Industry News Archives

April 22, 2023April 22, 2023

Shield muck treatment is an important environmental protection work in infrastructure projects

Shield muck treatment is a significant environmental protection work in construction projects. Shield muck refers to the accumulated soil material caused by the unstable excavation soil structure in large-scale construction projects such as railways, highways, and tunnels. It is a material that has been artificially transformed, and its characteristics determine its complexity. To deal with shield dregs, it is necessary to consider its environment, seek a reasonable and economical method, and pursue a low-cost method and an efficient process flow.

Basic principles of Shield muck treatment:

1. Respect for the natural environment: The treatment of shield excrement should be based on the premise of protecting the natural environment, that is, to avoid adverse effects on the ecological environment and reduce the discharge of pollutants;

2. Energy saving: energy consumption should be considered during the treatment of shield excrement, and energy-saving and water-saving equipment should be used;

3. Comprehensive utilization: During the treatment of shield excrement, attention should be paid to the recycling of resources, focusing on the treatment of useful components, such as ores, organic substances, etc.;

4. Pursue low cost: In the process of shield tunneling muck treatment, it is necessary to save as much as possible, adopt effective energy-saving and water-saving measures, and maintain the lowest treatment intensity and cost.

Tags: Shield muck treatment, shield tunneling muck treatment, suppliers, manufacturers, factories, wholesale, buy, price, quotation, bulk, for sale, companies, stock, cost.

KOSUN- China Solids Control Leader&Drilling Waste Management Expert
Email: sales2@adkosun.com
WhatsApp/Wechat:+86 18792396268
Contact person: Lily Wang
Online consulting:
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January 30, 2023

Drilling Fluid Function and Circulation Procedure

Drilling fluid is the blood of drilling, and Drilling Fluid Function are:
1) Carrying and suspending cuttings;
2) Cooling and lubricating drill bits and drilling tools;
3) Cleaning and scouring the bottom of the well to facilitate drilling;
4) Prevent blowout;
5) protect the well wall and prevent the well wall from collapsing;
6) transmit power for downhole power drilling tools.

The properties of drilling fluid mainly include:
(1) density; (2) viscosity; (3) yield value; (4) static shear force; (5) water loss; (6) mud cake thickness; (7) sand content; (8) pH; (9) ) solid phase, oil-water content.

Commonly used drilling fluid purification equipment:
(1) The shale shaker is used to remove sand particles larger than the mesh size;
(2) The cyclone separator is used to remove particles smaller than the mesh size of the vibrating screen;
(3) screw type centrifuge, the effect is to reclaim barite and separate clay particles;
(4) Sieve drum centrifugal separator, the function is to recover barite.

Circulation procedure of drilling fluid in drilling:
Drilling fluid tank via pump→ground manifold→standpipe→water hose, faucet→inside the drill string→drill bit→annular space outside the drill string→wellhead, mud (drilling fluid) tank→drilling fluid purification equipment→drilling fluid tank.

November 21, 2022November 21, 2022

What are the treatment methods of petroleum water-based mud drilling waste

What are the treatment methods of petroleum water-based mud drilling waste? During the treatment of petroleum water-based mud drilling waste, the inner cone rotates at a high speed of 900 rpm, and the rotating body generates a centrifugal force of 430G. Finally, the liquid phase will be discharged from the pipeline, and the dry solid phase will be discharged from the bottom of the equipment.

In response to this technical problem, KOSUN organized a technical team and domestic and foreign industry experts to carry out technical challenges, and made many technical improvements on the basis of the traditional vertical cuttings dryer. The treatment of petroleum water-based mud drilling waste has added intelligent electronic pulses. Flushing device, air source system, air conditioning system, water source filter, etc.

Petroleum water-based mud drilling waste treatment, drilling waste treatment equipment, three series of 25 categories of products, they are widely used in oil and gas drilling and workover, coalbed methane drilling, shale gas drilling, petroleum water-based mud drilling waste Material treatment, tailings treatment, river cleaning engineering, industrial wastewater treatment, environmental sewage treatment, waste oil recovery and purification treatment and other fields.

August 28, 2022August 28, 2022

There are two main methods of engineering construction mud purification

There are two main methods of engineering construction mud purification: sedimentation tank and mechanical equipment. The current mainstream mud-water construction has abandoned the use of large natural settling tanks and switched to a combination of vibrating screen and cyclone equipment for construction. The KD series mud water treatment unit manufactured by our company is mainly used to purify mud, complete mud recovery and solid slag treatment.

