In the old days of shallow drinking wells on farms, it was well known that one could suffocate from gas in the well.
Experienced workers would always go down with a rope around them and a competent worker to pull them out.
These were 30 and 50 ft. wells.
So methane is where you find it.
What do you think the old days of the canary in the coal mine was all about?
In 1911 Michigan's first commercial natural gas well began production. The tabulation of "Reported Discoveries of Gas in Michigan" in the Geological Survey Bulletins is longer than the oil well list and included 116 wells. These were mostly located in southeastern Michigan, including Macomb, Oakland, St. Clair and Wayne counties as well as in Manistee County in western Michigan. Many of the early natural gas discoveries were most likely made not as a result of a search for oil or natural gas but were instead test wells drilled for salt or for fresh water. Strong flows of gas from water wells are not unusual in southeastern Michigan and sometimes the shallower rims of the basin can still provide a surprise. In the mid 1980s holes drilled to provide footings for a highway overpass in St. Clair County "blew out" with natural gas. The flow of gas from these early wells was usually quite small. The largest volume of natural gas was in St. Clair County were wells supplied "several families" in one case, "pumps, drills and two houses" in another case and "one house" in a number of instances.
Michigan Oil and Natural Gas Exploration Before 1925
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