[Final Authority]

My brother-in-law is the vice President of a major oil field service company who believes, at least in part, to the theories in this article. He as well has no good explanation to the continuation of oil production in fields once thought tapped out. He says, anyplace, nearly anyway, in the world where they want to drill they can find something as long as they put the hole in the right place and deep enough. It may be heavy oil or gas or decent crude but it is not always enough to make it economically feasible. So they tend to stay in areas where they have equipment, crews, knowledge of the area and the mineral rights. Essentially, there is a lot of inertia to seek other fields.

[NotJustAnotherPrettyFace]

Come and listen to a story about a man named Jed
A poor mountaineer, barely kept his family fed,
Then one day he was shootin at some food,
And up through the ground came a bubblin crude.

Oil that is, black gold, Texas tea.