I recall reading that one problem is that even if OPEC drives up the price of oil above the cost of oil shale, that wouldn't make oil shale economically viable as long as OPEC retains the ability to reduce prices.
Suppose, for example, that for one billion dollars a company could gain the ability to produce an unlimited quantity of oil for $40/barrel. It's been a long time since OPEC has sold oil that cheap, but if someone started selling oil for $40/barrel, OPEC would probably respond by selling its oil for $39/barrel. Almost everyone in the U.S. would be better off as a result of OPEC's being forced to cut its prices, except for the company that spent $1B which it may never recover.
Pure fantasy. You might as well talk about cars that run on pixie dust.
OPEC is not capable of produce even half the world's demand for oil.