TBM Separation units, HDD Separation units, diaphragm wall separation units

June 27, 2022June 27, 2022

Drilling fluids in HDD solids control system solution

Drilling fluids in HDD solids control system solution: First of all we need to know what the setup is going to be. Which kind of pump volume, bit setup, jet bit or mud motor, rig size, drill pipe size and brand, tool joints size, and many more. Many people will give you advice, but most of the problems who are happening are hardware related. Fluid is pretty simple, but the problem is that many people have no idea about the hardware setup. The easiest way is to send us the bore profile, and further above information and we can give you an advice based on the hardware.

Good low end rheology 6 rpm reading needs to be 1 to 1.5 times the bit size, excellent bridging capabilities, no damaging, wall cake that is easily removed, Very low fluid loss, a minimal amount of solids and those solids preferentially CaCO3, the remainder of the density requirement can be the same brine as the completion.You can use sized barite and shaker screen it out when it comes back, but you will end up with some barite in your DIF fluid.

In HDD solids control system solution we don’t need to remove the wall cake, only in vertical water wells we need to remove the filter cake to get the well flowing. We do this with the use of water in combination with a thinner, who is breaking down the bentonite filter cake. With some extra energy with a swab tool the filter cake is being removed mechanical, when the swab tool comes down the thinner is forced into the bentonite platelets and the charge of the bentonite molecules is dissolving.

We are not drilling water wells. What we drill is oil well deeper more than 10,000 ft and even deeper. Why we drill this. We drill this for oil. Oil comes from reservoir. So care must be taken to Drill this 5 to 10 mtr interval. We drill the reservoir zone with solid free RDIF and in this Fluid we don’t add even pinch of bentonite. After drilling this interval is cleaned by various treatment to prove the true non damaging system. Reservoir gives us the Millions of oil and gas we should not drill with cheap fluid. We use best of best fluid most of time polymers and best of best technology for solids control system.

After passing 60 degrees you will absolutely get a cuttings bed in the bottom portion of the build the most effective way to remove this bed is to reciprocate the pipe while pumping a tandem sweep consisting of a thin light weight pill followed by a high density pill I do not recommend going over 2ppg the mud weight. Besides, all of our Brightway products making out of 316L stainless steel sheet for motor. I do recommend making the pills such a volume that the combined volume is the same density as the active volume thus not shocking the lateral stresses already in place on the well bore from the active mud. Agreed higher low end rheology is required here as I stated earlier in this thread.

KOSUN- China Solids Control Leader&Drilling Waste Management Expert
Email: sales2@adkosun.com
WhatsApp/Wechat:+86 18792396268
Contact person: Lily Wang
Online consulting:
http://www.kosun.com
http://www.kosuneco.com

May 30, 2022May 30, 2022

Mud-water separator for mud-water balance shield machine

There are two types of subway shield machines: earth pressure balance shield machine and mud-water balance shield machine. Among them, the earth pressure balance shield machine does not need to separate the mud and water. Its essence is to excavate the soil, and the mud and water balance shield machine needs to separate the mud and water.

The principle of the mud-water balance shield machine is to stir the relatively moist soil at the front end of the shield into mud, and then pump out the mud to form a tunnel. The extracted mud needs to be separated from mud and water for environmental protection, and the water in it needs to be reused.

The mud-water separation needs to use a mud-water separator. The mud-water separator is divided into three layers, and sieves out the stone clods of different particle sizes, and then performs pressure filtration to realize the separation of soil and water. In this way, the pollution caused by the direct discharge of muddy water is avoided, and the reuse of water is also realized, and the separated soil can also meet the standard of safe discharge, so that the waste residue can be properly treated. Compared with the earth pressure shield machine, the structure of the mud-water balance shield machine is more complicated, and the mud-water separator also occupies a large area, so it is relatively less used, but in the wetter strata, such as Shanghai and other coastal areas, generally only can use the mud water Balance shield machine.

