Diamond Drilling

GN Solids Control sells many 9 inch small size decanter centrifuges to South America every year. A few days ago, some sets of Solids Liquid Separation Small Decanter Centrifuge for South America Client are ready for shipment.

9 inch is a small size decanter centrifuge used for solids and liquid separation. It is normally used in diamond drilling slurry separation system. The 9 inch Solids Liquid Separation decanter centrifuge is also popular used in mining industry waste water treatment system.

GN 9 inch Solids Liquid Separation Small Decanter Centrifuge is specially designed for small capacity, small footprint, and fine solids separation.

The Bowl material GN 9 inch Solids Liquid Separation Small Decanter Centrifuge is SS 304 by forging. Similar as popular size 14 inch decanter centrifuge, the Screw protection of GN 9 inch Solids Liquid Separation Small Decanter Centrifuge is with Tungsten Carbide Tiles for longer life time and for easier replacement.

Bowl solids discharge port of GN 9 inch Solids Liquid Separation Small Decanter Centrifuge is protected by Ceramic casing, solids blocking ring avoid solids building up. Bowl assembly supported by tighten belt for protection bearing during transportation.

 

Besides 9 inch Solids Liquid Separation Small Decanter Centrifuge, GN Solids Control is also capacity to make other solids liquid separation equipment, like other sizes decanter centrifuge. Shale shaker, mud cleaner, etc…

Besides centrifuges, shale shaker and mud cleaner, GN Solids Control makes full line drilling mud processing equipment, like mud agitator, centrifugal pump, vacuum degasser, mud gas separator, jet mud mixer, screw conveyor, slurry pump, solids sludge vacuum pump, screen vacuum unit, vertical cuttings dryer, high G dryer, dewatering system, solidification unit, etc…

GN Solids Control can also make full package drilling mud purification and recycling system to treat drilling mud and drilling cuttings from various drilling activities (oil and gas drilling, HDD, CBM, water well drilling, TBM, piling, micro tunneling).

This is the last working week before Chinese Lunar New Year holiday, after that offices and workshops will be closed for a 2-week holiday. All GN workers are working day and night in order to ship as more as orders before the 2-week holiday.

Some dewatering centrifuge units are dispatched to sea port, they will be exported to a Southeast Asia client. The dewatering centrifuge units will be used for TBM mud treatment. TBM is short for Tunnel Boring Machine, it has a wide application in railway, hydropower, transportation, mining, municipal and other tunnel projects.

Drilling mud is used to lubricate drilling bits during Tunnel and Boring drilling activities. For environment protection, the drilling mud and waste water must be recycled and reused during and after the drilling activities. Besides normal mud desanding plant, dewatering centrifuge unit is also requested in some application to treat the waste water.

GN dewatering centrifuge unit consists of big bowl big ratio decanter centrifuge, and chemical dosing unit. The decanter centrifuge and chemical dosing system is combined as a full package unit to remove as more ultrafine solids as it can do. The decanter centrifuge and chemical dosing system are both allocated inside a fabricated container. The full package can be shipped as a shipper owner container during international shipment. And the containerized design can protect the centrifuge and chemical dosing system, which values much. And they are easy for shipment between different jobsites.

Decanter centrifuge itself is a Physical separation machine. It can only separate solids by particle sizes. It cannot remove ultrafine solids smaller than the cut point. By chemical dosing, the ultrafine solids can be flocculated, and reach the centrifuge cut point for solids removal.

Besides dewater centrifuge unit, GN Solids Control makes full line desanding separation equipment for TBM and other trenchless no dig activities, like shale shaker, desander, desilter, etc…

GN Solids Control makes Mud Recycling System and desanding plants for construction Trenchless Engineering Companies, like for HDD (horizontal directional drilling), TBM (Tunnel Boring Machine), Microtunnelling, piling, etc…

GN Solids Control has more than 10 years of experience in the design and manufacture of mud recovery systems, especially in trenchless projects with multi-function and compact design to cater for different demands and applications from clients. According to the different requirements from users, and jobsite situations, GN Solid Control can provides different configurations of mud recovery system and desanding plant to meet the requirements of different working conditions. There are usually two types of mud purification systems suitable for trenchless construction: one is sand removal unit with cyclone purification system, we usually call it desanding plant. And the other type of design is self-contained mud recovery system.

