Actually, the earth offers an infinite supply of oil if you drill sufficiently deep. Search on “abiotic oil” to learn more. Most of our oil does not come from fossilized animals and plants. It is continually made by forces within the earth. I have read about abiotic oil over the last couple of decades and it makes a sort of sense. Given the amount of oil used since its 1870, or so, discovery (more than a trillion barrels), how many plants and dinosaurs could there have been, the decaying of which provides the numbers in this forecast you provide? Must have been many billions .
alternativebyfritz 
Actually, the earth offers an infinite supply of oil if you drill sufficiently deep. Search on “abiotic oil” to learn more. Most of our oil does not come from fossilized animals and plants. It is continually made by forces within the earth. I have read about abiotic oil over the last couple of decades and it makes a sort of sense. Given the amount of oil used since its 1870, or so, discovery (more than a trillion barrels), how many plants and dinosaurs could there have been, the decaying of which provides the numbers in this forecast you provide? Must have been many billions .
A starter: https://is.gd/B2FvYT