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So would it be correct to state that refining heavy crude is more energy intensive, and has a lower ERoEI? Would more of the gas produced end up not sold but fueling the processing of the later products?
So would it be correct to state that refining heavy crude is more energy intensive, and has a lower ERoEI?
Yes, I have calculated this before. For just the refining step - and counting all energy inputs, even those generated within the process and used to drive it - the EROEI is about 12/1 for light crude and 10/1 for heavy, sour crude. That is just the refining step. Numbers I have heard for the crude production step are in the range of a global average of 17/1, which puts your total EROEI in the 6/1 range.