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Complementary use of hydrocyclones and centrifuges

DC Machinery offers solutions for all of your Classification needs from hydrocyclones and centrifuges to classifiers and heavy media separation.

Hydrocyclones are related to centrifuges in that both are intended to separate heavies and lights by application of centrifugal force. The key difference is that hydrocyclones are passive separators capable of applying modest amounts of centrifugal force, whereas centrifuges are dynamic, spinning separators that are generally able to apply much more centrifugal force than hydrocyclones.

cones

Another key difference between hydrocyclones and centrifuges is cost. Centrifuges are expensive precision rotating machines that often need sophisticated control, whereas hydrocyclones have no moving parts and usually no controls at all, so they are lower cost devices.

hydrocyclones

Hydrocyclones and centrifuges are complementary rather than competing devices. If gravity alone will settle a significant portion of your solids in a minute or two using a quick bottle test, you should investigate hydrocyclone separation. If settling takes much longer than this, then you may need a centrifuge or other separation method.

Old-fashioned desander and desilter delivery from DC Solid control

Desander and desilter is widely used in mud cleaning system. Following the progress of the time and high requirements of users. The desander and desilter all make greats progress. But recent days, DC Solid control company got an order of 6 sets old-fashioned desander and desilter used for HDD industry.

Desander is installed on top of the mud tank following shale shaker and vacuum degasser, but before the desilter. Desilter is installed on top of the mud tank following Desander. They also can be installed completely: in this case, they are installed on one deck shaker and called mud cleaner or mud conditioner.

desander desilter

Desander removes the abrasive solids from drilling mud which cannot be removed by shale shakers. Normally the solids diameter for desander to be separated would be 45~74μm, and 15~44μm for desilter.

Both Desilters and Desanders are available in a large range of configurations including stand alone, over a shaker as a mud cleaner or packaged with a supply pump as a mobile desilting unit. Please contact DC Solid control office to discuss applications and appropriate technical specifications.

 

Simplified Principle And Operation Of Mud Gas Separator

The mud/gas separator is designed to provide effective separation of the mud and gas circulated from the well by venting the gas and returning the mud to the mud pits. Small amounts of entrained gas can then be handled by a vacuum-type degasser located in the mud pits. The mud/gas separator controls gas cutting during kick situations, during drilling with significant drilled gas in the mud returns, or when trip gas is circulated up.

The operating principle of a mud/gas separator is relatively simple. The device is essentially a vertical steel cylindrical body with openings on the top, bottom, and side.

poorboy degasser

The mud and gas mixture is fed into the separator inlet and directed at a flat steel plate perpendicular to the flow. This impingement plate minimizes the erosional wear on the separator’s internal walls and assists with mud/gas separation. Separation is further assisted as the mud/gas mixture falls over a series of baffles designed to increase the turbulence within the upper section of the vessel. The free gas is then vented through the gas vent line, and mud is returned to the mud tanks.

mud gas separator

Operating pressure within the separator is equal to the friction pressure of the free gas venting through the vent line. Fluid is maintained at a specific level (mud leg) within the separator at all times. If the friction pressure of the gas venting through the vent line exceeds the mud-leg hydrostatic pressure within the separator, a blow-through condition will result sending a mud/gas mixture to the mud tanks.

As one can readily see, the critical point for separator blow-through exists when peak gas flow rates are experienced in the separator. Peak gas flow rates should theoretically be experienced when gas initially reaches the separator.

Trial order of mud agitator from India drilling service company

DC Solid control got a trial order of drilling mud agitator from a India state-owned enterprise drilling service company. Now the trial order mud agitator is packing and prerare to delivery to Beijing Airport.

DC Solids Control as a professional manufacturer for soilds control equipments, we have designed lots of high-quality products, and JBQ series Agitator is one of them. To keep both the mud uniformity and the suspension of solids, the mud agitator is used to agitate the mud consecutively and reliably.

mud agitator

This agitator agitates the mud to make cuttings, silt and sand pass the solids control system without being precipitated onto the tank bottom.

Due to the simplex turbine decelerator, this product is featured by compact construction, light weight, balanced transmission, low noise, high efficiency of transmission and strong agitating power. Therefore, it is a reliable product in the solids control system.

agitator producer

More than 7.5 kW Mud Agitator uses the turbo and worm gear speed reducer, with the large torque transmission、 the revolution is steady、it works reliablely and has great merit. Common model of mud agitator is JBQ5.5kW 、JBQ7.5kW 、JBQ11kW and JBQ15kW.The drilling mud agitator is an important components for DC Solids Control drilling fluids processing system.

Large stock of DCLW355-1258VFD Centrifuges enjoy discount sales

DC Solid control is a professional manufacturer of mud cleaning equipment for many years. 80% of our business are export to abroad based on our cost effective product. To show gratefulness to the registered customers, we bring out a model of decanter centrifuge of DCLW355-1258 VFD centrifuge for discount sales.

This model of decanter centrifuge is a professional unif for oil& gas drilling mud cleaning system. It is used as the fourth stage mud separation in the whole cleaning system.

centrifuge

The drilling mud decanter centrifuges can separate fine particles well,for separating 5~7μm particles in drilling mud,usually use medium speed decanter centrifuge,for less then 2μm,usually use high speed decanter centrifuges.

decanter centrifuge

Main parameters of the DCLW355-1258 VFD centrifuges:
1. Drum length and diameter: 1258mm and 355mm.
2. Main and back motor: 30kw and 11kw
3. Max treating capacity: 45m3/h
4. Bowl speed(VFD): 0~3400rpm
5. Dimension: 2900×1500×1650mm
6. Weight: 3000kg

Simplified solid control system, DCLW centrifuges with the advantages of low energy consumption , lighter working load, and the purification efficiency increased by 30% than original.

