Sandman^® Mission 2500 Supreme Centrifugal TurboShear Pump Impellers in Stainless Steel, the shear impeller for 8×6 and 6×5 model centrifugal pumps.

The Shear Impeller is mainly used for TurboShear System, The TurboShear System reduces the cost of mixing polymers and clays while improving mud properties. Shearing the polymers eliminates fish eyes and prevents polymer chaining (long strings), which cannot pass through shaker screens. Pre-hydrating clays improves viscosity per pound of clay, reduces water loss and improves filter cake properties.

The TurboShear System utilizes the following six methods for shearing:
• Fluid enters pump through the inlet ports and impacts the shear plate.
• Fluid passes through the teeth of the shear plate, which is turning at 2200 RPM.
• Fifty percent of the fluid is re-circulated through the four nozzle scoops and is jetted through 44 nozzles against the shear plate and incoming fluid.
• Liquid shear occurs at more than 5000 feet per minute. The tip speed of the turbine is more than 7000 feet per minute, causing a liquid shear to occur in addition to the mechanical shear.
• Shearing occurs as the fluid is jetted into the hydration tank through the mud gun at more than 6000 feet per minute.
• The product is sheared between the fluid leaving the nozzle and the venturi throat of the hopper.

Sandman^® TurboShear Pump Applications:
• High-shear mixing of bentonite, polymers, and clays.
• Pre-hydration before adding to active mud system.
• Oilfield drilling mud conditioning.
• Often part of a complete TurboShear package.