The volume of the earth is 260 billion cubic miles -
https://www.space.com/17638-how-big-is-earth.html. This volume staggers the imagination. We can't conceive of how big this is.
There is plenty of room for both, fossil oil, and chemical oil as explained by the OP.
BTW, all the material of all the bodies of all the people on earth would easily fit into only two cubic miles.
your issue is you think life began just before the fantasy novel of jesus was first wrote
you cant conceive the thought of millions -> billions of years of bacteria, organisms, vegetation decay and composting under pressure
you still beleive things just magically appeared one day all at once due to some mystical giant
Believing stuff is what religion is all about. You have an interesting religion. Reality is more like the below:
- In the Beginning God created the heavens and the Earth. Nobody knows if time as it is now is the same as it was before about 7,500 years ago. And, nobody knows if anything was the same before that 'time'.
- God made the current form of the heavens and the Earth in the 6 days of creation super-basically as it is recorded in the Bible.
- The fact that the Earth was formless, and empty or void, before God created light, shows that there was a destruction of the universe between the 'time' of the Beginning and the creation of this created form of the universe. God doesn't make any junk. He would have made a good original universe, not one that was formless and void.
- The creation of light shows that time may have been different but similar before this created universe form, because light is electromagnetic. But some aspects of material are electromagnetic, as well, meaning that there were differences as well as similarities in the electromagnetism.
- Some 'religious' scholars believe that it was the great battle between Satan and Michael - as recorded in the Revelation - that destroyed the universe 'before' the 6 days of creation. But we don't really have a formal, public record of that.
Until you start to believe the records, and start to put your 'thinking' cap on, you simply have a religion. Why don't you think rather than simply believe the religion of other scientists?