desanderdesilter – Page 39 – Desander Desilter

The method of use mud cleaner

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.

The correct position of hydrocyclone mud cleaner for whole mud system is behind shale shaker which filter large solids at first step.
The drilling mud prior enter the hydrocyclone must be processed through shale shaker first.
Check the power source and once motor is start, check direction of rotation of the motor rotate in correct direction.
Seeking unusual noise from motors after turn on the machine
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
Clean the screen by end of each shift to prevent blockage of mesh and extend the usage life of screen
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
Re-grease the bearing as needed for proper moving on machine parts
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.
For every 500 operation hours, the machines need regulator maintenances by checking moving parts and replace parts as necessary.
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.

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GNLW454 Decanter Centrifuge For Sale With Discount More Than 30%

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

The bowl diameter is 450 mm ( inch ) , bowl length is 1720 mm ( mm ) , the bowl speed is 2200 or 2500 RPM .
The max capacity of GNLW454G decanter centrifuge : 264 GPM , main motor : 45 KW , Back Drive motor : 15KW .
The bowl length and diameter ratio is 4 to keep a better performance .
Bowl made by stainless material SS304 .
Centrifuge screw weld ceramic tile support , the ceramic tiles bolted on tile support to make it replacable .
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 unit for piling, microtunneling, and trenchless construction

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.

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Seventy units GN Centrifuges in Africa

Early 2015, GN exported around 40units centrifuge to Egypt, plus 30 in 2014. Now 70 in Africa.

As we have a tendency to all grasp, China in Africa has mostly been couched in government rhetoric and clouded by stereotypes. On 29 Oct., China disclosed the small print of its fourth batch of aid price some eighty two million U.S. greenbacks to assist African countrie’s fight against the Ebola virus. Obsolutely not solely politicions, neither another batch of aids. a lot of and a lot of business association is going on. joined of the leading solids management & drilling waste management provider in China, currently a lot of than thirty units carafe centrifuges in operation in Africa in 2014.

If you’re interested, pls check the video here from Youtube: https://www.youtube.com/watch?v=DG3ys2kMN1Y

OIL is usually massive resource in Africa, drilling work is one in every of the foremost necessary activity, Then here comes the setting protection, solids management & drilling waste mangement, not just for recoverying the helpful lubricator, this can be one necessary issue to encourage folks to try to to this although, conjointly to safeguard wherever folks live.

This time, our once sales team comes back from western Africa, once did empowerment & coaching for three rig sites. Nearly all of them victimisation the foremost widespread carafe centrifuge GNLW363 series.

One of the rig web site victimisation 2sets GNLW363 centrifuge, one set is fastened speed carafe centrifuge, with 3200rpm high speed once delivery, conjointly 2200rpm/2500rpm/2700rpm as option; the opposite variable speed centrifuge with VFD instrument panel. With the PLC VFD instrument panel, the client will modification the speed simply from zero to 3200rpm ceaselessly.

Another rig web site, is victimisation centrifuge with flocculant unit for dewatering, if we have a tendency to need higher normal, typically it’d not be enough to solely use mechanical separation, polymer, coagulator powder, or regardless of the chemical is, chemical powder is get a lot of and a lot of necessary within the rig web site, and within the want of drilling waste management.

GN Solids management our selves conjointly packing the flocculant unit with a reliable partner. Doing our greatest to provide client with a 1 stop resolution.

Celebration of GN and EMEC Cooperation on Decanter Centrifuge

Celebration for GN & EMEC strategic relationship was held in Hebei GN Solids Control Co., Ltd’s headquarter, signifying a long term cooperation between GN and EMEC starts on the basis of mutual trust and support. EMEC, fully spelled as Egyptian Mud Engineering & Chemical Company, is the largest mud and solids control service provider in Egypt firstly established relationship with GN three years ago. At the beginning of 2015, EMEC chose GN as their long term cooperated supplier of decanter centrifuge and placed a very big order of GN decanter centrifuge. After the celebration, the large batch of decanter centrifuge will be delivered to Africa.

