The late Rush Limbaugh had at one time, described crude oil as a product of the earth’s refuse system that processes its own organic waste. (My paraphrase)
BL, what you described is spot on. It’s perpetual. Dead dinosaurs my eye…that’s another, IIRC, lie concocted by Rockefeller many, many years ago, to give the illusion that we have a finite, limited supply…and to justify pricing and controls thereof.
Now on the subject of ‘dirty’, isn’t it Iraq and specifically the Kurdistan region, that has some of the sweetest crude?
Light sweet crude is considered the best oil. It comes from a lot of places. The simple answer is it is lower in sulfur. Sour crude is high in sulfur. Light sweet crude is easier to process and the gasoline that comes from it more easily complies with emissions standards. Heavy crudes have more solids. It's thicker and more expensive to process than light.
Believe it or not, a good portion of US crude, referred to as WTI, is among the best in the world. Brent Crude is next, then OPEC Reference, which is the least expensive. There are 160 variants of crude oil. The sweet-sour scale goes from 0 to 3.5. The density scale that defines heavy/light ranges from 20 to 50. Most Middle East oils lean toward heavy/sour. North Sea oils and most US crude is light/sweet, as are North African and Asia crude. Mexico and Latin American oil is generally medium/heavy.
Wonder where light and sweet terms came from? Old-school oil prospectors used to smell and taste it to gauge its type and quality. True story.
Oil refining is pretty simple. The process is called
cracking. You heat up the crude and it separates into its components. Gasoline, diesel, kerosene (jet fuel), gasses, etc. The chart below is one of the best I've seen. But the products listed are only a fraction of what comes from crude.
When Prius-driving friends (who love the smell of their own farts) piss and moan about fossil fuels, ask them what they are ready to give up if that faucet were turned off. See chart. We would all be living in caves and wearing bearskins again if that were to occur.
Some have speculated that the cost of plastics, which just about every product in the world uses, would quadruple. You can make plastic (polymers) made out of other materials - called bioplastics - but the process is very expensive. People have been trying to figure this out for years and they still haven't found a way to make it anywhere near the cost of petroleum-based polymers.