Patent ID: 7992427

Claim:
A method of determining one or more bulk theological properties of a friction reduction system comprising: a) providing a device comprising an outer chamber, an impeller disposed adjacent the bottom of the outer chamber, an inner chamber fixedly disposed within the outer chamber and in fluid communication with the outer chamber, and a rotatable bob disposed within the inner chamber; b) loading the friction reduction system into the device; c) circulating the friction reduction system with the impeller so as to circulate the friction reduction system into the inner chamber; d) shearing the friction reduction system with the bob as the friction reduction system flows from the outer chamber to the inner chamber; e) collecting torque data from one or more torque sensors coupled to the impeller and/or the bob to determine one or more bulk rheological properties of the friction reduction system; and f) changing the rotational speed of the impeller and repeating steps (c) through (d) at least once.