Desander is called 2nd phase solids control equipment. It can be used in drilling fluid processing, HDD bentonite recovery, etc.
Hydrocyclone on De-sander
Usually, De-sander including hyrocyclone, steel frame, pressure gauge. De-sander hydrocyclone can be high-chromium iron or Polyurethane (PU). Actually, we ever designed 8″, 10″ and 12″ de-sander hydrocyclone on de-sander separator.
The modular de-sander using 10″ de-sander cone. Such as Derrick, Mi-Swaco, GN Solids Contrl, NOV Brandt, etc. Ccommonly it will separate particles 47-56 microns out from drilling fluid to achieve 2nd purification on drilling mud.
GN new standard de-sander is with two 10″ PU hydrocyclone. And the cone type is clamped connection one. This will save much time to give us higher efficiency on replacement, etc. Also provide better appearance.
How do cones work on De-sander?
The hydrocyclone basic principle is decanter separation. When the de-sander hydrocyclone under 0.25-0.40Mpa the cones will separate 90% solids out of drilling fluid.
 De-sander--Hydrocyclone separator Details is centrifugal feeding pump transfer drilling mud from shale shaker compartment to De-sander inlet. Under the pressure condition and power the drilling fluid will become swirl or whirlpool. Larger particals will be out of drilling mud and flow to de-sander outlet
Then the clean mud will down to direct compartment for next de-silting treatment. In fact, hydrocyclone used in de-sander is same principle on desilter hydrocyclone.
De-sander hydrocyclone used on mud cleaner
De-sander and de-silter combined together with shale shaker as mud cleaner or mud conditioner. The de-sander hydrocyclone used on mud cleaner will be equal with de-silter cones treating capacity. We design it according to clients’ requirement on treating capacity. Usually the de-sander hydrocyclone hold capacity as 500GPM while de-silter cone hold capacity 90GPM.
Continue reading »
written by GN Desander Desilter
\\ tags: 10" cone manufacturer, China cone manufacturer, De-sander hydrocyclone, Derrick desander cone, Desander cones, desander on mud cleaner, Desilter manufacturer
Bentonite is main content of drilling mud. It has certain viscosity, density is a special chemical. Bentonite drilling mud is widely used in oil and gas drilling, HDD, geothermal well, tunneling, etc. various of drilling and construction project.
During well drilling, bentonite drilling fluid will be invaded by much cuttings, solid particles, gas, etc. We need drilling fluid process equipments and system to make it purified.
Desander for bentonite processing
To process drilling mud bentonite we need complete solution. Including shale shaker, Desander, Desilter, decanting centrifuge, as well as centrifugal pump for feeding and mixing hopper
 Bentonite Desander for sale Desander is the 2nd phase of solids control or drilling mud silt removal. It is used to separate particles sized 47-76 microns among bentonite It usually request 10” desander cones. The desander cones are made of PU material. The capacity can be up to 100~110m3/h under pressure of 0.25~0.4Mpa and the treating efficiency is about 90%.
Desander separator structure
Usually the structure is combined with steel frame, hydrocyclones as well as under set shaker. However, the hydrocyclone quantity can be 1~3. And the under set shaker can be included or not.
Actually, bentonite is widely used in many drillings. For different drilling, the bentonite processing will have different configuration. The desander separator structure will be changed accordingly also.
Bentonite desander working principle
The basic principle is centrifugal force separating larger solids out of bentonite mud.
Continue reading »
written by GN Desander Desilter
\\ tags: Bentonite Desander, China Desanding separator, Desander for sale, Desander manufacturer, Desander price
4″ Desilter hydrocyclone is a common type and widely appreciated by users. Since it’s more convenient for configuration on mud cleaners or Desilter separator. The treating capacity of 4″ hydrocyclone (under0.25-0.4Mpa) is about 15~20m3/h. While separation efficiency is about 90%. To cater different system capacity demand we need design and arrange 4″ desilter hydrocyclone quantity accordingly
Hydrocyclone separator
Including Desander and Desilter. They are second and third phase of solids control system. For Desilter hydrocyclone it mainly separate particles sized 15~20 microns minimum. And we also can combine two types hydrocyclone together as mud cleaner or mud conditioner.
