Patent ID: 8752414

Claim:
A sag performance measurement system comprising: a test container for holding a fluid mixture to be analyzed; a suction port on the test container, wherein the suction port is positioned to remove a sample of the fluid mixture from a first vertical location in the test container; a pump coupled to the suction port for circulating the fluid mixture from the test container through a circulation loop; a measurement device coupled to the circulation loop; and a return port on the test container, wherein the return port is positioned to return the sample of the fluid mixture to the test container at a second vertical location, wherein the first vertical location and the second vertical location are at substantially the same vertical location on the test container; wherein gravity changes a particle distribution of the fluid mixture with time; wherein the measurement device is operable to monitor the particle distribution of the fluid mixture; wherein the measurement device measures the sag performance of the fluid mixture; and wherein the fluid mixture flowing through the circulation loop passes through the measurement device before returning to the test container through the return port.