this post was submitted on 19 Sep 2024
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Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

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‘Red Flags’ on Climate: U.S. Methane Emissions Keep Climbing | Satellite data shows the U.S. releasing more and more of the potent greenhouse gas into the atmosphere, despite pledges to cut back. (www.nytimes.com)
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[–] MrMakabar@slrpnk.net 2 points 1 month ago (1 children)

A lot of US oil wells are using fracking. Fracking produces oil and gas very quickly, but the well also declines quickly. First year decline for tight oil is 50% and second year another 30%. For shale oil itvis 34% in the first year.

Those two make up over half of the US oil and gas production. So no permits would mean US oil production falls by a third within 2 years or so.

https://jpt.spe.org/life-after-5-how-tight-oil-wells-grow-old

https://www.hartenergy.com/exclusives/why-us-shale-production-declines-are-higher-you-might-think-188251

[–] thejevans@lemmy.ml 2 points 1 month ago

I agree that once directionally-drilled wells are completed and start producing, they have a short life where they are producing a serious profit. The issue is that companies will get permits that don't expire for drilling a bunch of wells, then they drill some (but not all), and often won't complete all the wells immediately, as they wait for the market prices of oil and gas to be in their favor. This can drag on for a decade or more.

Once these wells aren't as profitable, they still produce oil and gas for a long time, and there are emissions associated with that.

Also, while emissions do correlate with production overall, emissions are a much higher proportion of production as wells go beyond their peak, and they often get sold to companies that don't do as good of a job maintaining them, which leads to more emissions, etc.