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The persons who know solids control equipment may know well on the shale shaker and mud cleaner unit. These 2 machines are very common in solids control system that do solids separation job from the first to forth stage. The shale shaker is located at the very beginning of the mud recycling system for primary solids control; the coarse cuttings could be removed by the shale shaker. While after treated by the shale shaker, the drilling fluids would be transferred to the mud cleaner for further treatment.
For the purpose of easy maintenance, in the same solids control system, the mud cleaner is equipped with under drying shaker that is same model as the primary shale shaker. Mud cleaner is just a machine on which the cyclone frame was fixed above. The mud cleaner unit is only able to be used to separate the solids via the hydrocyclone units. Why the mud cleaner unit cannot be used as a shale shaker even if it has the under drying shaker? This is really a good question. GN’s engineer equipped a logging tank to the mud cleaner unit and the mud cleaner unit becomes a shale and mud cleaner composition unit.

Normally, GN’s shaker unit has back type logging tank that is used to collect the drilling fluids coming out from the drilling hole. The drilling fluids accumulated in the logging box firstly and then overflow into the shaker deck, thus the shaker screen will not be damaged by the high pressure drilling fluids. This unit could be used as a shale shaker unit.
De-sanding and de-silting cyclone are installed on the mud cleaner for finer solids separation. The solid discharged out from the bottom nozzle of the cyclone also has high pressure that will shorten the screen life if directly dropped onto the screen surface. To avoid this situation, there is a hopper collection box that is used as buffer between the cyclone and screen. To make this machine compact, GN’s engineer designed to insert the buffer box into the logging box, which means the logging box is also used as second buffer box for the cyclone unit. This is the function of mud cleaner.
One thing need to be noted is this shaker and cleaner machine can only be used for one function one time: either shaker or mud cleaner. This is a cost saving unit with small footprint, for some project not very urgent, this unit could be a very ideal choice. GN ever showed this unit at Beijing CIPPE, much attention was attracted there.

To be a professional manufacturer for solids control equipment, GN has nearly 10 years experience on decanter centrifuge research and fabrication. With these years development, GN decanter centrifuge have been supplied to the many giants in the oilfield industry. Subsidiary company of Halliburton, Baker Hughes, COSL and some other world famous company tried GN decanter centrifuges and gave good remarks.
A company has to keep improving if he wants to live for a long time. GN is an example for continuously upgrading the existing equipment and developing the new products according to the market feedback. At the beginning of foundation of GN Solids, GN only made middle speed decanter centrifuge that can only be used in normal drilling fluids recycling system, like barite recover process and some high speed unit could be used in fine solids separation. The middle speed model and high speed model will be kept in the same one mud recycling system.

Thanks to the many kind clients’ feedback and valuable suggestions, the only thing GN did in the past years was to perfect the design of the centrifuge and improve the quality. Nowadays, GN’s 4th generation decanter centrifuge is under design processing. The best seller of GN C version decanter centrifuge could be electric controlled as fixed speed or variable speed. The PLC design high standard positive pressurized control cabinet is available. Top quality centrifuge bowl material duplex SS2205, optimized feeding direction and high standard material for solids discharge touching parts make GN decanter centrifuge could be adopted in waste cuttings management system, drilling fluids de-watering system, and crude oil tank bottom sludge cleaning out of solids control system. In the past two years of winter of oil business, it was widely application of GN’s decanter centrifuge that brought GN many orders which kept GN alive, even became bigger than ever before.
GN’s second facility close to HQ will be launched into use very soon. This facility is specialized used to develop centrifuges. Most industries could be a GN’s future market like the sewage treatment, environmental projects and food industry. Actually, it is because many inquiries coming from these industries, which urges GN to expand into these areas. Where there is a request, there is a market.

Mud Agitator is one of the solids control equipment that is mainly used to mix the drilling fluids in the mud tanks to keep the solids inside the drilling fluids suspending other than sedimentation down to the tank bottom.
GN’s sales team ever received many inquiries on the mud agitators; unfortunately, most of the clients have no idea on how to choose the right model for their project and even don’t know how to use the equipment properly to ensure a longer life time.

