. Our competitive price, technical support and high customized solution made our equipment more and more famous in America. If you have similar project , welcome to contact us.

Drilling fluid is a circulating fluid used in drilling process. It is a mixture of liquid, solid and chemical. For a long time in the past, drilling fluid was commonly called “mud” at home and abroad, which is not accurate. Solid particles in drilling fluid can be divided into harmful solid and useful solid.Drill cuttings are the most harmful solid phase in drilling fluid, which will affect the physical properties in the whole drilling process, and increase the density, viscosity, dynamic shear force, water loss, mud cake, abrasiveness, viscosity and flow resistance of drilling fluid. In the process of drilling, drill cuttings will also damage the oil and gas reservoir, reduce the ROP, increase the rotary table torque, cause the rig sticking, and also downhole complex situations, such as lost circulation and blowout. At the same time, the drilling cuttings will cause serious wear to the circulating system. In order to economically and effectively eliminate harmful solid phase from drilling fluid. It is necessary to deeply understand the composition characteristics of drilling fluid.

The main functions of drilling fluid is cleaning the well bottom and carrying drill cuttings; Cooling and lubricating the drill bit and drill string; Form mud cake to protect well wall; Control and balance pressure; Suspended drilling cuttings; Provide formation data; Protect oil and gas reservoirs from damage.

Sometimes the clean water can be used as drilling fluid in well drilling. But for deep well and complex drilling, water is not enough. There need to add other material such as barite, clay, salt, oil to increase the mud density to reach the using. In actual drilling project, drilling mud is more complex than we are thinking. In different drilling stage or different geologic situation, it will also need to mix kinds chemical material to keep the mud property. Drilling slurry is the most middle material with lots function, which directly influence the drill efficiency and safety. Choose the good drilling mud and solids control equipment to make sure the drilling work.

Drilling fluid cost is an important part of the cost of the whole drilling project, which is usually expressed by the cost per unit footage, which involves the cost of some complex accidents (and can be avoided) encountered in the process of drilling and merging, such as sticking.
In many cases, the cost of drilling fluid also includes solid control, waste management and waste disposal. Therefore, it is equally important to reduce the cost drilling .Special maintenance and equipment are required to control the solid content of well fluid . If the waste liquid and cobalt cuttings produced by cobalt well fluid cannot be directly discharged into the surrounding environment, but must be transported away, generally speaking, it will also increase the cost of drilling fluid. Until now, the waste water-based drilling fluid can be directly discharged into the surrounding environment without any treatment. In many areas, government regulations prohibit the use of chromium containing substances, such as chromium lignosulfonate. In many areas, the use of chloride, nitrate and potassium salts in drilling fluid is forcibly limited, or the more common practice is the total conductivity of drilling fluid. Oil based drilling fluid, especially offshore, tends to be more limited than water-based drilling fluid, only oil-based drilling fluid with zero discharge measures (sometimes referred to as closed-loop system) can be used. In the United States, if the toxicity and biodegradability of synthetic based drilling fluid meet the standard requirements and do not produce fluorescence, it can usually be directly discharged into the sea. From this point of view, although the direct cost of synthetic based drilling fluid is generally higher than that of oil-based drilling fluid, its treatment cost is often lower. In this way, the use of synthetic based cobalt drilling fluid can be more economical than oil-based drilling fluid.

Choose the suitable drilling fluid and solids control equipment are the most important things to reduce the cost of drilling.

When drill some shallow well, such as water well,foundation well, which seems do not need drilling fluid. But in petroleum well drilling, the well depth may reach 7000 meters, this geology is more complex, how to guarantee the property of drilling fluid is the most important work for drilling, And drilling cutting is the main reason to influence fluid.

Therefore, the economic impact of drilling cuttings on drilling a well is very subtle. The increase of drilling cuttings content will not immediately lead to drilling disaster. When the bit stops drilling and the torque increases, the drilling staff immediately know it’s time to pull out; The negative impact of the increase in the amount of rock cuttings will not be shown immediately, so reducing the solid content is similar to buying an insurance policy to prevent accidents. It is difficult to ensure that some accidents (such as sticking) will not happen. No drilling engineering advocates sticking or fishing operations. However, even if special drilling rigs are used in a drilling area, sticking and fishing accidents often occur. The negative effect of rock cuttings is real. Understanding this fact and reasonably treating drilling cuttings on the ground will help to reduce drilling costs and raise the drilling efficiency.

