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Performance impact and dehydration process of oilfield drilling mud centrifuge

Nov 29, 2018

In the process of separating the suspension from the oilfield drilling mud centrifuge, the rotation of the drum causes the settling force in the device to be many times larger than the gravity. In theory, the ability of an oilfield drilling mud centrifuge to separate solid phase particles from a liquid mixture is controlled by the characteristics of the imported mixture. The results calculated by Stokes's law can theoretically predict the ability of the centrifuge to separate the imported slurry. The particle size and density of the solid phase particles and the density and particle size of the liquid phase can affect the separation capacity of the centrifuge.


In addition, in practical applications, the solid particle size and density increase, the liquid phase density decreases, and the liquidus viscosity decreases. The ability of the oilfield drilling mud centrifuge to separate the solid phase will increase. Other factors, such as particle shape and void fraction, also affect the separation effect. From a mechanical and practical point of view, settling time, centrifugal force, torque characteristics, and inlet mud flow rate for variables that have a large impact on centrifuge separation.


During the dewatering of the oilfield drilling mud centrifuge, the sludge and flocculant are thoroughly mixed in the flocculation mixing tank through the mixer, and the silk flower is concentrated by gravity in the concentration section, and many filtrates are discharged from the filter joint of the concentration section. The concentrated sludge is continuously pushed forward in the direction in which the screw shaft rotates, and is dehydrated under the effect of the internal pressure formed by the back pressure plate.