The ability to measure individual flow rates in multiphase flow without complete separation provides many advantages for oil and gas operations. Efforts to develop a low-cost multiphase meter have generally been based around the use of a partial separation device such as a compact cyclonic separator and low-cost single-phase meters. Coriolis meters are desirable for use in these systems due to their high accuracy, large rangeability and their ability to make a mass and density measurement However, the meter's stability and operability has generally been considered poor when free gas is present in the liquid phase. A new all-digital approach to Coriolis metering claims to be able to perform real-time measurement under multiphase flow conditions. This Coriolis technology, if proven to work under limited multiphase flow conditions, could satisfy the requirements for use as part of a partial separation or no separation metering techniques, depending on the flow conditions.
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