Purpose and Classification of mud agitator

Mud agitator is one of the solid control equipment of drilling fluid tank, which is mainly used for mixing drilling fluid, preventing solid phase particles of drilling fluid from deposition in the tank circulation system, and making the circulating drilling fluid have stable performance and even mixing. The most commonly used forms of mud agitator in solid control equipment are as follows:

mud agitator
mud agitator

Mud agitator with gear transmission structure: the advantages are high transmission efficiency, but the disadvantages are large volume and inconvenient maintenance. Gear drive is also divided into direct drive and belt drive. The reducer adopts single-stage worm reducer with small structure size, light weight, stable transmission, low noise and large transmission power.

Worm gear transmission structure mud agitator: the current is still worm gear worm transmission. Worm gear and worm drive. Worm gear and worm drive is widely used in mud agitator because of its simple structure, high speed ratio and high reliability. The mud agitators imported from the United States are almost all worm gear direct drive. Worm gear and worm belt transmission structure, although its large volume, but has the characteristics of soft transmission, to protect the motor overload is very good.

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 desander and desilter

Drilling mud 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. KOSUN Desander is used as the 2nd stage of solids control for drilling fluids, which makes separations between 45 and 75 μm. KOSUN Desilter is used as the 3rd stage of solids control for drilling mud, which makes separations between 15 and 45 μm.

There are some main difference between Drilling mud desander and desilter as following:

1.They are in the different solids control stage. Desander is the second stage solids control equipment, desilter is in the thrid stage;

2.They have different separation size. Desander make separations between 45 and 74 μm, desilter separate solids between 15 and 45 μm;

3.They have different capacity. Desander is 113 m³/h, desilter is 11 m³/h;

4.They have different hydrocyclone size. Desander uses 10″ and 12″ hydrocyclones, desilter uses 4″ hydrocyclone.

Desander is installed on top of the mud tank following shale shaker and vacuum degasser, but before the desilter. Desilter is installed on top of the mud tank following Desander. They also can be installed completely: in this case, they are installed on one deck shaker and called mud cleaner or mud conditioner. Desander removes the abrasive solids from drilling mud which cannot be removed by shale shakers.

KOSUN is professional manufacturer for complete sets of drilling mud recycle system. The conventional equipment like shale shaker, mud cleaner, desander and desilter, vacuum degasser, decanter centrifuge, mud agitator, mud gun, centrifugal pump, screw pump, 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

KOSUN screw conveyor is designed in accordance with strict safety standards.

Basic principle and characteristics of the horizontal screw conveyor: horizontal screw conveyor is a rotating screw will be pushed forward and transport along the casing of materials in transmission work, is a new kind of in the bottom of the bin and to break the arch and the uniform feeding, its broken arch performance is strong, for all kinds of powdery and granular materials can achieve broken arch and continuous transmission function, and effectively eliminate different particle size and proportion of mixed material in bending phenomenon occurs in the bunker, thus effectively avoid material wriggle through the earth cabin, and to material status as running water.The horizontal screw conveyor has many features. The screw conveyor is convenient for multi-point loading and unloading. The mixing, stirring and cooling functions can be completed simultaneously in the conveying process.

KOSUN is a professional manufacturer of screw conveyors integrating research, design, production, installation and after-sales service. The company in a responsible attitude to customers, the design and manufacture of products in strict accordance with the testing standards for quality testing. Over the years, with advanced technology, excellent quality, by the majority of customers at home and abroad praise.

KOSUN screw conveyor is designed in accordance with strict safety standards, and its u-shaped groove has a grille shield to prevent foreign objects from entering the groove, ensuring the safety of the operation of the staff. The bottom frame protects and supports the conveyor, ensuring the structural stability of the equipment.

Features and advantages of KOSUN screw conveyor:

1. High efficiency transmission: compact structure, stepless speed regulation, different processing capacity, can meet the needs of different drilling conditions;

2. Flexibility of the structure: each section is 12 feet and consists of several sections. The total length can be flexibly determined according to the equipment layout at the drilling site;

3. There is a grille cover on the u-shaped groove to prevent foreign bodies from entering the groove, ensuring the operation safety of the staff;

4. The spiral blade of the screw conveyor is made of anti-corrosion and wear-resistant material to extend its service life;

5. Advanced and reasonable design, combined with advanced manufacturing technology and perfect quality assurance system, make it has small volume, large load bearing torque, low noise, oil leakage and other significant advantages.

Sludge dewatering and capacity reduction is not only an important part of sludge treatment.

