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Sometimes desander & desilter are combined as high efficient mud cleaner by dsmac zz
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Sometimes desander & desilter are combined as high efficient mud cleaner by DSMAC ZZ
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| Article Posted: 08/07/2013 |
| Article Views: 611 |
| Articles Written: 58 - MORE ARTICLES FROM THIS AUTHOR |
| Word Count: 340 |
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Sometimes desander & desilter are combined as high efficient mud cleaner |
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Buddhism,Business News,Business Opportunities
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Solids control is a technique used in drilling rig to separate the solids in the drilling fluids that are crushed by the drill bits and carried out of the well surface. Normally solid control system is consist of five stages, including mud tank, shale shaker, vacuum degasser, desander, desilter, centrifuge. Shale shaker is used to separate the big solids with diameter above 75µm, and 45~74µm for desander, and 15~44µm for desilter. Sometimes desander & desilter are combined as high efficient mud cleaner. When air enters into the drilling fluids, vacuum degasser is used to separate the air. If no air in the mud, the degasser would work as a big agitator. All these equipments are mounted on the top of the mud tank. After separating the solids, the clean mud would be pumped into the borehole again. The next innovation in solids control came when the shale shaker was introduced in the early 1930s for the oil industry. The shale shakers were derived from technology used in the mining industry. The shale shaker remains today the primary piece of solids control equipment utilized in the industry. Another machine borrowed from the mining industry in the 1930s was the cone classifier or hydrocyclone. The basic principle of this device involves the centripetal forces brought about by the high velocity of the drilling fluid spinning in the cone, forcing the larger and heavier solids to settle outward toward the cyclone wall and downward toward the underflow solids discharge. Together with the shale shaker, hydrocyclones have become an integral part of today’s solid control system. In an addition to shakers and hydrocyclones, the use of a high-speed centrifuge has significantly contributed to the ability of a drilling operation to reduce the amount of mud to be built and diesel/barite additions to maintain optimum low and high gravity solids proportions. Recent advances in solids control include the creation of a closed loop system which allows for increased environmental control and reduction in the potential for spills of drilling fluids. http://kosunservices.com/solids_control_equipment/desander.html
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