The desanding plant with hydro cyclone purification system occupies a small footprint, and is economical and affordable. The system is composed of a hydrocyclone and a double deck shale shaker, both of which are installed on a small mud tank. The sand removal cyclone purification system is a two-stage separation device, and its function is to remove coarse particles from drilling mud. The desanding plant is mainly used in projects that can accept larger particle size solid drilling mud, such as Microtunnelling, piling, and so on.

The high standard self-contained mud recovery system developed by GN Solid Control is composed of four stage separations: shale shaker for coarse cuttings separation, 10 inch desander cone separation, 4 inch desilter cone separation, and decanter centrifuge for ultra-fine solid separation. The mud tank of the self-contained mud recovery system has a bigger storage volume to store the purified drilling mud. At the same time, it also has more tank surface space to arrange more separation equipment. Customer can also choose a centrifuge to reduce the ultra-fine solid in the drilling mud and to avoid the enrichment of the ultra-fine solid phase in the drilling mud.

GN Solid Control not only has a standard sizes of mud recycling system and desanding plant, but also provides custom-designed mud recovery system to meet for different demands.

In the just past MinExpo 2016 exhibition for especially for mining industry, GN showed the 9 inch decanter centrifuge there and many visitors came to GN booth showing great interesting to this unit.
9 inch is the smallest size model in GN’s decanter centrifuge production line. GNLW223 is the typical model number of this size, now both the fixed speed and VFD model available. At this time, all GN’s decanter centrifuge is electric driven; however, GN is researching the FHD model that is more preferred as less energy consumption.

gn-mining-centrifuge

GNLW223 Decanter Centrifuge – 9 inch

GN 9 inch decanter centrifuge unit can run normally at 3800 RPM for long time working condition, while the designed maximum RPM is 5000. GN’s dynamical balance testing instrument can test the decanter centrifuge at actual working speed, even the maximum designed RPM. This ensures the stable working performance.
GNLW223 series decanter centrifuge is mainly used for small capacity solids removal project. Diamond core drilling is a typical industry that will use this type decanter centrifuge. With a high working speed, the centrifuge unit would remove the ultra fine solids like less than 5 microns from the drilling fluids. Ceramic tiles are inlayed for protection of the screw propeller, which extends the working lifetime. For the customer who prefers the FHD model, GN also provides only the mechanical part like bowl assembly and bearing seat, customer could equip the hydraulic driving system and electric control system locally.
Some mining operators would ask put a shaker unit before the decanter centrifuge, thus the coarse solids could be removed firstly. Then the slurry with fine solids will be fed into the centrifuge. The function of the shaker is to remove most of the large size solids, which will greatly reduce the working load of the centrifuge. It is also a protection on the centrifuge unit.
Now GN already developed the compact solids removal unit including mini shaker and 9 inch decanter centrifuge. This system also has mixing system for adding bentonite into the fluids. Its compact structure make it could be helicoptered to lift to a remote area for working.

Diamond core drilling is a type of drilling used to get the stratum samples so that the geological experts could analyze what under the ground, and if there is mineral reserve, how deep need to be drilled for exploitation. Diamond core drilling always uses tube type drill bit for getting a cylinder earth sample. The drill hole is not too big to use plenty drilling mud. However, on consideration of environmental protection, the recycling of the
drilling mud is firmly requested, which is also a method of cost saving.

gn-solids-removal-unit (1)

GN Solids Removal Unit for Diamond Drilling

The drilling mud recycling system of the diamond core drilling can also be called as solids removal unit. As the drilling site of diamond core drilling is always space limited. The solids removal unit needs to be as compact as better. GN has 2 equipments that are made especially for diamond core drilling: Mini shaker and Mini centrifuge unit.
GN Mini shaker is 2-panel screen design with vibration G force up to 7.1 that is used to remove the coarse solids in the drilling fluids. Heat treatment on whole shake deck greatly strengthens the deck to ensure a better performance on drying the solids.
GN Mini centrifuge is 2-phase type for solids and liquid separation, 9 inch bowl diameter, with speed up to 3800RPM, the centrifuge could effectively remove the solids with size of 2 microns in the mud. Stainless steel material of the bowl guarantees the good working for all kinds of chemical liquid. The protection of tungsten carbide tiles on screw and ceramic casing at solids discharge port significantly extends the life time of the centrifuge.

