The Development of Major Caliber Pipe Natural Gas Metering System

摘要

Aimed at the metering problem of the low pressure and big flow natural gas, the paper discusses the principle and application environments of flawmeter. The reasons and characteristics to select and use the AnnuBar flawmeter of Rosemount Company are also discussed in the paper. According to requirement of the system, the author gives out the figure of the system; the port circuit figure and the solution of anti-stopping up problem for pressure hole and the linearization of the measurement data. The system is working at an east-north oilfield. The result is fairly good.