GN’s sales are good at understanding clients’ specific request by asking few simple questions. With the answer from the clients, GN always could give the best proposal for clients. Now let’s see what these questions are and what information GN need to give a proposal.
a. What is the inside dimension of the mud tank or pit. From this question, GN will know the inside length, width and depth of the mud tank, and then GN will know how long the agitator shaft should be suggested for clients and how big impeller should be used. For the deep mud tank or pit, the stabilizer will be provided to hold the agitator shaft for stable performance.
b. What is the shape of the mud tank, cylinder or rectangular? Then GN will know how to design the agitator.
c. What is the electric specification, mainly GN would like to know the jobsite electric voltage and frequency. Different countries may have different frequency, the 50 Hz motor cannot be used under 60 Hz, and safety is ever the first think we should keep in mind.
d. What is the S.G. of the liquid? For very thick liquid, GN will propose bigger horse power motor to drive the agitator.
Mud agitator is always installed in mixing tank with jet mixing unit, active mud reserve tank and trip tank. For some clients who get the mud agitators from GN and make the mud tank by themselves, GN always recommends them to make the mud tank with same dimension, thus they can get the agitator all same model, which would be much better for clients’ future maintenance. GN suggest the RPM setting of the mud agitator between 40-96, too high will disturb the solids suspending, while too low will lead to solids sedimentation.

GN’s decanter centrifuges are 2 phase type and mostly used in oilfield for drilling fluids fine solid particle separation and waste management as GN is known as a China leading professional manufacturer for solids control equipment for oil & gas industry. However, according to the working principle, the centrifuge should be able to be used in some other industry for liquid and solids separation just like the dredging slurry separation and construction site solids removal.
GN ever sent one solids removal system including shale shaker and decanter centrifuge to London for the construction project there. On the construction site, the worker may use water to wet or mix some construction material. Nowadays, most of the office building has parking area at the ground floor of the building. When the beginning of building, the workers will operate the rotating drilling machine to drill some holes on the ground for piling. This type of drilling will also need water for cooling down the drill bit and take out the drilling cuttings from bottom of the drilling hole.

GN’s solids removal system is used to separate the solids and liquid. On construction site, it will be used to remove the stone and other large size solid particles from the water. The unit sent to GN’s customer in London was a 2 phase solids control system. The configurations are as below:
1 unit shale shaker with 3-panel screens for primary solids control could remove most of the large size solid particles. The solid particles on construction site would be various from sand, stone, leaves and waste cans. The shaker could remove almost all the coarse particles by using the wire mesh screens.
1 unit decanter centrifuge with speed up to 3200 rpm is used for fine solids separation. GN’s centrifuge is made of excellent material on bowl and screw propeller for long lifetime and easy maintenance.
1 mud storage tank is divided into two compartments for sand trap under the shale shaker and clean liquid collection under the centrifuge. 2 pumps are installed on the tank skid. One of the pump transfers the slurry from sand trap compartment to the centrifuge, another one is used to transfer the liquid out from the tank for reusing.
GN’s mud tank system is with the CE certificate thus the clients from Europe could use GN’s mud system freely without worrying about the compliance. For any request, welcome contact GN for more information.

Centrifugal pump is widely used on oilfield for the drilling mud transferring in solids control system. Even in the same mud system, the centrifugal pump could be used for different application.

Centrifugal pump used as transferring pump for the cyclone unit

De-sander and de-silter are very traditional solids control equipment. They are located after the shale shakers and fed by pump unit to remove the solid particles in the drilling fluids. Centrifugal pump is an ideal choice for transferring the drilling fluids to cyclone unit as the cast iron impeller could bear the abrasion of thick solid particles in drilling fluids. Normally, both de-sander and de-silter would be equipped with each centrifugal pump with same capacity.

Centrifugal pump used as trip pump for when rising up the drilling pipe

When replace the drilling bit or drill pipe, the rig winch will raise the drilling tools out of the well. At this time, extra drilling fluids need to be injected down to the well hole to keep the pressure balance in the well. The drilling fluid is pumped down to well by using the centrifugal pump. By checking the amount of returned the drilling fluids, the operator could know the earth layer pressure and if there is any leaking under the well hole.

Centrifugal pump used as mixing pump for mud mixing

All the mud recycling system need mud mixing system for pre-mix the drilling fluids and adding the additional chemicals in the fluids during drilling process. The chemicals are brought to the mud tank system by the drilling fluids running in the jet mixing system. The power of the flowing fluids is coming from the mixing pump. Centrifugal pump can also be used as the power source of the mud gun line in the mud recycling system. In the same one mud system, it is better to use same model centrifugal pump for feeding cyclone and mud mixing, as the future maintenance would be convenient.
GN’s centrifugal pump is coupling connected with electric motor. All the parts are interchangeable with the world famous brand pump. If any requirement, please feel free to let us know.