For 4″ desilter hydrocyclone we can design it as with underset shaker and non-shaker type. Hydrocyclone separator adapts decanter separation principle. Of course, the separation process is under certain working pressure and sufficient power.
GN new type 4″ hydrocyclones
Presently, there are flange type, and clamp type cones. Considering convenient operation for users GN provide updated design on 4″ desilter hydrocyclones. They are clamp type very easy to replace and install cones.
GN 4″ desilter cones including 3 stainless stell clamps, 2 stainless steel ball valves. The design is user-friendly type. As we know, different clients have different capacity deamnd. We fix ball valves to help user control treating capacity easily.
 GN 4in cone Moreover, cones are one of spare parts, during drilling fluids system operation there might be some broken on them. Then we can turn off the ball valve and turn on other available cones to continue working. All of clamps and ball valves are stainless steel this definitely increase cones usable life and better appearance
Comparison between GN and Derrick 4″ desilter hydrocyclone
1. Quality
Both of them are manufacturing cones use polyurethane. As well as clapm and valves, they both use stainless steel material.
2. Structure
Derrick 4″ hydrocyclones including hydrocyclones body, thread on cone tip, drop in Apex, nut caps.
GN 4″ desilter cones including hydrocyclones body, elbow, thread on cone tip, drop in Apex, nut caps, elbow, clamps, stainless stell valves. Actually we can provide replacement for Derrick 4″ hydrocyclones. And according to clients demand we can provide part of 4″ cones.
Continue reading »
written by GN Desander Desilter
\\ tags: 4" Desilter, 4" separator hydrocyclone, 4"PU cone manufacturer, Derrick cones
8″ Desander cones is one of Desander hydrocyclones. Generally speaking, the desander cones including 12″,10″, and 8″. However, the mainly used one is 10″. Since it provides more convenience and better appearance on Desander separator or mud cleaner. For drilling fluid process desander configuration, we need to consider following informations
8″ Desander cones features
1. It’s maximum diameter on cone is 8″ (200mm).
2. It mainly separate particals between30-45 micron.
3. The treating capacity up to 264GPM (60m3/h)
4. Working pressure: When it is working under 0.15~0.35Mpa, the treating capacity and performance is best situation
5. Design on number, etc.: The treating capacity is key issue on 8″ desander cones number design.
 GN Desander Cone Desander cones structure
From the appearance, it is mainly made of PU or high-Chro casing iron. Desander cones divided into flange type and clamped type. Clamped type will be combined with cone body, clamp, necessary bolts, etc. For the flange type, there will be one flange connection on cone input. And flange plate has all necessary bolt hole for tensioning cones steadily on desander separator.
Nowadays, more and more user prefer clamped type desander cone. Since it is more convenient and user-friendly. For material, they prefer PU one. During drilling fluid process the solid particles wear much to the desander cones. PU one is more durable and beautiful.
How does Desander cone work in system?
In one drilling fluid process system, Desander cone can be designed on Desander separator only, as well as designed on a complete mud cleaner. Contained Desander cone, 4″ Desilter, and under set shale shaker.
We take 8″ Desander cone as example. When it is designed as Desander separator only, the drilling fluid will be pumped by Desander centrifugal pump from Shaker tank or compartment to 8″ Desander cones. Since the pump pressure is powerful for drilling fluid. Then fluid flow become whirl. Under centrifugal force the particles larger than 30 microns will be separated out of drilling fluid through upper outline. Then clean drilling fluid will flow down to under set shaker or drop down to Desilter tank directly.
When it is combined together with Desilter and under set shaker as mud cleaner. The principle and process route is almost same
Continue reading »
written by GN Desander Desilter
\\ tags: 8" Desander Cone, 8" Hydrocyclone, Derrick Desander, Desander Hydrocyclone, Desander Separator, Used Desander Cones
Main introduction on desilter and desander
The both equipments called hydrocyclone separator in well drilling fluid process. Desilter is the third solids control equipment. After shale shaker and desander. Mainly used to separate particles sized 15~40 microns. The common China desilter structure is as following
 Desilter Structure The desander is the second stage equipments before desilter but after shale shaker. Mainly separate particles sized 75-105 microns.
Desander and desilter work principle
The basic principle is centrifugal separation principle. When the suspension particles pumped by centrifugal pump, the drilling fluid will be forced to move as swirl. This will result large centrifugal force.
