Why is oil only found in certain areas?

Question

It seems that oil is found, mainly, in Texas and the middle east.

If oil is made from crushed sea animals, shouldn't it occur everywhere?

Why don't we, in the UK, have our own supply of oil?

Answer 1

Brainless !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!...

Answer 2

We do it is called the North Sea and also there is oil under the land in Scotland--- no kidding.