Does Earth's core have a heat sink and does it need one? Pardon a question from a complete physics noob. I know only very basic thermodynamics and if my question is completely ridiculous, I apologize.
I've heard a very interesting, yet very questionable "theory" (not official, more like an idea) that the Earth actually uses crude oil as a heat sink, in an analogy to heat engine. Thus oil extraction leads to insufficient cooling, and global warming as a result.
While, the theory can be completely bogus, and I'm not thinking that it's that easy to pinpoint the cause of global warming (there are multiple reasons AFAIK), I thought that the idea is somewhat interesting and terrifying at the same time, reminding me of Superman's Krypton.
That's why I wanted to ask people who are better at physics than I am to provide some informed feedback on this, as far as humanity aware of Earth's processes. I understand that our knowledge can be limited, especially mine. And damn, if it's not complete bogus, I better share the idea with the world :) 
Still, I hope to be disproved, and the idea to belong to the realm of flat Earth. Would love to hear what people think about it, and if there is any research that can be relevant to this in any way.
 A: As you expected, this is complete nonsense.
There are several reasons why, and here are just a few of them:


*

*With or without oil, there's not anywhere near enough heat coming from the core to begin with to explain the energy imbalance we're currently experiencing. There's about 0.087 watts per square meter of heat flowing from the core to the surface, and the current measured energy imbalance is almost ten times that value, at 0.6 watts per square meter (source).

*The oil produced in the crust is nowhere near where the heat actually is. Every bit of oil we've been able to extract is in the top few miles of the crust, and the core starts at around 1,800 miles below the surface.

*There's nothing particularly special about the formation of oil that makes it significantly more endothermic than other reactions like the formation of metamorphic rock. In other words, it doesn't remove heat significantly better than other components of the crust when it's formed.

*Compared to other components of the Earth's crust, oil is pretty scarce, and so doesn't remove much heat by its formation anyway.