In past couple years, GN Solids Control is keeping research and development the new products so that clients could get a turnkey solution for drilling mud solids control and waste management. With the gradually issuing of the new environmental regulations, the drilling operators focus their eye on the final solution of disposal on the drilling waste.

Solidification unit is a new developed product of GN for the final treatment of drilling waste including drilling cuttings, oil bottom sludge and so on. It is not firstly designed and manufactured by GN; some other world famous waste management equipment supplier already made and sent if for onsite application. As a leading manufacturer of waste management equipment in China, no doubt, GN will develop this type of equipment.
So far, GN’s solidification unit already been sent to customer’s site for application and the feedback was good. GN’s solidification unit has 2 chemical storage tanks where the operator could put the cement and lime in it. By adjusting the feeding rate, the chemicals and waste would be fed to the mixing vessel. Here the waste would become inactive material that will not pollute the soil and water. Furthermore, the discharges can be used to pave the road for site.

Customer firstly fed wet waste into this unit and the treatment result is not as good as expected. Later, GN’s engineer told them this solidification unit is used to treat the waste what firstly should be treated by the dryer unit. Like the drilling cuttings could be treated much dryer by the high G force drying shaker and vertical cuttings dryer unit.
GN is also thankful for the good suggestions from customer on perfect the design of this unit. And GN did upgrade the design and make it more compact for site layout and transportation. For some points request good sealing, GN also took into consideration. Any interest on GN’s solidification unit, please feel free to contact with us for more information.

Most of the horizontal directional drilling mud system is not equipped with decanter centrifuge unit as by using the 3-phase separation system including shale shaker, de-sander and de-silter unit, it can work good enough for removing the solids from drilling fluids. Centrifuge is relative high cost, which is also a reason the drilling contractor doesn’t equip it in the mud system.

However, for some high request drilling condition, the driller may use the heavy mud for better drilling performance. Sometimes the drillers add the certain chemicals to make the drilling mud heavier so that the mud can better protect the wall of the drilling hole. If the driller went to drill another well, the heavy chemicals need to be separated, and then the centrifuge could be used to do this job. In some other conditions, after many times recycling of the drilling mud, there is much ultra fine solid particles that cannot be removed by the shaker and cyclone unit, and then the centrifuge unit is needed.
GN Solids Control has nearly 10 years in fabricating the drilling mud system for HDD projects. This type mud system need to be compact structure and easy for transportation. See the picture in this article, both the de-sander and de-silter unit are equipped with under flow shaker for drying the discharged solids. The shakers used are 2-layer screen design. The bottom layer screen is used as primary shaker and upper layer screen to dry the discharges out from the cyclone units. This design greatly reduces the footprint of the mud system. And all tank top surface equipment are pre-installed on a frame with same base dimension as storage tank. When transport the mud system, the shaker and decanter centrifuge units could be removed by lifting the frame for fast disassemble. With the frame, the equipment could be easily transported by flat bed trailer.
GN can provide both standard and customized HDD mud system for clients. Just send us your request, and then you will get a satisfying and cost effective solution.

Derrick, NOV and Swaco are well known to all people who work with solids control equipment. These are the 3 big guns in this industry. It could be seen from that, almost every corner of the world, their equipment are running. During this oil business depression, most of the drillers, mud service companies and even oil field service companies who have mud engineering business abandoned these 3 brands and convert to find some other brands with cost effective price but same good quality.
There are several solids control equipment manufacturer in China. Customers from abroad have no enough information to tell who qualified manufacturer is. GN Solids Control devoted himself in this industry for nearly 10 years, would like to share below information on GN to tell everyone who want to make a deal with solids control manufacturer in China.

