Imaging of oil-water flow patterns by Electrical Capacitance Tomography

The local volume fractions revealed by inter-electrode capacitance measurements and gamma densitometry were in reasonable agreement. These same capacitances showed consistency with negligible standard deviation, while the standard deviation of the gamma densitometer readings were much higher. However, it is possible to determine flow patterns based on a combination of inter-electrode capacitance measurements, together with volume fraction variations.