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Title: Effecots On Entrained Liquid Or Orifice Measurement
Author: C. V. Mooney
Source: 1987 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1987
Abstract: In the measurement of natural gas in field operations using the conventional orifice meter, all of the factors used in the calculation of flow are based on the assumption that the gas is dry. This condition is rarely the case in field measurements. The A.G.A. Committee Report Ho. 3, (1), does not give any information or data regarding the effect water and/or distillate may have upon gas measurement by the orifice meter. It was in this area of gas measurement that graduate-engineering students at Texas A&I University, Kingsville, Texas have conducted research operation in the laboratory and in the field. Schuster, (2) has conducted full range field tests of gas-liq.uid mixtures at 60O and 1,000 pounds per square inch pressure using the orifice meter. In these tests a U-inch meter run was used to measure the dry gas. After this measurement, water and/or distillate in varying amounts was introduced and the two-phase stream was then measured first through a -inch meter run and then by a 3-inch meter these tests covered liquid-gas ratios up to 6OO barrels of liquid per million cubic feet of gas. A cubic foot of gas in this paper is measured at lh.63 pounds per square inch absolute and 60 Fahrenheit.

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