Desander Desilter

The drilling fluid filtering systemis function like human heart that provides zero-discharge oh drilling fluid.  Such system is a big ticket items and there are some facts need to consider before make purchase.

1) Type of drill you will be using
2) The drill rate
3) The type of solids
4) The length of your bore
5) The GPM (gallon per minute) of the pump
6) The mud tank volume that will need
7) The number of Hydrocyclones
8) The screen size and API number

These factors determine your usefor drilling fluid filtering system that is adequate enough to clean the mud and protect the components and the drill bit of the rig, pumps and mud cleaners.

Gallons per Minute: When deciding the size of a drilling fluid filtering system that you will need, it is best to double the amount your GPM Need.   For example: If you are pumping 250 gals, you would want consider with a 500-gpm unit.

Trailer or Skid mount: Depending on your requirements, drilling fluid filtering systems can be either trailer mounted or skid mounted. Trailer-mounted units require dedicated trailer (built to unit). Skid-mounted unit can be removed from trailer which releases the trailer for other jobs requirements.

Screen surface: larger screen surface area you have means more volume of drilling fluid that can be process and clean.

Screen selection: The mesh size (API #) of screens is measured by the number of opening per square inch on the screen. Various mesh sizes control the size of the debris that can be removing. The same mesh size will not work in every drilling condition. Sizes will vary depending on the size of the debris and the type of formations you are cleaning.

Shakers: There are three different kinds of shakers (orbital, elliptical and linear). Orbital is a circular motion and elliptical isn’t perfectly circular — it’s an ellipse or oval. Linear has vibration that is induced by a pair of eccentric (or eccentrically weighted) shafts turning in opposite directions. This type of arrangement allows for the development of straight line or linear motion that can also be produced in a positive (uphill) incline.
While each shaker has a specific place that it will stand-out from other choices such as unit selling price, the ability to process heavy clays and rock or fines and ultra-fines, our overall preference of choice is the linear.

Hydrocyclones: Depending on the size of the mud system you choose, the cone size will either be 4 or 10 in. Each size cone has a micron cut point, which is the size of the smallest particle that the cone can pull out. The 4 inch cones have a micron cut of 20 microns and the 10 inch. Have a 74 micron cut.

Decanter Centrifuge: build purpose to filter solids between 2-5 micron and main purpose to recover barite for re-use as additive back into the drilling fluid.  It operates in G centrifugal force that control in fixed or changeable RPM of rotate bowl to achieve separation.

Related Arciels:

• Diamond Drilling Mud System Introduction on Drilling Site
• Dewatering Technology for Mine tailings, Mine waste water
• GN Centrifugal Pump to Deliver Drilling Fluids
• GN High Capacity Mud Conditioner Stock Available for Urgent Request

Shale shaker is the first stage machine to clean drilling fluids out from wells, indispensible both in a solids control system for oil and gas and mud system for other kinds of drilling. Driven by dual motors, GN shale shaker is liner motion with adjustable G force max to 7.5 G. After treated by the shale shaker, the drilling fluids will be further treated by desander, desilter, mud cleaner, decanter centrifuge to keep it clean enough for recycling usage.

Normally, a shale shaker contains below main parts:

The vibrator motors are attached directly to the screen frame and positioned over the screening bed to maximize the G-forces transferred to the screen surfaces. Float mounts isolate the vibratory motion of the screen frame from the support structure. Screens are fixed on the screen bed by wedges ,which is much easier to operate and improve work efficiency. The adjustable while drilling (AWD) mechanism is achieved by one electric motor that allows adjustment of the screen bed angle between -1°and +5°(The two-panel shaker deck angel is fixed at +2° ).This combination of features maximizes the fluid-handling and solids-removal capabilities of the machine.

 

The drilling fluids from mud return line of the drilling rig feed into the buffer box, then over flow to the shaker deck and shaker screen. The shaker motor motivate the fluids flow from one side to the other side of the shaker. While moving ,the fluids will down the screen to the collection box and the cuttings are discharged at the other end of the shaker. What’s more, the desander cones, desilter cones, or both of them can be added into the shale shaker installed on a frame fixed over the shale shaker. According to the quantity of cones, different models of shale shaker will be selected as underflow shaker.

Related Arciels:

• A New ERA of GN, after OTC 2015
• Drilling Fluids Recycling Equipment on Drilling Site
• 20ft containerized flocculent units training course
• The 5 steps purify drilling mud
• GN Solids America and GN Solids Control Succeeded in OTC2015

Centrifugal pumps are also called sand pumps. They are used as a very important devise for transporting drilling mud from one place to another. In oil and gas drilling industry, sand pumps are used for feeding the desanders and desilters, and also used for jet mud mixing system for feeding the hopper drilling mud.