The drilling fluid will move to cone end close since the cone degree is rather small the drilling fluid will move more and more quickly. If the particle holding higher density will be pushed to cone well easily and strongly. Finally the solid will be discharged through drain output.
At same time, lighter solids will become reverse whirl go up straightly. When the centrifugal force is not sufficient this small part of particles will be involved by fluids and flow away
Different cones will lead hydrocyclone separator get different performance and process result. When we use hydrocyclone separator to separate useless solids there will be much barite in the under flow drilling mud. Usually, hydrocyclone can be made with under set shaker or not. When there is under set shaker, the bigger solid particles will be separated out, while barite will go back to recycling tank
Condition for hydrocyclone separator work
Inspect cones pressure and seal condition, get rid of gas leakage, make sure the feeding pump have sufficient pressure. Make cones cleaned completely after every time operation. Then the input pressure should be larger than suggested pressure. If the density is too high, the drilling fluid is much high
Desilter and desander manufacturer list
For desilter and desander. They are typical mud equipment for solids control. The manufacturers and API certified manufacturer are as following: Derrick, NOV Brandt, GN Solids Control, fluids system, drilling fluids equipments, Kemtron, etc.
written by desander desilter
\\ tags: cones for hydrocyclone separator, desander/desilter separator, drilling fluid desilter, drilling mud desander, high quality desilter/desander
Principle and structure on cones
Cones used in solids control, we usually called hydrocyclone also. Usually including desander and desilter cones. They are combined with Cylinder and centrum. Please find following simple drawing for reference. We can find inlet room is on the cylinder part, the inner diameter is the cone size or model, there is an inlet at side, bow wave lead line is on the top center to be overflow hole. Lower part is centrum, and the angle is 15°~20°. Then there is drop in apex on the bottom
Under pressure, drilling fluid with solid particles will flow into cones, after high rotation, bigger and heavier particle will be threw to cone wall, then slide down till drop in apex and separated out. So, there will be 2 rotary gas flow in the cone, one is liquid contains quantity big solid flow down as cyclone, the other is smaller solid mixed with gas go up as bow wave.
 Desander Cones Cones operation and adjustment
Nowadays, drilling fluids solids control cones are mainly balance cones. If the cone drop in apex is adjusted properly, input pure drilling fluid to it, the fluid will flow through totally from drop in apex, while drilling fluid contains solid flow through it, the solid will flow out of drop in apex. Every solid surface will stick liquid cover, at this time, the drop in apex is called balance point of the cone
When solid content is rather over permitted discharge capacity of cone solid separation, the drop in apex will discharged like a rope, there is no air flow in it then it will be easy blocked, many solid will turn back to overflow pipe then go back to drilling fluid
Furthermore, there will be another situation the solid go through the drop in apex as umbrella type. And in “umbrella” flow, the fine particle content will be higher than “rope” type. So the “rope” type will flow out less solids than “umbrella” type. However, that doesn’t mean “rope” flow is more effective. Contrarily, overflow fluid contains much fine particles, this will make drilling fluid more gravity and density with drilling fluid back to drilling fluid system. Actually, it’s incorrect, if we think drop down flow have heavier density is better
To avoid rope type drop down flow, we must make input properly but not overloaded. We should make some adjustment on cones for ideal drop down flow. According adjustment operation on cone the hydrocyclone separator will have ideal performance even for whole solids control sytem
 Solids Control Desilter Cone types in solids control
Cones can be divided by the diameters, then including desander cones, desilter cones, as well as the micro cones
For desander cones, we usually treat 6”~12” cones as desander cones. And when the input pressure from centrifugal pump is 0.2MPa, every kind of cones will hold capacity: 20~120m3/h.
Usually, desander cones can separate out 95% drilling cuttings sized over 75 microns and 50% drilling cuttings bigger than 30 microns. To improve operation performance, when we choose model, we need 1.25times capacity as permitted drilling fluids capacityDesilter cones usually hold diameter as 4”~5”. When the centrifugal pump holding input pressure as 0.2MPa, its capacity should be not less than 10m3/h.
Continue reading »
written by desander desilter
\\ tags: Derrick desilter cone, Desander hydrocyclone cone, desander separator cone, solids control cones
Each hydrocyclone separator (desander or desilter) feed manifold requires its own pump and motor (dedicated pumps). “Roping” hydrocyclone discharge indicates solids overloading and the need to either add additional equipment, reduce penetration rate, or accept the contamination of the drilling fluid with recirculated drilled solids or cuttings.
