Brookfield DV3T Rheometer - Manual (Page 88)

Brookfield Engineering Labs., Inc. Page 88 Manual No. M13-2100
An Example of the Bingham Model at Work
A manufacturer of drilling fluid applies the
Bingham Model to ensure the quality of their
product. Results from a recent batch, shown
in Figure VII-3, showed that the yield stress
and plastic viscosity were both below the
pass/fail criteria, which would cause the fluid
to insufficiently hold-up the cuttings. The
shipment was cancelled and the root-cause
of the problem was identified.
Drilling Fluid
Plastic Viscosity (
h
) = 6621 cP
Yield Stress (τ
o
) = 166.4 dynes/cm 2