GN Decanter Centrifuge

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GN Solids Control has been providing decanter centrifuge for a long history. GN Solids Control has been delivered more than 200 sets decanter centrifuges to oil and gas customers. Besides decanter centrifuge, GN Solids Control also manufactures solids and liquid equipment like shale shaker, mud cleaner, cuttings dryer etc.
Every day, GN Solids Control receives some centrifuge inquiries from the world. Today we would like to share one project with you.
As we all know, GN Cleaning Centrifuge Package is used to process un-weighted and weighted, water-base and oil-based drilling fluids (muds). The centrifuge is usually fed by feeding pumps or submersible pumps. Decanter Centrifuge
Length not more than 3,0 meter.
Width not more than 1,8 meter.
Height not more than 1,5 meter.
Bowl diameter: 14” – 16”.
Bowl length: 48” – 50”.
Maximum Bowl Speed: 3600 rpm 4000 rpm
Maximum Processing Capacity: 175 gpm – 250 gpm
Drive type: Electric
Power: 480VAC, 60Hz
Maximum G-Force: 2800 – 3180
Main Drive Motor: 40 – 50 Horse Power.
Back Drive Motor: 20 – 25 Horse Power.
Feed Pump Drive Motor: 15 – 20 Horse Power.
This customer demands main components of GN Solids Control centrifuge consist of the stainless steel gearbox driven assembly, rotating assembly, fluid coupling, feed pump, electrical components such as control panels, control boxes, drive motors, vibration switches, temperature sensors, carbon steel guards, stainless steel cases, abricated carbon steel base assembly and DNV oilfield skid with lifting points for transporting. 2-years spare parts should be provided with the package in order to ensure uninterruptable operations for the centrifuge package.
While for the rotating assembly it should consist of a cylindrical bowl (bowl and heads forged of stainless steel to provide corrosion resistance for long life, smooth operation and low maintenance) and conveyor assembly as well as related components. GN centrifuge rotating bowl ends are supported by greased genuine SKF ball bearings.

GN Poor Boy Degasser and Cuttings Boxes Delivered to Sinopec

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GN Solids Control is a leading solids control and waste management equipment provider; customers are widely spread in more than 72 countries and regions. GN Solids Control has 2 manufacturing plants in China, now the global market is around 70% and the domestic market is around 30%.

Almost all the large oil and gas service providers and drilling rigs contractors are using GN Solids Control products in thousands of drilling rig sites. GN Solids Control has a very close relationship with most of the companies working on solids control and waste management area.
GN Solids Control has provided hundreds of shakers, decenter centrifuges and cuttings dryers to China oil companies. Just several weeks before, GN Solids Control delivered some poor boy degassers and cuttings boxes to Sinopec.
As we all know, Sinopec is one the largest oil companies in China, GN Solids Control has been providing solids control and waste management equipment for many years.
GN poor boy degasser is mainly used to eliminate large bubbles in the drilling fluid. GN poor boy degasser is composed by a large cylinder, one metal plate is fixed on top of the inner cylinder. Drilling fluid is hit on the baffle plate firmly so the large bubbles will run from the top of the cylinder. GN Solids Control also manufactures vacuum degasser and centrifugal degasser to eliminate finer bubbles. Centrifugal degasser takes narrow room which can be used various drilling rigs solids control systems.
Beside the poor boy degasser, GN Solids Control also provides some sets of cuttings boxes to Sinopec. GN Cuttings Boxes are mainly used to collect those drilling waste discharged from shaker, desander, desilter, decanter centrifuge and cuttings dryer. Level monitor is fixed on each cuttings box. In order to watch the leakage, some leaking devices are also fixed in the cutting box.

GN Oil Slurry Treating System

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GN Solids Control has provided thousands of turn-key solutions to global customers. GN various separation treating equipment are widely used in solids and liquid separation, such as oil slurry treating, refinery plant slurry treating, oil tank bottom slurry treating.
This year, GN Solids Control has provided some sets oil slurry treating systems in Uganda, Kuwait, Canada and Qatar etc. GN Solids Control Oil Slurry treating systems are especially designed to treat high density and viscosity oil slurry: oil, water and solids can be separated out.
Solids discharged from GN oil slurry treating system only contains 1~2% oil; recovered oil only has less than 0.5% solids, while the recovered water is also less than 0.5% oil (by using gravity oil & water separator). If customer has higher demand on the recovered water, we also provide micro bubble oil & water separator.
GN Oil Slurry Treating System mainly includes the following treating components:
1. Pre-Mixing Tank
GN pre-mixing tank is used dilute the oil slurry by adding water and chemicals. Heating pipe around the tank is assembled in order to increase the liquidity. GN Solids also provides vacuum pump which can suck high density slurry from a mud pit within 10 m.
2. GN Coarse Shaker
GN coarse shaker is the first phase treating equipment, large solids are removed by choosing different size shaker screens, and sometimes opening mesh screens in stainless steel are also used. Here GN coarse shaker is covered with metal plate in order to keep the slurry from splashing. Flushing outlets also fixed on the shaker so screens don’t need to be disassembled for cleaning.
3. GN Decanter Centrifuge
Based on the treating volume, GN Solids provides 14inch centrifuge, 18inch centrifuge or 22inch centrifuge to treat different drilling slurry. 2 sets centrifuges may be used so solids can be removed twice.
4. GN 3 phase Separator
5. GN Flocculation Unit

