Category Archives: Desilter
The classification of hydrocyclone used for solid control system
Hydrocyclone is divided into drilling fluid desander, desilter and miniature swirler according different diameter.
The drilling fluid desander: The diameter is 150-300mm swiler is called drilling fluid desander. The throughput of desnader is exceed 20-120m3/h in the pressure of 0.2MPa. In the normal condition of drilling fluid desander can eliminate 95% is bigger than 74um drilling cuttings and 50% is bigger than 30um drilling cuttings. When choose drilling fluid desander, the throughput should be 5 times of maximum discharge.
The desilter: The diameter is 100-150mm swire is called desilter. When the input pressure is 0.2Mpa, the throughput can’t be less than 10-15m3/h. The normal working sate of drilling fluid desander can eliminate 95% bigger than 40um
drilling cuttings and 50% bigger than 15um drilling cuttings. The licensing throughput of desilter should be 1.25-1.5times of the maximum displacement.
We should add the right amount water in swire, decreasing drilling fluid density and viscosity and increasing the separation efficiency of swire.
Design hydrocyclone must base the minimum liquid loss provide the maximal solid phase eliminating efficiency. And it accords to well field physical truth, installation the appropriate number hydrocyclones to increase the treating capacity to meet the requirements of all drilling fluid performance in the whole drilling system.
Functional of DC Solid control desanders and desilters
Desanders and desilters are solids control equipment that is installed on top of a mud tank. Each piece of equipment consists of a set of hydrocyclones that separate sand and silt from drilling fluid while they differ by the size of the hydrocyclones used.
Desanders utilize several 8″, 10″, or 12″ hydrocyclones. Utilizing hydrocyclones with larger internal diameters increases the flow rate as well as the size of the solids removed. Increasing the number of hydrocyclones in the package also increases the flow rate of drilling mud through the desander. Typically a 10 inch cone (hydrocyclone) is capable of removing 50% of solids with in the 40 to 50 micrometer range at a flow rate of 500 gallons per minute.
Functional of desander and desilters:
The equipment shall be suitable for operation with the minimum & maximum ambient temperature of -60C to 550C.
The equipment shall be suitable for Drilling fluid “Mud” having specific gravity of 0.9 to 2.6 and and API funnel viscosity 35 – 100 seconds/quart.
Drilling Fluid (Mud) operating temperature shall be up to 900C.
The equipment shall be designed to remove sand/bigger particles up to 74 microns from the drilling fluid (Mud).
Feed Line shall be so designed so as to provide adequate pressure (30 – 40 psi) to each cone.
DC Solid control can design and manufacture all kinds capacity mud desander and desilters. Please contact us if you have any requirements or something don’t understand.
What is the hydrocyclones functions and volume
Hydrocyclones are simple devices with no moving parts. Dirty fluid enters the cone from the side, and centrifugal force causes the heavier solids to move to the outside wall and drop out the bottom of the cone, and the lighter fluids move up the center of the cone and discharge out the top of the cone. Ideally, the applicable mud system will utilize 5-in. desilter cones, which separate solids 15 to 25 microns in size, and 10-in. desander cones, which separate solids 40 to 50 microns in
size.
The size and quantity of cones needed on a system depend upon the overall rated volume of the mud system. The 5-in. cones can process 80 gpm each, and 10-in. cones can process 500 gpm each. There are other sizes of cones on the market, but we feel this gives us the best volume and micron size separation.
Act Over time, the friction caused by the centrifugal action of the cuttings and fluids inside the cone has the tendency to scour or “wash out” the inside of the cone. Once washing out occurs, the cones ability to effectively remove cuttings significantly diminishes. At that point, the damaged portion of the cone should be replaced.
Foreign matter introduced into the tank, usually from the top deck area or a hole in a scalping shaker screen, can plug the cones, as well. It’s advised to ensure your operators always clean their boots before walking on the tank deck, and take care to not accidentally drop items directly into the tanks. Key indicators of this problem are when mud pours out of the end of one of the cones, or there is no cone discharge at all and it is vibrating. In these cases, remove and disassemble the cone for cleaning.
Functional Use Condition of desander and desilters
DC Solids is professional manufacturer for complete sets of drilling mud separation and recycling equipment. The conventional equipment like shale shaker, mud cleaner, desander, desilter, vacuum degasser, decanter centrifuge, mud agitator, mud gun, centrifugal pump, screw pump, etc. Here, let’s learn more about desander and desilter.
Desander and desilter are solids control equipment with a set of hydrocyclones that separate sand and silt from the drilling mud used on drilling rigs. 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 15~44 μm for desilter.
Functional Use Parameters:
1. The equipment shall be suitable for operation with the minimum & maximum ambient temperature of -60C to 550C.
2. The equipment shall be suitable for Drilling fluid “Mud” having specific gravity of 0.9 to 2.6 and and API funnel viscosity 35 – 100 seconds/quart.
3. Drilling Fluid (Mud) operating temperature shall be up to 900C.
Please contact DC Machinery to get more info about desander and desilters.
Marketing used of Desander and desilter hydrociclones
Desander and desilter hydrociclones are device to separate particles from drilling fluid, which is sorted by shale shaker in the first phase of solids control system. Usually they are located after shale shakers.
