From your reference:
This means any attempt to replace conventional oil with oil shale will actually make our situation worse as the project will consume more energy than it will produce, regardless of how high the price goes.
As Nash pointed out cost of production for Alberta "tar sand" oil is about $13 a barrel, with a barrel worth ~$65.
For the F-T process, coal to syn oil, the breakeven is $35 a barrel.
It would appear that it does not consume more energy than it produces from these two cases.
In the case of Shell's "in situ" project,
should yield 3.5 units of energy for every 1 unit used in production
So someone is wrong. Can't have it both ways.