GN Solids Will Attend ADIPEC 2017

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As one of the largest oil and gas show, ADIPEC draws attention to thousands of oil and gas professionals. APIPEC is short for Abu Dhabi International Petroleum Exhibition & Conference. Every year, many newly developed oil and gas equipment are exhibited in this show and new technology are shared by many experienced experts. The 2017 ADIPEC will be held from Nov.13th to 16th. This might be the largest oil and gas show besides USA OTC show in Middle East.
GN Solids Control will attend ADIPEC show, GN Solids booth no. is 10250 in Hall 10. GN Solids Control welcomes all GN friends to visit us, please feel from to connect with us if you would like to check our solids control and waste management equipment.
This year, GN Solids Control will exhibit some shaker screen in the ADIPEC show. Although the oil price is still pretty low, but GN Solids Control receives more inquires on shaker screens and selling more shaker screens. With the establishment of GN Solids America LLC and GN Solids Russia, more and more GN shaker screens and solids control equipment are purchased.

GN Solids Control will exhibit many different kinds of shaker screens, such as replacement King Cobra shaker screens, replace Venom shaker screens, replace Derrick shaker screens, replace Mongoose shaker screens and replace FSI shaker screens. Now GN Solids Control mainly manufactures composite frame shaker screens. Composite frame shaker screen frame is also metal frame, while the outside is covered with Composite Frame. GN Composite Frame screens are using 3 layers for screen API no. above API 60, while most of the shaker screen manufactures are using 3 layers for screens above API 120.
GN Solids Control only used top brand wire cloth to manufacture shaker screens. Feel free to check our shaker screens in thee 2017 ADIPEC. If you are located in USA, welcome to visit our Houston warehouse in Houston, TX.

GN Decanter Centrifuge Maintenance

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GN Solids Control manufactures 9 inch, 14inch, 18inch and 20 inch decanter centrifuges. GN centrifuges are widely used for various solids and liquid separation areas, for example, industrial water, oil and gas drill cuttings, soil remediation, construction slurry etc.
All the workers must know how to operate centrifuge as different working parameters need to be adjusted which obviously affect the separating result. And know how to do some maintenance is also pretty important, here are 2 cases for reference:
1. The main motor belt alignment is not good. There is minor offset between the pulley on the gearbox and motor pulley. The motor pulley contacts the belt guard, because it is offset. Do you have any suggestion as to how we can fix this alignment?
Offset is a problem that we cannot ignore, as belt alignment will cause issues with the bearings or belts. This might happen when the centrifuge transported by long time transport without proper secure, but it’s very easy to adjust. Please check the following drawing for the motor position. Loose the 4 bolts (in red circle) under the main motor, and adjust the 2 bolts (in red rectangular) to adjust the position of the motor so you will have a better alignment.
2. We are having trouble locating a local supplier of SKF LGHP 2 grease for GN decanter centrifuge. Are there any other types of grease that are permitted to be used for the main bearings? Also, it seems like the greasing quantity is very high; about 270 grams for each bearing every 8 hours. The manual says that the grease amount should be 2/3 of the tank. Does this mean 2/3 of a 400 ml grease cartridge?
Some other grease can be used as long as they are suit for high speed working condition. Please DO make sure to use famous brands grease as the bearings are key components of the centrifuge.
Due to the high rotating speed of the bearing, the grease will lose a little every day, regularly lubricating helps to protect the SKF bearings. But I don’t think there is a large needing volume of the grease, only 25g and 86g for the small end and large end bearings, which is 111g for 2 bearings in every 8 hours. The reason amount is 1/3, which is also filled by our engineer when leave factory, you just need to add a little bit every day.

