Why do Arab countries have most of oil-gas stock in their ground?

Question

Why do Arab countries have most of oil-gas stock in their ground?Allways wondering how come earth is big and how come there are not much oil or gas stock in other countries like arab countries do?what is the geographical or scientific reason?

Answer 1

Because the Jews took a left turn and discovered oranges?

No seriously, from Precambrian times (>540 million years) till Permian times (251  million years years ago) there were warn tropical shallow seas, including the neo-Tethys ocean, in the region now called Arabia, the shallow seas were part of the continental margins of the supercontinent Gondwana land.

Microscopic Plankton that lived in the shallow seas died and settled on the sea bed, and they were buried under several hundred to a few thousand feet of sediment. After a several million years the seas disappeared, due to Arabia colliding with Asia, and the correct heat and pressure underground cooked the plankton fossils and turned them into oil and gas. The oil and gas then became trapped underneath layers of Triassic shales and Permian Salt domes.

Read: Paleozoic Hydrocarbon Habitat in the Arabian Plate -

by Abdulkader M. Afifi

Answer 2

Because of Jesus Herbert Christ.

Answer 3

They don't.  The amount of oil that is around the coastal U.S. is vastly larger than anything found in OPEC nations.