 

Drying shaker delivery to Russian used for drilling cutting treatment

DC Hi-G Dry Shaker is a linear motion shale shaker,on the one hand,it is used to recover the mud from drilling cuttings of the main shale shaker and hydrocyclone,so as to reduce the mud waste and drilling cost;on the other hand,it makes the the liquid/oil content in the drilling cuttings to as low as about 10%(w/w),for the purpose of reducing environmental pollution.

drilling fludi shale shaker

DC Solid control manufactured 2 sets drying shaker for Russian clients used fo drilling cutting treatment. DC High G Force Drying shaker is design for primary solids control and drying the cuttings from the primary solids control equipments, recover silts and ultra-fine sands, provide solids in a consistently stackable and conveyable form and requires no expensive chemicals or polymers. DC high G drying Shaker with Adjustable G force Up to 8.0 G.

shale shakers

Features and benefit of DC drying shaker
Low maintenance dryer reduces operational costs.
Wedgelok system allows for quick screen changes.
Centrifugal pump and spray bar unit built into the fluid recovery tank.
Single shaker unit is mounted in a four sided shale bin.
Dual Shaker unit is skid mounted for easy, cost effective transport.
Includes an auto-pump feature to prevent potential spills.

The drilling cuttings will be drying by the high G shaker, and fluids will be catched by the tank under the shaker, a centrifuge feed pump will take the fluids and feed to a high speed decanter centrifuge, after treatment by the high speed decanter centrifuge, the fluids can return back the active mud system for resue.

Customized mud tanks manufacturing for American users

This month, DC Solid control got an order of 10 sets mud tanks for American users who are mainly design and manufacturer mud system for American, Australian and more European countries.

The mud tanks totaly accord to the users requriements and draws. The drilling mud tank is normally configured with mud suction line, clean water line and mud gun line, and mixing tank with mud hopper mixing line. Heating line can be added for freezing cold working environment.

storage tank

Each mud tank is provided with clean out gates with butterfly valve. Walkways and tank top covered with serrated galvanized bar grating or checkered plate. Fixed ladder to be provide for accessing the top of the mud tank.

Surface preparation: Sand blasting / shot blasting; prime coat specification / dry film thickness: 50 µm; intermediate coat / dry film thickness: 80µm; finish coat / dry film thickness: 50µm. Final colors is customizable.

DC Solid control designs and manufactures the complete mud tank separation systems for all types of drilling applications. Welcome to your any inquires.

 

Advantages of using decanter centrifuge for oilfield

Having effective solids control equipment is very important for any oilfield. Without having proper solids control, drills can encounter a variety of problems.

With a horizontal oilfield decanter centrifuge, the mixture of drilling liquid and cuttings and solids enter into the centrifuge. When it enters the centrifuge, it gets spun at an extremely high rate, sometimes as much as 3000 times the force of gravity. When this happens, the solids will separate from the liquids. When they are separated, the drilling liquid can be decanted and eventually returned to the mud tank where it can be replaced into the borehole for efficient drilling.

centrifuge supplier

One of the biggest advantages to having an oilfield decanter centrifuge is the size that it takes up. Compared to other solids control equipment, a centrifuge takes up less real estate. On many oilfields the site footprint is not large enough to support a wide range of solids control equipment. A centrifuge is highly effective and efficient so you can separate solids from drilling liquids even on small drilling sites.

drilling fluid centrifuge

If you are looking for an oilfield decanter centrifuge that is highly effective and affordable, please browse our products. We offer a range of centrifuges of different sizes and capabilities that give you the exact results you need at a price that you can afford.

Development histry of DC Solid control shale shaker

Shale shakers are the first line of defense for a properly designed solids control system. Shakers have been used on drilling rigs since the 1940’s and are a significant part of the drilling process.

Shale shakers work by removing solids from drilling fluid as the mud passes over the surface of a vibrating screen. The liquid portion of the mud and solids pass through the screen while larger solids fall off the back end and are thus discarded.

shale shaker

Drilling fluids are a key aspect of the drilling process and often lubricate & cool the drill bit and take drilled cuttings from the borehole. Shakers still remain the backbone of any solids control system. As time has progressed, so have these technologies; more advanced and efficient designs have been cultivated including screen technology.

For more than 10 years, DC Solid control has manufactured effective solids control and waste management equipment. DC’s driving principal is to provide quality, dependable equipment. DC Solid control is an original equipment manufacturer (OEM) of shaker screens focused on today’s drilling contractor needs. Cleaner mud, increased productivity and screen life are key to any drilling operation.

DCZCQ Vacuum degasser test before shipping abroad

Vacuum degassing is a technique of removing dissolved gas from a liquid solution by lowering the pressure inside a vessel containing the solution.

This month, DC Machinery manufactures a ZCQ270 Vacuum degasser for a foreign clients used for oil& gas drilling field, and now the vacuum degasser is testing before delivery.‘

vacuum degasser

What items should be test before delivery of the vacuum degasser:
1. Bearing Temperature:Rise≤100°
2. Whether has bad Vibration.
3. Vacuum Degree0.03MPa~0.045MPa
4. Seal Text has no Leakage under 0.5MPa.
5. Sound Intensity:≤80dB
6. Paint Appearance whether Damaged.
7. Fastening Piece whether fasten.
8. The Spare Parts whether are Complete.

vacuum degasser

According to 2 day test, the DCZCQ270 vacuum degasser is qualified to leave factory. DC Machinery can produce four models vacuum degasser, ZCQ240, ZCQ27., ZCQ300 and ZCQ360. If you have special requirements of it, please contact us.

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