Desanders make separations between 40 and 100 microns and offer the flexibility of mounting either one, two, or three 10” desander cones over a cone underflow pan. DCCSQ desanders are also available in vertical or inclined manifold stand-alone models, or for inclined mounting on Derrick shakers.
Desilters are designed to remove silt-sized (20 to 74 microns) solids from drilling fluids. DCCNQ’s round desilters are simple to operate and easy to maintain. DC’S polyurethane hydrocyclone offers a high volume 4” cone, while providing contractors an economical replacement for less efficient older equipment.
The standalone desander/desilter hydrocyclone unit can be assembled above linear motion shale shaker to recycle the useful drilling fluids from hydrocyclone underflow screening by fine mesh screens. Mud cleaner which combines desander, desilter and dewatering shale shaker in one unit is often used in nowadays drilling applications.
The spare parts of desilter cones delivery to Singapore
The hydrocyclones also called cones are the most important parts of desander and desilters. Today, DC Solid control shippped 100sets desilter hydrocyclones to Singapore clients by Air.
Desilter cones are typically 4”, but some client will request 3”, 5” as well. So it is rather flexible on capacity configuration. Desilter can be fit with the bottom shaker or not. Or it can be combined with shaker and desander together to be the mud cleaner. We call desilter as the 3rd phase solids control equipment.
The 4″ drilling mud desilter cone with the features of Silt-sized solids removal (12 ~ 74 microns). 100% polyurethane hydrocyclone. 80 gpm per cone at 75 feet of head. Variable size apex inserts. Available with and without a ramp in the feed inlet. Flexible fast connection is available for user to assemble and compact design, small footprint.
Contact us if you have requirements of any sizes of hydrocyclones.
CNQ×12 Desilter China famous manufacturer
CNQ×12 Desilter is composed of 10-12 φ100 polyurethane hydraulic cyclone and a small fine shaker combination, mainly used to remove the drilling fluid 20-40μm harmful solid phase. The usage shows that the equipment is designed to be reliable, workable, mud removal effect, is the ideal drilling fluid control equipment.
The desilter including fluid feed inlet, fluid discharge pipe, desilter cones, the support frame, bottom shaker or mud chute. The main parts including hydrocyclone, shaker screen, spring, screen motor, and so on.
But how should we maintain the desiter during the working. Firstly check the desilter cones regularly to make sure no block on nozzle or Drop in Apex. Make sure sufficient head, Operate desander prior to desilter when complete well or stop drilling, please brush or clean cones and pipelines to avoid clot.
There are thousands of manufacturer all over the globe manufacture solids control equipment. Desilter is one small part of such equipment. DC solid control is one of the provider of desilters, if you have interest with it, please contact us.
Which industry can be used the hydrocyclone desilters
Hydrocyclone desilter is the third class solids control equipment to treat the drilling fluids. According to the size of the cone diameter, they are divided into Desander and Desilter. Usually the cone diameter is less than 6″is called Desilter, and used as the third-control equipment in drilling operation.
Desilter is composed of 10-12 φ100 or φ125 polyurethane hydraulic cyclone and a small fine shaker combination, mainly used to remove the drilling fluid 20-40μm harmful solid phase. The usage shows that the equipment is designed to be reliable, workable, mud removal effect, is the ideal drilling fluid control equipment.
The desilter is widely used in trenchless HDD, tunneling construction, city bored piling, oil & gas drilling, Drilling Waste Management, Oil Mud Seperation, environment protection, Coal Bed Gas Solids Control System, mining, Oil Sludge Dewatering Systems, Water Drilling etc.
If you have any problems or questions about our products or need our support and assistance, please write to us, we will reply to you within 24 hours. If you become our customer, you will get corresponding discount.
Solid control equipment desilter usage introduction
Desilter used in solids control system is the 3rd phase equipment. Desilter is set after desander and prior to decanter centrifuge. The flow rate of desilter separator is decided by cones number. Usually, we utilize 4″ cone for desilter.
Each 4″ cone holds capacity 12~15m³/h. To achieve desilter separation there should be centrifugal pump as cone feeding pump. Under pump transfer power, there will be sufficient pressure pull drilling fluid swirl in cones body. Then solids will be separated out by centrifugal force. Theoretically, desilter will get rid of solids sized over 15 microns.
Desilter structure
Including fluid feed inlet, fluid discharge pipe, desilter cones, the support frame, bottom shaker or mud chute. The main parts including hydrocyclone, shaker screen, spring, screen motor, and so on.
There are thousands of manufacturer all over the globe manufacture solids control equipment. Desilter is one small part of such equipment.
Normaly working flow of hydrocyclone desander
A hydrocyclone device that removes large drill solids from the whole mud system. The desander should be located downstream of the shale shakers and degassers, but before the desilters or mud cleaners.
A volume of mud is pumped into the wide upper section of the hydrocylone at an angle roughly tangent to its circumference. As the mud flows around and gradually down the inside of the cone shape, solids are separated from the liquid by centrifugal forces.
The solids continue around and down until they exit the bottom of the hydrocyclone (along with small amounts of liquid) and are discarded. The cleaner and lighter density liquid mud travels up through a vortex in the center of the hydrocyclone, exits through piping at the top of the hydrocyclone and is then routed to the mud tanks and the next mud-cleaning device, usually a desilter.
Various size desander and desilter cones are functionally identical, with the size of the cone determining the size of particles the device removes from the mud system.