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re: Astrophysicist Dr. Willie Soon explains the abiotic origins of hydrocarbons.
Posted on 1/9/24 at 2:32 pm to lsugradman
Posted on 1/9/24 at 2:32 pm to lsugradman
Thanks for the education on this. I do have a question. My understanding is that the "crude oil" sent to refineries has different grades. For instance I remember a while back that when the gulf refineries stopped getting a higher or sweeter grade crude, from Venezuela I think, that things didn't go as smooth. So my question: is the grade of crude based upon the type of decaying organism or unrelated and due to other sediments entirely?
TIA
TIA
2
Posted on 1/9/24 at 2:33 pm to NorCali
sour vs sweet has to do with sulfur content
Posted on 1/9/24 at 2:41 pm to NorCali
quote:
So my question: is the grade of crude based upon the type of decaying organism or unrelated and due to other sediments entirely?
The grade of crude is based on its API number. A high API crude is thin and flows well. A low API is thick and can be thick as tar.
Whether a crude is sweet or sour depends on it's sulfur content. Generally 0.5% sulfur or above is considered sour. It really depends on whether or not a refinery can process the sulfur containing crude or not.
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