CBC.ca | Don't weep for the "downstream" part of the oil business, it's booming CBC.ca It also includes oil drillers, bitumen miners and the smaller companies that support them with engineers, trucks, heavy equipment for making roads and berms, drilling mud, well testing, storage tanks and pumps. The upstream sector is huge and fragmented. Canada's Largest Refinery Shifts from Bakken Shale Oil to Brent Crudes |