Nowadays, the commonly used drilling fluid treatment process is as follows: firstly pump out into the liquid-gas separator in the drilling, degas in the liquid-gas separator, then enter the drilling fluid shale shaker to treat the larger particles of drill cuttings, and then enter the secondary solids control equipment mud cleaner, and the drilling fluid that meets the standard mesh is passed into the mud tank through the vacuum deaerator for use. According to different requirements, there may be mixing equipment in the middle. The processed drilling fluid can be stored in the mud tank for drilling use.
Drilling fluid plays an important role in oil drilling and horizontal directional crossing. The quality of drilling fluid directly affects the progress of oil and gas field development and the quality of oil and gas fields. The processing of drilling fluid affects the quality of the mud.（ drilling fluid treatment process ）
In recent years, the theoretical research and manufacturing technology level of domestic drilling fluid solids control equipment has been greatly developed, especially in theoretical research on the working principle of shale shaker and cyclone separator, etc., which have reached a very high level.
The performance and quality of drilling fluid solids control equipment is the key to solids control technology. The drilling fluid solids control system mainly includes three parts: drilling fluid circulation tank, drilling fluid purification treatment equipment and electrical control equipment. Among them, drilling fluid purification treatment equipment mainly includes shale shakers, desanders, desilters, degasser, centrifuges, sand pumps, mud agitators and mixers, etc. It can also be equipped with drill cuttings recovery and waste liquid treatment device in environmentally sensitive areas.
KOSUN drilling fluid solids control equipment has the features of small footprint, high efficiency and long life. The solids control equipment system consists of 4 shale shakers and two dryers (namely drying shaker). The four shale shaker and dryers are connected in parallel. The drilling fluid returned from the well is distributed to the shale shaker by the drilling fluid distributor. The shale shaker and dryer are used for processing and recover the leached liquid and discharge the dried particles. The dryer is actually a fine-mesh shale shaker with a 10° tilt on the sieve frame to reduce liquid loss.
For the operation of the mud solids control system, the mud solids control equipment must be thoroughly and carefully inspected before drilling. Among them, great attention should be paid to the equipment of the drilling fluid shale shaker. The specifications of the screen should be as complete as possible, and multi-standard sieves should be used. The net can reduce the burden of the subsequent solid control equipment and improve the efficiency of solid control.
mud solids control equipment
At the same time, pay attention to all kinds of manifolds. The gate and the main body of the mud solids control equipment must be disassembled for inspection and maintenance. The sand pump is all unloaded until the blades are exposed. Reinstallation and pressure test can be performed after confirming that there is no blockage or damage in each link to ensure that the solids control equipment is at its best In good condition; all kinds of reagents, balances, supply tanks and other corresponding equipments and instruments for mud testing and analysis should be available. After drilling, the solids control equipment must be operated continuously regardless of whether it is drilled or not to ensure that harmful solid phases are removed to the greatest extent. The solid content of the mud does not change during the drilling process, and the performance of the mud will not deteriorate without chemical pollution. The low solid content is beneficial to protecting oil and gas reservoirs, increasing the ROP, reducing mud costs and even drilling costs.
After the completion of the well, all the mud solids control equipment shall be completely disassembled and cleaned, and the key parts shall be coated with oil for protection; each solids control equipment shall be sealed up after installation of spray paint.
A complete set of Shield Mud Treatment System, the main equipment includes: shale shaker, de-sander, desilter, bottom drying shaker, slurry pump, slurry circulation tank, etc. Slurry shield and pipe jacking are often constructed in cities, and the user’s construction site usually requires small equipment footprint and high treatment efficiency. KOSUN Shield Mud Treatment System is specially designed for this purpose. The design concept is to arrange the equipment as high as possible. In addition, in order to meet the diversified operation requirements of customers, KOSUN Shield Mud Treatment System is composed of modular assembly, which can be assembled into a complete set of large-capacity systems, or it can be split and used as a small-capacity system. In addition, it also meets the needs of users for quick disassembly and assembly during mobile construction.
A large amount of mud containing sand and rocks will be produced during the construction of slurry shield and pipe jacking. In order to protect the environment and save water resources, it is necessary to carry out solid-liquid separation treatment on the shield mud.
With the mud-water shield and pipe jacking construction, the mud is continuously purified through the Shield Mud Solid-liquid Separation Treatment System, and ultrafine particles will continue to accumulate, which will eventually affect the shield and pipe jacking construction. Moreover, after the construction of the shield and the pipe jacking is completed, the waste mud also needs to be dehydrated. At this time, the decanter centrifuge can play an important role. Through mechanical separation or mechanical and chemical flocculation and separation, the ultrafine particles in the shield mud can be effectively separated, and clean water can be discharged for recycling or meeting environmental protection discharge requirements.
