The trailer-mounted mud solidification control system is a movable equipment used to treat drilling mud. It works by using a series of solid control equipment to classify the mud generated during the drilling process and remove the solid-phase particles in it to maintain the stable performance of the mud. Firstly, the mud returned from the wellhead flows into the mud tank, where the larger solid-phase particles are separated after screening by a vibrating screen. Then, the mud enters the desander and desilter, where centrifugal force is used to separate out the smaller sand and mud particles. Finally, the mud after sand and mud removal treatment enters the centrifuge to further separate the finer particles and the weighting agent, so that the mud reaches a good performance index and can continue to be recycled for drilling operations.
一.Structural composition of trailer mud solid control system
1.Mud treatment system
Vibrating screen: used to separate the larger solid phase particles in the mud.
Desander: using the principle of centrifugal force to separate the sand particles with smaller particle size in the mud. Generally consists of a number of cyclones of different specifications, according to the sand content of the slurry and processing requirements, you can choose a combination of cyclones with different diameters.
Desludger: Its working principle is similar to that of desander, which is mainly used to remove finer mud particles in the slurry. The cyclone diameter of the desilter is usually smaller than that of the desander, enabling the separation of finer solid-phase particles.
Centrifuges: are used to further separate fine solid-phase particles from the liquid phase in the slurry and to improve the purification quality of the slurry. Centrifuge has higher separation precision.
2.Slurry storage and circulation system
Mud tank: used for storing mud, usually consists of several tanks, including sedimentation tank, circulation tank and so on.
Mud pump: It is used to pump the mud out of the mud tank and transfer it to the drill pipe of the drilling rig to achieve the circulation of mud. Mud pump usually adopts centrifugal pump or screw pump, featuring large flow rate and high head.
Water supply pipeline: provide clean water for the mud treatment system, used for diluting mud, flushing equipment and so on.
3.Power and control system
Power unit: provide power for the whole solid control system, usually using diesel engine or electric motor. Diesel engine has the characteristics of large power and strong adaptability, which is suitable for the occasions without power supply in the field; electric motor has the advantages of smooth operation, low noise and convenient maintenance, which is suitable for the places with power supply.
Control cabinet: It is used to control the operation of each equipment of the solid control system, including starting, stopping, speed regulation and other operations.
4.Carrying and moving system
Trailer frame: made of high-strength steel, with sufficient strength and rigidity, able to bear the weight of the entire fixed control system. The trailer frame is equipped with suspension system, brake system and tyres to ensure the stability and safety of the vehicle.
Traction device: It is used to connect the trailer frame and the towing vehicle to realise the movement of the fixed control system. The towing device usually adopts ball head towing or saddle towing, which has the characteristics of firm connection and flexible steering.
二.Advantages of trailer-type mud solid control system
1.High efficiency: The trailer-mounted mud solid control system integrates a variety of advanced solid control equipment, which can carry out multi-stage and high-efficiency separation and processing of mud. From large rock debris to tiny colloidal particles, all can be effectively removed by the corresponding equipment, so that the purification effect of the mud is significantly improved. Compared with traditional mud treatment methods, such as simple sedimentation, the trailer-mounted mud solid control system is able to achieve a higher degree of mud purification in a shorter period of time, which greatly improves the recycling rate of mud and reduces the amount of new mud preparation, thus improving the efficiency of drilling operations.
2.Strong mobility:the trailer design is a significant advantage of the system. The entire cementing system is mounted on a trailer, which can be easily moved to different job sites by means of a tractor. This makes it particularly suitable for drilling projects that require frequent changes of work sites, such as field drilling in geological surveys, horizontal directional traversing works in different sections, and so on. Compared with fixed mud handling equipment, the trailer-mounted mud solid control system eliminates the need for complex equipment installation and commissioning at each job site, greatly reducing project preparation time and improving the flexibility and economy of equipment use.
3.Good environmental protection: In today’s increasingly stringent environmental protection requirements, trailer-mounted mud solid control system has outstanding performance in environmental protection. By effectively separating and treating the solid particles in the mud, it reduces the amount of waste mud produced and reduces the risk of mud pollution to soil, water and other environments. The purified mud can be recycled, which reduces the consumption of new mud materials and is in line with the concept of sustainable development. At the same time, the solid waste generated during the operation of the system can be centrally collected and treated, further reducing the impact on the environment. For example, in drilling operations in some ecologically fragile areas, the application of the trailer mud solid control system can effectively protect the local ecological environment and avoid ecological damage caused by improper mud discharge.
4.Wide adaptability:the trailer-mounted mud solid control system can adapt to different types of drilling operations and mud properties. Whether it is drilling operations in oil and gas drilling, geological exploration drilling, or piling works, horizontal directional traversing, etc., the system can be reasonably configured and adjusted according to specific working conditions and mud characteristics. For muds with different densities, viscosities and solid-phase contents, good treatment results can be achieved by selecting suitable solid-control equipment and adjusting equipment parameters. For example, when dealing with high-viscosity mud, the effective separation of mud can be ensured by increasing the power of the mixer and adjusting the rotational speed of the centrifuge; when dealing with mud containing a large number of sand particles, a larger specification desander can be selected and its working pressure can be increased appropriately to improve the efficiency of desanding.
