As one of the major liquid and solids separation centrifuge manufacturer, GN Solids Control exported many dewatering centrifuge systems to worldwide market, like Canada, British, Singapore, UAE… GN dewatering centrifuge system can be used in oil field and non-oil field.
GN Solids Control exported many big bowl dewatering centrifuge systems to Singapore for construction field waste water treatment. It can be used to treat and recycle waste water from horizontal directional drilling, from piling project, from micro tunneling projects, from dredge slurry separation projects, or from other pipeline and underground activities.
Recently, GN engineer come back from Singapore and finished the commissioning and training works of a new dewatering centrifuge system there. Now the waste water treatment system is running well, clients are happy with it.
The water centrifuge for Singapore client is very similar to other dewatering centrifuges sold there before. It includes below processing equipment:
1) Big bowl decanter centrifuge GNLW553C-VFD. It is a 22inch big bowl decanter centrifuges widely used for fine solids separation, for drilling mud separation and waste water treatment.
2) An automatically power chemical mixing and dosing system. The chemical dosing system will be used before the waste water feeds to the centrifuge bowl for flocculation.
3) As the construction waste water treatment is mostly took at near the city or in the city. There I a strict limitation on space. GN Solids Control fixed Both the automatically power chemical mixing and dosing system and the 22 inch big bowl centrifuge into containers respectively. And the 2 containers can be laid at 2 layers. The big bowl decanter centrifuge container will be put on top of the chemical dosing system container. It is easy for movement and can saves space.
The centrifuge dewatering system is used after the slurry separation system. The slurry separation system will remove most of the big size solids in liquid, to reduce the mud weight and the solids contents, and to make the waste water qualified for centrifuge separation. GN Solids Control can also offer the slurry separation system (C/W with shale shaker, hydro cyclone separator, feeding pumps, mud tank system, lighting system, electrical control system).
- Details
-
Published: 17 March 2018
This week, a full set of containerized drilling waste cuttings treatment system and some mud treatment shale shakers are ready for shipment to a Russia customer. Every year, GN Solids Control exported many complete sets containerized cuttings drying systems to worldwide market, especially for Russia. As Russia market is very cold. More of half time of a year is frozen weather. It request all equipment and system for Russia market should be good at keeping warming at frozen weather, many time, it may under 50 C degree. 
In order to keep warm and protect the equipment well, GN Solids Control put the drill cutting treatment equipment into the container, and there will be warming system all around the container.
The containerized cuttings drying system including a set of vertical cuttings dryer, a set of decanter centrifuge. A transfer tank with transfer pump is located between the vertical cuttings dryer and the decanter centrifuges.
As clients said, there are many vertical cuttings dryer brand in the market, GN Solids Control is the best. GN Solids Control makes the best vertical cuttings dryer among all dryers brand they used. And they will only buy drilling waste management equipment from GN Solids Control.
Russia is an important market for GN Solids Control, especially in the recent year. GN Solids Control develops well and fast in Russia market. As GN main products are drilling waste management treatment equipment, like Vertical cuttings dryer, high G dryer, high speed decanter centrifuge, screw conveyors, dewater unit, etc…
Middle east and Africa is another important market of GN Solids Control. Unlike Russia market, Middle east and Africa are most very hot reason, may time, it will up to + 55 C degrees. The equipment, especially the VFD centrifuge must be equipped with excellent cooling system to ensure a stable performance. GN Solids Control did it well. All job site cases proved that, GN Solids Control equipment can suit for -50 C degree to + 55C degree to cover the big temperature range.
- Details
-
Published: 12 March 2018
The Vertical Cuttings Dryer (V.C.D.) is used to pre-treat oil base cuttings and reduce the oil content (OOC: Oil on cuttings) to 3- 5%. In many countries, sands or cuttings with less than 5% or 8% OOC (Oil on Cuttings) is allowed to be discharged. The Vertical Cuttings Dryer (V.C.D.) can also be used to pre-treat the sludge oil.
Many customers cannot tell the difference of vertical cuttings dryer and decanter centrifuge for waste management application. They do not know what is the real difference between decanter centrifuge and VCD (vertical cuttings dryer).
Decanter centrifuge and VCD (vertical cuttings dryer) have different applications and functions while treating the drilling cuttings or the oily sludge.
Vertical cuttings dryer can be used to treat the drill cutting from shale shaker, mud cleaner, desander, and desilter. VCD cannot be used to treat cuttings from decanter centrifuges. As the solids from decanter centrifuges is too fine to remove. They will go through the screen opening of the VCD.
Some clients may ask what is the size and maximum size for screen to avoid the sludge to go through the VCD directly.
There are 3 sizes screen for VCD: 0.25 /0.35/0.5mm. All solids bigger than the screen opening will be removed by VCD, while smaller size particles than the screen opening go through the screen opening and is mixed together with the recovered liquid. 0.35mm is the most popular size.
As the solids smaller than VCD (vertical cuttings dryer) screen opening (0.25 /0.35/0.5mm) will go through the screen opening and together with the liquid. The recovered liquid fromVCD (vertical cuttings dryer)will be with a very high fine solids content. The mud weight is too heavy to be reused for drilling mud systems. Decanter centrifuge will be used afterVCD (vertical cuttings dryer)to remove fine solids and reduce the mud weight. After centrifuge, the liquid can go back to rig mud system for reuse.
- Details
-
Published: 02 March 2018
Screw conveyor system is widely used together with the vertical cuttings dryer system. The auger screw conveyer system can be used to feed cuttings to vertical cuttings dryer, and collection sands discharged from vertical cuttings dryer and then convey to cutting containers, trucks or other sand holding device.
