Methane emissions have become the most immediate target of oil and gas company efforts to mitigate their greenhouse gas emissions — the oft-cited “low-hanging fruit” in decarbonisation.

But the industry still struggles with reporting and measurement of its methane emissions.

Earlier this year the International Energy Agency said up to 70% of methane emitted by the energy sector, including coal and bioenergy as well as oil and natural gas, goes unreported.

The 12 major operators that form the Oil & Gas Climate Initiative in March agreed to all but eliminate their methane emissions by 2030 and put more effort into seeing that other producers slash emissions, whether voluntarily or through strengthened regulations.