Desander and Desilter cone drawing resource
Desanders shall draw suction from the compartment immediately downstream from the vacuum degasser compartment. Desilters and mud cleaners shall draw from the next compartment, and centrifuges from the next compartment.
 Desilter hydrocyclon separator The desilter or mud cleaners(s) then process the fluid from compartment #4 and discharge it to compartment #5 and discharge it to compartment #6.
If a centrifuge or centrifuges are used on the active system, the centrifuges process fluid from the piping between the pump and the input manifold for this equipment shall be as short and straight as possible. There should be no ells, reducers, or swages within three pipe diameters of the flange connecting the piping to the manifold.
For example, if the sand trap is designated compartment #1 and the following downstream compartments are numbered sequentially, the degasser shall draw suction fluid from compartment #2 and discharge fluid to compartment #3.The desanders then process the fluid from compartment #3 and discharge it to compartment #4.compartment #5.
Suction or inlet piping for hydrocyclone separators
Suction piping of hydrocyclone separator shall be designed for linear flow rate of 1,22 m/s to 2,44 m/s (4 Ws to 8 Ws); 15 cm (6 in) for planned flow rates from 1,33 m3/m to 2,65 m3/m (350 gal/m to 700 gal/m), and 20,3 cm (8 in) to 434 m3/m (1200 gal/m). See Pump Tables (not included) for volumetric rates beyond these ranges. (900 gal/m) and 20,3 cm (8 in) to 5,68 m3/m (1500 gal/m).
If the vertical distance between the discharge manifold and the end of the pipe carrying the discharged fluid to the next compartment is more than 1,8 m (6 ft), a vent shall be provided in the discharge manifold near the hydrocyclones to prevent siphoning in the mud tank.
 Desander and Desilter Discharge on desander and desilter
The discharge line to the tank receiving the discharged fluid shall end above the maximum fluid level provided to permit easy and safe service. For proper operation of this equipment, sufficient space, walkways, ladders and hand rails shall be movable and max width design
Discharge lines shall be 15 cm (6 in) for volumetric rates from 1,33 m3/m to 3,41 m3/m (350 gal/m to monitored. Pressure gauges shall be installed on the input manifolds to permit the head at the manifold to be the equation to calculate the head corresponding to the measured pressure.
Many oilfield hydrocyclones are designed to operate at 23 m (75 ft) of head. Verify this by using Where h is the head, ft; p is the pressure, Ibf/in2; pis the drilling fluid weight, Ib/gal; pounds per gallon.
Continue reading »
written by desander desilter
\\ tags: GN Desander/Desilter, Hydrocyclone desander&desilter, Mud cleaner cyclones, Separator hydrocyclone
Derrick Desander cone introduction
Derrick Desander cone is 10″. And its material is PU also. The treating capacity is about 500GPM. But can be upto 1500GPM maximum. For the type, Derrick desander cone can be made as horizontal and vertical as hydrocyclone Desander separator. Derrick Desander only have one model, it holding three 10″ Desander cones.
 10" Derrick Desander Cone 10″ Desander cone feature
Desander cone actually have 4 types, including 12″, 10″, 8″, and 6″. We take 10″ Desander cone as example. Usually, it will separate 47-76 microns particals out. However,GN Desander cone can separate solids upto 1mm. Just the usable life will be different with common partical size
Desander cone can be made of polyurethane, as well as casting iron, and part of ceramics. All of the material are durable and anticorrosive to drilling fluid. For the clamp on the desander cone, they are stainless steel. And the clamps are rather easy-handling for tighting and untighting.
More info on Derrick 10″ cone
Derrick’s 10” polyurethane hydrocyclones offer operators a high volume 500 GPM cone where feed is tangentially blended into the cone entry as a narrow rectangle. This design minimizes turbulence in the upper section of the cone, allowing the solids to move quickly to the cone wall.
