Actually it's not so secret and I wouldn't call it dirty.
Raymond J. Learsy: Oil's Big Dirty Secret as Producers Rake in Hundreds of Billions.
But wait, suppose, just suppose they are wrong and willfully misleading us. That oil's origins are not, to repeat, not biological, according to the gospel we have been taught to believe. That in effect oil originates from deep carbon deposits dating to the very beginnings of the Earth's formation in quantities vastly greater than commonly thought. The very presence of methane in the solar system is cited as one of the key underpinnings of this theory's seriousness. Then by seepage through the earth's mantle, Abiotic oil becomes in essence a renewing resource migrating toward the Earth's crust until it escapes to the surface (i.e. Canada's tar sands as theorized by some) or trapped by impermeable strata forming petroleum reservoirs.
Much research has been done on Abiotic Theory by a bevy of Russian and Ukranian geologists starting during the Soviet era, most especially by Nikolai Alexandrovich Kurdryavtsev who proposed the modern Abiotic Theory of Petroleum in 1951.
Among Kurdryavtsev's colleagues was Professor V.A. Krayushkin, chair of the Dept. of Petroleum Exploration at the Ukranian Academy of Sciences and leader of the DneiperDonets Basin Exploration project in the Ukraine, an area that has yielded eleven giant oil fields holding at least 65 billion barrels of oil and some 100 billion cubic meters of recoverable gas, comparable to the North Slope of Alaska . The area had previously been designated as having no potential for petroleum production whatsoever. Exploration, according to a paper by Richard Heinberg, was conducted entirely according to the "perspective of the modern Russian Ukranian theory of abyssal, abiotic petroleum origins".
Question, how often have you heard of M. King Hubbert and his peak oil theories dating to 1949 and how often have you heard of Kurdryavtsev or Krayushkin? Certainly, for those having some interest in Peak Oil jargon, Hubbert's name comes up endlessly, while Kurdryavtsev and Krayushkin probably never, or rarely if at all. But then again Hubbert was Chief Consultant for Shell Oil's Production Research Division and his theories served their Marketing Department well. His predictions first made in 1949 that the fossil fuel era would be of very short duration made him, with help of the fine hand of oil industry flacks, probably the best known geophysicist of his time.