Shield construction technology is one of the non-excavation methods. It is a fully mechanized construction method in the subsurface excavation method. It pushes the shield machine into the ground and supports the surrounding rocks through the shield shell and segments. To prevent collapse into the tunnel, at the same time use a cutting device to excavate the soil in front of the excavation, transport it out of the tunnel by an excavating machine, press the jack at the rear to push it in, and assemble precast concrete segments to form a tunnel A mechanized construction method for structures. The slurry circulation between the shield machine and the Slurry Treatment Plant is realized by the slurry conveying system. The soil and sand excavated by the shield machine enters the cutting silo, and the agitated high-density mud water is pumped by the mud pump to the shield Slurry Treatment Plant. The system, after the mud processing system is processed, is pumped back to the excavation surface, so that the mud is recycled in the equipment.
Shield Construction Slurry Treatment Plant
Design highlights of KOSUN shield mud-water separation equipment
1. High degree of automation: the feeding, separating, unloading and other processes at work are continuously and automatically carried out under high-speed operation, and the automatic control of centrifugation and separation is realized by programmable control.
2. Working performance: The differential used in the mud dewatering machine is a two-stage involute planetary gear differential and a cycloid pin wheel differential that rotates. The working temperature is low, the transmission torque is large, and the performance is reliable. The design of the anti-blocking device of the screw pusher can make the power larger, which has a great effect on the torque of the equipment itself, so that the work performance is better.
3. Strong craftsmanship: The belt filter press adopts double motors and double frequency conversion energy feedback differential speed for flexible stepless adjustment and online intelligent control, and can adjust the speed and differential speed at any time according to the changes of materials. In order to achieve the energy-saving effect.
4. Low noise: The cover adopts a double-layer design with sound insulation layer, and the cover and bearing seat adopt a new type of sealing structure, coupled with precise dynamic balance, so that the noise is significantly reduced.
5. Large processing capacity: The new centrifuge has a large processing capacity due to structural improvements such as the deepening of the liquid pool, the direct rotating drum, and the clear phase guide hole on the spiral.
6. Reliable performance: The sludge dewatering machine is equipped with torque protection, power control and other protections, which can effectively eliminate or damage the machine caused by sudden failures. All transmissions are equipped with protective covers.
7. Good working site: The separation of materials by Slurry Treatment Plant is carried out under closed conditions to ensure that the operation site is clean and pollution-free, and the production is clean and hygienic to achieve clean production.
KOSUN- China Solids Control Leader&Drilling Waste Management Expert
KOSUN can produce 350HP, 450HP, 550HP, 650HP, 750HP mud circulation system and 1000HP, 1500HP, 2000HP land skid-mounted drilling rig mud circulation system. KOSUN skid-mounted oil-based mud treatment system consists of solid control equipment such as linear shale shaker, vacuum degasser, desander, desilter, horizontal spiral sedimentation centrifuge and mud tank. Its functional components are integrated in an integral base, and production and assembly are completed in the factory. It has the advantages of convenient installation, easy migration, and small footprint.
Drilling from the surface to the completion of the drilling can be roughly divided into three layers, namely the surface soil layer, sand layer and rock layer. Therefore, there are water, mud, sand, rock salt, and barite powder and oil for blowout prevention in the drilling circulating mud. That is to say, the circulating mud fluid contains mud in the early stage, sand in the middle stage, and rock salt and barite powder and oil in the later stage. If drilling in an oilfield or water injection area, the mud fluid will contain various injection agents due to the mixing of interlayer water injection fluid. Therefore, it is very necessary to use drilling mud fluid without landing environmental protection treatment equipment. Drilling circulating mud fluid will pollute soil and water quality, affect the growth of animals and plants, and endanger human health.
The land-based skid-mounted oil-based mud treatment system for oil and gas fields manufactured by KOSUN adopts a multi-functional design, so that the entire solids control system can meet the requirements of different well depths and various drilling muds. Each treatment device can operate independently, It can also be operated jointly to make the oil-based drilling mud meet the safety discharge standard after treatment, realize the mud treated at different stages of drilling and realize the purpose of saving land, saving energy and reducing consumption, and improving efficiency.
In recent years, with the rapid progress of national urbanization, the construction projects of subways, large-scale water conservancy projects, and underground pipe corridors have developed vigorously. Shield construction technology and underground diaphragm wall construction technology have been widely used. Slurry will be generated during the construction of the above-mentioned projects. The slurry treatment plan mainly adopts two modes of “outbound” and “simple separation”, neither of which can meet the national requirements for environmental protection and clean construction and engineering energy-saving requirements. At present, KOSUN can provide large-scale Slurry Separation Station that meet the shield.
Slurry Separation Station
Slurry Separation Station is a special equipment for processing the mud and dregs generated by the tunneling of the shield machine during the construction of the subway shield. It is a necessary equipment for the mud-water balance tunneling equipment. The design and matching of the Slurry Separation Station is mainly determined according to the mud pump flow rate of the shield machine. Since the Slurry Separation Station is a modular design, it can be combined to build a mud station according to the different mud flow rates generated by each project.
