The Integrated Technical Solutions of Natural Gas Fiscal Measurement in WEPP

摘要

On the basis of brief introduction of the West-East Pipeline Project (WEPP), this paper describes the integrated technical solutions of the natural gas fiscal measurements used in WEPP in detail, which include the metering process design, the selection of flow meters and the associated instruments, the initial calibration of the flow meters, and the construction of natural gas flow standard facilities with high pressure and large capacity. The ultrasonic meters and turbine meters are selected, and the skid-mounted complete metering system is provided in each fiscal measurement station. The field check meter has been installed in each skid, and field check method to be used is discussed. The initial calibration results for the ultrasonic meters and turbine meters are presented also, Finally, the gas flow standard facilities consisting of the primary standard, secondary standard, and working standard are briefly introduced, which is designed to carry out full flow range calibrations of flow meters sizing from 50 to 400 mm in diameters.