IS 18877 : Part 2 : 2024 Lab Instruments for CBM Evaluation - Code of Practice - Part 2 Marsh Funnel and Graduated Cup

1 SCOPE

This standard covers a marsh funnel which is a marsh cone with a particular orifice and diameter and with a fixed capacity. The graduated cup is also a fixed volume cup for measurement of funnel viscosity. It is a simple device for measurement of indicating viscosity of drilling fluid/or any viscous liquid for quality check, laboratory analysis and design purpose. Marsh funnel is a useful and utility device in drilling operation for quick quality analysis of drilling fluid. Funnel viscosity is the indicating viscosity of a fluid and it is measured by observing the time it takes a known volume of liquid to flow from a cone through a short tube.