Plains CO2 Reduction (PCOR) Partnership

Weyburn–Midale CO2 Project

Assessing CO2 behavior in an ongoing commercial CO2 EOR project

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Photo of researchers touring a CO2 compression unit for the Weyburn–Midale CO2 Project.

Photo of CO2 capture at Dakota Gasification Company’s Great Plains Synfuels Plant.
The Weyburn and Midale oil fields in the southern portion of the Canadian province of Saskatchewan are the sites of major commercial enhanced oil recovery (EOR) operations using CO2. The industrial CO2 used for the oilfield operations travels 205 miles (330 km) by pipeline from the Great Plains Synfuels Plant in Beulah, North Dakota, to the Weyburn and Midale oil fields. The EOR operations will eventually produce an additional 122 million barrels of oil and permanently store 44 million tons of CO2 deep underground in the oil-producing rocks.

The behavior of the CO2 accumulating in the underground oil-producing zones during the commercial EOR operation has been the focus of the IEA Greenhouse Gas R&D Programme (IEAGHG) Weyburn–Midale CO2 Monitoring and Storage Project, an 11-year, $85 million scientific assessment completed in 2011. The assessment program was managed by the Petroleum Technology Research Centre in Regina, Saskatchewan, and was funded by numerous government and industry sources, including the IEAGHG, Natural Resources Canada, and the U.S. Department of Energy. A final report on the project, Best Practices for Validating CO2 Geological Storage: Observations and Guidance from the IEAGHG Weyburn–Midale CO2 Monitoring and Storage Project, was released in 2012.