The G-force of a shaker is an empirical number useful in comparing different shakers. In the real world, performance is greater. Some of the factors included in proper cuttings conveyance include deck angle, amplitude, the actual shape of motion (whether true linear, orbital, or skewed elliptical, and the width of the ellipse.), damping forces, shaker screen mesh size and ratio, and other things that don’t come to mind right now. The best way to evaluate a shaker is to run it under real-world conditions, including the formation you are intended to separate. Balling clay reacts differently from sand and requires separate parameters to perform well.
Conventional shale shakers usually produce a g factor of less than 3; fine-screen shale shakers usually provide a g factor of between 4 and 6. Some shale shakers can provide as much as 8 g’s. Greater solids separation is possible with higher g factors, but they also generally shorten screen life. As noted previously (in the Linear Motion Shale Shakers subsection), only a portion of the energy transports the cuttings in the proper direction in unbalanced elliptical and circular vibration motion designs. The remainder of the energy is lost due to the peculiar shape of the screen bed orbit, as manifested by solids becoming nondirectional or traveling in the wrong direction on the screen surface. Linear motion and balanced elliptical designs provide positive conveyance of solids throughout the vibratory cycle because the motion is straight-line rather than elliptical or circular. Generally, the acceleration forces perpendicular to the screen surface are responsible for the liquid and solids passing through the screen, or the liquid capacity. The acceleration forces parallel to the screen surface are responsible for the solids transport, or the solids capacity.
Test G Force of Shale Shaker
For shaker manufacturers, it’s easy to test G force Number by a G Force machine, but it’s not convenient for the user to test a G force without this G Force machine. Here we recommend you a G Force card which can test a rough G force easily and very convenient. The procedure as bellow:
- Paste G Force card one shaker deck while the shaker is working.
- Check all different sizes of the circle on the card and find the right size which two circles just beside each other closely.
- Calculate G Force to follow the card way.