Drilling Fluids Testing
The six speed rotational viscometer the API mud procedure is written around.
The sample sits between a rotating outer sleeve and a suspended bob, and the torque the fluid transmits to the bob is read off a dial. Six rotational speeds, 600, 300, 200, 100, 6 and 3 rpm, give the readings the procedure asks for, and plastic viscosity, yield point and gel strength come straight out of them.
It is the instrument a mud report is built on. The readings feed directly into the figures a drilling programme is controlled by, so the spring, the dial and the geometry have to stay inside tolerance, which is what calibration is for. We supply the viscometer, hold the spare bobs, sleeves and springs, and recalibrate the one already on the bench.
- What it measures
- Plastic viscosity, yield point and gel strength
- How it works
- Concentric cylinder, six speeds from 600 down to 3 rpm
- Where it is used
- Water based and oil based mud control, on the rig and in the laboratory
Other instruments in this range
All Fann instruments
Viscometer Model 35 Accessories
The wear parts and the alternative geometries that keep a Model 35 in service.
RheoVADR Rheometer
An automated rheometer for the low shear end, where a fluid either suspends solids or does not.
Sand Content Test Kit
A five minute check on the abrasive fraction a mud is carrying.