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

September 28, 2021September 28, 2021

The “blood” filter of drilling – Solids Control System

The mud solids control system is one of the most important parts of the whole drilling rig system, which is called the “blood” filter of drilling. A reasonable solids control system can effectively control the solids content of the drilling fluid and reduce the complexity of the drilling process and the probability of accidents. It is an important technical means to achieve safe, efficient and economical drilling.

Understand the performance and main characteristics of the solids control system, and select reasonable solids control equipment that meets the requirements according to the characteristics of the formation cuttings particles, the properties of the drilling fluid and other factors, so as to reduce the risk of accidents during the drilling construction process and improve the safety of drilling Drilling speed.

The solids control system is composed of shale shaker, desander, desilter, drilling fluid cleaner, centrifuge, drilling fluid tank and other equipment. Once a certain equipment fails or the overall matching is inappropriate, it will directly affect the performance of the entire drilling rig. Increase the risk of accidents during drilling construction. Therefore, the performance of the solids control system has important practical significance for drilling engineering.

KOSUN- China Solids Control Leader&Drilling Waste Management Expert
Email: sales2@adkosun.com
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August 31, 2021August 31, 2021

The main advantages of the slurry separation equipment of the bored pile

The main advantages of the slurry separation equipment of the bored pile:

1. Purify the mud, effectively control the performance index of the mud, sticking accidents, and make holes.

2. Realize mud recycling and save slurry-making materials. Significantly waste pulp outbound costs and pulp making costs.

3. The equipment effectively separates the soil and slag, and the efficiency of hole making.

4. The closed loop purification of mud and the influence of lower slag water content.

5. The double-layer screen is adopted, and the purification effect is nearly 50% higher than that of the single-layer screen. The operation is convenient, simple and reliable.

6. The processing efficiency is high. The higher the mud concentration, the shorter the single machine mud output time, which can be 15-30 minutes faster.

The mud purification device is suitable for pile foundation engineering (including rotary drilling, percussion drilling, etc.) using mud wall protection and circulating drilling technology, anti-seepage wall engineering (ground wall, double-wheel milling), mud-water balance shield construction and mud water Mud purification and recovery for pipe jacking construction. The reuse rate of waste mud avoids the random discharge of mud, helping customers with construction costs and environmentally friendly construction.

The slurry separation equipment for bored pile is mainly suitable for bridge pile foundations such as railways and highways, municipalities, subways, etc., continuous walls, shields, drilling rigs, pile drivers, oil drilling, construction piling mud separation and dewatering, stone mud dewatering, drilling mud dewatering, Tailings treatment, sand field mud, cave mud, mine mud treatment and other mud separation, etc.

August 31, 2021August 31, 2021

Treatment effect of five-level drilling fluid solids control system equipment

The drilling fluid solids control system is mainly used to remove harmful solid phases such as drill cuttings and recover useful solid phases such as barite. The solids control system is mainly composed of mud tanks, drilling fluid shale shakers, desanders, desilters, drilling fluid centrifuges and other major equipment, as well as auxiliary equipment such as mud pumps, slurry mixing devices, and vacuum degassers.

The mud tank is mainly used to store the mud and is the carrier of the solids control equipment. The mud purified by the solids control equipment enters the various chambers of the mud tank, and is processed according to different equipment, so as to achieve the removal of solid particles, recovery of barite, and purification of the mud.

The general processing flow of the solids control system: The drilling fluid shale shaker is the first-stage treatment equipment in the solids control system, which can remove the larger solid phase in the drilling fluid, and can remove solid particles above 74μm. The vacuum deaerator is used to remove the gas in the mud. It is the second and solid control device in the solids control system. It can quickly and effectively remove the gas contained in the mud. The deaerator is useful for restoring the mud density and preventing potential blowouts. It plays an important role in the occurrence of the danger of well collapse. The solids control equipment ranked at the third level is the drilling fluid desander. The mud treated by the vacuum degasser is transported into the desander through the sand pump. The drilling fluid desilter is used after the desander, which is used to remove the solid phase of 15~44μm to further ensure the performance of the drilling fluid.

In some solids control systems that need to save space, a desander, a desilter, and an underflow screen can be combined to form a drilling fluid cleaner, which can effectively remove solid particles larger than 15μm. In some uncomplicated drilling platforms, it can completely replace the desander and desilter. The final treatment equipment of the solids control system is a drilling fluid centrifuge, which is mainly used to remove solid particles smaller than 7μm and recover barite, with a recovery rate of 95-97%.

The solids control equipment is mainly used for complex well conditions and demanding well conditions. In the actual application process, according to the needs of drilling operations, one of the mud solids control processes can be used in one or more stages.

