Shale shale shale shaker for drilling solid control

Drilling fluid shale shaker is a primary solid control equipment for drilling mud purification system,
Imported vibrating motor is used, which is suitable for single, double or triple oil drilling fluid purification, and drilling fluid shale shaker can also be used for underflow shale shaker of mud cleaner. Drilling fluid shale shaker has high vibration intensity, large screening area, adjustable screen box angle, compact structure and excellent performance. Drilling fluid shale shaker is widely used in oil drilling, trenchless horizontal directional crossing, coalbed methane drilling, shale gas drilling, river sludge environmental protection and other mud purification treatment fields

Shape and type
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Drilling fluid shale shaker is a conventional equipment used to separate solid phase from circulating drilling fluid. There are many shapes and types of shale shakers, including:
one
Drilling fluid flows on square or rectangular sieve cloth;
two
The drilling fluid flows along the center of the rotary, non vibrating cylindrical screen cloth;
three
The drilling fluid flows from the center to the periphery on the round screen cloth.
Although vibrating screens of other shapes have been tried, they have not been commercialized. Most shale shakers use rectangular screen cloth. Large solid particles are removed at the lower end of the vibration. Small solid particles and drilling fluid flow through the screen surface and enter the circulating system again. The solid with drilling fluid larger than 74 microns is unfavorable to the performance of drilling fluid. API200 mesh vibrating screen is formulated on this basis. Only 3% of the weighting materials that meet the API classification criteria have a particle size greater than 74 microns. At this size, most barite will be removed from drilling fluid, which will seriously affect the performance of drilling fluid and drilling cost.

structure
Drilling fluid shale shaker is mainly composed of base, screen box, screen, mud logging tank, exciting motor, damping spring, control switch, regulating device, etc.
1. Screen box: The screen box is made of soft (hard) hooked screen mesh and frame screen mesh, which are tightened with bolts or wedge-shaped block structure, so that the tension is safe and reliable and the screen mesh is not easily damaged. This knot is reliable, easy to operate and simple to maintain.
2. Mud logging unit: structure optimization design is carried out with reference to foreign famous brands. The mud buffer effect is good and the service life of screen mesh is extended.
3. Power unit: It is composed of shock excitation beam and two brand explosion-proof vibration motors, with low vibration noise, stable operation effect, long service life and convenient installation and maintenance.
4. Damping device: high strength composite rubber structure, good stability, good damping effect and low noise.
5. Adjusting device: It adopts the adjusting structure under the lead screw, with high adjusting precision, good stability and simple and convenient operation.
6. Control device: use brand explosion-proof or non explosion-proof control device, with good safety performance, strong depressurization startup protection performance and long service life.

working principle
1. The drilling fluid shale shaker is the primary solid control equipment in the drilling mud solid phase control system, which handles 74 μ Mud solid particles above m.
2. Drilling fluid shale shaker is based on the linear motion, circular motion or translation elliptical motion track generated by the vibration motor through the excitation beam under the action of eccentric block force. The angle between the vertical line of the two motors and the screen is an angle or a straight line, so that the rotation direction of the two excitation motors is opposite, and the excitation force generated by their mutual operation is offset in the X direction, and the excitation force is zero. In the Y direction, the exciting forces of the two motors are superposed to drive the whole upper and lower screen boxes to move back and forth along the Y axis, and at the same time, the mud on the screen surface is thrown up along the Y axis, and then moves forward when it falls freely. In this way, the mud is constantly thrown up and down to make the mud move forward. The mud liquid leaks into the mud tank through the screen, and some solid particles in the mud larger than the mesh holes are screened out, So as to play the role of mud purification.