Meana Petro

HSE & emissions

Flaring intensity & combustion emissions

Flare volume per barrel, the CO₂ from combustion and the methane that slips through unburned — with the combustion efficiency as the dial that matters.

Inputs

98 % is the design assumption; measured averages are nearer 92 %.

1.0 for dry methane; 1.3–1.6 for an associated gas with NGLs.

MJ per standard cubic metre. 38 for lean gas, higher with NGLs.

Results

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How it is calculated

  • Flaring intensity = flare volume / oil production, reported in both Sm³/bbl and scf/bbl.
  • Burned hydrocarbon produces one mole of CO₂ per mole of carbon, so CO₂ volume = burned volume × average carbon number.
  • Unburned gas slips as methane at the stream's methane fraction and is counted at its GWP.
  • CO₂ already in the stream passes through and is added at a GWP of 1.

Standards it speaks

Where this stops being true

Combustion efficiency is the whole answer and nobody measures it routinely. Design documents say 98 %, field measurement campaigns find averages nearer 91 to 95 %, and a wind-blown or over-assisted flare can fall much lower — the difference between 98 % and 92 % triples the CO₂-equivalent of the same flare. Flare meters are also frequently absent or badly calibrated, so the volume itself is often an estimate dressed as a measurement. This tool converts what you give it; it does not audit it.

Related tools

  • Vented methane to CO₂ equivalent

    A vented or fugitive gas volume converted to tonnes of methane and tonnes of CO₂ equivalent on both the 20- and 100-year horizons, with an OGMP 2.0 reporting level attached.

  • Mixture LEL — Le Chatelier

    The lower and upper explosive limits of a multi-component gas, and where a measured atmosphere sits against them.