Rheometer

Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity

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73 5432, G01N 1114

Patent

active

055467911

ABSTRACT:
There is provided a rheometer, comprising a cup for a fluid to be measured, a concentric rotor and stator arrangement, and a circuit for circulating the fluid which includes a pump for providing in pulsatile, non-laminar flow in the cup. By using the pump to provide both a turbulent and pulsating flow, particulate matter can be maintained in suspension and flow induced through the measuring system while any rheology effect the pumping system has on the fluid is introduced independently of rheology effects caused by the measuring system itself. Thus the pumping can be continued while the measurement is being made.

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Knoll SK "Wall slip evaluation in steady shear viscosity measurements of hydraulic fracturing fluids", SPE/DOE 13904, May 19-22, 1985, Denver, Colorado, USA.
Blaszczyk J and Petela R "Application of a modified rotary rheometer to the investigation of slurries", Rheologica Acta, 25:521-526 (1986).

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