Just a few months ago Canadian heavy crude oil producers were sending their product to storage amid a painfully deep price discount to West Texas Intermediate that ate into their margins. Chinese refiners took advantage of the cheap Canadian crude and stocked up as well while it was cheap. Now, some are worrying about a shortage of heavy crude that would interfere with the operations of Gulf Coast refineries that process more than 50 percent of the world’s heavy crude oil. Bloomberg reports some heavy crude grades such as Heavy Louisiana…