GN Solids Control makes different sizes of screw conveyors to suits for different applications:
The auger diameter varies from 10 inch to 16 inch. There are 10 inch, 12 inch, 14 inch and 16 inch as standard size available from GN Solids Control.
Each size auger conveyor is with screw elements of length 12 ft for each section. The different sections of 12 ft. will be interchangeable. Transfer length can be 24 ft, 36 ft and 48 ft.
Screw conveyorsystem can be used together with other devices to suit for different applications.
Feeding type for Vertical cuttings dryer at rig site:
As the Vertical cuttings dryer is capable to treat the drilling cuttings discharged fromsolids control shale shaker, decander, desander or mud cleaner. It cannot be used to treat the soil discharged from decanter centrifuge. It is too fine to separate by theVG dryer screen basket.
In this case, at least 2 sets 36ft screw conveyer will be used in the rig side VG drying system:
Screw conveyor #1: It is in level to collect drill cuttings from solids control system
Screw conveyor #2: It should be inclined to collect cuttings transferred from #1 screw conveyor and convey to the VG dryer feeder hopper.
Screw conveyor to transfer drilling waste from waste pits or containers:
There should be a V-hopper on top of the screw conveyor to collection and buffer the drill cutting. And the screw conveyor is inclined to convey cuttings from the V-hopper to VG dryer.
However, the screw conveyor system is only suitable for the drilling cuttings with less liquid phase content. If the liquid content is high, screw conveyor cannot do. And it will cause leakage. Vacuum transfer pump will be used in case of the fluid content is high. It is a powerful 100% air driven pump suiting for a very wide range of applications.
- Details
-
Published: 22 February 2018
GNLW553C-VFD is a large bowl decanter centrifuge designed and made by the leading solids control manufacturer – GN Solids Control. The GNLW553C-VFD is a decanter centrifuge with 22 inch bowl size (＞21†diameter). The 22 inch large bowl decanter centrifuge GNLW553C-VFD is equipped with Variable Frequency Drive system for a variable bowl speed can conveyor speed to suit for different applications.
GN Solids Control can offer complete centrifuge separation system with the 22 inch large bowl decanter centrifuge GNLW553C-VFD. The complete centrifuge system will be capable of running in continuous operation and suitable for different separation and application:
1) The 22 inch large bowl decanter centrifuge package GNLW553C-VFD is capable for LGS (low gravity separation) reduction with a high bowl speed.
2) The 22 inch large bowl decanter centrifuge package GNLW553C-VFD can be used for barite recovery in oil drilling mud system with a lower bowl speed.
3) The 22 inch large bowl decanter centrifuge package GNLW553C-VFD can be used to separate all types of Water Based Mud and Non Aqueous Based Mud with various properties dependent per the drilling activities.
4) GN 22 inch large bowl decanter centrifuge can separate drilling mud densities range between 8.34 to 13 ppg, the unit shall also be capable of processing fluid densities up to 21 ppg.
5) GN 22 inch large bowl decanter centrifuge package is capable of processing up to 15 tons/hour, with of volumetric capacity of up to 500 gpm with water
6) GNLW553 large bowl centrifuge is capable for continuous rotation between 0 to 3000 rpm, creating max. G force up tp 2770 G. And the scroll differential speed for convey material is 0 to 45rpm.
Wearing protection of GN 22 inch large bowl decanter centrifuge GNLW553
1) Feed Zone Wear Protection: Tungsten Carbide Wear Liners (360° type)
2) Conveyor Wear Protection: All length Tungsten Carbide hard surface paint
3) Bowl Solids Discharge Protection: Tungsten Carbide Wear Liners, plus Tungsten Carbide scrapers cleaning
4) Bowl Wear Protection: Ribs on inner diameter
- Details
-
Published: 14 February 2018
GN Solids Control are leading manufacturer of complete centrifuge system which are capable of running in continuous operation and suitable for LGS (low gravity solids separation) reduction or barite recovery for drilling mud solids control system.
GN Solids Control makes different sizes decanter centrifuges. GN brand decanter centrifuges are suitable to treat all types of Water Based Mud, oil based mud, and other Non Aqueous Based Mud with various properties dependent on the drilling rig mud systems. The most popular size is the small bowl size 14inch GNLW363, and the big bowl models 18 inch GNLW453, and the 22 inch GNLW553.
GN 14inch decanter centrifuge, big bowl models 18 inch centrifuge and 22 inch centrifuge can be used to process drilling fluid densities range between 8.34 to 13 ppg. The drilling fluid densities can be treated by GN brand centrifuge unit is designed also be capable of processing fluid densities up to 21 ppg.
GN 14 inch decanter centrifuge is with speed range: 0 to 3500 rpm. GN 14inch decanter centrifuge maximum Bowl Speed is 3900rpm. The normal working speed range setup is 0 ~ 3200rpm. If client want more working speed range, you can contact with GN engineering team for customization. It is available up to 3500rpm.
Driving system of GN big bowl and small bowl centrifuge systems:
GN 14inch decanter centrifuge is the most popular model for mud solids control and waste management. It can be equipped with fixed speed control, Variable frequency drive control, and Independent full Hydraulic drive control system.
GN 18inch and 22inch decanter centrifuge is available with Variable Frequency Drive system at this moment.
Safety protection of GN big bowl and small bowl centrifuge systems:
1) All GN decanter Centrifuge systems are equipped with Soil blocking plate and end scraper for antiplugging Mechanism protection
2) All GN decanter Centrifuge systems is capable with over currency protection in the electrical control systems for over load protection.
3) Additional Safety Protection: Interlock for bowl drive and pump drive.
- Details
-
Published: 11 February 2018