The main types of shale shaker ?>

The main types of shale shaker

The skill level of shale shaker mainly reflects on handing ability working stability, the length of useful lifespan and operating flexibility. The handing ability of shale shaker is related to the constitution of shale shaker, motion trail, vibration frequency, vibration intensity, screen area and screen size. For matching the shale shaker with the rig, the maximum displacement of the drill pump and the drilling cuttings quantity generated in the drilling process must be considered.

The types of shale shaker

In general, depends on the motion trail of screen frame, shale shaker can be group into four types: circle scree, ordinary elliptic screen, linear screen and balanced elliptic screen.

Ordinary elliptic screen

The centroid of the screen case there is a fixed excitation device. It requires the screen case to tilt an angle, by using gravity, it can clean up the sand constrainedly, and avoid the tendency of retrojecting of the sand. As a result, the slant of screen case improved in the mobile function of sand assuredly, but the handing capacity of drilling fluid has been reduced by the shale shaker. This is the mainly shortcoming of the ordinary elliptic screen.

Linear screen

The two pieces of main shafts which have two eccentric blocks rotate synchronously and contraorbitally for producing linear vibration. Because the direction of linear screen vibrating is constant, the strangle particles come off difficultly, as a result ,the phenomenon which called “sieve paste” will appear, the effective open area will be reduced, and make handing capacity decreased, however when the sieve mesh number increased , the sieve paste phenomenon will be more seriously. Thus, when the linear screen uses super fine mesh, it will not content the demand of drilling fluid consumption.

Balanced elliptic screen

It’s a new screen type developed in recent years. The balanced elliptic screen combines the basic advantages of the circle screen and linear screen. The handing capacity of balanced elliptic screen is more than the linear screen by 20-30%. It’s a more advanced drilling fluid shale shaker, and represents the current development direction of drilling fluid shale shaker.

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