Sludge dewatering and capacity reduction is not only an important part of sludge treatment, but also the most difficult part to realize. Domestic sewage treatment plants can only reduce the sludge moisture content to about 80% by mechanical dehydration, and a large amount of water brings great difficulties to the follow-up treatment of sludge. If the water is removed by means of heat evaporation, the huge energy consumption makes the sludge treatment cost high.

The reason why sludge dewatering and capacity reduction is difficult is that the sludge obtained in the sewage treatment process has high hydrophilicity, which makes it difficult for the water in the sludge to be liquid to achieve low-cost and efficient separation, resulting in the dewatering sludge difficult to achieve the economic and environmental unity of the treatment goal.

The sludge produced by sewage treatment has a high water content. Due to the combination of water and sludge particles, mechanical method to remove the sludge has a certain limit. The content of organic matter in the sludge, the proportion of ash, especially the addition of flocculant, has an important impact on the final solid content.Mud cake is still high in moisture content and fluid property, so it is difficult to dispose of it and the cost is still high, so it is necessary to further reduce the amount.At this point, in addition to natural air drying, only through the input of heat to form evaporation, can achieve a large reduction.The process of using heat to dry is called heat drying.

Trenchless construction is a horizontal drilling project used in construction or infrastructure projects.

Trenchless construction is a horizontal drilling project used in construction or infrastructure projects. In the process of trenchless construction, drilling mud is needed to ensure the performance of trenchless drill. To make drilling mud reusable and to reduce drilling costs, contractors often use mud recovery systems to recover drilling mud.

KOSUN has decades of experience in the design and manufacture of mud recovery systems, especially in trenchless projects with a variety of compact mud systems available to customers. According to users’ different requirements and site area limits, KOSUN can provide mud recovery devices with different configurations to meet the requirements of different working conditions. There are usually two types of mud purification systems for trenchless construction: one is the desander swirl purification system and the other is the self-supporting mud recovery system.

Sand removal swirling purification system covers a small area and is economical. The system is a combination of a cyclone and a shaker, which are mounted on a small collection tank. The desander swirl system is a two-stage separation device, whose function is to remove coarse particles in drilling mud. The desander swirl system is mainly used in engineering that can accept large diameter solid drilling mud, such as piling.

The mud recovery system independently developed by KOSUN can be divided into four separation systems: coarse cuttings separation, sand separation, mud separation and ultrafine solid separation. The higher mud recovery system has a larger mud tank with more room to store purified drilling mud and more crown space for more separation and purification equipment. When the tank surface space is enough, the customer can also choose a centrifuge to reduce the ultra-fine solid phase in the drilling mud, to avoid the enrichment of ultra-fine solid phase in the drilling mud.

The elevated diesel tank is installed with explosion-proof floating-ball level switch.

The elevated diesel tank is installed with explosion-proof floating-ball level switch; KOSUN 40+5m³ elevated diesel tank is the special-purpose oil tank to provide and store diesel for power machines (diesel engine, generator, etc.) of drilling crew. therefore the centrifugal oil pump can deliver the oil in oil storage tank to elevated oil tank automatically. In case of low oil level, the explosion-proof level switch opens, the oil pump starts automatically and oil transportation begins; in case of high oil level, the explosion-proof level switch closes, the oil pump closes automatically, and oil transportation ends. In order to prevent failure of explosion-proof level switch, the equipment is especially installed with oil return pipe. In such a way, the oil will not overflow from the tank even under failure of level switch.

When elevated oil tank is lifted up, the oil pressure rises. The oil in tank will be transported to equipment requiring diesel at drilling site from three channels through filter and flowmeter, and it can also flow back to the oil storage tank. The oil consumed by equipment can be read out from pointer of flowmeter.

After the elevated diesel tank is installed, check to ensure that all valves are in corresponding states. Park the refueling truck beside the oil tank, connect the outlet opening with oil feeding buffer tank or inlet opening before opening it and choose to start the 50CYZ-20 centrifugal oil pump; pay attention to the rotation direction of the oil pump. After opening or closing corresponding ball valves, and starting the oil pump, the oil flows into oil storage tank through filter, flowmeter, pipeline, ball valve and centrifugal oil pump. With liquid surface rising, the column of magnetic reversible level meter display changes from white to red. The junction of white and red colors indicates the liquid level of oil storage tank.

Produced in the process of oil and gas exploration and development, drilling fluid waste amount is large.