1. What certificates you have to be a solids control manufacturer
GN Company was founded in the year of 2007. And 1 year later, GN got the certificates from API. From that time, GN became the first API certified solids control equipment manufacturer in China. So far, GN is also the number one solids control manufacturer who has passed most times of the examination by API in China. GN also got the certificates of ISO, HSE, CE certificates issued by DNV and Russia Customs Certificates.
2. What is your facility looks like
GN’s facility is up to around 400,000 square meters including 2 factories near Beijing downtown and airport, which is very convenient for customers’, visiting for business negotiation and delivery inspection. In the year of 2013, GN set up the facility (sale office and warehouse) in Houston, USA. Till now, GN has finished the inventory in Houston warehouse for several of GN main equipment like shale shaker, decanter centrifuge and cuttings dryer. For the wear parts of shaker screen, GN also has stock in Houston. In the year of 2014, GN did establish the sales office in Moscow, Russia.
3. What did you do and what are you doing
Only the company who is continuously researching and improving can live longer and get bigger. From the beginning of the foundation of the company, GN made the normal solids control equipment and system. Till now, GN can provide drilling waste cuttings management system to finally make the hazardous waste environmental friendly. GN is not only an equipment manufacturer, but also a turnkey solution provider. In the year of 2015, GN got the approval of National New High-tech Enterprise, which is the best prove of GN’s willing to be the number one of solids control manufacturer in China.
4. Who choose GN Solids Control
Today, GN’s equipments are running in over 60 countries and regions. Many world famous enterprises have ordered from GN. Baker Hughes, Halliburton, Shell and COSL respectively ordered waste cuttings management equipment from GN solids control. Moreover, good remarks were sent back to GN on the performance of equipment. Some of the customers even repeated order from us. If you don’t know much on GN’s equipment, or you want confirm what we done ever before. Welcome to GN, we have many real cases for potential customers to refer. Facts speak louder than words.
4 reasons would make you convinced on why GN is the top class manufacturer of solids control equipment. For other solids control brands in China, you can ask them same questions and see what answers you can get.

In drilling mud solids control system, pumps are used to transfer the drilling fluids from one machine to another. Submersible slurry pump is one type pump installed vertically on mud tank or mud pit. In GN designed solids control system, this type slurry pump is often used in HDD project and feeding to centrifuge wherever it is used.

Submersible pump used in HDD mud system

GN has standard model of HDD mud system ranging from 200GPM to 1500GPM. All the models are compact structure. The used drilling fluid in this horizontal drilling comes out from the drilling hole and accumulates in a mud pit. It requests a pump to transfer the drilling mud to the mud system. Above picture perfectly shows the how the submersible slurry pump is installed vertically on the mud pit to transfer the drilling mud to the shale shaker in the HDD mud system. As this pump is installed out of the mud system, when making the quote to clients, GN always recommends an independent submersible slurry pump as an option.

Submersible pump used as centrifuge feeding pump

In an oil and gas drilling mud system, after treated by the de-silter cyclone, the drilling mud will be pumped to decanter centrifuge for fine solids separation. Vertically installed in mud tank will ensure a larger tank compartment capacity for more drilling mud storage.
GN’s submersible slurry pump is single stage single suction type pump that is usually used to transfer the slurry with larger solids content. There is no bearing and gland seal between impeller and pump body; hence the slurry pump is maintenance-free and high temperature resistance. Submersible slurry pump is an ideal equipment to transfer the mud to centrifuge and HDD shale shaker. Besides, it can also be used to feed the de-sander and de-silter.

Every year, GN Solids Control will manufacture and export large quantity mud tanks used in drilling fluids solids control system. As a specialized manufacturer of solids control equipment, the rectangular shape mud tank is one of GN main production. Besides this type mud tank, GN is also able to design and manufacture the oilfield fuel tank.

Oilfield fuel tank is used to store the fuel like diesel to be used in engine that supplies the electric power for the oilfield. GN just finished the fabrication of one unit fuel tank and right now this unit is put in our assembling yard for delivery. From below picture, it could be seen that this fuel tank is very striking red color telling people this tank is used to store flammable material.

How this Fuel Tank Works

1. GN’s fuel tank is designed horizontal cylinder type to be mounted on an oilfield three runner skid for drilling site easy moving. There are 2 tanks, one fixed horizontally on skid is the main tank for fuel storage, and the other smaller one could be lifted vertically when using to be used as a temporary storage tank from where the fuel will flow to the engine. If need to be transferred to another site, the smaller tank could be put down horizontally for easy and save transportation.
2. These 2 tanks are connected with hose pipe for fuel transferring. The transfer power source is the pumps mounted on the skid. 2 pumps one is in use while the other one standby. The bigger tank has a capacity of 8 cubic meters, it could be transferred a quarter of capacity to the smaller tank. It means the capacity of the smaller tank is 2 cubic meters. After raised up, the fuel in the smaller tank could flow to the engine freely under the gravity.
GN’s fuel tank is designed to be able to put in a 20 ft container for easy sea transportation. For more information on this fuel tank or other solids control equipment, please feel free to contact with us.