Genesis 7:11 ................. “fountains of the great deep were broken up and the windows of heaven were opened" Until that time moisture on the earth was caused from mists coming up out of the ground.
So the thought occurred: Water H20 is theorised to migrate down there. On the way it will pass through carbon rich rocks. At high temperatures and pressures can the hydrogen and carbon combine to form hydrocarbons, starting with methane, and eventually oils.
Does the oil then "go up" to create oil fields?
Thought experiment: You discover that there is unlimited oil (an oceans worth). What do you do? you suppress it and take countermeasures. Unlimited energy will lead to a population boom - so clip fertility becomes important. Unlimited energy would curtail other energy tech - so demonise oil now and build the alternative tech (solar and wind and heat pumps) so the world is not dominated by oil derived energy. Demonise CO2 so people will not want to use the unlimited oil. Curtail oil exploration so people never discover the unlimited resource. The petro-dollar FED would be destroyed by unlimited oil - economic death to established power structures.
.THAT IS SOME MIGHTY DEEP THINKING!!!!!
But, having WORKED in the OIL Industry out of Houston that IS EXACTLY how oil is made...but one more thang needs to be added, the molton IRON & NICKEL BUT there are OTHER elements that come out of the processing of 1 barrel of oil...
Also, coming from TEXAS, wells would be capped for a period of time due to the "OIL" running out but in a few years, depending, the well head would be opened up and guess what...THERE'D BY OIL!!!!!
