cokers

For some time now, a handful of refineries in southeastern Louisiana, Mississippi, and Alabama have been able to receive steeply discounted, heavy sour crude from Western Canada by rail or barge — or, in rare cases, by pipeline from Cushing to Nederland, TX, to the St. James, LA, hub. Starting in a few months, though, this same crude also will be able to flow by pipe directly from Patoka, IL, to St. James on the soon-to-be-reversed Capline pipeline. Initially, the southbound volumes on Capline will be modest, but over time they could increase to several hundred thousand barrels a day. Will those barrels be loaded onto supertankers and shipped overseas, or will they be headed for refineries in Louisiana and its eastern neighbors? In today’s blog, we try to answer those questions.

Since last winter, the price gap between light crude oil and heavy crude — otherwise known as the light-heavy differential — has narrowed considerably. In February, the price difference between Louisiana Light Sweet crude (LLS) and heavy Maya crude on the Gulf Coast was almost $10/bbl, providing an advantage to refiners who have invested in cokers and other equipment that allows them to run a heavier crude slate. But since June Maya has on average sold for only about $5/bbl less than LLS. Today we examine the shrinking price gap between light and heavy crude and its effect on coking and cracking margins.