Drilling cutting also destroy the pressure balance between outside and inside of the well, because drilling cutting will influence the fluid density, and reduce the fluidity of fluid. We can know that drilling cutting may destroy. Select the suitable solids control equipment is very important to make sure the drilling success. As usually, shale shaker is the first level separation ,desander is second ,desilter is third level. Sometimes we also will add degasser into the system. and also Decanter centrifuge as the last step. However ,Decanter centrifuge for some project is not necessary.
GN Solids control has been in this industry for more than 15 years, if you have these need, we can provide technical support and equipment for your project.

Till now, it is 14 year since GN solids control funded. We grew up from a small manufacture, and For now , we exported our products to 76 countries and served more than 2000 customers from all over the word. Currently , GN is still in the high speed development. This year we built our third factor with 80000 square meters. The new factory is almost double of the to of two using factories. In the third factory ,we will use more advance production line and also management. The long delivery has limited GN development ,after this third factory put into production, We can provide more quick delivery time.

It is not easy for a new brand to get trust from customer. However the stable quality and good support of technology and after salve service, which make us win the reputation from customer. We built long terms cooperation with lots big customer, and they are continue to place order from GN every year. This is a good success for GN Solids Control, and we can not reach it without the support of customer.

GN Solids America as the branch, we main serve the customer from north and south America customer. In 2021，all of us experienced a tough time. The pandemic still has big influence to us to return production , which make us had to delay the delivery time . However thanks for the understanding of our client . All is better now, we are speeding up to delivery the order as soon as possible.
Our colleague of GN Houston has been in holiday from yesterday. This is a wonderfully team, and they get good sales in 2021. The most important, GN this brand is gradually be known by some client , and stable quality is accepted by customer. We are really appreciate to all our customer, thanks for your support and trust. Hope all of you have a wonderful holiday and merry Christmas to everyone.

GN solid control as one of the leader in the solids control industry in the world ,we had served more than 2000 customers from all over the world. And also include the top oil gas companies in the world. Actually, we provided more or less equipment to every top 10 oil gas industry in the world for past 15 years. GN has become one of the most famous brand in the world. OUR equipment get the good feedback from client. Actually African is one of our biggest market and especially Nigeria. last week we shipped 3 oil sludge treatment system to Nigeria in the last end of 2021. This order is from our old client that cooperate with GN for more than 10 years.

Oil sludge treatment system is specially developed by GN for the oil drill cutting treatment . As we all know, in the petroleum well drilling ,which will use large mud to balance pressure of well ,carry the cutting from well and protect the well. These mud is very experience and also high polluted to environment. Recovery these sludge and reuse it is very necessary to save money and protect environment. From this photos we can see this system main include GN vertical cutting dryer and Decanter centrifuge.

Vertical cutting is specially used for oil base sludge. which work principle is similar with the dryer of clothes washer. Utilize the high rotation and generate separation force. The liquid will be separate out from material. The difference is this machine is continuous work, it can keep discharge solids. vertical cutting dryer can recover 95% liquid in the material. After treating by this machine. The discharged solids is dry enough to transport and it can not permeate into soil and reduce the pollution.
After that Decanter centrifuge will treat the liquid again for clarifying ,and then the liquid will back to mud system for drilling again. This is environment friendly and good way to save the cost of drilling, if you have need on these equipment, welcome to contact us.

GN Solids control as one of the earliest company in solids control industry. We had accumulate lots experience in equipment designing and manufacture. Till now, we had exported more than 76 countries and served more than 2000 companies include the top oil gas industry of the world. Our equipment get the good feedback and reputation from the market. Shale shaker is the first kind equipment we provide to market. After 15 years history ,we keep upgrading it to make it work well in different situation. Currently, it is our most featured equipment. Every year we sold out more than 200 units shaker to all over the world. Every month we almost ship 4 units shaker to GN Houston for north America market.