May 30, 2022

The treatment process of the mud water treatment system of the shield machine

According to whether the excavation surface is closed, the shield machine can be divided into two types: closed type and open type. According to the principle of balancing the earth pressure and water pressure of the excavation surface, the closed shield machine can be divided into: earth pressure type and mud water type. According to the excavation method, the open shield machine is divided into: hand excavation, semi-mechanical excavation, and mechanical excavation.

In the shield machine, the mud-water separation treatment is required for the mud-water balance shield machine. The mud-water balance shield machine uses mud-water to resist the water pressure and earth pressure of the excavation surface to maintain the stability of the excavation surface, control the deformation of the excavation surface and the settlement of the foundation; form a weakly permeable mud film on the excavation surface to maintain the water pressure Effective on the excavation face. The effect of the mud-water separation is achieved by the mud-water treatment system related to the shield machine.

The mud pumped by the mud pipeline during the tunneling of the mud-water shield machine is transported to the mud-water separation station for separation:

Through the primary screening, most of the solid stones and mud blocks are separated;
After the first-stage separation, most of the clods above 3mm are separated, and the separated mud flows into the slurry collection tank, and then is pumped to the second-stage cyclone by the mud pump for separation;
The accuracy of the secondary separation is 70~74μm. After the secondary separation, the mud is pumped to the tertiary flow device again for separation ;
The separation accuracy of the three-stage cyclone is 20-25 μm. After the three-stage separation, the mud flows back to the pulping tank, and after pulping, it is transported to the knife excavation by the mud pump for placement.
After the waste slurry is filtered and separated by a filter press as required, the slurry particles larger than 5 μm in the slurry are basically separated, and then the sedimentation can meet the discharge requirements.

May 28, 2022May 28, 2022

HDD Mud Recovery System is used to purify mud during horizontal directional crossing

KOSUN HDD Mud Recovery System is developed, designed and produced by our company to meet the requirements of trenchless technology at home and abroad. It is used to purify the mud returned from the ground during the horizontal directional crossing process. The large particle size drill cuttings are separated by solid phase control equipment such as shale shaker and mud cleaner, and the required mud material is added by the mud mixing device, and the mixing and circulation are uniform to meet the performance requirements of reuse. The mud pump is pumped into the horizontal directional drilling system is recycled repeatedly. KOSUN HDD Mud Recovery System can significantly improve the efficiency of mud treatment, reduce the mud cost of horizontal directional drilling, and greatly improve the drilling speed.

Advantages of KOSUN HDD Mud Recovery System

Based on the technical experience of KOSUN in the solids control industry for more than 30 years, combined with in-depth market research, the designed mud recovery system has a reasonable structure, good processing technology and a wide range of applications.
The multi-functional integrated design can meet the functions of mud cleaning, recycling and reuse, mud configuration and storage, and at the same time greatly reduce the overall size of the tank system to meet the site and space requirements of horizontal directional drilling.
The electrical system is explosion-proof, dust-proof and rain-proof to ensure construction safety and quality.
The tank body is simple and compact in structure, light in weight, and the corridor and guardrail can be folded or disassembled for easy transportation and installation.
KOSUN Machinery has obtained API and ISO certification of American Petroleum Institute, EU CE certification, Russian export certification, and ISO14001 and ISO18001 certification of environmental safety system, which can meet the export standards of all countries in the world.

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.

April 28, 2022April 28, 2022

Composition of Geothermal Drilling Solids Control System

Geothermal energy is a new green and clean energy. With the increasing awareness of environmental protection and the shortage of energy, the rational development and utilization of geothermal resources has become more and more popular. The geothermal drilling solids control system came into being under the requirement of drilling environmental protection. According to the characteristics of geothermal drilling and the environmental protection requirements of geological drilling, KOSUN has developed a miniaturized multi-stage drilling fluid solids control and circulation system composed of mud shaker, mud cleaner, drilling fluid centrifuge, etc. Easy to relocate and other characteristics, it can realize the circulating treatment of drilling fluid without falling to the ground, and effectively remove harmful solid phase.

