I have had great doubts about the theory of the birth of petroleum, which talks about the transformation of plants and animals, for a long time.
The Russians have another explanation, which they use.
Thank you DD for the link in which I found this article.
http://www.mondialisation.ca/index.php? ... a&aid=7016
In 1956, Professor Vladimir Porfir'yev presented their conclusions: “Crude oil and natural gas have no intrinsic relationship with biological matter near the surface of the earth. These are primitive materials that have sprung from abyssal depths. Soviet geologists had shaken the orthodoxy of Western geology. They called their theory on the origins of petroleum "abiotic theory" that is to say non-biological, to differentiate it from the Western theory on biological origins.