How to prevent slurry running with shale shaker The phenomenon of running slurry often appears when use shale shaker. The phenomenon is mainly related to the factors such as high solids phase content, high mud viscosity and dispersion of drilling cuttings and so on. The small vibration force and screen area of shale shaker and high screen mesh number also lead to slurry running.The phenomenon also related to the inlet direction and position of the shale shaker equipment during field installation. Hebei BZ solids control CO.,LTD. summed up several points and analyzed phenomenon of slurry running step by step and gave reasonable suggestions to customers. 1: The mesh number of shale shaker screen is not reasonable, the finer screen cannot be used in shallow well section, the screen with larger screen hole should be used at the beginning of drilling, and should be changed to finer screen with the increase of drilling depth gradually. 2: The formation conditions and mud conditions affect the handing capacity of the shale shaker,If the addition of drug does not dissolve and paste on the screen,serious slurry running will occur.The drug should be fully dissolved before use, and screen with a larger hole should be used instead of finer screen.What is more, when drilling into a loose sandstone or quicksand layer, it is necessary to test several different shale shaker screen to reduce screen blocking phenomenon. Because the sand particles tend to get stuck in the screen hole and cause the screen plugging phenomenon. 3. Before the shale shaker works, check whether the motor is turning correctly. If the steering is wrong, please replace any two phase lines which is in the incoming power supply of the electric control box.Error method one: two shale shaker motors rotate inwards, although they can also exclude drilling cuttings outwards, but the speed is slow;Error method two: two motors rotate in the same direction, the vibration force is very small, basically can not discharge sand and deal with mud. 4: Check whether the fluid flow distribution on the screen frame is reasonable when the shale shaker works. The screen surface on both sides of shale shaker with hook-side screen structure is lower than the middle, so the mud is easy to flow to both sides and run away. Make sure the mud enters the screen frame from the middle.At this point, two options are available.One is to adjust the front spring seat, and appropriately increase the Angle of the front of the screen box;The second is to adjust the position of the overturning plate of the extension tank to control the flow distribution. 5: check the screen quality, in the process of drilling fluid shale shaker work general for the upper screen mesh, the stress of the layer and lower layer between the two layers together, if stress layer when tightened on the bottom of the screen, screen layer not taut, greatly reduce drilling cuttings of throwing force at work, the capacity of mud is small, and not smooth sieve and eliminate cuttings. North drilling solids control is a professional manufacturer of drilling fluid vibrating screen, our company welcomes customers at home and abroad to visit the factory, consultation tel: 0316-5163735