During the drilling process of the mud, due to the continuous entry of drilling slag into the mud, the specific gravity, viscosity and sand content of the mud change, which cannot meet the requirements of mud performance, and must be treated or purified, mainly by solid-liquid Separation, the drilling slag in the mud is separated and discharged and then recycled.

Mud-water balance shield mud-water separation According to the difference in the structure of the mud-water tank and the control method of the mud pressure, the mud-water shield is divided into: direct control type and indirect control type.

Similar slurries are also used in diaphragm wall operations (dual milling) and cast-in-place piles (rotary drilling and punching equipment).

May 22, 2022May 22, 2022

KOSUN Construction Mud Solid-liquid Separation Equipment

Linear Dewatering Shale Shaker – Construction Mud Solid-liquid Separation Equipment
Linear Dewatering Shale Shaker is specially designed to separate larger and coarser solid particles. The construction mud enters the shale shaker through the feeding funnel, and separates large-diameter solids such as large stones. The screen on this shale shaker has a longer lifespan than traditional woven screens.
Double-layer mud Shale Shaker
After being screened by the Linear Dewatering Shale Shaker, the liquid phase enters the Double-layer mud Shale Shaker again. The Double-layer mud Shale Shaker is a two-stage separation. It first enters the bottom layer of the Double-layer mud Shale Shaker. The mesh number of the bottom layer is smaller, and the coarse particles are further screened. The mesh number of the upper screen is higher, and the liquid phase passing through the bottom screen enters the upper screen again, and the effect is better.
Mud cleaner
The liquid phase screened by the Double-layer mud Shale Shaker is pumped to the mud cleaner. The mud cleaner consists of two 10-inch desander cyclones and 12 4-inch desander cyclones plus a shale shaker. The liquid phase first passes through the desander cyclone, and then enters the desliming cyclone. After separation by the mud cleaner, the material conditions for entering the centrifuge are reached.
Decanter centrifuge
The separation capacity of the decanter centrifuge is more refined. In order to ensure a good use effect, the requirements for the materials entering the centrifuge are relatively strict, so the front coarse screen, fine screen and cleaner are processed. The centrifuge can separate solid particles above 2-5um. After the centrifuge treatment, it meets the customer’s requirements.
Flocculation dosing system
The flocculation dosing system is the icing on the cake. When the level required by the customer is higher, the flocculation dosing system can make the centrifuge more effective.

If you have any inquiries about equipment needs or solutions in this regard, you are welcome to call us.

March 30, 2022March 30, 2022

Application Scope of Tunnel Mud Purification Equipment

Tunnel mud purification equipment has a wide range of applications, including mud purification projects in the fields of underground tunnel shields, bridge pile foundations, sand washing recycling, river dredging, and trenchless engineering, Tunnel mud purification equipment can help reduce mud discharge and sticking phenomenon, it is an essential equipment for environmental protection foundation construction.

The tunnel mud purification equipment is mainly divided into two parts: mud separation system and cyclone separation system. The equipment is mainly composed of coarse shale shaker module, desanding and desliming module and slurry pump equipment. The mud separation system generally uses coarse mud shale shaker equipment for effective treatment, and the coarser solid phase particles are preliminarily separated. The cyclone separation system is mainly completed by the de-sanding and desilting cyclone treatment equipment.

Features of tunnel mud purification equipment:

1) The mud processing capacity is large, and the purification and sand removal efficiency is high.

2) The shale shaker equipment has a long service life, a low failure rate, and is easy to install and maintain.

3) The screen angle, mesh size and exciting force of the shale shaker can not only be adjusted flexibly, but also can achieve good screening effect on various bottom layers.

4) Centrifugal slurry pump equipment has a high degree of generalization and good corrosion resistance, and is suitable for long-term transportation of slurry with strong grinding, corrosion and high concentration.

5) The modern cyclone has a reasonable structure, wear-resistant and corrosion-resistant materials, convenient operation, high economical practicability, and can be used for a long time in harsh environments.

6) A control valve is provided between the main inlet pipe and the liquid outlet pipe of the desander and the desilter, and the cyclone is provided with an automatic sand prevention and plugging device and an underflow port adjustment device.

The tunnel mud purification equipment designed by KOSUN has a large processing capacity, which can effectively reduce the cost of mud treatment and greatly reduce the output of waste slurry. It is a truly ideal modernization device for environmental protection construction.