5.High cost-effectiveness: Although the initial investment of the trailer-type mud solid control system is relatively high, it has significant cost-effectiveness in the long run. By increasing the recycling rate of mud, the procurement cost of new mud materials is reduced; the efficient processing capacity shortens the drilling operation time and reduces the labour cost and equipment rental cost; at the same time, by reducing the risk of pollution to the environment, it avoids high fines and treatment costs that may be incurred as a result of environmental pollution. In addition, the high degree of automation of the system reduces the amount of manual operations, lowers equipment failures and maintenance costs caused by human factors, and improves the service life and operational stability of the equipment, further enhancing the overall cost-effectiveness.
三.Application Scenarios of Trailer Mounted Mud Solid Control System
1.Oil and gas exploration and development: In the process of oil and gas drilling, the quality of mud is crucial to the safety and efficiency of drilling operations. The trailer-mounted mud solid control system can effectively remove solid impurities such as drill cuttings and sand particles in the mud, maintain the good performance of the mud, and ensure the stability of the well wall, the cooling of the drill bit and the carrying of drill cuttings in the drilling process. On offshore oil drilling platforms, due to limited space and high mobility requirements for equipment, the advantages of the trailer-mounted mud solid control system are given full play. It can be easily moved and installed on the platform to provide efficient mud handling services for drilling operations at different locations. Meanwhile, in the development of onshore oil and gas fields, for some blocks that require frequent relocation of rigs, the trailer-mounted mud cementing system can also respond quickly to provide timely and reliable mud handling for new drilling operations.
2.Geological survey: Geological survey work usually requires drilling in the field under different terrain and geological conditions. The mobility of a trailer-mounted mud consolidation system makes it ideal for geological survey projects. It can follow the drilling equipment to each survey site quickly, and dispose of the mud generated during the drilling process in a timely manner. The trailer design facilitates the transport and installation of the equipment in mountainous areas, forests and other inaccessible areas. Moreover, the requirements for mud treatment in geological exploration often vary according to the purpose of exploration and stratigraphic conditions, and the trailer-mounted mud solid control system can flexibly adjust the equipment configuration and operating parameters according to the specific conditions to meet the needs of different geological exploration projects, realise effective recycling of mud, reduce the cost of exploration, and at the same time reduce the impact on the environment, which is in line with the concept of green exploration.
3.Horizontal directional traversing: Horizontal directional traversing technology is widely used in oil and gas pipelines crossing rivers, lakes, traffic arteries, railway junctions and other obstacles and important areas. In horizontal directional traversing construction, mud should not only play the role of carrying drill cuttings and stabilising the hole wall, but also ensure that it can circulate smoothly in the complex underground environment. Trailer-mounted mud solid control system can efficiently purify the mud returned during the traversing process, remove the harmful solid phases, such as drill cuttings, etc., and restore the performance of the mud, so that it can continuously meet the requirements of the traversing process. Especially in some large-scale horizontal directional traversing projects with large mud dosage and high treatment requirements, the trailer-mounted mud solid control system can be modularly combined according to the scale of the project to improve the treatment capacity and ensure the smooth progress of the construction. At the same time, its environmental performance also helps to reduce the impact of mud discharge on the surrounding environment, in line with the environmental requirements of engineering construction.
4.Piling works: In construction piling works, mud is used to protect the hole wall, suspend the drilling slag and cool the drill bit. The amount of mud generated during pile foundation construction is large, and if it is not handled properly, it will pollute the construction site and the surrounding environment. The trailer-mounted mud solid control system can quickly process the mud at the construction site, separating the solid particles from the mud so that the purified mud can be recycled. This not only reduces the emission of mud and pollution to the environment, but also saves the cost of mud materials. Moreover, as the construction sites of pile foundation projects are usually compact, the small footprint and strong mobility of the trailer-mounted mud solid control system can be well adapted to the conditions of the construction site, facilitating the arrangement and movement of the equipment and improving the construction efficiency.
5.Other fields: In addition to the above main application scenarios, the trailer-mounted slurry consolidation and control system also has a wide range of applications in some other fields. For example, in the shaft drilling, diaphragm wall construction, shield construction and other projects in mining, it is necessary to deal with the mud effectively. Trailer mud solid control system can provide targeted mud treatment solutions according to the characteristics and requirements of these projects, to ensure the smooth progress of the project, and at the same time to achieve a win-win situation in terms of environmental protection and economic benefits.
As an efficient, environmentally friendly and highly mobile mud handling equipment, trailer-mounted mud solid control system plays an important role in many fields. With the continuous progress of technology and changing application requirements, the trailer-mounted mud solid control system will continue to develop in the direction of intelligence, high efficiency and energy saving, miniaturisation and integration, environmental protection performance enhancement and customised services, etc., to provide drilling operations in various industries with better quality and more reliable mud treatment solutions, and to promote the sustainable development of the industry.
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