On the celebration, GN general manager Mr. Zhou said, “ Here, I’d like to extend sincere gratitude to Mr. Amir and Egyptian Mud Engineering & Chemical Company who gives this chance to GN solids control with their excellent insight. We are pleased, delighted and honored. We promised to try our best to improve GN product and provide the best after-sales service. We both have faith in that we’ll profit more than large in the future.” in his speed. Also Mr Amir expressed its thanks and delight when delivering the speech.

As it is known that decanter centrifuge plays a very important role in a set of solids control system because it will separated the ultra-fine solids out then the drilling mud can be clean enough to be reused. Normally 2 sets of decanter centrifuge used in the solids control system for oil and gas drilling, a medium speed for high gravity solids separation, and a high speed decanter centrifuge for low gravity solids separation. This time a large amount of GN high speed decanter centrifuge delivered to Africa as the fruit of this cooperation.

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GN Shale Shaker with Mongoose Replacement Screen Stock Available in Houston Warehouse

After the Spring Festival Holiday, GN back to work for a while, the Inventory of the solids control equipment in Houston has already upgraded. The main equipment available right now are the shale shaker, mud cleaner and decanter centrifuge. These units are requested very often by the customer once the rig starting for setting up.

The shale shaker stocked in GN Houston warehouse is a type of linear motion vibration mode. 4 panel screens design makes it large working area and long time for the drilling mud stay on the screen thus the cuttings discharged out would be much dryer. It is worthy to mention that the screen matched this shaker model GNZS594E is interchangeable with the original Mongoose screen. Same dimension while the difference is material used. GN’s screen is steel frame which is price competitive than the original ones. The Vibration motor used are from Italy Oli or American Martin, both of this 2 brands are acceptable by The States markets.

The mud cleaner stocked is the model of 1000GPM on capacity with 2 pcs 10 inch de-sander cone and 12 pcs de-silter cones. The under flow shale shaker is the same model with the stocked ones for easy maintenance and future spare parts requirements from the customer.

On considering the request for the shaker screen, GN solids also made inventory for the shaker screen size of 23×46 inch from API 60 to API 230. Right now the stock quantity of the shale shaker and mud cleaner are separately 10 units and 6 units. These units could be delivered within 3 days after the order is placed.

The decanter centrifuge stocked is the new version C type model GNLW363CG. Comparing with the BG model, CG has several upgrades on the designs including the feed tube installation location, the adding of solids discharge block ring which could effectively avoid the cutting gathering in the collection box.

If you have any requirement on the stocked equipment, please feel free to let us know.

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GN Decanter Centrifuge on High Support Frame

In oil and gas drilling industry, the decanter centrifuge can be utilized for barite recovery, ultra fine solids separation and drilling waste cuttings management. Based on the different application and customers’ specific request, GN provides the centrifuge sometimes within the mud recycling system in which the centrifuge is installed on the mud tank. Some clients want to locate the centrifuge on the frame for simple operation and maintenance.

Once the centrifuge installed on the mud tank, it is usually utilized for barite recovery or ultra fine solids separation. Within the traditional mud recycling system, the drilling mud could be treated in series by shale shaker, desander & desilter, decanter centrifuge. 2-centriuge product is now the most popular design that could apply for the barite recovery and ultra fine solids separation. This 2 centrifuge is situated as middle speed model first and high speed second. This is a broadly acceptable layout for solids control system.

With increasingly more rules are released for restricting the release of drilling waste, the drilling companies pay much more attention on maximum drilling liquids recovery. Thus the drilling waste management is granularly entering the drilling industry. Additionally, it request our high speed centrifuge to recuperate the drilling liquids as maximum as possible. Therefore, some companies only get the job done for the drilling waste cuttings separation.

Sometimes the contractor don’t equip centrifuge within the mud recycling system because of cost consideration or low requirement on mud cleanness. The centrifuge service could be supplied by other drilling mud company. The centrifuge having a high support frame is bought in cause it may be utilized for the last stage solids control and drilling waste management.