February 28, 2022February 28, 2022

KOSUN Oily Sludge Treatment System Sent to Kazakhstan

At the end of January 2022, a large oily sludge treatment system and related centralized control system designed and manufactured by KOSUN was completed, assembled and commissioned, and then packed in 14 train cars, which were loaded from China-Xi’an and successfully shipped to the project site in Aktau, Kazakhstan via the Eurasian railway line in 28 days.The production period of this system coincided with the outbreak of the new crown epidemic in Xi’an, China, and the city was closed. All KOSUN employees eliminated various difficulties. With the strong support of the China Railway Xi’an Bureau and the assistance of various departments, a week before the Chinese Lunar New Year The entire system has been shipped.

Factory Workshop Production Scene

This system is ordered by an internationally renowned general contractor of environmental protection projects in Europe from our company through international bidding, and the final use location is in Aktau, Kazakhstan. Our company has undertaken a series of work such as technical design, manufacturing, inspection, transportation, and foreign technical support services for the project.

KOSUN designed and produced this set of oiled sludge treatment system which is applicable to the treatment of solid waste collection station containing oil, it is an oiled sludge treatment system with international advanced technology, the system has a treatment capacity of 60 tons/hour, mainly consisting of six modules such as pre-treatment skid, screening skid, centrifuge skid, loading/unloading conveying system, water treatment system and electrical control system. The main equipment included are: coarse analysis screen, high frequency vibrating screen, sand cleaner, mud cleaner, slurry pump, horizontal spiral centrifuge, water treatment system, automatic dosing device and PLC electrical control system, fully meeting the environmental protection treatment requirements of the customer site.

System arrives at the project site in Kazakhstan

KOSUN is a professional environmental protection equipment manufacturer integrating product development, production and sales. Among the various solid waste treatment products designed and produced by KOSUN, the oil sludge treatment system is mainly used in the energy production field, such as the drilling waste from oil drilling platforms in the oil development and refining process, the refining three mud and oil sludge treatment at the bottom of oil tanks in oil refineries and oil and gas storage and transportation stations, the system is specially designed to treat oil sludge with high viscosity and high oil content. After environmental protection treatment, it can achieve the goal of reducing, resourceizing and harmless disposal of solid waste and wastewater produced in the production process of energy industry, and realize the double harvest of economic benefits and environmental protection and emission reduction.

February 23, 2022February 23, 2022

Advanced sludge solid-liquid separation equipment

KOSUN advanced sludge solid-liquid separation equipment for river dredging solid-liquid separation mainly includes the following modules:

(1) Solid-liquid separation mud tank

The sludge solid-liquid separation is equipped with three sets of mud tanks, which are mainly used to install vibrating screen, de-sand cleaner, de-sludge cleaner and store the treated mud.

(2) Sludge dewatering centrifuge

Sludge dewatering centrifuge is a large drum centrifuge. It is mainly used in shield mud treatment, river dredging and other industries. Stable performance and so on. The centrifuge is also equipped with a circulating oil lubrication system, which can effectively reduce the bearing temperature and improve the bearing service life. It is also equipped with a temperature sensor, which can be monitored and controlled in the control system.

(3) Double-layer shale shaker

Double-layer shale shaker adopts double-layer treatment design. The upper and lower layers are screened twice with different sizes and meshes to obtain better screening effect.

(4) Sand removal cleaner

Desander cleaner is a combination of desander and shale shaker, with a compact structure. The desander adopts two 10-inch desander cyclones, which are used to deal with the solid phase of large particles treated by the shale shaker.

(5) Desilting cleaner

The desilter cleaner is composed of a shale shaker and a desilter. The desilter is composed of 12 4-inch desilter cyclones, which are mainly used to remove solid particles larger than 25 microns in the mud.

(6) Centrifugal pump

Centrifugal pump is mainly used to supply slurry to desander cleaner and deslimer cleaner in the system. The pump adopts mechanical seal, which has long service life and reliable performance.

(7) Screw conveyor

In order to facilitate the transportation of the treated solid phase mud. The design length of the screw conveyor is 12 feet, so that each section can be replaced as a standard unit.

February 7, 2022February 7, 2022

6 Types of Piling Mud Treatment Equipment

At present, regarding the mud treatment of construction piling projects, there are 6 main types of piling mud treatment equipment. According to the different requirements of piling projects, how can we correctly use a type of the 6 types of piling mud treatment equipment that suits our project requirements? Please let me introduce these 6 piling mud treatment equipment in detail for you, so that you can choose a piling mud treatment equipment that is really suitable for you according to your actual engineering situation!

1) Mud processing equipment of stacked screw centrifuge: the filter main is formed by the fixed ring and the floating ring stacked on each other, and the screw shaft runs through it.

body. Fully dewatered by gravity concentration and the internal pressure formed by the back pressure plate during the propulsion process of the sludge, the filtrate is discharged from the filter seam formed by the fixed ring and the movable ring, and the mud cake is discharged from the end of the dewatering section.