GN Solids Control Mud Agitator

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GN Solids Control manufactures various solids control and waste treating equipment, basically GN product line cover all the equipment in the oil and gas industry. Every year, GN Solids Control receives many inquiries on mud agitators, here is one inquiry we would like to share with you:

1 Project description：Purchase mud agitator for Rig NH9 to mud system.
2 Amount: mud agitator with electrical motor：5 SETs.
3 Installation for use position and application：mud pit.
4 Main Technical Parameter：
1) Need add more one mud agitator to 1、2、3、4、5# mud pit. Fluid Medium: Mud
2) Every mud pit size and height:
3) Volume of every pit

Mud Agitator Exploded View
4) According to the operation state of mud and mud pit size, the contractor needs to calculate the power of mud agitator and the motor to meet the aforementioned requirements, and it should meet requirements to prevent mud deposition, the contractor need to provide the agitator detail calculation report that meet the actual operation to rig before purchasing agitators.
The Electric Motor:：AC460V, 60Hz; 3ph, 1800RPM, enclosure: FCXP, Severe IP55 Protection. Motors are squirrel caged with class ‘F’ insulation.
Classification: NEC/UL Class I Div I Gr C&D.
Low shear, High Pumping, Axial flow Impellers.
Gearbox: AGMA Quality 11 (ISO Grade 6). Lubricate: Oil.
Gearbox rpm: 45, clockwise rotation w/shaft and impellers in CS material and resist the corrosion of mud. Bearing life more than 200,000 hours.
Gear box: c/w splash lube system. Designed for fluid: ≥SG2.40 and Viscosity: 400cP.
Bending Moment: 8408 ftlb; Reaction Torque: 4155 ftlb; Weight: 1766.7lb
5) Environment Conditions: Apply to the high temperature mud environment
(0-80’C, CLASS 1,ZONE1.GROUP C,D.
6) Related Accessories Configuration: N/A.
7) Other Requirement: One year guarantee period.
8) Requirements for Interface Connected: According to product standard.
9) Requirements of standard and Specifications: API RP 13C Recommended
Practice On Drilling Fluids Processing Systems Evaluation(current edition).
10) Appearance and Color Requirements: N/A
11) Documental Material Requirement: Equipment operation and maintenance manuals, Parts list. One original and four hard copies, two electronic editions.
12) Certificate and Reporting Requirements:
Impeller Material’s Certificate, 1set.
Mud agitator OEM’S certificate, 1set.

GN Solids Control Products for Global Customer

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Every year, GN Solids Control manufactures thousands of solids control equipment and waste management systems for global customers. GN Solids Control has many professional engineers who have been working on solids control and waste management equipment for a long period. Most of GN products are using in oil and gas area, industrial slurry treating area and some other solids and liquid separation areas.
Although the oil price is pretty low, GN Solids Control receives many inquiries on various solids control equipment, here is one prospect we received last year.

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We have a government tender for next month and I would like to know if you can quote the following mini mud system, this will be used for water wells, but they already have the well drills.
Mini mud system:
_ At least 450 GPM
_ Solid up to 17.5 ”
_ Depth of 150 meters
1. Centrifugal pump
_ Variable speed 0-3000 RPM
_ Capacity of at least 0-500 GPM
_ 4 ” hose
2. System screening
_ Capacity 450 GPM
_ To screen 0149 particles millimeters (ASTM E11-61)
_ With hydraulic motor and speed control.
3. Mud Tank
_ 2800 liters.
_ With high strength metal of at least 3/16 ”
_ Separate panels and sand traps
4. Mud Pump
_ At least 250 GPM
5. Sand cleaning system
_ Screen of 0.15 micrometres
6. bentonite dispenser
_ hopper for 25 Kilograms.
_ Manual
7. Mechanical system
_ Diesel Motor
_ At least 74 Hp @ 2800 rpm
_ Fuel tank 25 gallons (20 hours)
_ Doors locked
8. Control Panel
_ Description lights, indicators
9. Hydraulic system
– Description
10. Trailer
_ electric brakes
_ hydraulic jack
_ spare tire
_ levelers
_ Total weight
11. Hose quick coupling 4 ”
GN Solids Control engineer provides all the above equipment, some of them are also stocking in Houston warehouse.

GN Solids Control Decanter Centrifuge

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GN Solids Control has been working on manufacturing decanter centrifuges for many years. With the fast development, more and more customers are willing to choose GN decanter centrifuges, now GN Solids Control customers are widely in more than 70 countries.
Every year, GN Solids Control manufactures more than 300 sets decanter centrifuges. As decanter centrifuges are popular treating equipment which can be used in various solids and liquid separation area, now GN Solids Control decanter centrifuges are working in oil and gas drilling slurry separation, mining slurry treating, HDD slurry treating, diamond drilling slurry treating etc.
Every year, we receive hundreds of inquiries on decanter centrifuges. Here is one example we would like to share with you (sent by one prospect):

