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GN Solids Control has an oil sludge treatment system which is used at Qinghai Oilfield in China. The system is used since May 2018 till now. It is a customized oil sludge waste reduction system. Clients are happy with its performance.

Many clients are showed great interest on the system, below is some information of the system to let people know more.

1.The system is used since May 2018 till now, the location is Qinghai Oilfield in China.

2.The liquid content of the raw material oil sludge is 70% – 80%.

3.There is a pre-mixing and heating modular in the oil sludge separation system. Oil sludge will be heated up to 60C degree, during the heating process, chemicals will be enhanced into the process procedure to help for separation. The chemical enhancing is based on the material situation. If the material is easy for separation, heating and chemical dosing may be not needed. It depends on the separation result.

4.There is a double deck drying shale shaker in the customized system for pre-separation. After shale shaker, there is a desander separator.

5.After desander mud cleaner, it is decanter centrifuge separation by an 18inch big bowl centrifuge. There are 2 sets GNLW453C-VFD centrifuge for ultra fine solids separation.

6.There are 2 types of sludge vacuum pump for sludge and slurry transfer in the system: GNSP20B and GNSP40B.

7.The system for the client is 2-phase separation. After separation, clients get clean oil slurry with small percentage ultra fine soil. The oil slurry recovered from GN oil sludge system will be further treated by slurry separation system to get oil and water. The final solid waste is taken to third party the biodegradation and pyrolysis company for processing.

GN Solids Control can also offer 3 phase separation after the 2 phase centrifuge sepration to get clean oil, water and solids.

Big bowl decanter centrifuge is a major separation equipment for oil sludge treatment. GN Solids Control makes 2-phase decanter centrifuge for liquid and solids separation, and 3-phase decanter centrifuge for water, oil and solids separation. The centrifuge bowl sizes are vary from mini size 9 inch to big bowl 22 inch size and the largest big bowl 30 inch.

Last week, some sets of GNLW554ET- VFD decanter centrifuge were shipped to an clients doing oil sludge treatment. GN Solids Control makes T Series Decanter Centrifuge mainly for dewatering treatment and for thickness.

GN T series decanter centrifuge for dewatering / Thickening is with beach angle of 8.5 degree. It is widely used for maximum dewatering requirements of municipal and industrial waste water sludge. The dewatering decanter centrifuge is designed for easy separation material include large particle size, high density difference of solid and liquid, low viscosity, high concentration, high treatment capacity and higher dryness than clarity. The materials like sludge or wastewater containing fine particles usually need to be added with flocculants to gather the fine particles condensed into large ones, and then dewatered with T series decanter centrifuge.

Applicable Material of GN Solids Control T Series Decanter Centrifuge can be used to treat below materials, but not only limited to them: Drilling mud, environmental protection sewage, oily sludge, cutting fluid, sand washing water, mineral washing water, soda white mud, salt mud dewatering, magnesium aluminum emulsion, steel-making waste water, precision casting waste water, construction mud, tunnel mud, mine waste water, industrial waste water, organic waste water, aquaculture waste water, chemical industrial waste water, printing and dyeing waste water, municipal sewage, river sludge, water plant sludge, lake sludge, kaolin grading, calcium carbonate, bentonite, Silica, titanium dioxide, calcium sulfate, barium sulfate, conductive film glass polishing solution, aluminum hydroxide, cryolite, silicate, oil sand separation, landing oil, oil sludge, coal tar, inorganic fertilizer, Chinese medicine extraction such as taxus chinensis, honeysuckle and liquorice, clarification, concentration and dehydration of salt crystals, etc

The most popular bowl size used for oil sludge separation is 9 inch, 14 inch and 22 inch decanter centrifuge. For the 3 bowl sizes, GN Solids Control has 2 model series to suit for different material situation. The 2 model series are defined per the ratio of bowl length and bowl diameter. GNLW223, GNLW224, GNLW363, GNLW364, GNLW553, GNLW554.

Regarding the 3 bowl diameter 9 inch, 14 inch and 22 inch decanter centrifuge, the ratio of bowl length and bowl diameter can be 3 or 4. The ratio 3 serials decanter centrifuge can be used for oil and gas drilling fluids treatment. The ratio 4 decanter centrifuge is specially designed for oil sludge treatment and waste water, waste oil treatment.

GN Solids Control makes full line drilling mud solids control equipment and drilling waste management equipment. GN Solids Control is also capacity to make high quality replacement shaker screens. Besides makes replacement shaker screens for GN Solids Control own brand shale shaker and mud cleaner. GN Solids Control is also a famous screen manufacturer for various models and brands shale shaker.

