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CO2-enhanced oil recovery


Technology Description

CO2 injections can occur during tertiary production at oil fields to enhance oil recovery. Called CO2-EOR, this technique was pioneered in the United States. Following CO2-EOR operations, the majority of injected CO2 may remain permanently trapped in the reservoir where it was injected. However, conventional CO2-EOR operations require additional activities to confirm that injected CO2 remains stored underground. The IEA calls this CO2-EOR+,

Relevance for Net Zero

Out of all CO2 utilisation pathways, CO2-EOR uses the highest volume of captured CO2 per year. It has been a historical driver for CCUS deployment due to the revenue stream it generates.

Key Countries

Brazil, Canada, China, the United Arab Emirates, United States

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