Continue reading »
written by desander desilter
\\ tags: 10" Cones manufacturer, 10" Desander cone, China 10" cone, Derrick Desander
There are so many issues affect hydrocyclone separators performance. Please find following brief information as reference. In subsequent content we’ll do further introduction on it. And make more sufficient introduction on technique and physical
Issues affecting hydrocyclone separator
- Construction parameters: Including cone diameter and height, inlet diameter, overflow line diameter, and cone angle, the discharge line diameter and the installation manner of overflow line
- The operation parameter: Inlet pressure, back pressure of overflow line
- Drilling mud property: Content of solid particles, solid percentage, viscosity, solid density, etc.
Detailed information on above issues
1. Hydrocyclone separator diameter
When other parameters are stable, only increase hydrocyclone separator diameter won’t affect treating capacity. However, there is relation between inlet diameter and overflow line construction, their product and cone diameter square have direct-ratio relation. So when other construction factor increase according to diameter increase percentage, the treating capacity will have direct-ratio with diameter square.
 Hydrocyclone Separator-Desilter Big diameter hydrocyclone separator is much easier and more reliable than little diameter hydrocyclone. It will decrease opportunity of block or jam. So when we can get same technique standard, we should consider big diameter hydrocyclone as superior one. As we all know, most manufacturers promote big hydrocyclong separator since this matter. GN solids control also provide big diameter hydrocyclone separator and customized configuration on Desander, Desilter as well as mud cleaner.
The desander hydrocyclone can be 8”, 10”, 12” and desilter ones can be 4”, 5”, 6”. Number and diameter size both can be customized accordingly
2. Inlet diameter
The particle viscosity have direct-ratio of inlet diameter square root. However, the fact is inlet diameter change will affect performance much but it has few effect on viscosity of edge particle, if we decrease inlet diameter, it won’t work for separate smaller particle
3. Hydrocyclone overflow line diameter
The diameter of overflow line will affect every working performance. For example, when the inlet pressure is stable among certain range, increase d will increase treating capacity as direct-ratio accordingly, when the performance is stable, increase d inlet pressure will decrease as square. In order to get good classification, usually need to meet d=(0.2-0.4)D.
Continue reading »
written by desander desilter
\\ tags: Desander separator manufacturer, Desilter Hydrocyclone, Hydrocyclone Separator
GN solids control produce linear motion mud cleaner and balanced elliptical motion( BEM) mud cleaner.
A mud cleaner is consist of de-sander, de-silter and shale shaker, GN also produce linear motion shale shaker and BEM shale shaker with 3 panels or 4 panels. The larger screening area it has, the better treating effect can get. So clients prefer 4 panels shakers rather than 3 panels shaker, but it depends on the treating capacity and your mud tank dimension, 4 panels shakers are not always better.
 linear motion Mud cleaner We have 4 models linear motion shakers GNZS83-3, GNZS63-3, GNZS83-2, GNTJ60. GNZS83-2 shaker and GNZS83-3 shaker adopts same dimension shaker screen, pyramid screen or soft strip screen, just when clients need smaller treating capacity such as 60m3/h, we will recommend 2 panel shale shaker GNZS83-2, when they need large treating capacity such as 200m3/h, we will recommend 3 panel shale shaker. GNZS63-3 adopts Brandt Cobra shaker screen with wedging technology, when clients need a treating capacity120m3/h.
G force is an important parameter for shale shaker. We use Italy Oli vibrating motor, so the max G force can reach 7.0 G, and it is adjustable.
Deck adjustable angle is also paid more attention to make a decision, GNZS83-3 shaker can be adjustable -1°～5°
The flow rate of 10” hydrocyclone at 75’ head is about 400gpm, the hydrocyclone number is depends on the total flow rate you required, for example, if you need 1000gpm capacity, you need 3 No.s, if you need 800gpm, 2ea is enough.
The flow rate of each 4” cone at 75’ head is about 75gpm, if 1000gpm, you need 16pcs 4” cones.
4 Inlet & outlet discharge headers pipe connection
Usually it is 6” inlet and 8” outlet. We provide 2 methods of connection, one is flange connection, the other one is flexible hose connection, you can disassembly the hydrocyclone part during transportation if it exceeds the transportation limit. When you arrive at drilling site, installation is convenient as well, it does not take a lot of time. Also you can connect any hose with the flexible hose very fast.
written by GN Desander Desilter
\\ tags: de-sander, de-silter, linear motion shale shaker, oil field design, pressure gauge, shale shaker
|
GN Solids Control Brochure
