A Chinese government anticorruption investigation that already has swept aside dozens of officials is now stretching into Canada. A shake-up has hit state-run China National Petroleum Corp.’s Canadian operations and a billion-dollar oil-sands project is now in limbo. The head of a key China National Petroleum subsidiary was recalled to Beijing last month and has since fallen from public view, according to people familiar with the matter. Also in recent weeks, an email announced the replacement of China National Petroleum’s top representative in Canada. The two are being succeeded by a single executive dispatched from Beijing who will play senior roles at both units, according to emails reviewed by The Wall Street Journal. Canadian authorities are aware of “these investigations being conducted by Chinese authorities into Chinese officials,” a government official familiar with the matter said. “At this point there is no reason to believe that any Canadians are […]