> 2.75 million unplugged wells in the US that output "6.6m tons of Co2 worth of methane" [2], or put in another way each well puts out 2.4T of Co2e each per yea

> 2.75 million unplugged wells in the US that output "6.6m tons of Co2 worth of methane" [2], or put in another way each well puts out 2.4T of Co2e each per year. Per the article you cited, the 6.6m tonnes (not tons) of CO2e does not have a lot of empirical measurements behind it, and it may be much higher. That's one of the things these satellites can help to improve. I think a better way to look at it is comparing the 57t of emissions with other sources of CO2 emissions. For example, a single cross-country flight puts out in the range of 300-350t of CO2 (~1t per passenger). So launching 6 of these satellites in separate launches would be equivalent to a single airliner flight, i.e. negligible in the grand scheme of things.