Oil fields pumped dry have been known to “replenish” after a few decades. Literally filling back up again. Where is this oil coming from?

The ability to detect crude oil deposits, as sophisticated as it seems, is far from perfect. There are many hidden reservoirs, there are many interconnections that can serve as pipelines to help disperse oil distribution in the natural subterranean environment. The term "fossil fuel" is, in fact, a kind of pejorative term to minimize the reality that oil has had a big role in things and can continue to be of benefit in myriad ways depending on the direction of the thinking by your leaders. So we are watching to see how everyone does as more information unfolds, but the reality is this is not truly of a fossil source, it is presumed to be from living things and plant matter, but it is a creation in its own right and not something that evolved to be there over time as a consequence of massive life forms on the planet.