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Title: Impact Of Using ISO/TR 11583 For A Venturi Tube In 3-Phase Wet-Gas Conditions
Author: E. Graham, m. Reader-Harris, N. Ramsay, T. Boussouara, C. Forsyth, L. Wales, C. Rooney
Source: 2015 North Sea Flow Measurement Workshop
Year Published: 2015
Abstract: Venturi tubes are one of the most common types of d evice used for wet-gas flow measurement as they are a simple, robust and cost-e ffective flow meter. The presence of the liquid in the gas phase causes an increase i n the measured differential pressure and results in the Venturi tube over-predicting the actual amount of gas passing through the meter. This over-reading is usually co rrected using available correlations derived from experimental data to determine the act ual gas mass flowrate. This over- reading trend is observed in all differential-press ure meters. The flowrate of the liquid, which can be a combination of water and hyd rocarbons, is normally determined by an external means such as from test s eparator data, tracer experiments or sampling etc.

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