Development of a New Marsh Funnel Rheometer for non-Newtonian Oil-Field Fluids
Matt Balhoff, Larry Lake, Paul Bommer
Techniques for measurement of fluid rheological properties are important for field operations in the oil industry, but existing methods are relatively expensive and the results can be subjective. Marsh Funnels are popular quality-control tools used in the field. In the normal measurements, a single point is used to determine an average viscosity.
We have developed and used a new model to determine the rheological properties of oilfield fluids using data of fluid volume collected from a Marsh Funnel as a function of time. The funnel results for viscosity and shear-thinning index compare favorably to the values obtained from a laboratory rheometer. An objective, static method for determining yield stress is introduced, which has several advantages over dynamic, extrapolation techniques used for rheometer data.
Undergraduate researcher: Rebecca Lewis
Undergraduate researcher: Mark Weber
Undergraduate researcher: Jennifer Calderin