The vibrating screen is the key equipment in the solid control system, but also the first level of solid control system processing equipment, its work directly affects the control effect of the whole solid control system. During the drilling process, the drilling fluid with a large number of cuttings is returned from the well, and the role of the shaker is to separate the cuttings from the drilling fluid so that the cleaner drilling fluid enters the later stages of separation equipment.
Working principle of mud vibrating screen
The vibration force generated by the vibration motor drives the sieve bed to make linear, circular, elliptical or translational elliptical motion. The screen will play a role in filtering and screening, screening out solids such as large particles of drill cuttings, and the clean mud with fine particles will fall into the vibrating screen silo to wait for the next level of treatment. The separated large solid particles (usually more than 74 microns) are transported to the outside of the sieve bed under excitation force and discharged to the outside of the tank.
Scope of application of mud shaker
In land and offshore oil and gas drilling/CBM excavation/trenchless directional crossing/piling engineering/waste sewage, mud treatment and other projects, the mud and liquid to be treated for primary or secondary or tertiary solid control treatment. In short, it is the primary treatment of mud and solid-liquid mixtures suitable for various environments.
Factors affecting the performance of mud shaker
Drilling depth, drilling fluid performance, land environment, comprehensive drilling environment/conditions, screen selection, comprehensive performance of the object to be treated, etc.
Structural components of mud shaker
It mainly includes base, frame, screen bed, logging tank, vibration beam, vibration motor, control cabinet, screen box Angle adjustment device, screen mesh, fixed screen mesh device, etc.
Installation instructions for mud shaker
Usually the drilling fluid shaker is mounted on the first mud tank. There will be positioning blocks to help the user identify the location and distance, and the top of the tank where the vibrating screen is located will have openings the size of the sieve bed to receive the treated clean mud. The mud tank should be placed on a flat and clean ground to minimize the influence of the external environment on the performance of the shaker. In the process of transportation or transfer, it is not appropriate to install the screen on the screen box to avoid damage to the screen and affect the use of collision. The transport lock device should always be closed, and the transport lock device should be removed before use after installation to ensure the normal operation of the vibrating screen. During the installation process, read the installation instructions and follow the corresponding restrictions to complete the installation.
Safe operation of mud shakers
Make sure the transport lock is removed before use. It is not possible to repair, move, or even disassemble the motor during the use of the shaker. Follow the safety operation instructions and warning signs on the equipment to operate and maintain the equipment.
Maintenance of mud shaker
- According to the safety warning of the vibration motor, the motor should be regularly and reasonably maintained, such as filling lubricating oil;
- In the process of use, it is necessary to make careful observation and inspection of the screen. The damaged screen and the completely damaged screen should be repaired or replaced in time;
- After each stop using, it is necessary to clean the vibrating screen and screen, so that the screen can have a long life;
- Regular and planned inspection and maintenance of the overall situation of the vibrating screen, so that the use of the vibrating screen can achieve the best effect.
5, the use of drilling mud vibrating screen precautions: vibrating screen in the process of use, there may be running or screening blocking phenomenon, then we have to adjust the Angle of the screen box, but should not be too high or low.
- Timely observation and monitoring to ensure that the selected screen is suitable for a certain stage of mud. When the vibrating screen does not move according to the predetermined trajectory, there may be a problem with the vibration motor line. For example, if the single motor is running or the installation direction is wrong, the motor or line should be checked at this time to restore it to normal.