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Title: D
Author: Matt Holmes
Source: 2022 International School of Hydrocarbon Measurement
Year Published: 2022
Abstract: The natural gas industry has only one standard that has maintained requirements for averaging input data for volumetric calculations over a calculation period. That standard is the American Petroleum Institutes (API) Manual of Petroleum Measurement Standards (MPMS) Chapter 21.1 - Flow Measurement Using Electronic Metering Systems - Electronic Gas Measurement. Data averaging is used to represent operational and flowing conditions over a period of time, to limit the number of records required to maintain a full audit trail, to help verify the validity of the reported volume, and to allow recalculation of volume and editing if needed. Data points are averaged over a defined calculation period, typically 15 minutes or an hour, with measurements and calculations taking place typically around once per second.

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