Hi desumaiden,
The world oil supply/production by 2027 will only be 1/2 of the world oil demand.
That's not what the graph says. The graph says that the gap will be made up by "unidentified projects". Maybe the EIA is being too optimistic and there won't actually be enough unidentified projects to provide all that oil. However, oil supply won't be 1/2 demand unless no new oilfields whatsoever are developed in all that time, which is implausible.
there will be a collapse of industrialized civilization as a result
No there will not be a collapse of civilization as a result!! The economy sacrifices the LEAST important things FIRST.
Even if your interpretation of that graph were correct, the result would not be a collapse of civilization. The result would be big increase in the price of oil, a severe curtailment of discretionary travel, and a shift to alternatives and electrified transportation like battery-electric cars.
Desumaiden, I'm definitely not meaning to be overly assertive here. However I cannot stress enough that this energy collapse stuff is a fringe crackpot theory, that it's ignored by all relevant experts, and that it has a long history of drastically failed predictions which means there's something seriously wrong with it. Civilization is NOT collapsing for these reasons. Don't spend your whole life preparing for something (and worrying about something) which isn't happening. If you want to stockpile a few years' worth of canned foods and water, then go for it. There are other possible disasters, like worldwide crop failure. However, after you've stockpiled your canned food then leave it at that and get on with your life.
Of course, you can do whatever you want. At this point I think you're committed to these things. However I thought I'd make one final try.
Best wishes,
-Tom S