Depends on the requested capacity, the sand pumps are designed in different capacities for different applications. Normally, in a same solids control system, the centrifugal pump for feeding desander and desilter are of same model. Like GN’s model, in the model code, you could find the main specifications of inlet, outlet and impeller.

In the standard layout, the first equipment is shale shaker, and the second is degasser. The degasser is used to delete the gas bubbles in the drilling mud, therefore, it also helps to improve the efficiency of the centrifugal pumps and protect them as well. After the solids control centrifuge, comes the jet mud mixer system. The centrifugal pumps are also used as mixing pumps for mixing hoppers.

A good centrifugal pump with a long service life is decided by several factors: the reasonable design and the good material. GN Solids Control is China leading manufacturer of solids control and waste management systems and equipments, together with GN systems, GNSB series centrifugal pumps were sold to more than 60 countries and regions in the world. And for GNSB centrifugal pumps, they are using stainless steel mechanical seals for a longer service life.

Besides centrifugal pumps, GN also has submersible slurry pump, screw pump, shear pump and etc available. Those pumps are used for feeding the solids control equipments in a system, like the centrifuges, shearing jet mixer, or to transport mud from mud pit in cases of HDD or CBM or Piling. In a word, GN could provide high quality turn-key solution for solids control and waste management systems for the end users.

 

Related Arciels:

• The need-to-know of shale shaker
• Hydroclone For Desander
• GN Presentation
• Oil based drilling waste harmless treatment & safety disposal — Add chemical

Among all the solids control and waste management equipment used for oil and gas drilling, the centrifuge is of the most difficult one to produce because of the preciseness and the performance. As the solids control manufacturer who ranks in the first place second to none in China, GN Solids Control is very specialized in the centrifuges, especially the 14 inch bowl decanting centrifuge.

This 14 inch bowl decanting centrifuge is a popular size centrifuge all over the world for applications in oil and gas industry. For this same size, GN provide 4 models, GNLW363CG, and GNLW363CG-VFD premium configurations and, GNLW363CD and GNLW363CG-VFD as economic configurations.

For Premium configurations: the premium configuration of decanter centrifuge GNLW363CG, they use better and stronger material for bowl, as SS2205 stainless steel made by centrifugal force. And the impeller protection tiles are made of special material which is both anti-corrosion and strong, which is called the ceramic in steel while steel in ceramic, a combination of the advantages of ceramic and steel. SKF bearings, for longer service life and better performance…and etc.

 

For both premium and economic configurations, GN has VFD control panel available, enable the rotation speed to be possible from 0 to 3200RPM. GN Solids Control is the first solids control manufacturer who can make the positive pressurized VFD control panel, and this method is the most popular in the world for time being and safer than flame proof solution especially in high temperature conditions.

 

GNLW363CG Premium Configuration is commonly used in Middle East, in the next month, in an Oil Exhibition held in May in Tehran, GN will show one set of newest design decanter centrifuge for Persian Gulf customers. May you have interest, pls feel free to contact us at our website or visit our factory near to Beijing Airport.

Related Arciels:

• GN Solids America LLC on 2015 OTC Show with Its Headquarter in China
• GN 1000pcs Shaker Screen for Middle East drilling company
• GN Solids Control dispatching equipment to overseas market
• GN Drilling Cuttings Management System Utilization for Offshore Project

The purpose of vertical cutting dryer is help oil rig to meet and excess the current and upcoming environmental regulation and control the operation cost effectively.  Separate the solids contents in the drilling fluid will maximum the life use of drilling fluid yet the solids remove drilling fluid need to be properly process so it will not contaminate the earth soil by removing moisture as much as possible.  The vertical cutting dryer working concept is similar like garment washer in high speed spinning mode.  The inside of the vertical cutting dryer contain the screens to filter the solids.  Yet in continues high speed spinning usage, the screen often get clogged and need to stop during the process.  To encounter this issue, GN Solids Control’s vertical cutting dryer feather air knife inside the dryer to prevent clogging the screen.

Air knife is a high compress air system blow off liquid and debris wile object that need to be process in continuous moving motion.  The “knife” produce uniform sheet of laminar airflow pressurized air containing a series of holes or continuous slots through which pressurized air exits in a laminar flow pattern.  This impact of air can be from mist breeze to high velocity without making contact with object.

Air knives remove liquids, control the dense of liquids, dry the liquid covering, remove solids particles, cooling the surfaces or create a press force to assist in the mechanical bonding of materials to the surface. Electrical currents from anti-static bars can also be injected into the exit air knife stream to eliminate the static electricity charge on some surfaces.

The most common use of air knives is to contain or remove flowing materials (liquids or solids) from the surface of material. The applications include drying solids to prevent solids stick on the screen.   They can also different temperature air to a surface, or create an invisible air barrier to separate heated or cooled environments.

