SIMULTANEOUS MEASURING METHOD FOR BOTH VOLUMETRIC FLOW-RATES OF AIR-WATER MIXTURE USING A TURBINE FLOWMETER

A turbine flowmeter is employed in this study in connection with offsh ore oil field development, in order to measure simultaneously both the volumetric flow rates of air-water two-phase mixture. Though a conven tional turbine flowmeter is generally used to measure the single-phase volumetric flow rare by obtaining the rotational rotor speed, the met hod proposed additionally reads the pressure drop across the meter Aft er the pressure drop and rotor speed measured are correlated as functi ons of the volumetric flow ratio of the air to the whole fluid and the total volumetric flow rate, both the flow rates are iteratively evalu ated with the functions on the premise that the liquid density is know n. The evaluated flow rates are confirmed to have adequate accuracy, a nd thus the applicability of the method to oil fields.