Multiphase flow meter

A method for measuring flow rates and volumetric fractions of a multiphase fluid, the method comprising:

• installing a measurement unit on a pipe transporting the multiphase fluid, wherein the measurement unit comprises:
• a cylindrical structure submersed in the multiphase fluid;
• a first magnet and a second magnet connected to opposite ends of the cylindrical structure;
• a first coil and a second coil wound around an outer circumferential surface of the pipe in locations corresponding to the first magnet and the second magnet, respectively;
• obtaining resonant frequency measurements using the cylindrical structure and a computer processor;
• obtaining nuclear magnetic resonance measurements using the first magnet, the second magnet, the first coil, the second coil, and the computer processor;
• and
• measuring the flow rates and the volumetric fractions of the multiphase fluid using the resonant frequency measurements, the nuclear magnetic resonance measurements, and the computer processor.