GN Solids control can provide you high quality vertical cuttings dryer and best after sale service.

GN Solids Control is the first private company who develop vertical cuttings dryer, to compete with USA/ Europe verti-G dryer brand. Like Swaco verti-G dryer, CSI verti-G dryer and NOV brandt Vertical cuttings dryer. After 3 to 5 years, GN Solids Control have upgrade the vertical cuttings dryer to 4th generation dryer with better performance and different model size for different projects requirements.

GNCD930D Vertical cuttings dryer is the GN 4th generation vertical cuttings dryer with 20-30tons/h treating capacity, 900mm in diameter. The different jobsite see below:

 

Video: GN vertical cuttings dryer with GN premium centrifuge in Cyprus.

This customer is from Cyprus who just start the business to treat the oil drilling sludge from offshore platform. The oil drilling sludge is a mixing of crude oil, drilling cuttings / drilling waste from shale shaker, desander desilter etc. The customer use screw conveyor from GN solids control to transfer the oil sludge to vertical cuttings dryer and then go to centrifuge, the working performance really make the customer happy. After they use GN solids control equipment, this customer come to China to check about the factory and office of GN, which close to Beijing International airport. After check GN factory, the customer are considering to buy more centrifuge & vertical cuttings dryer for their own use and resell it in local market.

 

Video: GN drilling waste management system for Shell in Sichuan, China

Shell is very critical about the equipment quality and commissioning time at jobsite. Before Shell use GN vertical cuttings dryer, Shell already tried other brand vertical cuttings dryer, including CSI dryer and also other China brand vertical cuttings dryer, the performance is not that satisfactory. Then, Shell buy one set vertical cuttings dryer and one set centrifuge from GN Solids Control and arrange GN people to do the commissioning. GN engineer only takes one day and one night, the solids control equipment can working well at the jobsite. The working performance, the dryness of cuttings (OOC = oil on cuttings) is below to 2.9%. These results really make Shell happy. Now, we are talking about more business with Shell, and they are trying to buy more centrifuge and vertical cuttings dryer this year.

 

At the beginning of this year, GN develop the 1200rpm high speed dryer with better performance. If you are in need of this equipment, pls contact us freely.

 

Related Arciels:

• The Decanter Centrifuge Principle and Theory in Operation
• GN Solids Control equipment continuing hot in Hard Circumstances
• Big Bowl Decanter Centrifuge Used for HDD Mud Recycling System
• Mud gas separator in solids control

With a fast and stable development, GN solids control has built up a modern and advanced manufacturing facility with headquarter building. GN highlights are describes as below.

GN solids control is the first API certified manufacturer of solids control equipment in China, also certified by ISO9001:2008, European DNV CE, Russia TR&TC, HSE; ATEX certificated or IEX EX certificate for electric control panel are optional in GN Solids control. GN Solids America LLC is the first USA based solids control company from China, and has developed partner in Australia, the Middle East, the Latin America, already exported to over sixty countries.

GN owns a 65000 square meters advanced facility, including warehouse, workshop 1 for raw material’s process; workshop 2 for assembly, workshop 3 for decanter centrifuges and vertical cutting dryers’ manufacture, and workshop 4 for painting. CNC machines are adopted in decanter centrifuges and vertical cutting dryers’ manufacturing workshop to control the quality with higher accuracy and productivity. Balance testing machine is used for rotating parts of decanter centrifuges and vertical cutting dryers to ensure safety and stability of GN product. In the painting machine, GN adopts auto powder coating line, drying and heat-treating machine, and also ball blasting machine to ensure the quality of painting. A wide yard in GN is to test solids control systems for oil and gas drilling, mud system for other kinds of drilling with water. Now a new factory is near to be finished, and ready for operation in the middle of 2015. Meanwhile, GN owns a specialized facility to manufacture screens in Asia’s largest mesh&wire city, supplying screens not only for GN shale shaker, but also replaceable screens for famous brand shale shakers such as MI-Swaco Mongoose, King Cobra shale shaker and so on.

The correct installation and use of hydrocyclone mud cleaner can filter unwanted solids from the mud to achieve controlled velocity.  It is important to use mud cleaner properly to ensure the quality of treated drilling mud.

