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Title: How to Achieve More Accurate Measurement
Author: Carl Jarvis
Source: 2016 Grande Prairie - Canadian School of Hydrocarbon Measurement
Year Published: 2016
Abstract: The AER has developed standards of accuracy for gas and liquid measurement that take into account such concerns as royalty, equity, reservoir engineering, declining production rates, and aging equipment. These standards have evolved, but originated from a 1972 Energy Resources Conservation Board hearing decision that determined a need for pool production accuracy standards of 2.0 per cent for oil, 3.0 per cent for gas, and 5.0 per cent for water. The current standards are stated as maximum uncertainty of monthly volume and/or single point measurement uncertainty. The uncertainties are to be applied as plus/minus (e.g., 5.0 per cent). Measurement at delivery/sales points must meet the highest accuracy standards because volumes determined at these points have a direct impact on royalty determination. Other measurement points that play a role in the overall accounting process are subject to less stringent accuracy standards to accommodate physical limitations and/or economics.

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