Canada has given oil sands a dirty reputation, but a breakthrough, commercially viable technology has caught the eye of a former Exxon Mobil president who is putting it to use to clean up Utah’s billions of barrels of oil sands. Imagine extracting high-quality oil out of the estimated 32 billion barrels buried in Utah’s oil sands, without creating the toxic wastelands that have resulted from oil sands projects in Western Canada. And imagine doing it at a cost that can still turn a profit in today’s oil price slump. That would be highly enticing to some of the large operators...