KOSUN environmental Slurry Separation Station is mainly used in municipal projects, such as river dredging, underground pipe corridors, black and odorous water treatment, urban subway construction, etc., as well as large infrastructure projects such as water conservancy and hydropower projects, urban rail and high-speed rail tunnel projects, Undersea tunnel engineering, etc.
KOSUN- China Solids Control Leader&Drilling Waste Management Expert Email: sales2@adkosun.com Wechat:+86 18792396268 Contact person: Lily Wang Online consulting: http://www.kosun.com http://www.kosuneco.com
Drilling Mud solid control system is an indispensable part of modern drilling. It can guarantee the normal circulation of drilling mud in the process of drilling and stable performance, the product is mainly composed of explosion-proof power, lighting power distribution and control equipment, mud gas separator, drilling fluid shale shaker, vacuum degasser, desander, mud cleaner, horizontal centrifuge, sand pump, mud agitator, shear pumps, mixed dosing hopper, circulating tank and other solids control equipment, can be effective to deal with drilling fluid and reserves, in order to satisfy the drilling work. KOSUN can produce all kinds of drilling fluid circulating tank according to user’s requirement.
Drilling Mud solid control system is an important part of drilling machine. Its function is to prepare and reserve the mud, remove the solid particles contained in the mud returned from the bottom of the well, in order to maintain the good performance of the mud to the mud pump, into the well, so as to improve the drilling speed, ensure the well depth quality, reduce mechanical wear, reduce drilling costs, reduce the occurrence of downhole accidents.
All parts of the Drilling Mud solid control system are connected by extension joints, rubber rings, steel pipes or rubber pipes. Each part of the walkway, ladder, guardrail can be carried by the mud tank itself, hand in hand disassembly, handling is very convenient.
During the construction of Shenzhen Metro Line 14, KOSUN Environmental Protection Shield TBM Muck Disposal and Treatment System has been used to separate sand, fine sand and soil from the tailings, dehydrate and dry them, reduce transportation and reuse resources. Completely achieve zero mud discharge, meet the requirements of environmental protection. The Shield TBM Muck Disposal and Treatment System adopts modular design, which consists of coarse shale shaker, sand washer, fine shale shaker, sand desander cyclone, slurry pump and manifold, filter press and other components. The system structure is simple, which can meet the transportation and rapid disassembly.
Shield TBM Muck Disposal and Treatment
In urban subway construction, shield tunneling has become one of the main choices of tunnel construction. The large amount of waste muck generated by shield tunneling has brought challenges to the urban environment in many aspects, and the dehydration, transportation, landfill and other processes of the waste muck will have a great adverse impact on the environment. As a kind of urban mineral resources, the muck will occupy a large amount of land resources for landfill and absorption. Meanwhile, the slope of the heap has the risk of landslide. If the muck is recycled as synchronous grouting material, ecological brick raw material, subgrade filler, etc., it will effectively improve the ecological and environmental protection function of subway construction. However, at present, the utilization rate of shield muck is very limited in China, so it needs to be promoted and popularized.
KOSUN environmental protectionShield TBM Muck Disposal and Treatment System deliverying Muck by the belt conveyor system from the depths of the tunnel to the ground sediment separation system of feed hopper, the final separation sand transport by belt machine to trucking, lift the graded the residue dehydration separation and drying, realize the inorganic raw materials, water reuse, recycling waste muck is achieved, also it also produced a good economic benefit, added new “magic weapon” for the green construction and urban infrastructure.
KOSUN- China Solids Control Leader&Drilling Waste Management Expert Email: sales2@adkosun.com Wechat:+86 18792396268 Contact person: Lily Wang Online consulting: http://www.kosun.com http://www.kosuneco.com
Desander plant, desander system,desander unit main components includes: shale shaker with coarse and fine screens, storage tank of the coarse screen, cyclone with cyclone feeder pump for removing fine particles from the suspension, dewatering screens for abstracting further water from the solids dis-charged by the cyclone.
Desander plant
Desander plant, desander system,desander unit is used to remove soil partcles in drilling muds and support slurries used in foundation engineering. They can be either water-bentonite, water-polymere, or water-cement and bentonite suspensions.
As KOSUN Manufacture shale shakers, desanders, desilters, decanter centrifuges. So KOSUN is able to provide complete solutions for TBM Desander plant, desander system,desander unit project. The shale shaker for separation coarse solids, the desander for separation sands, the desilter for separation silts, the mechanical centrifuge for separation fine solids.The chemically enhanced technology with decanter centrifuge for separation ultra fine solids to discharge water.
KOSUN is the experienced Desander plant, desander system,desander unit Manufacturer and Exporter in China. and has many years experience of equipment design, production and application. KOSUN Desander plant, desander system,desander unit have further applications in Bored Pile, Diaphragm Walls, Water well drilling, Microtunneling projects, Mining industry.
KOSUN- China Solids Control Leader&Drilling Waste Management Expert Email: sales2@adkosun.com Wechat:+86 18792396268 Contact person: Lily Wang Online consulting: http://www.kosun.com http://www.kosuneco.com
