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Enhanced oil recovery (EOR), sometimes called tertiary recovery, is the process of injecting heat, chemicals, or gases into oil fields to stimulate additional oil production. Most EOR uses high-pressure carbon dioxide from natural or anthropogenic sources, and is sometimes referred to as CO2-EOR. The process does not store all injected carbon dioxide — some carbon dioxide remains in the oil reservoir while some returns to the surface with the oil.

Critically, the emissions released from the burning of oil produced with CO2-EOR are significantly greater than the carbon dioxide stored in the process, undermining any purported climate benefit from the carbon dioxide storage. Most existing CCS projects in the world are EOR projects. 

●  Advanced and mature technology with a simple process flow.

●  High adsorption capacity and CO2/hydrocarbon separation coefficient of CO2-specific adsorbents.

●  Fully adaptable to significant fluctuations in CO2 concentration in the feed gas (5~90%).

●  High purity and yield of CO2 product gas, with high hydrocarbon yield as well.

●  High integration and automation level of the equipment.

●  Low separation and recovery costs for CO2 and hydrocarbons, resulting in high economic and ecological benefits.

●  The entire separation process is free of secondary pollution, promoting environmental sustainability.

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