was initiated to investigate the technical Greenhouse gas sequestration and economic feasibility of CO2 stor- age in a partially depleted oil reservoir (Government of Canada, 2000). The IEA in abandoned oil reservoirs: Weyburn project is exploiting EnCana Corporation’s $1.5 billion, 30-year com- The International Energy Agency mercial CO2 enhanced oil recovery operation, which is designed to recover an incremental 130 million barrels of oil Weyburn pilot project from the Weyburn field through the in- jection of gaseous CO2 under pressure. D.J. White, Geological Survey of Canada, 615 Booth Street, Ottawa, Ontario K1A 0E9, Specifically, the IEA Weyburn Project Canada,
[email protected] aims to comprehensively monitor and verify the progress of the CO flood G. Burrowes, EnCana Corporation, 421 7th Avenue SW, P.O. Box 2850, 2 and establish the likelihood of safely Calgary, Alberta T2P 2S5, Canada storing the CO2 in the reservoir for the T. Davis, Colorado School of Mines, Golden, Colorado 80401-1887, USA long term. Toward this end, a multidis- Z. Hajnal, Department of Geological Sciences, University of Saskatchewan, ciplinary, integrated program has been Saskatoon, Saskatchewan S7N 0W0, Canada formulated to address critical issues cen- tral to safe and cost-effective, long-term K. Hirsche, Hampson-Russell Software, 715 5th Avenue SW, Calgary, storage of CO . In this article, we focus Alberta T2P 2X6, Canada 2 on the regional geoscience framework I. Hutcheon, Department of Geology and Geophysics, University of Calgary, and the monitoring and verification Calgary, Alberta, T2N 1N4, Canada components of the project. E. Majer, 90-MS1116, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA GEOLOGICAL SETTING AND HISTORY OF THE WEYBURN FIELD B.