The drilling fluid centrifuge adopts the modular design of single motor structure, and the minimum separation particle size is 5μm. It can be matched with the frequency conversion control system to realize stepless speed regulation and adapt to the characteristics of different formations. The mud cleaner organically combines a hydrocyclone with a shale shaker, which can remove harmful solids from 20μm to 74μm. The drilling fluid solids control circulation system can match the solids control equipment according to different drilling requirements, which changes the traditional drilling fluid natural settlement treatment method, reduces the environmental pollution caused by the drilling fluid discharge, meets the needs of clean production, and meets the requirements of green exploration and green drilling. The liquid phase recycling and solid phase centralized recycling and processing in the cycle process meet the national requirements for energy conservation and emission reduction.

On the basis of the research on the geological drilling solid control system, in order to support the high-temperature geothermal clean energy exploration requirements, a skid-mounted modular five-stage solid control and drilling fluid cooling system has been formed, which can meet the needs of drilling fluid treatment and cooling in high temperature environments, and is a high-temperature environment. Geothermal (hot dry rock) drilling provides effective technical support.

April 27, 2022April 27, 2022

Advantages of skid-mounted and vehicle-mounted drilling solids control systems

Advantages of skid-mounted drilling solids control system:
The equipment composition of the skid-mounted drilling solids control system is simple, which reduces the input cost. The specific main equipment includes: shale shaker, vacuum degasser, sand desilter, centrifuge, mud tank and other equipment. These devices are integrated into an integral base, which is easy to install and move, and has the advantages of small footprint.

Advantages of vehicle-mounted drilling solids control system:
The vehicle-mounted drilling solids control system is mainly for the equipment system supporting the workover rig. Its advantages are that it is convenient to move, and the workover rig can serve multiple drilling projects at the same time, and can carry out mud purification work anytime and anywhere; it has an integrated design and is safe. It is reliable, compact and reasonable, occupies a small area, is convenient has the advantages of high usability.

The difference between skid-mounted drilling solids control system and vehicle-mounted drilling solids control system:
The skid-mounted drilling solids control system is suitable for various well depths and various drilling fluid requirements. Each individual system equipment can work independently or in combination. The vehicle-mounted drilling solids control system has all the functions of a conventional drilling fluid circulation tank, with a compact structure and novel design. It can directly drag the drilling fluid tank to a new well position under the traction of a tractor, so as to realize the rapid transportation of the drilling fluid solids control system and the positioning function.

The skid-mounted drilling solids control system and vehicle-mounted drilling solids control system produced by KOSUN can be applied to oil drilling rigs, workover rigs, natural gas drilling rigs, etc. For more drilling solids control systems, please visit: https://www.kosun.com/products/Solids-Control-System/

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.

March 28, 2022March 28, 2022

KOSUN Supplied a set of Sedimentation Tank Slime Treatment System for Shaanxi Coal Group

Recently, KOSUN successfully supplied a set of processing system for efficient cleaning of coal slime and slag for Shaanxi Coal Group, and sent it to the customer’s project site to complete the installation and commissioning. This system adopts a modular design concept, which is divided into a sedimentation tank cleaning and dehydration transfer module and a coal slag dehydration transfer module, which can be flexibly increased or decreased function module according to site needs.

KOSUN sedimentation tank slime treatment system effectively solves the problems of high solid content in the clear liquid in the sedimentation tank, difficult sewage treatment and high cost; cumbersome coal slime excavation and stacking process in the sedimentation tank, and time-consuming and laborious processing. The solid-phase moisture content after being treated by the KOSUN sedimentation tank slime system is less than 50%, which reduces the stacking volume and floor area, ensures that ordinary muck trucks do not cause secondary pollution when they are transported out, and reduces the amount of liquid entering the sewage treatment station. The total amount and solid content of the phase can be reduced, and the cost of liquid phase treatment can be reduced, not only can the coal slime originally discharged as waste be recycled, but also meet the requirements of national environmental protection and industry standards, and achieve the dual effect of improving economic benefits and environmental protection.

KOSUN has always provided you with solid-liquid separation solutions in the solid waste treatment industry. Customers are welcome to call for consultation!

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.

Solids control system, TBM slurry treatment plant, HDD mud recycling system, Drilling mud system-KOSUN

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