Keystone XL Pipeline Debate: Canadian Oil Sands Crude Produces Greater Emissions Than Conventional Oils, DOE Study Finds

by Maria Gallucci (International Businesss Times) ... A new study funded by the U.S. Department of Energy found crude extracted from Canada’s oil sands region leads to greenhouse gas emissions that are 20 percent higher on average than emissions from conventionally produced U.S. crude.

President Barack Obama, who has the final say on the pipeline’s approval, has said he won’t green-light the project if it significantly exacerbates global warming pollution. Critics have dubbed the Keystone XL a carbon bomb because Canadian oil sands crude requires extensive amounts of energy to extract, process and refine compared with other types of crude.

“All crudes are not created equally,” Hao Cai, the study’s lead researcher at the DOE’s Argonne National Laboratory, told the Wall Street Journal.

Researchers looked at 27 oil sands projects in Canada’s Alberta province from 2008, calculating the total “well-to-wheel” emissions from oil field extraction, processing, refining, transport and final consumption. The peer-reviewed study was conducted jointly by the Argonne lab, Stanford University and the Institute of Transportation Studies at the University of California, Davis.

The team found that gasoline and diesel derived from Canadian oil sands crude emits 18 percent to 21 percent more greenhouse gas emissions than the same products made from conventional U.S. crude. Unlike other oil, this Canadian crude must be mined or melted out of the ground. The tarlike substance must then be processed before it’s suitable for refining, another energy-intensive stage.

“You realize very quickly that there’s a lot of differences that … are all hidden under one term called oil,” Deborah Gordon, who directs the Carnegie Endowment's Energy and Climate Program, said in a March interview. “I don’t think that’s going to be adequate for investors in the 21st century, or for governments permitting projects, or for the environmental community.” READ MORE and MORE (Newsweek) and MORE (Wall Street Journal) and MORE (Calgary Herald) Abstract (Environmental Science and Technology)