Tag Archives: Oilfield centrifuge
Why must use the decanter centrifuge in working site
The structure and performance of drilling fluid centrifuge all have a bid progress, our country have already special mud centrifuge designed accords the characteristics of drilling fluid. Drilling fluid centrifuge is the most difficult master and the structure is complex equipment. But it is the key equipment except shale shaker.
The initial stage of decanter centrifuge became solid control system is the chemical centrifuge is introduced. Not only the separation size or capacity all can’t meet the requirement of drilling fluid solid control technology. Now decanting centrifuge has the characteristics.
The capacity from small to large, foreign has already the centrifuge can dispose 4T material per hours.
It has common centrifuge and high speed centrifuge. The common centrifuge can’t solve the whole problems of drilling fluid. High speed centrifuge can dispose drilling fluid, the disposing drilling fluid become dry material and water two parts. Using it to process drilling fluid can maintain environment and ecological environment.
The transmission structure evolves ingle motor drive from double motor.
The prime centrifuge is chemical centrifuge, the drum and conveying screw are all use stainless steel to manufacture. In recent years we have already research the drilling fluid solid cobtrol special centrifuge with the material of drum and conveying screw is carbon steel, so the cost is decreased.
The abrade level of drum and conveying screw has the structure of using bonding method dressing pad the ceramic disk, it can improve the service life of centrifuge.
DCLW Decanter Centrifuges for oilfield applications
Decanter centrifuge is a important equipment in solid control system. It is widely used in drilling waste management system and oilfield mud circulation system.
Decanting centrifuge key part is screw conveyor and transmission. When centrifuge work, drilling fluid will flow into centrifuge through drilling fluid input. Then the roll bowl will increase speed and fluid will flow into centrifuge through one fixed input pipe. Since rolling bowl rotate at rather high speed.
Drilling mud decanter centrifuge are designed specifically to remove unwanted solids and fine particles from virtually all kinds of used drilling mud, including those based on water/synthetics and conventional oil-based drilling fluids.
Features of DCLW355 VFD Decanter Centrifuge:
1. Designed with high speed. The max speed can reach to 3400RPM
2. Made of selected material. The main body and main parts of the decanter centrifuge are made of selected stainless steel material. So, our centrifuge can resist rust or erosion.
3. Stainless steel with the tungsten carbide alloy protection can ensure a longer service life of the centrifuge
4. High quality and competitive price
5. Fast delivery and good package
DCLW Decanter Centrifuges for oilfield applications are often introduced to deal with drilling mud within active solids control system or waste effluent of drill cuttings. With middle speed decanter in operation, barite can be recovered and high speed decanter for the removal of undesired ultra fine solids.
Our purpose-built oilfield decanters are abrasion resistance, combine long life with capacity and performance, require less maintenance time and reduce down time. Top rated explosion proof motors with approvals of IEC Ex, ATEX, UL for option for hazardous area, wired with 460V / 60Hz, 380V / 50Hz.
Drilling fluid centrifuge for Unweighted and Weighted Drilling Fluids.
Drilling fluid centrofuge is the 4 stage equipment of the oil& gas drilling fluid circulating system. The centrifuge suck the mud from the compartment receiving the discharge from the desilters and mud cleaners, and the returned stream is directed to the next compartment downstream.
DCLW centrifuges can be used in Unweighted Drilling Fluids and Weighted Drilling Fluids. Following is the maters of the centrifuge used in the different materials.
When centrifuging the unweighted drilling mud, keep in mind the following: the centrifuge with High G force as the solids loads are low. Adjust the weir to a deep pool to maximized solids separation. Control a smaller mud feed rate to increase residence time Operate centrifuges in parallel, not in series if multiple centrifuges are required.
With the unavoidably higher solids content of weighted mud, the increase of gel strengths and viscosity, as well as the degradation of ? quality associated with the diminution of particle size with time, can become a serious problem. The problem is caused by the increasing concentration of colloidal and near-colloidal particles that are to be separated from the base. Centrifuges are used to selectively remove these solids.
