Viscosity · Field Test
Marsh Funnel & Measuring Cup
PZT-LAB-MF
The quickest viscosity indicator in the mud engineer's kit. Fluid is poured through the funnel and the time to fill the measuring cup is recorded in seconds — a single number that tracks trend rather than true rheology, which is exactly what makes it useful on a shift-by-shift basis. Slow to change means a stable system; a sudden drift signals contamination, dilution or solids loading long before the full rheology workup confirms it.
Applications
- Routine viscosity trending at the rig site
- Early detection of contamination or dilution
- Pre-screening before full rheology testing
- Mud laboratory quality control
- Petroleum engineering training and instruction