August 24, 2021August 24, 2021

Advantages of KOSUN pipeline dredging equipment and system

KOSUN pipeline dredging equipment and system has the following advantages:

1. Adequate purification of mud, control of mud index, sticking accidents, and hole making.

2. Effectively separate the soil ballast, make holes, and shorten the cleaning time.

3. Mud recycling, saving slurry materials and construction costs.

4. Closed mud circulation and lower ballast water content, pollution, and outbound transportation costs.

The mud cleaner based on the cyclone separation technology and the secondary shaker technology is the main equipment to realize the pipeline dredging equipment and system technology. Mud cleaner is also called mud purification device or mud desander.

The pipeline dredging equipment and system is produced under the premise of saving labor time, labor cost and water resources. It is mainly used for urban construction and the recycling and reuse of dredging mud from rivers, lakes and seas, which can achieve faster and better urban construction efficiency. It is an environmentally friendly product. The overall efficiency is improved, and it is the current choice for urban construction and dredging mud recovery treatment.

July 25, 2021July 25, 2021

The role of the Drilling Fluid Circulation System Supporting the drilling rig

The Drilling Fluid Circulation System can strengthen the solid phase control of the drilling fluid; through the rational use of solids control equipment such as shale shakers, de-sanders, desilters, cyclones and drilling fluid cleaners, it can reduce the dilution of drilling fluids and the amount of treatment agents.The closed drilling fluid circulation system can prevent the drilling fluid from landing and avoid leakage pollution.

The Drilling Fluid Circulation System for the drilling rig includes drilling pumps, surface manifolds, mud tanks, mud purification equipment, etc. The surface manifolds include high-pressure manifolds, risers, and hoses, and the mud circulation system equipment includes drilling fluid shakers and desanders, desilter, centrifuge, etc.

The drilling pump sucks the mud from the mud tank. The mud pressurized by the drilling pump passes through the high-pressure manifold, riser, and hose, enters the tap, goes down to the bottom of the well through the hollow drilling tool, and ejects from the water hole of the drill. The cuttings are carried back to the ground through the circular space between the wellbore and the drilling tool, and the mud returned from the bottom of the well is passed through various levels of mud purification equipment to remove the solid content, and then reused.

July 15, 2021July 15, 2021

The function of solids control system in the process of oil drilling

The solids control system in the oil drilling process mainly realizes the control and separation of the solid phase and the liquid phase of the drilling fluid, and recycles the drilling fluid, also known as the mud purification system. The solids control system is composed of several modular combined tanks to avoid mud settling at the bottom of the mud tank. A stirring device is designed on the mud tank. The tanks of the entire circulation system are independent and connected to each other to form a certain technological process meets the requirements of mud purification and meets the technical requirements of oil drilling construction.

Design multiple purification equipment in the solids control system. The supporting equipment contains shale shaker, mud agitator and desilter, etc., to reduce the discharge of waste cement slurry, avoid environmental pollution accidents, improve the safety and environmental protection of oil drilling construction, and achieve green drilling Construction needs.

For oil drilling operations, vertical wells are the simplest drilling task. However, directional wells and horizontal wells are difficult to drill and are complex drilling operations. The solids control system for drilling construction is to meet the technical requirements of drilling fluid solids control. Through the solids control equipment, the solid content in the drilling fluid is reasonably controlled, and the purification of the drilling fluid is strengthened to make its performance meet the technical requirements of complex drilling construction. Reduce the cost of drilling construction as much as possible, improve the quality of oil drilling construction, and meet the needs of oil and gas field exploration and development.

June 29, 2021June 29, 2021

KOSUN’s Complete Shield Slurry Solid-liquid Separation System

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. KOSUN can provide a complete set of shield slurry solid-liquid separation system. The main equipment includes: shale shaker, de-sander, desilter, bottom drying screen, slurry supply 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.

With the slurry shield and pipe jacking construction, the slurry is continuously purified through the slurry solid-liquid separation 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 high-speed large-drum slurry separator decanter centrifuge can play an important role. Through mechanical separation or mechanical and chemical flocculation and separation, the ultrafine particles in the shield slurry can be effectively separated, and the clean water can be discharged for recycling or meeting environmental protection discharge requirements.

June 28, 2021June 28, 2021

Commonly used Drilling Fluid Treatment Process

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 ）

June 15, 2021June 28, 2021

Theoretical Research and Manufacturing Technology of Drilling Fluid Solids Control Equipment

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.

May 16, 2021May 16, 2021

Precautions for operation of mud solids control equipment system

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.

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.