Flaring

CGPF cropped
Central gas processing facility

What is flaring?

Flaring is controlled burning of gas.

It is a safety mechanism, used to reduce excess pressure in central gas processing facilities (CGPF) and field compression facilities (FCF) during temporary shutdowns and maintenance, and in case of emergency.

Flaring is also used to dispose of gas during maintenance, appraisal or completion* activities when gas wells are not connected to gas gathering infrastructure.

What will I see?

Coal seam gas is 95-98% methane, with small amounts of nitrogen and carbon dioxide (CO2). Methane burns with a clean, non-smoky flame. This is different to flares from heavier hydrocarbons, as seen at petroleum refineries.

The size, shape and luminosity of a flare are influenced by environmental conditions and the amount of gas being flared. It is normal for a flare’s appearance to vary according to conditions.

FCF flaring takes place close to the ground, so the flare is not visible at distance. CGPF flares will be higher.

What will I hear?

Flare noise levels depend on gas volume, the flaring frequency and time of day.

Arrow’s scheduled flaring will occur during day  time hours, as much as possible.

How frequently?

The frequency and duration of flaring will be dictated by both scheduled and unscheduled events, such as necessary maintenance and  excess pressure conditions. Larger releases will take place at a CGPF once every year for approximately two to three days. Smaller releases may take place every one to two months for no longer than approximately two hours at a time.

Will I be notified?

Landholders near activities will be notified before planned flaring events where possible.

There will be instances where unplanned flaring is needed for safety so advance notice will not be possible.

*Well completion involves the steps taken to transform a drilled well into a producing one.