GN Solids Control makes high quality composite frame pretension screen. The screen internal is supported with metal frame for reinforce. The screen external are covered by special material plastic which contains fiber glass for durable at high temperature. The external plastic is made from hot press by hot press machine. Compared with traditional metal frame, it is more environment friendly during manufacturing. And the quality is much more stable and under control. As the traditional metal frame frame cover plastic by dipping, which causes more pollution. And more man power involved during manufacturing. The quality is not stable at automatic machine production line.

Some clients may think composite frame shaker screen is an excellent screen on quality and performance, but they are not environmental friendly and a high carbon foot print for decades to come. They prefer the company to make the decision to revert back to metal frame screens to as a commitment to the environment and to reduce carbon foot print . They think Metal frame screen platform can be recycled for other manufacturing applications.

It is good question. When people talk about plastic, it may mean pollution. But this plastic which GN Solids Control use to make screens is PP (polypropylene). It is (C3H6)n only have C and H to produce CO2 and H2O if burning. This PP (polypropylene) plastic is relatively less environmental impact. And In many countries like in China, there are some companies who can do the recycling of the composite frames made by PP (polypropylene) and metal.

GN oil sludge separation system is a kind of reducing processing to reduce the waste volume, and to prove processing efficiency of next stage separation equipment, like thermal desorption unit.

Many clients are interested in GN Solids Control Oil Sludge treatment machine. They check video from GN website or from You Tube showing how does GN oil sludge separation system work. They will contact GN Solids Control if have questions. Below are some questions the clients normally ask.

1) We have both sludge and grease, does GN Solids Control Oil Sludge treatment machine work with both?
2) How much is the productive energy?
3) How much is the the viscosity and density of the recovered oil?
4) Does GN Solids Control Oil Sludge treatment machine treat solid sludge and grease mixed with sand?
5) what kind of oil does GN Solids Control Oil Sludge treatment machine produce? Is it fuel, diesel…? If we can have more details about the produced oil properties, like the density, and the viscosity.

The normal capacity of GN Solids Control Oil Sludge treatment machine is 1 m3/h, 5 m/3 and 15m3/h. Although the normally has shale shaker separator in the system, the handling capacity is defined by decanter centrifuge not shale shaker. As decanter centrifuge has the min. treating capacity in the system.

GN Solids Control has many equipment and oil sludge separation system in environment protection companies, waste management company, mud service company, and other companies who handle waste materials. GN Solids Control also has many separation equipment, especially decanter centrifuges used at refineries to help them separate ultra fine solids from waste oil. But the treatment technology of GN Solids Control is only physical separation. Sometimes, heating and chemical enhancing will be used to help for achieving a better separation performance.

GN oil sludge separation system is to separate liquids and solids. The final productions from GN oil sludge separation system are water, oil and solids. But it will not change the oil parameters.

GN Solids Control waste management decanter centrifuge is specially designed for drilling cuttings and various waste material. It is widely used after high G drying shaker, Vertical cuttings dryer for drilling cuttings treatment. Or used together with chemical dosing system for dewatering treatment.
Compare with normal decanter centrifuge in China or from U.S, Europe, GN Solids Control decanter centrifuges have below advantages.

GN decanter centrifuge is made per international high standard specially designed for drill cuttings and waste management. Below are some necessary features. It is much more durable than economic standard. :

GN decanter centrifuge Bowl material is Duplex Stainless Steel 2304 and by centrifugal casting; While other Chinese brand or even U.S brand are normal SS304 or SS316 made by casting. GN material grade and processing technology are both better. It ensures a better dynamic balancing during high speed operation. So GN waste decanter centrifuge has less vibration compared with other brand centrifuges at the same working situation.

GN decanter centrifuge Screw Protection is Tungsten Carbide Tiles. It can last for longer life and is easier for replacement;

GN decanter centrifuge Solids Discharge is 360° type with wear protection with 6 fully covered tungsten carbide discharge wear liners. And it is interchangeable.

GN decanter centrifuge Liquid Discharge port is protected by adjustable Weir Plates. Operators can adjust the wetness per material situation.

All Bearings used in GN decanter centrifuges are from international top brand: Original SKF or FAG.

GN Solids Control special designed mobile skid is heavy duty telescopic skid with operation height 2800m, or 4100 per clients request. Both the feeding screw pump and VFD control panel can be mounted on the skid for easy movement. There are foldable walkways and guardrails make the skid easy for movement and easy for job site layout. And it is safe and convenience for operator to go up and down to check and centrifuge operation. Clients likes GN design much.

