Bloomberg looks at support within the oil industry for a carbon tax.

The contradiction of an industry seeking a new tax on itself has emerged in energy-rich Canada because producers are concerned the crude they process from tar-like sands will be barred from foreign markets for releasing more carbon in its production than competing fossil fuels.

Oil companies operating in Canada such as Exxon Mobil Corp. (XOM), Total SA (FP) of France and Canada’s Cenovus Energy Inc. (CVE) plan to convert billions of barrels of the sticky bitumen into diesel and gasoline. Under foreign and domestic pressure, they now see a greenhouse-gas levy helping to provide access to markets and more predictable costs for Canada’s biggest export industry, which shipped C$68 billion ($68 billion) of oil in 2011.