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Title: Performance Of A Vertically Installed Venturi Tube In Wet-Gas Conditions
Author: Emmelyn Graham Michael Reader-Harris David Hodges Richard Hone Amanda Barrie Neil Ramsay
Source: 2014 South East Asia Flow Measurement Conference
Year Published: 2014
Abstract: Venturi tubes are one of the most common types of m eters used for wet-gas flow measurement as they are a simple, robust and cost-e ffective meter. Many commercial wet- gas and multiphase meters incorporate a Venturi tub e along with other measurement technology to determine the flow rate of the indivi dual phases. The presence of the liquid causes an increase in th e measured differential pressure and results in the Venturi tube over-reading the actual amount of gas passing through the meter. This over-reading is usually corrected using avai lable correlations derived from experimental data to determine the actual gas mass flowrate. Thi s over-reading trend is observed in all differential-pressure meters. The flowrate of the liquid, which can be a combination of water and hydrocarbons, is normally determined by an exte rnal means such as from test separator data, tracer experiments or sampling etc. Informat ion on the liquid flowrate and density is necessary to use the correlations

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