Rolling ball Viscometer LERBV1000

The rolling ball viscometer determines the viscosity of samples collected either down hole or at the surface. It uses the rolling ball principle where the travel time of a piston is used to obtain viscosity data, which are derived from correlation with curves of fluids with known viscosities. The RBV 1000 consists of a calibrated barrel equipped with two laser detectors at each end and a latch at its upper end.

The latch holds and releases the piston while the lasers detect its departure and arrival, thereby allowing the travel time to be determined. A homogeneous, constant temperature profile is ensured by virtue of a heating mantle wrapped around the barrel. A computer system acquires the falling time and calculates the viscosity value.