For north America market, we main provide GNZS-594 shaker. The max G force it 7.5G, which can meet most requirement of solids control project of oil gas industry. This G force is adjustable according to the actual situation. To convenient client get shaker screen in their local market, we design the shaker to use the same shaker screen with mongoose. So when client need to replace shaker screen, they can ask GN to provide it, or purchase it in their local. Four panels shaker screen designing ,make the sludge stay longer time on screen and separate out drill fluid as much as possible and also dryer the solids. GN select Italy OLI vibrator to guarantee the long lifetime and stable work performance. Reinforce the shaker deck, use the 303 stainless steel to improve the performance of anti corrosion. The shaker deck is adjustable between -1 to 5 degree, which is convenient for client to control the sludge treatment time through change the degree.

GN shaker has tested by more than though project, currently this shaker not only using in oil gas industry , but also for mining slurry, waste water treatment etc. It has been out most popular product. If you have the need of shale shaker, welcome to contact us.

Separation equipment is one main business of GN, which include screw press dewatering machine , Decanter centrifuge ,disc centrifuge, shale shaker and also mud cleaner. As usually ,shale shaker and mud cleaner are most applicant on the solids control industry, such as oil well drilling, HDD, TBM. But decanter centrifuge not only for these project, but also for environment and waste water treatment. Disc centrifuge is for clarifying liquid or liquid-liquid separation. We received lots inquires from farm plant and some company main process manure . All these client request we give out solution to remove out the solids from manure fermentation as much as possible.

This manure fermentation liquid include about 10% solids , and particle between 3 to 70 um. As usually , it is not allowed to mix polymer such as flocculant. Because sometimes, they will use these liquid for irrigation. That makes project hard to remove out solid. For this situation , we recommend Decanter centrifuge as the first stage separation equipment . The separation G force of Decanter centrifuge can reach 3000G, it can separate out 90% particle bigger than 5um. Reduce the solids content between 2%-4%. The discharged solids moisture is about 50%, which seems very dry by naked eyes. The discharged liquid will feed into disc centrifuge for further treatment. The solids content has been reduce below 4%, which is very appropriate for disc to separate. The separation of disc centrifuge can reach 7000-8000G. even the tiny solids can be separated. However, disc centrifuge is good to clarifying liquid. The discharged solids is very wet, client need to dry it by other equipment.

GN separation equipment has been used in many environment industry. Our equipment get the good feedback from customer. especially in America market. We designed our own separation system for hydrovac slurry treatment. and sold it for more than 15 sets. If you have the similar project, welcome to contact us, we will be glad to share our experience.

GN solids vacuum pump is one of our most featured equipment. It was totally developed by GN. Currently, only 3 suppliers can provide this kind pump in all over the world. And GN is only the China company. Every year, we export more than 200 units pump to all over the world, and this quantity keep raising every year.

Different with normal pump, GN solids vacuum pump driven by pressure air provided by air compressor. And this pump can transfer dry solids that smaller than 75mm , and it is good at pump high solids control material such as drilling cutting ,sludge that the normal pump can not pump. The special application makes solids vacuum pump become one of the most popular equipment in market. Vacuum pump does not have complex structure, only one mud tank with several air control valve. Utilize the high pressure to make a vacuum space in mud tank inside, and then suck material into tank. Finally input air into mud tank to push the material to discharge out. This simple structure is also one the bigger advantage of this pump,more simple structure,more stable quality.
However, this pump still wold be some issue after long time using. Most times, these problem was caused by the dirty air. Even there is air filter inside the vacuum pump ,but some things dirty still may block air line of pump. Inside of control box, there is one 5-way valve ,which is used to Switch air flow direction to control material loading and uploading. When the pump do not work well, Most time it was cause by the blocking of 5 way valve. Client can disconnect the hose of top and bottom valve. And then connect air source, through high pressure to blow out the dirty inside of the valve and finish the valve cleaning. Finally, return the hose position and run the pump again.

Most times, we can solve the pump issue through cleaning 5 ways valve. If the cleaning is useless ,you can contact GN , and we will give out the suggestion to help you solve this issue.