Re:Norway Is Walking Away from Billions of Barrels of Oil
by beat on Monday April 08, 2019 @11:52AM
(#19606322)
Eh. If it takes two barrels of oil to extract one barrel of oil, where do you get the energy for extraction? Then you're using solar/wind/nuclear to pump oil. At some point, it's cheaper to just synthesize.
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Re:Norway Is Walking Away from Billions of Barrels of Oil
by dredmorbius on Monday April 08, 2019 @02:42PM
(#19607905)
Aircraft and shipping require hydrocarbon-level fuel energy densities by mass and/or volume. There are no, or exceedingly few, substitutes.
Petroleum consumption will, can, and has proceeded well beyond EROEI 1:1 parity within such uses -- see Germany's WW2 Fischer-Tropsch process.
The correct measure here is total economic return.
Fuel synthesis is negative EROEI.
Re:Norway Is Walking Away from Billions of Barrels of Oil
by i_am_proteus on Monday April 08, 2019 @11:57AM
(#19606374)
Maybe. Cf. every mineral that's mined. Energy expended to extract a resource.
Re:Norway Is Walking Away from Billions of Barrels of Oil
by beat on Monday April 08, 2019 @02:50PM
(#19607982)
Not the same. You don't use up the iron you mine in the mining process. That's what EROEI < 1 is, unless you get the energy input from some other source.
And since anything that's in petroleum can be synthesized from simple molecules like water and CO2, given enough energy...