Marginal Wells Drive 40% of Oil and Gas Methane

A study finds low-output US wells, which supply about 5% of production, account for a large share of methane emissions from the sector.

Updated on Nov. 5, 2026 in Environmental

A lone weathered pumpjack on flat dry scrubland under a pale sky, with a faint haze rising from a small vent stack. — Low-output U.S. oil and gas wells, about 5% of production, account for roughly 40% of the sector's methane emissions, a study finds. AI Illustration. Upload story photo >

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Should the government require tighter limits on methane pollution from oil and gas wells?

Researchers found marginal oil and gas wells in the United States produce 40 per cent of the industry's methane emissions. The finding comes as the Trump administration relaxed laws governing methane emissions, including lowering standards for marginal wells.

Why it matters

Marginal wells, which produce under 15 barrels of oil equivalent per day, are roughly 10 times more polluting per unit of fuel than high-producing wells. The findings bear on whether federal methane rules are sufficient to meet the industry's goal of reducing methane intensity to 0.2 per cent by 2030.

The estimates come from MethaneSat satellite measurements covering more than 80 per cent of US onshore production, extrapolated to the contiguous US, and show marginal wells producing 5 per cent of output but about 40 per cent of supply-chain methane emissions. Marginal wells' intensity of roughly 60 per cent compares with a global figure near 2.9 per cent, and the reliability of the extrapolation beyond the satellite-covered area is not addressed in the source.

The players

Trump administration

The current US federal administration, led by President Donald Trump, which relaxed laws governing methane emissions from oil and gas wells including lower standards for marginal wells.

MethaneSat

A satellite mission that provided the methane emissions measurements used in the study.

The details

Researchers collated satellite methane data for May 2024 to June 2025 and extrapolated it to estimate emissions from oil and gas infrastructure across the contiguous US. The analysis finds that marginal wells, which produce less than 15 barrels of oil equivalent per day, account for the majority of well-site methane emissions.

2023: The industry methane intensity target of 0.2 per cent by 2030 was unveiled at COP28 in Dubai.
May 2024 to June 2025: Satellite methane emissions data was collected.
October 2026: The Trump administration relaxed methane emissions laws for oil and gas wells.
2030: Target year for the industry's methane intensity reduction goal.

Big Picture

The findings put the 2030 methane intensity target from COP28 in Dubai in direct tension with the relaxed federal rules for marginal wells adopted in October 2026. Marginal wells' estimated intensity of 60 per cent sits far above that 0.2 per cent goal, suggesting the target depends heavily on how low-output wells are regulated.

Because marginal wells are concentrated in a small share of production yet dominate methane output, changes to how they are regulated would directly affect the size of US methane emissions. Households may see the results in air quality and climate outcomes rather than in prices or day-to-day costs, and the source does not address any direct consumer effect.

The takeaway

Low-output wells can carry an outsized share of pollution, so the scale of emissions from the sector depends on how these specific wells are treated under the rules. Tracking whether the 2030 methane target is met will show whether the relaxed standards keep pace with the industry's own commitments.