Saint Guinefort
Verified User
I know it comes from a natural process primarily created through the dying of diatoms in the oceans. These sink to the bottom where they decompose into methane that is in it's frozen (solid) form due to low temperatures and high pressure. This is then slowly covered with sediment and over millennia is compressed into oil. That's the primary process. So, there is oil constantly forming within the Earth. We may be extracting it faster than it's being formed but since we keep finding more and more of it, it's hard to tell if we're doing that or not.
We ARE extracting it faster because you left out one MAJOR step: the oil formed in that accumulation further MIGRATES to a reservoir rock. That takes a very long time. You can't just drill into the ground and soak out all the oil. You have to go to a reservoir or you have to take a source rock and blast it apart with fracking to stimulate oil release.
It is not hard to tell that we are removing it faster than it accumulates in usable quantities. We KNOW we are pumping it faster. That's basic math and physics.
Oil won't necessarily "run out", but economically viable deposits of it most assuredly WILL. WHy do you think we have this boom in Fracking? Secondary stimulation of wells is what happens when oil gets harder to get from conventional wells and you have to start doing more and more to get it back out.
It's something you learn in economic geology classes: When you use a resource it will one day only yield lower and lower "grades" of the resource. It becomes harder and harder to get a usable quantity out as you use up the easily available sources. Then you pay more and more and more until ultimately it becomes economically impossible to recover it and use it.
That's what we're looking at with oil. When that is is anyone's guess. The whole Peak Oil thing comes and goes every few years. But one way or another we will run out of oil that we can afford. Maybe we'll luck out and collapse our society with climate change before that happens.