With high solids content of weighted fluids, torque is a problem when processing it, the following is some advice when operating the centrifuges. Increase pond depth. Reduce in rpm or run a higher conveyor differential. Process the mud at a reduced feed rate Centrifuges.
Key benefit of oilfield centrifuge from DC Mud equipment company
An oilfield centrifuge is one of solid control equipment which has a capability to remove solid which is larger than 10 micron.The oilfield centrifuges have limitations on feed rate, solid discharge, power of motor, etc. Therefore, it cannot handle the entire solid in the mud.
The best way is to place shale shakers and/or hydrocyclones upstream of the centrifuges in order to remove large solid particles and let the centrifuges remove large portion of small particles which cannot be separated by shale shakers and hydrocyclones. By doing that, you will be able to effectively eliminate both large and small particles.
Key Benefits of DC Mud centrifuge
Simple, compact and robust design
High efficiency in removing fine solids
Automatic, unattended operation
Low operating cost and easy maintenance
Reliability and long service life
Extremely versatile – can be used with all mud types
DC Mud equipment company has many models centrifuges are available for customer option, customized centrifuge could be designed and provided as per customer requirements.
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.
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 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.
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.
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.
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.
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.
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.
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.
Small flow decanter centrifuge for waster water processing
Sludge dewatering is the separation of a liquid and solid phase whereby, generally, the least possible residual moisture is required in the solid phase and the lowest possible solid particle residues are required in the separated liquid phase.
DCLW Small flow decanter centrifuge is a professional unit for waster water processing unit. DC Machinery can supply treating capacity from 3-10m3/h samll flow decanter centrifuge.
In this case, the residual moisture in the dewatered solids determines the disposal costs and the centrate quality determines the pollution load returned back to the treatment facility. Minimizing both must be achieved at the lowest possible cost, with the lowest possible polymer and energy consumption, with low maintenance costs and with the lowest possible number of required operating staff.
In practice, the operator quickly realizes that there is no clearly defined operating point given daily and seasonal fluctuations; changes in system input or process configurations, as well as malfunctions of every sort always present new challenges that must be met.
The DCLW model decanter centrifuge is a highly engineered piece of process equipment designed to separate insoluble suspended solids from a liquid. The centrifuge can be used to produce a relatively dry cake from the separated solids and are flexible enough to cope with a wide fluctuation in the feed material and still achieve excellent clarification and dewatering performance.
A decanter centrifuge from DC Machinery are painting now
The decanter centrifuge ordered by my Russian client are painting now this morning. It is used for oil drilling site to process the drilling fluid and located after the desilter.
Drilling rig centrifuges have got large development on both structure and functions. Especially there are many manufacturers design centrifuges according to drilling mud features or property. Then the centrifuge become many models and types used in various drilling projects.
Actually, in drilling rig solids control system centrifuge is the most complicated one. It is rather difficult for operator get leagal operation, etc. However, in long term its important position is following shale shaker subsequently..
So DCLW centrifuges have adopted new technology on conveyor. Such as mount carbon tungsten alloy plates by welding and bolts. This increase centrifuge conveyer usable life and whole equipment duration.
You are welcome to contact Tangshan Dachuan Machinery to get more detailed infos of different type centrifuges, we will supply our best service for you.
Solids Control Equipment – Centrifuges of DC Machinery
Drilling mud decanter centrifuge is the fourth stage equipment for a drilling mud system.Drilling mud cleaning first stage uses drilling fluids shale shaker ,then second stage uses desander,third desilter,(now drilling mud cleaner is widely used to replace desander,desilter).
The decanting centrifuge produced by DC Machinery consists of a rotating horizontal centrifuge bowl with a conveyor turning in the same direction but at a lower speed. The slurry is introduced at the centre of the narrow end of the bowl and travels to the liquid overflow at the opposite end.
Drilling rig centrifuges have got large development on both structure and functions. Especially there are many manufacturers design centrifuges according to drilling mud features or property. Then the centrifuge become many models and types used in various drilling projects.
As we know, at the beginning centrifuge for drilling rig is from chemical and food industry, etc. But now, we find centrifuge for drilling fluid process is more advanced and professional.