Yes, but that really isn't related to the discussion of the formation of hydrocarbon molecules in crude oil.
There are lots of other processes as well, desalting, hydrotreating to remove sulfur, reforming to gain octane values, etc.
Some hydrocarbons float on water, but not others.
That was my point. You thought oil formed below and floated up through water. Some of those oil would be sinking not floating. It negates the idea that they were formed below and floated up. In crude oil, this is measured by the API gravity scale. Higher numbers are lighter. 10 is equal to water, lower sinks in water, higher floats.
The proof is in the results.
I agree, exploration on the basis of the biotic formation of oil has produces all the oil we use today. The theory of abiotic oil has produced papers and occasionally cash from the gullible, sometimes that included governments.
Today, there is not commercial oil production not sourced to sedimentary deposits.
from the thread blocked for duplication
http://www.freerepublic.com/focus/f-news/3357096/posts?page=13#13
the carbon that settles into the ground or sea bed or ponds etc...is constant piled onto year after year and is forced to the mantle/core
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Sedimentary basins, where we find and produce oil/gas, have a bottom. They don’t continue down to the mantle. Beneath them is igneous rock, referred to as basement rock in petroleum geology. It is an impervious granite layer. It can have fractures, but it is not porous.