[aerohead]

I believe I've wasted enough on this 'nothing-burger.'
The original premise originated from Professor Kutcherov et al.'s July 26, 2009, NATURE GEOSCIENCE: Geophysical Laboratory, Carnegie Institution, report.
I'll let the authors let the air out their theory, in their own words:
' the tell-tale chemical signatures began to fade after a few days.'
' The synthesis and stability.... over the full range of conditions within the Earth's mantle now need to be explored... the extent to which this 'reduced' carbon survives migration into the crust needs to be established.'
'These and related questions demonstrate the need for a new experimental and theoretical program to study the fate of carbon in the deep Earth.'
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Petroleum geologists will tell you that over 99% of hydrocarbons are organic in origin.
They survive in the crust for tens of millions of years. Not a 'few days.'
'Oil' does NOT originate in Earth's mantle.
And there's a reason why the call it 'fossil-fuel.'