1. The correct position of hydrocyclone mud cleaner for whole mud system is behind shale shaker which filter large solids at first step.
2. The drilling mud prior enter the hydrocyclone must be processed through shale shaker first.
3. Check the power source and once motor is start, check direction of rotation of the motor rotate in correct direction.
4. Seeking unusual noise from motors after turn on the machine
5. Secure the screen and hand feel the strength of the screen.  Initiate the test-run fluid and check if screens are intact.  Check every moving parts while machine is on
6. Clean the screen by end of each shift to prevent blockage of mesh and extend the usage life of screen
7. Stop the feeding of mud should turn off the pump first and keep on the shale shaker for another few minute and wash the screen, then shut down the shale shaker
8. Re-grease the bearing as needed for proper moving on machine parts
9. When the feed liquid pressure equal to the rated pressure, turn off the valve on the overflow tube, make the tubular value of the overflow pipe is 0.01-0.03mpa. When the feed pressure below the rated pressure, adjust the valve on the over-flow, make the tubular value of the overflow pipe is .0.02-0.05mpa.
10. For every 500 operation hours, the machines need regulator maintenances by checking moving parts and replace parts as necessary.
11. For every 4000 operation hours, the machine needs overhaul by doing maintenance list above and replace the hydrocyclone and check that insulation of electrical parts of the machine.

 

Related Arciels:

• Why now have big discount, is it in good condition?
• 1000HP Drilling Rig Mud System for Russia
• GN Vertical Cuttings Dryers and Decanter Centrifuges Working for SINOPEC Soon
• The operation of decanter centrifuge

GN Solids Control built one set GNLW454G decanter centrifuge for sale with great discount more than 30% to promote sales . This is a high speed long bowl decanter centrifuge for separate fine drilling solids at 2500 RPM with capacity 264 GPM .

 

Main Specification Of GNLW454G Decanter Centrifuge That For Sale

 

1. The bowl diameter is 450 mm ( inch ) , bowl length is 1720 mm ( mm ) , the bowl speed is 2200 or 2500 RPM .
2. The max capacity of GNLW454G decanter centrifuge : 264 GPM , main motor : 45 KW , Back Drive motor : 15KW .
3. The bowl length and diameter ratio is 4 to keep a better performance .
4. Bowl made by stainless material SS304 .
5. Centrifuge screw weld ceramic tile support , the ceramic tiles bolted on tile support to make it replacable .
6. There are ceramic protection point at solids discharge outlet to protect centrifuge bowl from wearing .

 

Applications of GNLW454G Decanter Centrifuge That For Sale

 

As the mud flow max 267 GPM , GNLW454G decanter centrifuge can be working on solids control system for fine solids separation after desilter separation . This is the most important application and earliest use for decanter centrifuge . Drilling waste management getting more and more important for environment protection , the GNLW454G decanter centrifuge can be used for drilling cuttings process to recycling drilling fluids dryed by vertical cuttings dryer or Hi G dryer . Other than oil and gas drilling , it can be used for coal gas methan drilling , horizontal directional drilling and other drilling application .

 

Other than decanter centrifuge , GN Solids build a complete line solids control equipment and drilling cuttings process equipment , pls contact GN Solids form more information .

Desanding plant also called desanding unit. It is more and more widely used for pipe construction, micro tunneling, water well drilling, HDD, CBM, or other kind of trenchless projects. As more and more government increase the standard for discharge, drilled mud cannot be discharged directly as previous. Recovery system like desanding unit is as a necessary request of the trenchless machine and rigs.

 

There are many customers they do not use the desanding plant before, and do not have much understanding on the application and function of the desanding system. Blow is the normal question they will ask.

 

Question 1: What is the function of the desanding unit mud system? What we can get from the system?

The desanding unit is used to recovery clean mud from the drilled mud. There are big quantity clean mud in the drilling mud came out from well head. The desanding unit can be used to recovery the clean mud, and reuse it for drilling activity. It can reduce your cost on drilling mud. As most of the clean mud in drilling cuttings have been recovered by the system, it reduces the quantity of solids charge. And after separation of shale shaker and cyclone parts, the solids discharge become dryer and easy for transport.

 

Question 2: How is the desanding unit mud system working?

There are normally 2 or 3 phase separation for the dirty mud from trenchless drilling rig.

The 1rst phase solids control separation: Dirty mud will be fed to shale shaker for to separate the bigger sides solids.

The 2nd phase solids control separation: 10’’ Desander cone. Mud from shale shaker transferred to desander cone through centrifugal feeding pump, solids above 47 microns can be removed after this step.

The 3rd phase solids control separation: 4’’ Desilter cone. Clean mud from desander cone will come out from top of the cone assembly and flow to the desander tank, solids will be discharged outside the system. There will be a centrifugal pump used to transfer mud from desander tank and feed to desilter cone. Solids above 27 microns can be removed after this step.

Operator can choose to only use desander cone or desilter cone, or use both per jobsite condition.

Mixing system is optional for customer. Customer can choose to combined system with mixing, or a separation system with separate mixing, or even build the mixing system locally.

Related Arciels:

• Drilling waste drying system at jobsite
• GN Standard and Compact Waste Management Systems
• Augers/ Screw Conveyors for Waste Management System
• High Configuration 500GPM Mud Systems for HDD Rigs