ConocoPhillips (COP) and Royal Dutch Shell Plc (RDSA) are among global oil companies needing crude prices as high as $150 a barrel to turn a profit from Canada’s oil sands, the costliest petroleum projects in the world, according to a study. The next most-expensive crude projects are in the deep waters off the coasts of Africa and Brazil, with each venture needing prices between $115 and $127 a barrel, said Carbon Tracker Initiative, a London-based think tank and environmental advocacy group, in a report today. As the U.S. shale drilling boom floods the world’s biggest crude market with supply, explorers are at greater risk of a price collapse that would turn some investments into money losers. “In order to sustain shareholder returns, companies should focus on low-cost projects, deferring or cancelling projects with high breakeven costs,” the report’s authors wrote. “Capital should be redeployed to share buybacks or increased […]