gn-solids-removal-unit (2)

GN 9 Inch Centrifuge

The mini shaker and mini centrifuge could be ordered separately as well as included in GN’s solids removal unit. By fixing the shaker and centrifuge unit on a tank, GN could provide clients a very compact mini mud recycling system-SRU. GN SRU can also do the job for re-configuration the drilling mud. GN also has modular type solids removal unit which is transportable by helicopter to remote area.
GN solids removal unit could greatly decrease the solids content in drilling mud so that to make the drill bit down hole perform well. It could greatly reduce the consumption for water and drilling mud, which is a large saving and benefit for environment. GN now has brochure especially for solids removal unit, any interests, please feel free to contact with GN.

GN Solids Control deliveried the 9th range of containerized drilling waste management system with winterization to get Russian client and this is a third containerized drilling waste material management system for a identical client in Russia. Seeing that everybody knows, Russia drilling surgery always in very cold weather and want all equipment and mud tank to be working in winter. That’s why we construct many sets of drilling waste management system and also solids control equipment intended for winterization design.


Main Tools For Winterized Drilling Squander Management System
One set of containerized vertical cuttings dry remain inside of 40 feet gift basket, the vertical cuttings dryer can process drilling cuttings 30 – 50 loads per hour by 0. twenty five to 0. 5 millimeters mesh bracket. The revolving speed is 900RPM with drying efficiency make essential oil content bellow 5 pct. The oil tank capability is 48 liters, the oxygen knife installed to help stay away from screen block especially by means of water base drilling cuttings.
Three sets of mess conveyor installed, 2 units of the screw conveyor will likely be working to feed vertical cuttings dryer and the last a single for delivery the shop drilling cuttings after up and down cuttings dryer.


Two value packs of decanter centrifuge fitted, one set install VFD control panel for modify centrifuge speed from zero to 3200 RPM and also the other one is fixed velocity centrifuge on 3200 RPM. the 2 sets of decanter centrifuge installed on solids control mud tank and the centrifuge will be working to recycling going mud that out of straight cuttings dryer.
Three range of screw pump, one of them will likely be working for flushing dryer liquids outlet and the other two will be working for feeding decanter centrifuge.
All the above drilling waste management equipment place in a container and the burial container sit on the tank skid and the skid with a include installed for winterized design and style.

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In some mining projects, before the exploitation, the contractor would like to do some research on the geological condition. The most popular method is to use the core drilling machine to get some sample of the stratum. By analyzing the stratum sample, the mining operator would get some basic information like the mineral reserves and what kind of the mineral it is.

When getting the sample of the stratum, the contractors always apply to use the core drilling machine to get a series column shape stratum. The drilling bit is a type of pipe, not like the drilling project for oil and gas, the core drilling not need too much drilling fluids to cool down the drill pit and take the cuttings out from the drilling whole. However, in order to make sure the better performance of the drilling process, the drilling contractor always will get a solids removal unit to separate the drilling cuttings from the drilling fluids.

Now the solids removal package unit specially for core drilling designed and manufactured by GN Solids Control has already been applied on site and the performance was proved good.

GNLW223 Centrifuge

GN Centrifuge for Core Drilling

In GN’s solids removal package unit, the equipment involved is as below:

Shale shaker model of GNZS752 with 2 panel screens, which is used as the first stage solids removing unit to separate out the larger size solids in the drilling mud.

High speed decanter centrifuge GNLW223 which is also the key equipment in this solids removal unit. It could run at a typical speed of 3800 RMP that ensure a good performance for dewatering. The semi-dry solids discharged out from the centrifuge unit could be transported easily.

Considering the requirement of the small footprint, this solids removing unit is designed structure compact and the mud tank only has 2 compartments separately to be used for sand settling and mud mixing. The centrifuge pump used in this system could both transfer the mud to centrifuge and mud mixing. This dual function centrifugal pump saves great power cost and reduces the system size.

