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How to reduce the amount of solid residue on the shale shaker screen?

Views: 0     Author: Site Editor     Publish Time: 2025-11-28      Origin: Site

        In solids control systems,shale shaker screens are the first stage of solid-liquid separation.Residual solids on the screen ("clogging/sand accumulation") reduce screen efficiency, increase pump consumption, and increase overall screen wear. To effectively reduce residue, it is necessary to optimize five aspects: flow distribution, screen selection,shaker parameters, cleaning and maintenance,and on-site operation procedures, through a closed-loop optimization of "man, machine, material, and method."

        Ⅰ. Balanced feeding and stable flow rate

        Uneven or sudden increases in feed can cause localized overload and instantaneous blockage of the screen. A flow divider or guide plate should be installed at the shaker screen inlet to ensure uniform distribution of the slurry on the screen surface; simultaneously, valves should be used in conjunction with bypasses to prevent flow surges. On-site monitoring of the feed flow rate should also be maintained to prevent sudden changes in pump flow and ensure a stable slurry supply.

        Ⅱ. Reasonable selection and combination of screens

        The shaker mesh size and layer size directly affect residue and permeability. The finest acceptable mesh should be selected based on the drilling stage and mud properties. For easily clogged conditions, a "composite/multi-layer" combination can be used: a coarse upper layer for load bearing and a fine lower layer for interception, improving both interception efficiency and extending service life. Regular replacement and avoiding the use of damaged mesh are also crucial.

        Ⅲ. Optimize shaker parameters and screen angle

        G-force (acceleration),amplitude,and screen angle together determine the particle speed on the shaker replacement screen surface. For viscous or fine-particle slurries, appropriately increasing the amplitude or using an elliptical/circular shaker mode can reduce adhesion; however, excessively high G-forces will accelerate wear, and a balance should be struck between efficiency and lifespan. Optimal parameters are generally determined through on-site commissioning and test cutting data.

        Ⅳ. Standardized cleaning and screen protection procedures

        Regular cleaning is fundamental to preventing blind holes and residue buildup. Use high-pressure water washing at appropriate angles and pressures, and avoid scraping the mesh surface with hard tools. After cleaning, allow it to dry thoroughly and store it in order to prevent deformation or corrosion. In addition, a rapid mesh cleaning solution should be available on-site to deal with short-term blockages.

        Ⅴ. Supporting processes and chemical auxiliaries

        In clay or colloid-containing slurries, the appropriate use of dispersants or slurry conditioners can reduce particle flocculation tendency and improve rheology, thereby reducing screen clogging. However, chemical addition must be carried out under the support of rheological testing to avoid affecting downstream treatment or environmental compliance.

        Yuanpeng offers a variety of screen specifications, screen combination solutions, and on-site commissioning support to help customers achieve quantifiable results in reducing screen residue, improving dewatering efficiency, and reducing operation and maintenance costs. For engineering case studies or parameter matching advice, please contact us for one-on-one technical support.

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