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Title: Flare Measurement Practices
Author: Eric Estrada Steve Baldwin
Source: 2017 International School of Hydrocarbon Measurement
Year Published: 2017
Abstract: With the recent release of the Green House Gas Regulations, the increased visibility of flaring natural gas and increased awareness of royalty owners, the ability to accurately measure and account for the amount of product flared from a facility has become increasingly important to regulators, royalty owners and operators. In the past, flare gas was not considered a necessary measurement, so the measurement of flared product has often been overlooked or not given the same attention as custody transfer measurement. This paper reviews data obtained during flow calibration of several meters at an internationally accredited flow laboratory. The types and technologies of flare gas meters tested include optical scintillation, tracer methods, and ultrasonic meters designed specifically for flare measurement. Meters were tested in both straight-run and elbow configurations. The data shows the importance of flow calibrating flare meters prior to installation to reduce bias, and define both the range of linearity and range of operation. The data presented also shows the effects that upstream piping geometry has on these flare meters.

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