We track the undersea coal reserves. We locate an off shore reserve – maybe in the North East.
We drill down, and send down a plug of high explosive, Then we start getting natural gas up.
So the geothermal water peculate throguh the coal deposits – and give us methane. This si the source of all Fossil Fuels in the world – as the methane polymerises, in the presence of Pt.
We are not interested – gas has high value as a fuel. As at 1 atmosphere. Methane combines with oxygen. Gas prices should fall by 25% - we are beig taken for a ride.
So we can turn underground coal into methane – for far less that the cost of miningn coal. Nature provides the water for us.
So we get basically free natural gas, and donb't need to burn oil. There is no shortage of underground coal deposits.