Produced in the process of oil and gas exploration and development, drilling fluid waste amount is large, due to containing various products at the same time, the concentration of pollutant composition complex, high, high chromaticity, chemical oxygen demand (cod), the traditional approach is difficult to adapt to the new environmental protection requirements, an urgent need to accelerate drilling waste management efficient treatment and new technology, new technology and new equipment development, application, change the traditional waste drilling fluid end management ideas, set up the drilling pollution “wellsite closed loop” process control and new concept of clean production and complete the engineering application, Realize the new drilling clean production mode of “well standardization, green source, process reduction, end resource and equipment integration”.

Based on this, we look forward to the next trend: first, we should strengthen the exploration and field application of environmental protection drilling fluid, develop intelligent environmental protection drilling fluid technology, and reduce the difficulty and cost of end treatment and disposal of drilling fluid waste by greening the source. Ii. Improve the selective removal technology of micro and poor quality solid phase in drilling fluid, upgrade the treatment device, formulate the group’s unified drilling cleaner production standards, well site design standards and performance standards of recycled drilling fluid, and maximize the recovery and utilization of waste drilling fluid and waste water through process reduction. Iii. Establish the technical specifications for the classification, classification, temporary storage, treatment and disposal of drilling fluid wastes. According to different well depths, different drilling fluid systems and different lithologies, adopt corresponding treatment and comprehensive utilization technologies respectively, and realize the transformation of drilling fluid wastes into treasure through end-resource recovery. Iv. For drilling fluid wastes with different physical properties and different pollutant contents, different modular treatment units are selected to realize the modularization and standardization of drilling fluid waste treatment equipment through the integration of equipment.

KOSUN SP series shear pump is a centrifugal pump designed for quick configuration of drilling mud.

KOSUN SP series shear pump is a centrifugal pump designed for quick configuration of drilling mud.

SP series shear pump can effectively mix and fully hydrate the added materials in the drilling fluid, save the use of mud materials, shorten the mud configuration time, provide good mud performance for the drilling process, is an ideal drilling fluid solid control equipment. The degree of dispersion and hydration of bentonite particles in water depends on: electrolyte content, time, temperature, number and concentration of surface replaceable cations in water. Other things being equal, SP series shear pumps can save bentonite by more than 30%.

SP series shear pumps allow the polymer to be diluted and hydrated as soon as possible. The high molecular weight of the polymer used in the mud is high, and it is not easy to hydrate directly, so the polymer needs to be pre-cut. The shear pump provides high shear efficiency and speeds up the dilution and hydration of the polymer, thus improving the quality and efficiency of the mud distribution.

Final disposal and utilization of sludgeⅠ

After sludge is treated and disposed by a series of methods, there are generally the following final disposal methods for the dried sludge:

1. Sanitary landfill

Sanitary landfill is a traditional and mature sludge disposal method with low investment requirements and good effect, and can also increase part of urban construction land. As for the dry sludge, it is generally selected to be buried together with the municipal daily household garbage through solid waste landfill, or special sludge landfill can be set up for it. However, the current sludge treatment technology is not very perfect, some harmful substances in the sludge may not be removed clean, after landfill may have a certain potential threat to the surrounding environment.

2. Incineration

Incineration is the most thorough way of disposal. Because sludge contains a lot of organic matter and fibrous lignin, it generates a lot of heat after incineration, and the residue is less, and does not need sterilizing treatment. The energy generated during incineration can be used to generate electricity, and the ashes after incineration can be used to make cement, etc. Incineration of sludge is a very effective way to dispose of sludge.

Oil sludge modulation in China — the status of mechanical separation technology.

Although many advanced technologies in foreign countries have been successful, but because of the conditions in all aspects of our country are greatly limited, so that these efficient technologies cannot be fully applied in our country. Our country can only draw lessons from its essence, innovate the sludge treatment technology which is suitable for our country present situation.

Oil sludge modulation in China — the status of mechanical separation technology

In the domestic refinery oily sludge modulation system, commonly used flocculants include polymer inorganic flocculants such as polyaluminium chloride, polyferric sulfate and polymer organic flocculants such as high degree of polymerization of non-ion, cation, anionic polyacrylamide and other long chain macromolecules. Most units use cationic organic flocculant or organic flocculant combined with lime before mechanical dehydration to improve the flocculation and dehydration effect. The pre-treatment of sludge in refineries in China generally adopts mechanical dewatering process, mainly with belt filter press and centrifuge. The moisture content of dehydrated sludge is 75%~80%. According to the results of various experiments, the sludge modulation-mechanical dewatering process has developed quite well among the various treatment processes for oily sludge.