GN Solids Control provides the decanter centrifuge support frame according to customers’ requirement. Even the customer would request the decanter centrifuge and frame support drawing, they fabricate the frame themselves, also is a great choice for centrifuge service

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Centrifuge process

Drilling fluid enter into the hollow shaft in the spiral conveyor by the feeding tubes, then flow into bowl. Because of the high speed rotating of the bowl , to drive the entered drilling fluid rotating together, the solid debris in the drilling fluid is thrown the wall of the bowl, the drilling fluid expel from the screw conveyor pushing to the discharge hole of the small port. The choice of centrifuge by the debris size of separation solid phase, the bowl diameter of centrifuge, the highest speed and the separation factors influence, the drilling site commonly used the solid and liquid density difference, as the separation basic of the settlement centrifuge, mainly clear the solid phase substance in the drilling fluid, is the last level of drilling fluid solid control equipment.

Checking steps before operate decanter centrifuge:

The rotating body do not have any object to block or interfere the spinning operation.

The strength of the belt for main and support motor are not loosen and no crack.

Hand turn the body to ensure the rotation is smooth without resistance. If resistance was felt during the rolling by hand, check both main and support motor first.

Check the inlet flow tube is open, and flow divider also need to be open when operation is start.

Check the water, is it in the rotating body?

It needs to check the motor oil level in the gearbox, rotating joints and the usual step list above if decanter centrifuge is not operation for set period of time.

The filtering steps that involve with shale shaker and hydrocyclone on desander and desilter can’t remove the most part of debris. Adding centrifuge can process fluid further by remove much smaller debris to achieve much cleaner drilling fluid for zero-discharge drilling fluid systems.

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The choice of drilling fluid shaker screen

While perform the drilling project on the earth, the rig produce the byproduct of cutting, crushing and grinding of solids that will be broken in loose pieces in different size. The size in industry standard is measure by micron. Solids control equipments in different filter stage will achieve the result by its design yet for muti-stage filter process, the line up of correct order of the machines are the must.

To make sure the drill hole cutting surface to the ground , the drilling fluid need to have enough speed in return. It depends on the well diameter and rig ability to decide the pump output volume to achieve the fluid speed. To achieve that speed, solids control machineries need to perform in specific purification level base on particle size and treating capacity are fact that need to be consider.

The choice of drilling fluid shaker screen

Shale shaker is filter the solids in drilling fluid and it is one of the primary equipment. The shale shaker filter the solids in various size by use the mesh that have different opening and layers to achieve the task. The mesh number of the screen is bigger, the smaller capacity to remove the solid size is smaller. The mesh number of is smaller, the bigger capacity to remove the solid size is larger.

In the drilling process, the mud pump produce large volume of mud that contain large cutting. The screen should use smaller mesh number to filter the cutting. Later in the drilling process while increase the depth and the well diameter is getting small, the pump produce the mud that contain smaller cutting, then it is time to use larger mesh number to filter smaller cutting. Other consideration such as mix ratio of water and solid will affect the result of filtering by the screen.

GN ATEX and CE certified Solids Control System for Oil Drilling to Europe

Solids control system is very important in a drilling site for it not only ensures safe drilling but also saves a lot cost by recycling the drilling mud. GN solids control is the 1 st API certified manufacturer of solids control system and equipment in China, and also certified by CE which is always required by European customers. Last week, GN solids control finished 3 sets of solids control system for an European customer, and now those system are ready for delivery. This is a repeated order from this customer, last time they ordered one set of solids control system for 750 hp drilling rig.

The main equipment included in these three solids control system is listed as below.

3 sets of shaker tanks, each mounted 2 shale shakers, 1 mud cleaner, and 1 vacuum degasser.

1 set of decanter centrifuge tank with 1 medium speed decanter centrifuge and 1 high speed decanter centrifuge.

1 set of active mud tank with agitators and mud guns.

1 set of suction tank with mud agitators and mud guns.

1 set of mixing tank with mixing hoppers and mixing pumps.

These are standard solids control system: shale shaker for 1 st stage treatment; mud cleaner for second stage treatment; medium speed and high speed decanter centrifuges for third stage treatment also known as the final stage treatment.

As mentioned before, the 3 sets of solids control system are exported to Europe, ATEX is required for motors and electric control panels, CE is required for all equipment. GN solids control is one of the few companies holding all these certificates. Besides solids control system, GN solids control also manufactures and supplies mud system for other kinds of drilling such as HDD and uprising geothermal drilling.

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