GN Solids Control made a small liquid and solids separation system. The small system is customized for an Europe company per clients request. The client asked for a small recycling unit with cleaning capacity of about 12-15 m³ / hour. The client wants a small single centrifuge in the small recycling system.

GN Solids Control customized a compact system which is composed of a small size shale shaker and a mini size decanter centrifuge. The shale shaker and decanter centrifuge are located on a mud tank together with a centrifuge feeding pump and electric control cabinet for the whole system. Tank size for the whole system is 3900Lx2250Wx1300H (mm) for easy movement. It is a small capacity recycling system with turn-key solution. All connections inside the system are included.

The Shale shaker separator model is GNZS752F-MDZF. It is a 2-panel small size shale shaker with small footprint.

The Decanter centrifuge model is GNLW223D-VFD. It is a 9” baby centrifuge for fine solids separation. The Cut point of GNLW223D-VFD centrifuge is 2 ~ 5 microns.

The color, brand and logo are all customized per client’s request. GN Solids Control is capable to make other customized system per clients job site situation. Clients can contact GN Solids Control sales engineer to get customized solutions.

Besides the small mud recycling system, GN Solids Control makes various sizes of Mud Recycling System for HDD, water well drilling, Trenchless, Piling and TBM activities.

The major applications of GN mud recycling system covers below field, but not only limited to below:
1) Trenchless HDD Project
2) Bored Pile Project
3) Micro TBM (Tunnel Boring Machine)
4) Diamond Drilling, Water Well Drilling etc

Below are some Mud Recycling desanding plant Models GN can make:
D Series Mud Recycling Models:
1)GNMS-200D Capacity: 200GPM, 50m3/h
2)GNMS-500D Capacity: 500GPM, 120m3/h
3)GNMS-1000D Capacity: 1000GPM, 240m3/h
4)Other models should be customized per clients’ request

Many clients do not know how to choose the right model solids control and drilling waste management equipment to suit for their projects. Below are some comments and suggests from GN Solids Control to help clients make decision. For more assistance, clients can contact GN Solids sales engineers.

1. Shaker screen. To ensure accurate cut point, clients must to choose replacement shaker screens which are confirmed to API RP13C. In order choose the right model replacement shaker screen, firstly clients need to confirmed the shaker model, once shaker model confirmed, screen size is known. And then based on the requested separation point to choose right API size. For different brand replacement shaker screen, the same API size screens are interchangeable.

2. High speed Decanter Centrifuge or low speed decanter centrifuge Package complete with feed pump, connection hoses and control panels.
GNLW363C fixed speed centrifuge is recommended as high speed and low speed operation. It is the most popular size 14 inch decanter centrifuge. Operators can change pulley and belt to get another fixed speed.
Fixed speed centrifuge is easy for operation and maintenance, and its cost is much lower than VFD centrifuge or FHD centrifuge.

3. Screw conveyor Auger transfer for drilling cuttings
GN Solids Control makes screw conveyor with auger diameter vary from 10″ 12’’ 14’’, 16’’ and 18’’. The auger body is equipped with grab wire for emergency stop.
Suggest clients to choose a size auger to min. spare parts stock.
GN augers are combined by standard length 12ft per section. 14” dia. with 36ft transfer length is recommended. You can remove the middle section to use it as 24ft, or add another middle section to use as 48ft.

4. Sludge transfer pump
GN Solids control have various types transfer pump. Clients should tell GN Solids Solids Control their request for model selection, like what is the material for transfer, mud, cuttings, solids, or others? What is the transfer capacity want to reach? What is the transfer length? GN Solids Control has submersible slurry pump, and vacuum pump for solids and sludge transfer, it is driven by air. Users should offer air supplier. It can be supplied by air compressor, or supply air from the rig site. GN Solids Control also makes centrifugal pump.

GN screw press dewatering unit is designed and made to treat sludge and sewage waste water. GN screw press dewatering machine is widely used in sewage treatment projects of municipal, aquaculture, food, starch, oil, pharmaceutical, chemical, paper, leather and other industries.

GN screw press dewatering unit is a kind of economic and environmental friendly sludge dewatering treatment product. It is a new type of sludge extrusion dewatering equipment by using the principle of screw extrusion, through the strong squeezing force generated by the change of screw diameter and screw pitch, and the tiny gap between the floating ring and the fixed ring, to realize solid-liquid separation.