Centrifugal mud treatment equipment (decanter centrifuge) The working principle is that the equipment consists of a rotating drum and a screw conveyor with a hollow rotating shaft. The sludge is fed into the rotating drum by the hollow rotating shaft. thrown into the drum cavity. Due to the different specific gravity, solid-liquid separation is formed, and the sludge is transported to the conical end of the drum under the push of the screw conveyor and continuously discharged from the outlet; the liquid in the liquid ring layer is continuously “overflowed” and discharged to the outside of the drum. Gravity discharge.

Vacuum suction filter mud treatment equipment: due to the action of vacuum, the sludge immersed in the sludge storage tank is adsorbed on the filter cloth. When the drum rotates to the backflushing area, the adsorbed sludge is removed by the compressed air backflushing sludge filter cake.

Screening cyclone mud treatment equipment: the coarse screen of the vibrating screen first screens the large particles in the mud, and then enters the cyclone in the desander and the fine filtration process of the fine screen of the vibrating screen. The mud was successfully realized in the state of mud-water separation.

Plate and frame filter press mud treatment equipment: This equipment mainly uses the principle of plate and frame extrusion in a closed state, so that the water in the sludge is discharged through the filter cloth, and the sludge is trapped between the filter cloths. , in order to achieve mud dewatering.

6) Belt filter press mud treatment equipment: The working principle of this equipment is that it is formed by a series of rollers in an S shape, and the capillary water in the sludge layer is squeezed by the tension of the filter belt and the pressure of the rollers, so that the mud The water in the slurry is squeezed out to achieve the purpose of solidification and dehydration of the mud.

The above 6 types of piling mud treatment equipment can solve various problems of piling mud treatment for you very well. Regarding the selection of equipment for mud treatment in construction piling projects, consideration should be given to the efficient utilization of mud recycling, water reuse and turning waste into treasure, reducing pollution and harming the environment, water pollution, environmental protection and energy saving, convenient transportation and low cost, and efficient production. High dehydration rate, economical benefits, reduced construction cost, easy operation and maintenance, high degree of automation, long service life and many other factors.

January 26, 2022January 26, 2022

The subsea valve equipped in the mud tank is a vital equipment

The mud tank has been widely used and developed in the mud solids control system in oil drilling operations. The subsea valve equipped in the mud tank is a crucial equipment. The characteristics of several mud tank subsea valves are described below:

Advantages and characteristics of mud subsea valve: applied to the suction pipeline at the bottom of the mud tank to control the suction operation of the mud in each tank. The valve realizes the arrangement in the suction manifold tank and the operation of the tank surface. That is, the integration of the manifold and the mud tank is convenient for installation and transportation.

2.Advantages and characteristics of mud subsea valve structure: mud tank subsea valve (underflow valve) includes outer pipe, connecting rod, connecting pipe and lead screw. The connecting rod in the pipe is connected, the connecting rod is connected with the sealing rubber set at the inner bottom end of the outer pipe, the sealing rubber is sealed and fitted with the valve base, the valve base is a cone structure with an inclined surface on the inside, and the contact surface between the sealing rubber and the valve base is with the valve base For the slope with the same slope, the sealing rubber is fixed by the upper and lower two circular metal plates; the connection part between the outer tube and the outer cylinder of the lead screw is above the surface of the tank. The utility model improves the sealing performance of the subsea valve itself, and the conical surface sealing structure reduces the axial bearing capacity of the lifting screw to the sealing rubber by about 20%, thereby prolonging the service life of the rubber, and the connection part between the outer pipe and the outer cylinder of the screw is reduced by about 20%. Raised above the surface of the tank to meet the requirements of rapid maintenance. The operation realizes the control of the mud tank surface, which is labor-saving, convenient and practical, and the stability of the opening and closing state is good.

3.Advantages of working performance of mud tank subsea valve:

-Good sealing performance, reduce leakage and leakage.

-It is composed of 50 kinds of parts and components precisely.

– Flexible steering and convenient operation.

-Strong practicability, high cost performance, few vulnerable parts, and durable leather.

4. Advantages and characteristics of mud tank submarine valve specifications and dimensions: 6 inches, 8 inches, 10 inches, 12 inches, special bottom flow valve for high-efficiency mud tanks, and submarine valves. This specification of mud tank submarine valve I valve has the conventional requirements of mud tanks and can meet and improve mud tanks. Work efficiency in drilling operations.