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CO₂Flooding--How it works

Water Alternating Gas (WAG) method effectively produces oil with less use of CO₂.

(after Bell et al., 1995)

General Performance Characteristics

• Recovery Efficiency: 10-15% OOIP
• CO₂ Oil Production: 20-30% of Primary + Secondary
• Maximum EOR Recovery Rate: Present Rate + 10% of Water Injection Rate
• ~5 Mcf/bbl Oil

(after Bradley, 1998)

Kansas Geological Survey
Updated May 1999
Technical comments or questions to Alan P. Byrnes, Kansas Geological Survey
Web comments to webadmin@kgs.ku.edu
URL=http://www.kgs.ku.edu/CO2/evaluation/slide04.html