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Title: Re-Evaluation Of Axioms Regarding Orifice Meter Wet Gas Flow Performance
Author: Richard Steven, Frank Ting, Gordon Stobie
Source: 2007 South East Asia Flow Measurement Conference
Year Published: 2007
Abstract: New wet gas flow data with 3 and 4 orifice meters suggests that orifice meters can be used like other differential pressure (DP) meters to meter wet gas flows. Liquid hold up due to the presence of the orifice plate was not found to cause pipe flow or metering problems. The wet gas flow readings from orifice meters are repeatable and predictable and for given wet gas flow conditions, the liquid induced error in the gas rate prediction is less than for equivalent cone and venturi type DP meters. Chisholms correlation has been shown to correct the liquid induced gas meter errors satisfactorily for most wet gas flows when the liquid flow rate can be estimated by independent means and DPs are kept below 500WC.

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