Useful information for Fiscal Gas Metering

Documentation (excerpts) relating to measurement of petroleum for fiscal purposes and calculation of CO2 tax

NPD Regulations
Regulations relating to measurement of Petroleum for Fiscal purposes and for calculation of CO2 tax (The Measurement regulation)
NORSOK References
NORSOK Standard I-106: 2014 “Fiscal metering systems for hydrocarbon liquid and gas”
Ultrasonic meters
  • ISO 17089-1: Measurement of fluid flow in closed conduits - Ultrasonic meters for gas -- Part 1: Meters for custody transfer and allocation measurement
  • ISO 17089-2: Measurement of fluid flow in closed conduits - Ultrasonic meters for gas -- Part 2: Meters for industrial applications
Coriolis meters
ISO 10790: Measurement of fluid flow in closed conduits -- Guidance to the selection, installation and use of Coriolis meters (mass flow,
Gas turbine meters
ISO 9951: Measurement of gas flow in closed conduits -- Turbine meters
Differential Pressure elements
ISO 5167 (Part 1 to 4): Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full
Pressure measurement
ISO 15970: Natural gas -- Measurement of properties -- Volumetric properties: density, pressure, temperature and compression factors
Temperature measurement
CEI 60751: Industrial platinum resistance thermometers and platinum temperature sensors
Density
  • ISO 6976: Natural gas -- Calculation of calorific values, density, relative density and Wobbe index from composition
  • ISO 12213 (Part 1 to 3): Natural gas -- Calculation of compression
  • ISO 15970: Natural gas - Measurement of properties -- Volumetric properties: density, pressure, temperature and compression factor
  • ISO 20765-1: Natural gas - Calculation of thermodynamic properties -- Part 1: Gas phase properties for transmission and distribution applications.
Energy (Calorific value)
ISO 6976: Natural gas -- Calculation of calorific values, density, relative density and Wobbe index from composition
Sampling
ISO 10715: Natural gas -- Sampling guidelines
Gas Chromatograph
  • ISO 6974 (Part 1 to 6): Natural gas -- Determination of composition with defined uncertainty by gas chromatography
  • ISO 10723: Natural gas -- Performance evaluation for on-line analytical systems.
AGA reports
  • AGA Report 3-4: Orifice Metering of Natural Gas
  • AGA Report 5: Natural Gas Energy Measurement
  • AGA Report 7: Measurement of Natural Gas by Turbine Meter
  • AGA Report 8: Compressibility Factor of Natural Gas and Related Hydrocarbon Gases
  • AGA Report 9: Measurement of Gas by Multipath Ultrasonic Meters
  • AGA Report 10: Speed of Sound in Natural Gas and Other Related Hydrocarbon Gases
  • AGA Report 11: Measurement of Natural Gas by Coriolis Meter
Complete list of documentation
www.npd.no/globalassets/global/norsk/5-regelverk/standarder/maaleforskriften.pdf

The course has been developed by

Trainor as

Christian Michelsen Research

Atlantia as

under contract and in cooperation with

NFOGM

The development has been supported by Norwegian Petroleum Directorate and by TEKNA.