When I came back from VN in 1974, my brothers and I bought a Gas Furnace my dad, ran about 1500 foot of piping off an old oil well to it with about 13 lbs. of pressure and it heated his house for FREE for years. I went to Africa for a while and was told State officials tried to shut down the operation because it didn’t have a warning smell. My bros. rigged something up that would put a rotten egg smell in the house if there was a problem. The lawsuits went on until Dad died and Mom died. After that my sister’s kid took the old farmhouse down and built a new place with the same hook up. Since there was no record of what the new house used for heating, they haven’t been back and he’s using the same well, same hook-up and laughing his ass off. The State (or whoever) spent a ton of money and we never spent a dime defending my Old Man’s right to HEAT HIS OWN HOUSE.
My dad was an oilfield pumper for one of the major oil companies and their practice “back in the day” was to offer a connection to the field gas to the royalty owner’s home if it was near the well. Our house was heated the same way when we lived on the lease. I suspect that practice has faded away due to the odorant issue.