Canadian crude prices are plunging once again as repairs were completed on Alberta’s second-biggest oil sands upgrader and production surged from a new mine. (Bloomberg) — Canadian crude prices are plunging once again as repairs were completed on Alberta’s second-biggest oil sands upgrader and production surged from a new mine. Synthetic crude, a light grade produced in upgraders, fell Thursday to the biggest discount to West Texas Intermediate futures since December 2013, data compiled by Bloomberg show. Prices dropped a day after Suncor Energy Inc.’s Chief Executive Officer Steve Williams said at a conference Wednesday that repairs on the Syncrude Canada Ltd. upgrader, which shut after a power disruption in June, were complete and the last of three sections of the plant was ready to start operation. He also said that Suncor’s new Fort Hills oil sands mine was ramping up faster than planned after oil production started earlier […]