For the power supply, GN could also provide a diesel generator as an option.

GN Solids Control is welcoming the customer worldwide come to us for learn more about the core drilling solids removal unit.

GN solids control is the first one China based API certified manufacturer for drilling fluids processing decanter centrifuge. To meet customers’ requirement from different industries for different purpose, by now, GN has released a relative complete series centrifuges which have been proved good performance on site.

GN high speed centrifuge

GN High Speed Centrifuge on Site

This article is to give a brief introduction on how to choose GN’s decanter centrifuge according to different purpose. GN now has models of GNLW363 fixed speed and VFD, GNLW452 fixed speed and GNLW453 VFD, GNLW553 VFD.

1. For barite recovery, GN always recommends the model of GNLW452 with RPM 1800, designed maximum RPM is 2200. This is the lowest RPM model GN hold. GN also has the model GNLW363 with RPM 2200.
2. For general drilling mud solids control, the model of GNLW452 is proposed for high gravity solids separation. The customer could also choose the model of GNLW 363 with RPM 2700. If the customer has a cuttings dryer in the system, then GN firmly propose latter model.
3. For solids separation application to the low solids content drilling mud or the low gravity solids. It always is difficult to separate the solids thoroughly, then a centrifuge with high centrifugal force would be need. High speed centrifuge always has large centrifugal force could perform well for this application. GN always recommends the model of GNLW363 with RPM 3200.
4. For some of the mud recycling system, the operators always choose 2-centrifuge system for solids separation. One middle speed and then one high speed. For this application, GN’s solution is 1 unit GNLW452 with speed of 1800 and 1 unit GNLW363 with RPM 2700 or 3200.
5. GN could also provide centrifuge unit with several belt pulleys for different speed, the customer could adjust the RPM by changing the belt pulley.
The best solution for all this different working condition is to get a VFD model with different RPM in same unit centrifuge. GN could provide VFD model for 14”, 18” and 22” bowl with different capacity.

The above mentioned large size decanter centrifuge are all used for oil gas industry. GN also has a model of GNLW223 with capacity 6 cubic meters which is a very popular model for core drilling. This model is both fixed speed and variable speed available.
Any questions, you may contact with GN or send Email to us for more information.

GNLW223 Series decanter centrifuge is a main product of GN Solids Control, different from the centrifuge used in oil drilling and drilling cuttings management system. The GNLW223 centrifuge is more compact structure and has a relative small treating capacity which determines this series decanter centrifuge is always be used in diamond drilling mud recycling.

GNLW223 Decanter Centrifuge

GNLW223 Diamond Drilling Decanter Centrifuge

GN now could provide this GNLW223 centrifuge electric drive fixed speed GNLW223G and Variable Speed GNLW223-VFD.
Both of the two models are driven by one unit electric motor. Regarding the motor and control panel, GN could also provide IEC explosion proof standard which could be used in hazardous area. Some customer may prefer the fully hydraulic drive model, at this time, GN hydraulic driven centrifuge for GNLW223 still under research process. But GN could provide the Decanter Centrifuge without motor and control panel, the customer could get the hydraulic driven unit locally and assembly together with the mechanical part. The unit which was sent to Canada is like that.
GNLW223 series decanter centrifuge has a normal treating capacity of 6 cubic meters per hour. The designed maximum rotating speed is 4900RPM. If variable frequency drive, the speed would be 0~3800RPM. Under general condition, the solid particles size in diamond drilling is very fine, however, sometimes, there would be large size drilling cuttings. Thus, one unit shale shaker maybe needed as first stage cleaning equipment to remove the large size solid particles. GN has a mini model shale shaker GNZS752 is especially for this job.
The mud system for diamond drilling is very simple; always it is consisting of mini shale shaker, GNLW223 decanter centrifuge, and mud tank and mud agitators.
Diamond drilling is very popular in Canada, there are more than 50 diamond drilling company in Canada right now. GNLW223 series decanter centrifuge has already been used in Canada for diamond drilling and performance proved very good.