The Krohne M-Phase 5000 is a magnetic resonance multiphase flowmeter that is used in applications in the upstream oil and gas industry. The M-Phase 5000 is able to measure oil, gas and water flow rates using a single measurement principle at the same time. The Krohne M-Phase 5000 is designed to operate in harsh environments and can be applied for well testing, flow assurance and allocation purposes. It replaces the need for test separators, and is an ideal alternative to conventional multiphase flowmeters that apply radioactive sources as well as to separation based multiphase flowmeters.
In the magnetic resonance measurement, the hydrogen atoms attached to oil, gas and water molecules are magnetised and subsequently excited by radio frequency pulses. The hydrogen atoms respond to the pulses and send back echoes which are recorded. The amplitude of the echoes and the rate at which they decay is used to calculate the flow rates. The difference in magnetic resonance properties allows making a distinction between the flow rates of oil, gas and water.
The M-Phase 5000 features comprehensive inline fluid characterisation, which in effect removes the need to take samples and eliminates the sample handling processes associated with it. It features a large dynamic range in flow rates (over 1:60) with a high degree of accuracy. The M-Phase 5000 automatically compensates for changes in process conditions such as a change in the salinity of water. The M-PHASE 5000 is also able to handle a wide range of flow regimes. Its full bore design virtually eliminates pressure drops. The meter comes with Modbus and Ethernet interfaces as well as IECEx and ATEX Zone 1 certifications.