It doesn’t matter how it is formed. What matters is in what rock formations it can found. It is those which are running out.
People don’t have a great image of what oil is like underground. There are not lakes or reservoirs or oceans. It may be phrased that way, even by oil people, but that’s not what is there.
What is there is porous rock. The rock has 2 qualities of interest. Porosity and permeability. Visualize a jar of marbles. They have little gaps between them. Those are pores. Then the interconnectedness of the pores is the permeability.
That’s what the rock is in an oil field. Porous rock that has connections among the pores. They fill with oil and water. A mixture. They are down 1000s of feet and the rock pressing down creates enormous pressure.
If you then drill a well down to the pores, essentially open up to the surface, the pressure will squeeze the oil out of the pores into that low pressure opening leading upwards and upwards it will flow/gush. The interconnectedness will allow flow from some distance away from the well.
When the pores have flowed, extending outwards to all the available oil connected to flow path, that well is empty. Cap and Abandon. Drill elsewhere. It ain’t gonna refill.
This is the point. It doesn’t matter what the origin was of that oil in the pores. It doesn’t matter if those pores filled up from heat/pressure processed organic material or if it happened from some less understood emergence of hydrocarbons from deeper down. In both possible cases, it still takes millions of years for the pores to fill.
That’s why it doesn’t matter. This has been going on over 100 years. Of course oil people have gone back to empty wells and investigated if they refilled. They never do. Empty stays empty.
Hi.
You said many words to get to this conclusion...
“They never do. Empty stays empty.”
Sorry, but wells refill all the time.
Google it.
5.56mm