GN dewatering screw press unit includes below items:
1.PLC Smart control electrical panels for automatic control.
2.Chemical enhancing dewatering system for mixing and dosing flocculants into the waste water, slurries or sewage.
3.Sludge thickening and dewatering device
4.Liquid collecting tank to receive the recovered water from the screw press treatment.

GN dewatering screw press unit is with automatic control technology, which can mix and enhance flocculants automatically. After chemical enhancing, the screw dewatering press unit can running continuously to complete the sludge thickening and squeezing, finally return or discharge the collected filtrate liquid.

Besides dewatering screw press unit, GN Solids Control also makes automatic tank cleaning system. GN system is running automatically after preset parameters of the control panel. By adding the right tested chemicals, operators can achieve a satisfied liquid separation result. It can save time and save water in this case to further save cost. Some users of automatic tank cleaning system mentioned that, before without the automatic tank cleaning system they took 4 ~ 5 workers to clean one tank with 4-6 hours, now they just need 2 workers to clean one in 2-3 hours. It saves 80% man power and operation time.

If clients could share some technical demands, GN Solids Control is willing to check with engineering team and offer a customized solution to suit for clients; projects.

Shale shaker model GNZS594F is designed and made by GN Solids Control to treat drilling mud for oil and gas drilling, HDD, TBM, CBM and other drilling activities. It is a linear motion shale shaker.

GN Solids Control keeps optimizing the product design and material base on jobsite performance. GNZS594F is the 6th generation shale shaker from GN Solids Control. It is the latest shale shaker model from GN Solids Control. It avoids most problems happened before and add some additional features per clients’ demands to make the shale shaker more durable and more user friendly.

GNZS594F shale shaker uses the same shaker screen with Mongoose shaker. GN Solids Control also makes mud cleaner with the same under flow shale shaker GNZS594F. The hydra cyclone unit on top of the shaker deck is easy to be removed. Once remove the desander and destiler cone unit, the mud cleaner can be used as a separated shale shaker.

Compared with other brand shale shakers, GN Solids Control shale shaker owns significant advantages:
1) GN GNZS594F shale shaker is utilizing composite frame pretension shaker screen, its life time is longer than traditional metal frame shaker screen and hoop type shaker screen. And composite frame screen usable area and screen conductance is better than traditional metal frame screens.
2) GN GNZS594F shale shaker and mud cleaner is fixing shaker screens by wedges. Compared with fixing screens by bolts, wedges is a very much and easy way for screen changing.
3) The GN shaker bed below the shaker screen is made from stainless steel to have anti-corrosion features for longer life. And the whole shaker deck is after heat treatment for more durable.
4) GN Solids Control shaker deck is sealed by oil-resistant sealing rubbers. It is GN patent design. And the shaker deck sealing rubber is interchangeable. The patent shaker screen seal technology can avoid fine solids bypass, and it makes the shale shaker deck easy for maintenance.
5) Mechanical Deck angle adjustable while working system to work reliably for different drilling fluids

Some sets of 500GPM mud desander plant will be ready for shipment in the coming week. They are ordered by a China domestic client for their trenchless drilling machines. The mode of these 500GPM mud desander plant is GNMS-500D. It is a very compact desandind plant to treat drilling mud from trenchless drilling well. The GNMS-500D desanding plants are customized with clients color and brand.

There is a double deck mud cleaner used in the system. The dirt drilling mud from trenchless well will be fed to the bottom deck of the double deck desander mud cleaner. As there are high sand contend and even rocks from the trenchless drilling well, PU screens or metal frame screen with bigger screen opening will be used for the bottom deck for screen separation. After the screening separation, the rocks and sands bigger than the screen opening will be 100% removed from the system, the liquid phase will pass the screen and fall down to the mud tank.

A centrifugal pump on the tank slop will suck and transfer the shale shaker recovered drilling mud to the 10’’ desander hydrau cyclone for desanding separation. The cuttings point of 10’’ desander hydrau cyclone is 57 microns. The clean drilling mud separated from 10’’ desander hydrau cyclone will flow to trenchless drilling rig well, or goes to storage tank. Hydrau cyclone is not a 100% separation device, there will be some percentage of usable clean mud be discharged together with sands.

As the 10’’ desander hydrau cyclone unit is mounted on top of the double deck shale shaker. The discharged dirty mud will be separated again by the upper deck screens to further recovery the usable drilling fluids. There are pressure while the dirty mud discharged from 10’’ desander hydrau cyclone, if they falls down to the screen surface directly, the mud will damage the shaker screens very soon. In order to protection screen and extend the life time. GN Solids Control equips small hopper under the 10’’ desander hydrau cyclone for damping.