201703241131
We specialize in supplying waste water treatment equipment in water and waste water treatment
Can you quote Decanter machine as below?
Capacity (max.): Capacity: 100 – 120m3/hr; 1000 – 2000 kg DS/hr
Bio-sludge, concentration 2% (bio sludge in thickener basin in Municipal waste water treatment system)
Type of waste water: Municipal WWTP
This project, customer would like to use new decanter to replace old one (Japanese product).
Our competitor is Alfa Laval, main driving: 160kw 3 phase x380Vx50Hz, and sub motor: 37kW including variable frequency each motor.
Some specification for detail below:
1/ Dry sludge: ≥ 28%.
2/ Screw: 1.4408 or AISI 316Ti
3/ Drum: SS Duplex or 1.4463
4/ Variable frequency for each drive
5/ supervisor instrument control vibration, bearing etc.
6/ Control panel with HMI (Siemens S7)

GN Solids usually don’t provide 3 phase treating decanter centrifuge as the working efficiency is pretty slow. And the price of GN decanter centrifuge is almost 3 times of one 2 phase centrifuge. Actually, most customers will still need one 2 phase coarse centrifuge in the front. So there we recommend our customer to use 2 sets GNLW553-VFD (22inch rotating bowl): coarse centrifuge and polish centrifuge. Just need to add another oil and water separator. So the whole treating system is more cost-effective.

GN Decanter Centrifuge and GN Cuttings Dryer

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GN Solids Control has manufactured thousands of solids control equipment include decanter centrifuges. Now GN customers from over seventy countries are using GN centrifuges.
Today we looked through those former inquires we got from our customers, they are still pretty valuable to share with you. Here is one example:
1)For the GNLW363CG centrifuge, please have the 3 pulley system installed. Please let me know the rotational speed for high, medium and low when you can. I have the gear ratio recorded. We will take the centrifuges with the standard motors and control panels if they meet spec. item 2 to follow.

Recommend you to choose Speed: 1800/2500/3200 RPM.
2) For any motors we do order, 60Hz, USA standard voltages, ICE-Ex (d)(e)(i)(nA) .
We can use motors with 460V/60HZ and to meet IEC Ex and Explosion proof Mark is Exd IIB T4 which meets the oil gas industry for international standard. Please comment if it is acceptable by you? We can even have the UL Ex Motors, but for Control Panel if you need UL we’ll have to source from US or Canada.
Here are several questions and answers on cuttings dryer:
Air Knife design will need to be determined later. Please send us some photos and descriptions, we can put it in our Dryer. Some other customers also have given us some concepts.
1) Can you supply JUST the motor conforming to 60Hz, USA voltage, ICE-Ex (d)(e)(i)(nA) capable of variable speeds WITHOUT the electronic drive and control system for the GNCD930 and still meet customer’s delivery schedule?
It will be 60 Days for GNCD900 to be ready for shipment. While right now, GN Solids have the cuttings dryers stocking in Houston warehouse.
2) Can you supply motors conforming to 60Hz, USA voltages, ICE-Ex (d)(e)(i)(nA) capable of variable speeds WITHOUT the electronic drive and control system to the GNG30-75 and still meet delivery schedule? It will be 45 Days for manufacturing.

GN Trailer Mounted Dredge Dewatering System

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GN Solids Control has been provided many dredge dewatering systems for global customers. Based on the move methods, GN dredge dewatering system is classified into the following 2 types: skid mounted treating system and trailer mounted treating system.
Just take example of one trailer mounted treating system provided to customer, the following shows questions that customers are interested:

1. Total power requirement at most likely and max load for determining power generator requirements.
GN Solids provides ‘GN Equipment Power List’. All the listed components are controlled by GN control boxes. You might need to prepare a distribution center and connect them to GN control boxes.
2. System dead load and axel load (ESAL).
’35ton 2axle LOW BED’, whole dead load can hold up to 35T, axel load is 21T.
3. Is it possible to get the transporting height of each trailer below 14 ft so we wouldn’t require to permit the transport of this system in Texas?
We can decrease the height below 14ft. As there is no separated compartment, so there’s no pump cavitation. #1 tank and #2 tank they are connected by overflow, as long as the #2 tank liquid discharged port higher than centrifugal pump inlet port, there will be no cavitation as long as #2 tank has fluid inside.
4. Does GN have any clients that use conveyor systems to move the dredge material away from the trailers, or do they just use bucket loaders to move it on the fly?
It depends, some of GN customers using screw conveyors while some of them use bucket loaders. Screw conveyor can be used to transport to a truck directly, while the bucket loaders can be replaced with another one and also move easily.
5. Max pump pressure and pressure system weak points.
Max pressure 0.5Mpa, there’s no pressure weak points as the whole system pressure is less than 1.0Mpa, actually they are not pressure pipe system.
6. Details on pressure safety system such as pop-off valves and other PSVs.
This system has on and off valves, centrifugal pump inlet and mud cleaner inlet both controlled by valves. There’re no pressure control components inside as this is not a pressure system.