The production of oil from Western Canada is expanding to the point that existing pipeline capacity is overwhelmed. Canadian pipeline company Enbridge aims to get its Northern Gateway project built for exports from Canada's west coast. TransCanada, meanwhile, anticipates crude oil deliveries will expand from Canada to southern U.S. refineries by way of the Keystone XL pipeline. Expanding oil production from North America, however, may be too much for pipelines to handle and suppliers will need to look to more-expensive rail to get their oil to markets.
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