It is no longer a thing that happens, because all of the oil deposits under enough pressure to gush out when tapped, have been tapped. Nowadays oil is harder to find and has to be found other ways, even scanning for rock (shale) that you wouldn’t think contained oil if you saw it or held a piece in your hand, but oil can still be extracted from it.
Oil is a finite resource. It won’t last forever. The “peak oil” point, at which oil production is at its peak and we start running out, is projected to happen sometime before 2040. Wikipedia has an article on this topic: https://en.wikipedia.org/wiki/Peak_oil
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